WO2017043257A1 - Terminal device, base station device, communication method, and integrated circuit - Google Patents

Abstract

The purpose of the invention is to let a terminal device and a base station device communicate with each other efficiently using an UpPTS or an SRS. Disclosed is a terminal device that communicates with a base station device in a plurality of serving cells to be aggregated, wherein: the terminal device receives a parameter indicating a special subframe setting for each of the plurality of serving cells to be aggregated; and, in cases where different serving cells that belong to different bands are to be aggregated, the terminal device transmits capability information indicating whether the terminal device assumes that there is overlap for at least a predetermined number of seconds between respective guard periods of the special subframes in the different serving cells that belong to the different bands.

Description

Terminal device, base station device, communication method, and integrated circuit

The present invention relates to a terminal device, a base station device, a communication method, and an integrated circuit.
This application claims priority based on Japanese Patent Application No. 2015-179153 filed in Japan on September 11, 2015, the contents of which are incorporated herein by reference.

The wireless access method and wireless network for cellular mobile communications (hereinafter referred to as “Long Term Evolution (LTE)” or “Evolved Universal Terrestrial Radio Access: EUTRA”) is the third generation partnership project (3rd Generation Partnership Project: 3GPP). In LTE, a base station apparatus is also called eNodeB (evolvedvolveNodeB), and a terminal device is also called UE (UserＵＥEquipment). LTE is a cellular communication system in which a plurality of areas covered by a base station apparatus are arranged in a cell shape. A single base station apparatus may manage a plurality of cells.

3GPP specifies carrier aggregation that allows a terminal device to simultaneously transmit and / or receive in up to five serving cells (component carriers).

LTE supports Time Division Duplex (TDD). LTE employing the TDD scheme is also referred to as TD-LTE or LTE TDD. In TDD, uplink signals and downlink signals are time division multiplexed. Further, LTE corresponds to Frequency Division Duplex (FDD).

In 3GPP, in order to enhance the capacity of SRS, it has been studied to increase the number of SC-FDMA (Single-Carrier-Frequency-Division-Multiple Access) symbols in UpPTS for SRS transmission (Non-patent Document 1).

The present invention has been made in view of the above points, and the object thereof is a terminal device that can efficiently communicate with a base station device using UpPTS or SRS, a base station device that communicates with the terminal device, A communication method used for the terminal device, a communication method used for the base station device, an integrated circuit mounted on the terminal device, and an integrated circuit mounted on the base station device.

(1) In the aspect of the present invention, the following measures were taken. That is, the first aspect of the present invention is a terminal device that communicates with a base station apparatus in a plurality of aggregated serving cells, and receives a parameter indicating a special subframe setting for each of the aggregated serving cells. And the terminal device assumes that the guard periods of the special subframes in the different serving cells belonging to the different bands have at least a predetermined number of seconds when the serving cell and the different serving cells belonging to different bands are aggregated A transmission unit that transmits capability information indicating whether or not.

(2) A second aspect of the present invention is a base station apparatus that communicates with a terminal apparatus in a plurality of aggregated serving cells, and is a parameter for each of the aggregated serving cells, and is configured for a special subframe When different serving cells belonging to different bands are aggregated with a transmission unit that transmits the parameters indicating the guard period of the special subframe in the different serving cells belonging to the different bands has an overlap of at least a predetermined number of seconds A receiving unit that receives capability information indicating whether or not the terminal device assumes this.

(3) A third aspect of the present invention is a communication method used for a terminal apparatus that communicates with a base station apparatus in a plurality of aggregated serving cells, and sets a special subframe for each of the aggregated serving cells. The terminal device indicates that the guard periods of the special subframes in the different serving cells belonging to the different bands have at least a predetermined number of seconds when the parameters are received and different serving cells belonging to the different bands are aggregated. Capability information indicating whether to assume or not is transmitted.

(4) A fourth aspect of the present invention is a communication method used for a base station apparatus that communicates with a terminal apparatus in a plurality of aggregated serving cells, and is a parameter for each of a plurality of aggregated serving cells, When the parameter indicating the setting of the special subframe is transmitted and different serving cells belonging to different bands are aggregated, the guard period of the special subframe in the different serving cells belonging to the different bands overlaps at least a predetermined number of seconds. Capability information indicating whether the terminal device assumes that

(5) A fifth aspect of the present invention is an integrated circuit mounted on a terminal apparatus that communicates with a base station apparatus in a plurality of aggregated serving cells, and special subframe settings for each of the aggregated serving cells When a receiving circuit that receives a parameter indicating a different serving cell belonging to a different band is aggregated, a guard period of a special subframe in the different serving cell belonging to the different band has at least a predetermined number of seconds of overlap. A transmission circuit that transmits capability information indicating whether or not the terminal device assumes.

(6) A sixth aspect of the present invention is an integrated circuit implemented in a base station apparatus that communicates with a terminal device in a plurality of aggregated serving cells, and is a parameter for each of a plurality of aggregated serving cells. When the transmission circuit for transmitting the parameter indicating the setting of the special subframe and the different serving cells belonging to different bands are aggregated, the guard period of the special subframe in the different serving cells belonging to the different bands is at least a predetermined value. A receiving circuit that receives capability information indicating whether or not the terminal device assumes that the number of seconds overlaps.

According to the present invention, the terminal device and the base station device can efficiently communicate with each other using UpPTS or SRS.

It is a figure which shows description of the symbol used in this embodiment. It is a figure which shows description of the symbol used in this embodiment. It is a conceptual diagram of the radio | wireless communications system of this embodiment. It is a figure which shows schematic structure of the radio frame of the frame structure type 2 of this embodiment. It is a figure which shows schematic structure of the uplink slot of this embodiment. It is a figure which shows an example of the uplink cyclic prefix setting of this embodiment. It is a figure which shows UL-DL setting of this embodiment. It is a figure which shows an example of the downlink sub-frame in this embodiment. It is a figure which shows an example of the uplink sub-frame in this embodiment. It is a figure which shows an example of the special sub-frame in this embodiment. It is a figure which shows the special sub-frame setting with respect to the extended CP in the downlink in this embodiment. It is a figure which shows the special sub-frame setting with respect to normal CP in the downlink in this embodiment. It is a figure which shows an example of the acquisition method of the special sub-frame setting in this embodiment. It is a figure which shows the relationship of three parameters which show the special sub-frame setting in this embodiment. It is a figure which shows an example of the special sub-frame setting with respect to the several TDD serving cell aggregated in this embodiment. It is a figure which shows an example of the special sub-frame setting with respect to the several TDD serving cell aggregated in this embodiment. It is a figure which shows an example of the value of parameter m _{SRS, b (b = 0)} in this embodiment. It is a figure which shows an example of SRS transmitted in the uplink sub-frame in this embodiment. It is a figure which shows an example of SRS transmitted in UpPTS in case resetting of m _{SRS, 0} in this embodiment is enabled (enabled). It is a figure which shows the uplink transmission timing in this embodiment. It is a figure which shows the relationship between uplink CP and Y in this embodiment. It is a figure which shows an example of SRS transmitted in UpPTS in case resetting of m _{SRS, 0} in this embodiment is disabled (disabled). It is a schematic block diagram which shows the structure of the terminal device 1 of this embodiment. It is a schematic block diagram which shows the structure of the base station apparatus 3 of this embodiment.

Hereinafter, embodiments of the present invention will be described.

FIG. 1 and FIG. 2 are diagrams showing an explanation of symbols used in the present embodiment.

FIG. 3 is a conceptual diagram of the wireless communication system of the present embodiment. In FIG. 3, the radio communication system includes terminal apparatuses 1 A to 1 C and a base station apparatus 3. Hereinafter, the terminal devices 1A to 1C are referred to as the terminal device 1.

Hereafter, carrier aggregation will be described.

In the present embodiment, the terminal device 1 is set with a plurality of serving cells. A technique in which the terminal device 1 communicates via a plurality of serving cells is referred to as cell aggregation or carrier aggregation. The present invention may be applied to each of a plurality of serving cells set for the terminal device 1. In addition, the present invention may be applied to some of the set serving cells. In addition, the present invention may be applied to each of a plurality of set serving cell groups. Further, the present invention may be applied to a part of the set groups of a plurality of serving cells. In carrier aggregation, a plurality of set serving cells are also referred to as aggregated serving cells.

In the wireless communication system of the present embodiment, TDD (Time Division Duplex) and / or FDD (Frequency Division Duplex) are applied. In the case of cell aggregation, TDD may be applied to all of a plurality of serving cells. In the case of cell aggregation, a serving cell to which TDD is applied and a serving cell to which FDD is applied may be aggregated. In the present embodiment, a serving cell to which TDD is applied is also referred to as a TDD serving cell or a serving cell using frame structure type 2.

The set plurality of 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 (Radio Resource Control) connection is established or later.

In the downlink, a carrier corresponding to a serving cell is referred to as a downlink component carrier. In the uplink, a carrier corresponding to a serving cell is referred to as an uplink component carrier. The downlink component carrier and the uplink component carrier are collectively referred to as a component carrier. In TDD, the carrier corresponding to the serving cell in the uplink and the carrier corresponding to the serving cell in the downlink are the same.

The terminal device 1 can simultaneously transmit a plurality of physical channels / a plurality of physical signals in a plurality of TDD serving cells (component carriers) aggregated in the same band. The terminal device 1 can simultaneously receive a plurality of physical channels / a plurality of physical signals in a plurality of TDD serving cells (component carriers) aggregated in the same band.

The terminal device 1 does not support simultaneous transmission of physical channels / multiple physical signals and transmission of physical channels / multiple physical signals in a plurality of TDD serving cells (component carriers) aggregated in the same band.

The terminal apparatus 1 also supports simultaneous transmission of physical channels / multiple physical signals and transmission of physical channels / multiple physical signals in different TDD serving cells (component carriers) aggregated in different bands. Good or not.

The terminal device 1 simultaneously transmits a physical channel / a plurality of physical signals and a physical channel / a plurality of physical signals in different TDD serving cells (component carriers) aggregated in different bands. Capability information (UE capability information) indicating whether or not it is supported may be transmitted to the base station apparatus 3.

The physical channel and physical signal of this embodiment will be described.

In FIG. 3, the following uplink physical channels are used in uplink wireless communication from the terminal apparatus 1 to the base station apparatus 3. The uplink physical channel is used for transmitting information output from an upper layer.
-PUCCH (Physical Uplink Control Channel)
・ PUSCH (Physical Uplink Shared Channel)
・ PRACH (Physical Random Access Channel)

The PUCCH is used for transmitting uplink control information (Uplink Control Information: UCI). Uplink control information includes downlink channel state information (Channel State Information: CSI) and a scheduling request (Scheduling Request: used to request PUSCH (Uplink-Shared Channel: UL-SCH) resources for initial transmission. SR), HARQ-ACK (Hybrid, Automatic, Repeat, Request, ACKnowledgement) for downlink data (Transport, Block, Medium, Access, Control, Protocol, Data, Unit: MAC, PDU, Downlink-Shared, Channel: DL, SCH, Physical, Downlink, Shared Channel: PDSCH). HARQ-ACK indicates ACK (acknowledgement) or NACK (negative-acknowledgement). HARQ-ACK is also referred to as ACK / NACK, HARQ feedback, HARQ response, HARQ information, or HARQ control information.

The scheduling request includes a positive scheduling request (positive scheduling request) or a negative scheduling request (negative scheduling request). A positive scheduling request indicates requesting UL-SCH resources for initial transmission. A negative scheduling request indicates that no UL-SCH resource is required for initial transmission.

The PUSCH is used to transmit uplink data (Uplink-Shared Channel: UL-SCH). The PUSCH may also be used to transmit HARQ-ACK and / or channel state information along with uplink data. Also, the PUSCH may be used to transmit only channel state information or only HARQ-ACK and channel state information.

PRACH is used to transmit a random access preamble. PRACH indicates the initial connection establishment (initial connection establishment) procedure, handover procedure, connection re-establishment (connection re-establishment) procedure, synchronization (timing adjustment) for uplink transmission, and PUSCH (UL-SCH) resource requirements. Used for. Format 1 to format 4 are defined for PRACH.

In FIG. 3, the following uplink physical signals are used in uplink wireless communication. Uplink physical signals are not used to transmit information output from higher layers, but are used by the physical layer.
・ Uplink Reference Signal (UL RS)

In this embodiment, the following two types of uplink reference signals are used.
DMRS (Demodulation Reference Signal)
・ SRS (Sounding Reference Signal)

DMRS is related to transmission of PUSCH or PUCCH. DMRS is time-multiplexed with PUSCH or PUCCH. The base station apparatus 3 uses DMRS to perform propagation channel correction for PUSCH or PUCCH. Hereinafter, transmitting both PUSCH and DMRS is simply referred to as transmitting PUSCH. Hereinafter, transmitting both PUCCH and DMRS is simply referred to as transmitting PUCCH.

SRS is not related to PUSCH or PUCCH transmission. The base station apparatus 3 may use SRS for measuring the channel state. The SRS is transmitted in the last SC-FDMA (Single Carrier-Frequency Division Multiple Access) symbol in the uplink subframe or the SC-FDMA symbol in UpPTS.

SRS transmission is triggered by higher layer signal and / or DCI format. The trigger by the upper layer signal is also referred to as trigger type 0. The trigger based on the DCI format is also referred to as trigger type 1.

The SRS corresponding to the trigger type 0 is transmitted in the first resource (subframe and SC-FDMA symbol) indicated by the higher layer signal. The SRS corresponding to trigger type 1 is transmitted in the second resource (subframe and SC-FDMA symbol) indicated by the higher layer signal. In response to a trigger based on one DCI format, the SRS corresponding to trigger type 1 is transmitted only once.

One terminal apparatus 1 may transmit SRS in each of a plurality of SC-FDMA symbols in one UpPTS. One terminal apparatus 1 may transmit an SRS corresponding to the trigger type 0 in each of a plurality of SC-FDMA symbols in one UpPTS. Here, it is preferable that the plurality of SC-FDMA symbols in the one UpPTS are continuous in the time domain. The base station apparatus 3 may transmit information indicating a plurality of consecutive SC-FDMA symbols in UpPTS to the terminal apparatus 1 as the first resource.

In FIG. 3, the following downlink physical channels are used in downlink wireless communication from the base station apparatus 3 to the terminal apparatus 1. The downlink physical channel is used for transmitting information output from an upper layer.
・ PBCH (Physical Broadcast Channel)
・ PCFICH (Physical Control Format Indicator Channel)
・ PHICH (Physical Hybrid automatic repeat request Indicator Channel)
・ PDCCH (Physical Downlink Control Channel)
・ EPDCCH (Enhanced Physical Downlink Control Channel)
・ PDSCH (Physical Downlink Shared Channel)
・ PMCH (Physical Multicast Channel)

The PBCH is used to broadcast a master information block (Master Information Block: MIB, Broadcast Channel: BCH) commonly used in the terminal device 1.

PCFICH is used for transmitting information indicating a region (OFDM symbol) used for transmission of PDCCH.

The PHICH is used to transmit an HARQ indicator (HARQ feedback, response information) indicating ACK (ACKnowledgement) or NACK (Negative ACKnowledgement) for uplink data (Uplink Shared Channel: UL-SCH) received by the base station apparatus 3. It is done.

PDCCH and EPDCCH are used to transmit downlink control information (Downlink Control Information: DCI). The downlink control information is also referred to as a DCI format. The downlink control information includes a downlink grant (downlink grant) and an uplink grant (uplink grant). The downlink grant is also referred to as downlink assignment (downlink allocation) or downlink assignment (downlink allocation).

The downlink grant is used for scheduling a single PDSCH within a single cell. The downlink grant is used for scheduling the PDSCH in the same subframe as the subframe in which the downlink grant is transmitted.

The uplink grant is used for scheduling a single PUSCH within a single cell. The uplink grant is used for scheduling a single PUSCH in a subframe that is four or more after the subframe in which the uplink grant is transmitted.

The CRC parity bits added to the downlink grant or uplink grant are scrambled by C-RNTI (Cell-Radio Network Temporary Identifier) or SPS C-RNTI (Semi Persistent Scheduling Cell-Radio Network Temporary Identifier). The C-RNTI and SPS C-RNTI are identifiers for identifying a terminal device in a cell.

C-RNTI is used to control PDSCH or PUSCH in a single subframe. The SPS C-RNTI is used to periodically allocate PDSCH or PUSCH resources.

PDSCH is used to transmit downlink data (Downlink Shared Channel: DL-SCH).

PMCH is used to transmit multicast data (Multicast Channel: MCH).

In FIG. 3, the following downlink physical signals are used in downlink wireless communication. The downlink physical signal is not used to transmit information output from the upper layer, but is used by the physical layer.
・ Synchronization signal (SS)
・ Downlink Reference Signal (DL RS)

The synchronization signal is used for the terminal device 1 to synchronize the downlink frequency domain and time domain. In the TDD scheme, the synchronization signal is arranged in subframes 0, 1, 5, and 6 in the radio frame. In the FDD scheme, the synchronization signal is arranged in subframes 0 and 5 in the radio frame.

The downlink reference signal is used for the terminal device 1 to correct the propagation path of the downlink physical channel. The downlink reference signal is used for the terminal device 1 to calculate downlink channel state information.

In this embodiment, the following five types of downlink reference signals are used.
-CRS (Cell-specific Reference Signal)
-URS (UE-specific Reference Signal) related to PDSCH
DMRS (Demodulation Reference Signal) related to EPDCCH
NZP CSI-RS (Non-Zero Power Chanel State Information-Reference Signal)
・ ZP CSI-RS (Zero Power Chanel State Information-Reference Signal)
MBSFN RS (Multimedia Broadcast and Multicast Service over Single Frequency Network Reference signal)
・ PRS (Positioning Reference Signal)

The downlink physical channel and the downlink physical signal are collectively referred to as a downlink signal. The uplink physical channel and the uplink physical signal are collectively referred to as an uplink signal. The downlink physical channel and the uplink physical channel are collectively referred to as a physical channel. The downlink physical signal and the uplink physical signal are collectively referred to as a physical signal.

BCH, MCH, UL-SCH and DL-SCH are transport channels. A channel used in a medium access control (Medium Access Control: MAC) layer is referred to as a transport channel. A transport channel unit used in the MAC layer is also referred to as a transport block (transport block: TB) or a MAC PDU (Protocol Data Unit). In the MAC layer, HARQ (HybridbrAutomatic Repeat reQuest) is controlled for each transport block. The transport block is a unit of data that the MAC layer delivers to the physical layer. In the physical layer, the transport block is mapped to a code word, and an encoding process is performed for each code word.

The base station device 3 and the terminal device 1 exchange (transmit / receive) signals in a higher layer. For example, the base station device 3 and the terminal device 1 transmit and receive RRC signaling (RRC message: Radio Resource Control message, RRC information: also called Radio Resource Control information) in a radio resource control (RRC: Radio Resource Control) layer. May be. The base station device 3 and the terminal device 1 may transmit and receive MAC CE (Control Element) in a medium access control (MAC: Medium Access Control) layer. Here, RRC signaling and / or MAC CE is also referred to as higher layer signaling.

PUSCH and PDSCH are used to transmit RRC signaling and MAC CE. Here, the RRC signaling transmitted by the PDSCH from the base station apparatus 3 may be common signaling for a plurality of terminal apparatuses 1 in the cell. The RRC signaling transmitted from the base station device 3 on the PDSCH may be dedicated signaling for a certain terminal device 1 (also referred to as dedicated signaling or UE specific signaling). The cell specific parameter may be transmitted using common signaling for a plurality of terminal devices 1 in a cell or dedicated signaling for a certain terminal device 1. The UE specific parameter may be transmitted to a certain terminal device 1 using dedicated signaling.

In this embodiment, the random access procedure may be executed in the primary cell and the secondary cell. PRACH may be transmitted in the primary cell. The terminal device 1 receives information (RRC message) related to the random access procedure in the primary cell from the base station device 3. The information regarding the random access procedure in the primary cell may include information indicating a set of PRACH resources in the primary cell and a format of the PRACH.

PRACH may be transmitted in the secondary cell. The terminal device 1 receives information (RRC message) related to the random access procedure in the secondary cell from the base station device 3. The information regarding the random access procedure in the secondary cell may include information indicating a set of PRACH resources in the secondary cell and a format of the PRACH.

One uplink subframe and one UpPTS may include one or more PRACH resources.

FIG. 4 is a diagram showing a schematic configuration of a radio frame of frame structure type 2 according to the present embodiment. Frame structure type 2 can be applied to TDD. In FIG. 4, the horizontal axis is a time axis.

The size of the various fields in the time domain is expressed by the number of time units T _s = 1 / (15000 · 2048) seconds. The length of the frame structure type 2 radio frame is T _f = 307200 · T _s = 10 ms. A frame structure type 2 radio frame includes two half frames that are continuous in the time domain. The length of each half frame is T _half-frame = 153600 · T _s = 5 ms. Each half frame includes five subframes that are continuous in the time domain. The length of each _subframe is T _subframe = 30720 · T _s = 1 ms. Each subframe i includes two consecutive slots in the time domain. Two consecutive slots in the time domain, the slot of the slot number n _s within a radio frame 2i, and the slot number n _s within a radio frame is 2i + 1 slot. The length of each slot is T _slot = 153600 · n _s = 0.5 ms. Each radio frame includes 10 subframes continuous in the time domain. Each radio frame includes 20 consecutive slots (n _s = 0, 1,..., 19) in the time domain.

Hereinafter, the configuration of the slot of this embodiment will be described. FIG. 5 is a diagram illustrating a schematic configuration of the uplink slot according to the present embodiment. FIG. 5 shows the configuration of the uplink slot in one cell. In FIG. 5, the horizontal axis is the time axis, and the vertical axis is the frequency axis. In FIG. 5, l is an SC-FDMA symbol number / index, and k is a subcarrier number / index.

A physical signal or physical channel transmitted in each slot is represented by a resource grid. In the uplink, the resource grid is defined by a plurality of subcarriers and a plurality of SC-FDMA symbols. Each element in the resource grid is referred to as a resource element. A resource element is represented by a subcarrier number / index k and an SC-FDMA symbol number / index l.

Resource grid is defined for each antenna port. In the present embodiment, description will be given for one antenna port. The present embodiment may be applied to each of a plurality of antenna ports.

The uplink slot includes a plurality of SC-FDMA symbols l (l = 0, 1,..., N ^UL _symb ) in the time domain. N ^UL _symb indicates the number of SC-FDMA symbols included in one uplink slot. N ^UL _symb is 7 for normal CP (normal cyclic prefix) in the ^uplink . N ^UL _symb is 6 for extended CP in the uplink.

The terminal device 1 receives the parameter UL-CyclicPrefixLength indicating the CP length in the uplink from the base station device 3. The base station apparatus 3 may broadcast the system information including the parameter UL-CyclicPrefixLength corresponding to the cell in the cell.

FIG. 6 is a diagram illustrating an example of uplink cyclic prefix setting according to the present embodiment. N _{CP, l} indicates the uplink CP length for the SC-FDMA symbol l in the slot. When the uplink cyclic prefix setting (UL-CyclicPrefixLength) is a normal CP, N _{CP, 0} = 160 for l = 0. The length of the SC-FDMA symbol 1 excluding the CP length is 2048 · T _s , and the length of the SC-FDMA symbol 1 including the CP length is (N _{CP, l} +2048) · T _s .

The uplink slot includes a plurality of subcarriers k (k = 0, 1,..., N ^UL _RB × N ^RB _sc ) in the frequency domain. N ^UL _RB is an uplink bandwidth setting for the serving cell, expressed as a multiple of N ^RB _sc . N ^RB _sc is a (physical) resource block size in the frequency domain expressed by the number of subcarriers. In the present embodiment, subcarrier spacing Δf is 15 kHz, N ^RB _sc is 12. That is, in the present embodiment, N ^RB _sc is 180 kHz.

A resource block is used to represent a mapping of physical channels to resource elements. As resource blocks, virtual resource blocks and physical resource blocks are defined. A physical channel is first mapped to a virtual resource block. Thereafter, the virtual resource block is mapped to the physical resource block. One physical resource block is defined by N ^UL _symb consecutive SC-FDMA symbols in the time domain and N ^RB _sc consecutive subcarriers in the frequency domain. Thus, one physical resource block is composed of resource elements of _{^{(N UL symb × N RB sc}} ). One physical resource block corresponds to one slot in the time domain. Physical resource blocks are numbered (0, 1,..., N ^UL _RB −1) in order from the lowest frequency in the frequency domain.

The downlink slot in this embodiment includes a plurality of OFDM symbols. The configuration of the downlink slot in this embodiment is basically the same except that the resource grid is defined by a plurality of subcarriers and a plurality of OFDM symbols, and thus description of the configuration of the downlink slot is omitted. To do.

In the TDD serving cell, the uplink bandwidth setting value for the TDD serving cell and the downlink bandwidth setting value for the TDD serving cell are the same.

The terminal apparatus 1 may detect whether the CP length in the downlink of the serving cell is a normal CP or an extended CP from the synchronization signal and / or PBCH in the serving cell.

The resource block is used to express mapping of a certain physical channel (such as PDSCH or PUSCH) to a resource element. As resource blocks, virtual resource blocks and physical resource blocks are defined. A physical channel is first mapped to a virtual resource block. Thereafter, the virtual resource block is mapped to the physical resource block. One physical resource block is defined by 7 consecutive OFDM symbols or SC-FDMA symbols in the time domain and 12 consecutive subcarriers in the frequency domain. Therefore, one physical resource block is composed of (7 × 12) resource elements. One physical resource block corresponds to one slot in the time domain and corresponds to 180 kHz in the frequency domain. Physical resource blocks are numbered from 0 in the frequency domain.

The time-continuous signal _sl (t) in the SC-FDMA symbol l in the uplink slot is given by equation (1). Equation (1) is applied to uplink physical signals other than uplink physical signals and PRACH.

Here, a _{k, l} is the content of the resource element (k, l). SC-FDMA symbols in slots start with l = 0 and are transmitted in ascending order of l. SC-FDMA symbol l> 0 starts at the time defined by equation (2) in the slot.

Hereinafter, UL-DL configuration (uplink-downlink configuration) of this embodiment will be described.

For frame structure type 2, the following three types of subframes are defined.
・ Downlink subframe ・ Uplink subframe ・ Special subframe

The downlink subframe is a subframe reserved for downlink transmission. The uplink subframe is a subframe reserved for uplink transmission. The special subframe is composed of three fields. The three fields are DwPTS (Downlink Pilot Time Slot), GP (Guard Period), and UpPTS (Uplink Pilot Time Slot). The total length of DwPTS, GP, and UpPTS is 1 ms. DwPTS is a field reserved for downlink transmission. UpPTS is a field reserved for uplink transmission. GP is a field in which downlink transmission and uplink transmission are not performed. Note that the special subframe may be composed of only DwPTS and GP, or may be composed of only GP and UpPTS.

The frame structure type 2 radio frame is composed of at least a downlink subframe, an uplink subframe, and a special subframe. The configuration of a frame structure type 2 radio frame is indicated by the UL-DL configuration. The terminal device 1 receives information indicating the UL-DL setting from the base station device 3. The base station apparatus 3 may broadcast system information including information indicating the UL-DL setting corresponding to the cell in the cell.

FIG. 7 is a diagram showing the UL-DL setting of the present embodiment. FIG. 7 shows UL-DL settings in one radio frame. In FIG. 7, D indicates a downlink subframe, U indicates an uplink subframe, and S indicates a special subframe. The radio frame timing and subframe timing in a plurality of aggregated serving cells are synchronized. That is, special subframes that are subframes 2 in a plurality of aggregated serving cells overlap.

All subframes in FDD are downlink subframes. In FDD, all subframes are uplink subframes.

FIG. 8 is a diagram illustrating an example of a downlink subframe in the present embodiment. FIG. 9 is a diagram illustrating an example of the uplink subframe in the present embodiment. FIG. 10 is a diagram illustrating an example of the special subframe in the present embodiment. 8, 9, and 10, the horizontal axis is a time axis, and the vertical axis is a frequency axis. In FIG. 8, FIG. 9, and FIG. 10, the downlink cyclic prefix setting and the uplink cyclic prefix setting are normal cyclic prefixes.

DwPTS includes the first symbol of the special subframe. UpPTS includes the last symbol of the special subframe. GP exists between DwPTS and UpPTS. The terminal device 1 may perform switching from downlink reception processing to uplink transmission processing during the GP. In UpPTS, SRS is transmitted. In UpPTS, PUSCH and PUCCH are not transmitted. In the special sub-frame, the transmission of PRACH is, starting from the last of the sub-frame from before 4382 · T _s. The format of PRACH transmitted in the special subframe is format 4. In the special subframe, a PRACH in a format other than format 4 is not transmitted.

FIG. 11 is a diagram illustrating a special subframe configuration (extended subframe configuration) for the extended CP in the downlink according to the present embodiment. When the special subframe setting for the extended CP in the downlink is 0, the length of DwPTS is 7680 · T _s , and DwPTS includes three OFDM symbols including the extended CP. When the special subframe setting for the extended CP in the downlink is 0 and the uplink cyclic prefix configuration is the normal CP, the length of the UpPTS is 2192 · T _s , and the UpPTS includes the normal CP Contains one SC-FDMA symbol. When the special subframe setting for the extended CP in the downlink is 0 and the uplink CP setting is the extended CP, the length of the UpPTS is 2560 · T _s and the UpPTS is one SC-FDM symbol including the normal CP. including.

FIG. 12 is a diagram illustrating a special subframe setting for the normal CP in the downlink according to the present embodiment. If special subframe configuration for normal CP in the downlink is 0, the length of DwPTS is 6592 · T _s, DwPTS contains 3 OFDM symbols including normal CP. When the special subframe setting for the normal CP in the downlink is 0 and the uplink CP setting is the normal CP, the length of the UpPTS is 2192 · T _s and the UpPTS is one SC-FDMA symbol including the normal CP. including. When the special subframe setting for the normal CP in the downlink is 0 and the uplink CP setting is the extended CP, the length of the UpPTS is 2560 · T _s and the UpPTS is one SC-FDM symbol including the normal CP. including.

The terminal device 1 may receive the parameter specialSubframePatterns (without suffix), the parameter specialSubframePatterns-v1130, and / or the parameter specialSubframePatterns-v13xx from the base station device 3. A parameter specialSubframePatterns (without suffix), a parameter specialSubframePatterns-v1130, and a parameter specialSubframePatterns-v13xx indicate special subframe settings.

FIG. 13 is a diagram illustrating an example of a method for acquiring special subframe settings in the present embodiment. The method in FIG. 13 may be applied to the primary cell.

In step S1300, the base station apparatus 3 notifies system information. The terminal device 1 receives the left system information. Here, the system information may include the parameter UL-CyclicPrefixLength indicating the CP length in the uplink, the parameter specialSubframePatterns (without suffix) indicating the special subframe setting, and / or the parameter specialSubframePatterns-v1130 indicating the special subframe setting. Good. Here, the parameter UL-CyclicPrefixLength, specialSubframePatterns (without suffix), and the parameter specialSubframePatterns-v1130 are cell specific parameters. The system information is transmitted using BCCH (Broadcast Control CHannel). BCCH is a downlink logical channel for broadcasting system control information.

In step S1302, the base station apparatus 3 transmits information UECapabilityEnquiry used to request transmission of capability information UECapabilityInformation related to the terminal apparatus 1 to the terminal apparatus 1. In step S1304, the terminal device 1 transmits capability information UECapabilityInformation related to the terminal device 1 to the base station device 3 in accordance with the information UECapabilityEnquiry.

In step S1304, the base station apparatus 3 generates information RRCConnectionReconfiguration for correcting the RRC connection according to the received capability information UECapabilityInformation, and transmits the generated information RRCConnectionReconfiguration to the terminal apparatus 1. Here, the information RRCConnectionReconfiguration may include a parameter specialSubframePatterns-v13xx indicating a special subframe setting. The base station apparatus 3 may determine whether to include the parameter specialSubframePatterns-v13xx in the information RRCConnectionReconfiguration according to the received capability information UECapabilityInformation. Here, the parameter specialSubframePatterns-v13xx may be a cell specific parameter or a UE specific parameter. The information RRCConnectionReconfiguration is transmitted using DCCH (Dedicated Control Channel). The DCCH is a point-to-point bidirectional logical channel that transmits dedicated control information between the base station apparatus 3 (network) and the terminal apparatus 1.

The information RRCConnectionReconfiguration may further include some or all of the following information / parameters.
Information indicating the secondary cell to be added,
-Parameter UL-CyclicPrefixLength for added secondary cell
・ Parameter for the added secondary cell specialSubframePatterns (without suffix)
-Parameter specialSubframePatterns-v1130 for the added secondary cell
-Parameter specialSubframePatterns-v13xx for the added secondary cell

The parameter specialSubframePatterns (without suffix) is a special subframe setting {0, 1,. . . , 8} and special subframe configuration {0, 1,. . . , 6}. The parameter specialSubframePatterns-v1130 can indicate a special subframe setting {9} for the normal CP in the downlink and a special subframe setting {7} for the extended CP in the downlink. The parameter specialSubframePatterns-v13xx can indicate the special subframe setting {10, 11} for the normal CP in the downlink and the special subframe setting {8, 9} for the extended CP in the downlink.

FIG. 14 is a diagram showing a relationship between three parameters indicating special subframe settings in the present embodiment. The setting in FIG. 14 means a special subframe setting. In FIG. 14, three parameters indicating special subframe settings correspond to the same serving cell.

(Case 1) The base station apparatus 3 changes to the special subframe setting 7 only when the downlink CP setting is an extended CP and the parameter specialSubframePatterns (without suffix) is set to a value corresponding to the special subframe setting 4. The parameter specialSubframePatterns-v1130 set to the corresponding value may be signaled.

(Case 2) The base station apparatus 3 sets the special subframe setting 8 only when the downlink CP setting is an extended CP and the parameter specialSubframePatterns (without suffix) is set to a value corresponding to the special subframe setting 4. You may signal the parameter specialSubframePatterns-v13xx set to the corresponding value. Here, the base station apparatus 3 does not signal the parameter specialSubframePatterns-v1130.

(Case 3) The base station device 3 sets the downlink CP setting to the extended CP, sets the parameter specialSubframePatterns (without suffix) to a value corresponding to the special subframe setting 4, and sets the parameter specialSubframePatterns-v1130 to the special Only when the value corresponding to the subframe setting 7 is set, the parameter specialSubframePatterns-v13xx set to the value corresponding to the special subframe setting 9 may be signaled.

(Case 4) The base station apparatus 3 sets the special subframe setting 9 only when the downlink CP setting is a normal CP and the parameter specialSubframePatterns (without suffix) is set to a value corresponding to the special subframe setting 5. The parameter specialSubframePatterns-v1130 set to the corresponding value may be signaled.

(Case 5) The base station apparatus 3 sets the special subframe setting 10 only when the downlink CP setting is a normal CP and the parameter specialSubframePatterns (without suffix) is set to a value corresponding to the special subframe setting 5. You may signal the parameter specialSubframePatterns-v13xx set to the corresponding value. Here, the base station apparatus 3 does not signal the parameter specialSubframePatterns-v1130.

(Case 6) The base station apparatus 3 sets the downlink CP setting to the normal CP, sets the parameter specialSubframePatterns (without suffix) to a value corresponding to the special subframe setting 5, and sets the parameter specialSubframePatterns-v1130 to the special Only when the value corresponding to the subframe setting 9 is set, the parameter specialSubframePatterns-v13xx set to the value corresponding to the special subframe setting 11 may be signaled.

If the parameter specialSubframePatterns-v1130 exists, the terminal device 1 may ignore the parameter specialSubframePatterns (without suffix). When the parameter specialSubframePatterns-v13xx exists, the terminal device 1 may ignore the parameter specialSubframePatterns-v1130. Since the parameter specialSubframePatterns-v13xx is dedicated control information between the base station apparatus 3 and the terminal apparatus 1, the base station apparatus 3 uses a parameter specialSubframePatterns-v1130 or a parameter specialSubframePatterns-v13xx in any serving cell. It is possible to control for each terminal device 1 whether to follow the above.

The capability information UECapabilityInformation transmitted in step S1304 may indicate some or all of the following. The capability information UECapabilityInformation may include one or more information / parameters that indicate some or all of the following:
(I) Combination of bands in which terminal device 1 supports carrier aggregation (ii) Whether terminal device 1 supports different UL-DL configurations in different TDD serving cells (component carriers) aggregated in different bands (iii) ) Whether the terminal device 1 supports simultaneous transmission / reception in different TDD serving cells (component carriers) aggregated in different bands (iv) When the terminal device 1 aggregates different serving cells belonging to different bands, Whether or not it is assumed that guard periods of special subframes in the different serving cells belonging to different bands have at least a predetermined number of seconds (for example, 1456 · T _s ) (v) the terminal device 1 is 3, or More than 3 Whether to support the special sub-frame set corresponding to the UpPTS, including Bol

For example, special subframe settings corresponding to UpPTS including three or more symbols include special subframe settings {10, 11} for normal CP in the downlink and special subframe settings for extended CP in the downlink. {8, 9}.

A part or all of the above (ii) to (iv) may be shown for each combination of bands indicated by (i). Part or all of the above (ii) to (iv) may not be related to the combination of bands indicated by (i).

By indicating one or more of (i) to (v), the other one of (i) to (v) may be indicated. For example, “terminal device 1 supports special subframe configuration corresponding to UpPTS including three or more symbols” indicates that “terminal device 1 has different serving cells belonging to different bands. Even when aggregated, the guard period of the special subframe in the different serving cell belonging to the different band should not be assumed to have at least a predetermined number of seconds (for example, 1456 · T _s ). Good.

When different serving cells belonging to different bands are aggregated, it is assumed that guard periods of special subframes in the different serving cells belonging to the different bands have at least a predetermined number of seconds (eg, 1456 · T _s ) overlap. The terminal device 1 switches between downlink reception processing and uplink transmission processing during the overlapping guard periods.

When different serving cells belonging to different bands are aggregated, it is not assumed that the guard periods of the special subframes in the different serving cells belonging to the different bands have at least a predetermined number of seconds (eg, 1456 · T _s ) overlap. The terminal device 1 may support simultaneous transmission / reception in different TDD serving cells (component carriers) aggregated in different bands, and may switch between downlink reception processing and uplink transmission processing for each band. .

Regardless of (iii), the terminal device 1 may not support simultaneous transmission and reception in different TDD serving cells (component carriers) aggregated in the same band. When the different serving cells belonging to the same band are aggregated regardless of (iv), the terminal device 1 determines that the GPs of the special subframes in the different serving cells belonging to the same band have at least a predetermined number of seconds of overlap. It may be assumed.

FIG. 15 and FIG. 16 are diagrams illustrating an example of special subframe settings for a plurality of TDD serving cells that are aggregated in the present embodiment. 15 and 16, the horizontal axis is a time axis, and the vertical axis is a frequency axis. 15 and 16, TDD serving cell 1500 and TDD serving cell 1502 are included in band A, and TDD serving cell 1504 and TDD serving cell 1506 are included in band B.

In FIG. 15, the special subframe setting for the TDD serving cell 1500 is 6, the special subframe setting for the TDD serving cell 1502 is 3, the special subframe setting for the TDD serving cell 1504 is 5, and the special subframe for the TDD serving cell 1506 The setting is 5.

In FIG. 16, the special subframe setting for the TDD serving cell 1500 is 6, the special subframe setting for the TDD serving cell 1502 is 3, the special subframe setting for the TDD serving cell 1504 is 10, and the special subframe for the TDD serving cell 1506 The setting is 10.

That is, in FIG. 15 and FIG. 16, the base station apparatus 3 uses the parameter specialSubframePatterns (without suffix) indicating the special subframe setting 6 for the TDD serving cell 1500 and the parameter specialSubframePatterns (without without) for the TDD serving cell 1502. suffix), a parameter specialSubframePatterns (without suffix) indicating the special subframe setting 5 for the TDD serving cell 1504, and a parameter specialSubframePatterns (without suffix) indicating the special subframe setting 5 for the TDD serving cell 1506 are broadcast. In FIG. 15, the base station device 3 does not transmit the parameter specialSubframePatterns-v13xx for the TDD serving cells 1500, 1502, 1504, 1506 to the terminal device 1. On the other hand, in FIG. 16, the base station device 3 transmits a parameter specialSubframePatterns-v13xx indicating the special subframe setting 10 for each of the TDD serving cells 1504 and 1506 to the terminal device 1.

In FIG. 15, the GPs of special subframes in TDD serving cells 1500 and 1502 belonging to band A overlap by 2192 · T _s . In FIG. 15, GPs of special subframes in TDD serving cells 1504 and 1506 belonging to band B overlap by 19744 · T _s . In FIG. 15, the GPs of special subframes in TDD serving cells 1500, 1502, 1504, and 1506 belonging to band A or band B overlap by 2192 · T _s . In Figure 15, GP special subframe in TDD a serving cell to be aggregated in different bands with duplicate of at least 1456 · T _s. Accordingly, in the special subframe configuration shown in FIG. 15, when different serving cells belonging to different bands are aggregated, the guard period of the special subframe in the different serving cells belonging to the different bands is at least a predetermined number of seconds (for example, 1456 · T _s ) is appropriate for the terminal device 1 that is assumed to have an overlap.

In FIG. 16, the GPs of special subframes in TDD serving cells 1500 and 1502 belonging to band A overlap 2192 · T _s . In FIG. 16, the GPs of special subframes in TDD serving cells 1504 and 1506 belonging to band B overlap by 2192 · T _s . In FIG. 16, the GPs of special subframes in TDD serving cells 1500, 1502, 1504, and 1506 belonging to band A or band B do not overlap. In Figure 16, GP special subframe in TDD a serving cell to be aggregated in different bands are the same as 1456 · T _s, or no greater than duplicate 1456 · T _s. Accordingly, in the special subframe configuration shown in FIG. 16, when different serving cells belonging to different bands are aggregated, the guard period of the special subframe in the different serving cells belonging to the different bands is at least a predetermined number of seconds (for example, 1456 · T _s ) is inappropriate for the terminal device 1 that is assumed to have duplication.

When different serving cells belonging to different bands are aggregated in step S1304, the base station apparatus 3 sets the guard period of the special subframe in the different serving cells belonging to the different bands to at least a predetermined number of seconds (for example, 1456 · T _s ) When the capability information UECapabilityInformation indicating that it is assumed that there is duplication is received from the terminal device 1, the parameter specialSubframePatterns-v13xx indicating the special subframe setting 10 for each of the TDD serving cells 1504 and 1506 in the terminal device 1 May not be transmitted to the terminal device 1. That is, the base station apparatus 3 may notify the terminal apparatus 1 of the special subframe setting shown in FIG.

When different serving cells belonging to different bands are aggregated in step S1304, the base station apparatus 3 sets the guard period of the special subframe in the different serving cells belonging to the different bands to at least a predetermined number of seconds (for example, 1456 · T _s ) When the capability information UECapabilityInformation indicating that no overlap is assumed is received from the terminal device 1, the parameter specialSubframePatterns-v13xx indicating the special subframe setting 10 for each of the TDD serving cells 1504 and 1506 in the terminal device 1 May be transmitted to the terminal device 1. That is, the base station apparatus may notify the terminal apparatus 1 of the special subframe setting shown in FIG.

As described above, by controlling the special subframe setting for each terminal device 1 according to the capability of the terminal device 1, the guard period resource can be used efficiently.

Hereinafter, SRS will be described.

The SRS sequence r _SRS (k) is multiplied by an amplitude scaling factor β _SRS to match the transmission power calculated for the SRS transmission, and is mapped to the resource element (k, l) according to equation (3). The

Where N _ap is the number of antenna ports used for SRS transmission, k _start is the frequency domain starting position defined by equation (4), and M ^RS _{sc, b} is according to equation (5). It is the length of the defined SRS sequence.

Here, k _TC ε {0,1} is given based at least on the parameters received from the base station apparatus 3. Here, the parameter / variable m _{SRS, b} used for calculating the length of the SRS sequence is given by at least referring to the uplink bandwidth setting N ^UL _RB and the UE specific parameter srs-Bandwidth. FIG. 17 is a diagram illustrating an example of values of the parameter m _{SRS, b (b = 0)} in the present embodiment. The parameter m _{SRS, b} is based on the SRS bandwidth setting c, the UE specific parameter srs-Bandwidth, and the uplink bandwidth setting N ^UL _RB . C _SRS is a set of SRS bandwidth settings {0,1, ..., 7}. The UE specific parameter srs-Bandwidth indicates one value from B _SRS ε {0,1,2,3}. In the present embodiment, the UE specific parameter srs-Bandwidth indicates “0”. In this embodiment, b = B _SRS = 0. The terminal device 1 receives information indicating the UE specific parameter srs-Bandwidth from the base station device 3.

In FIG. 17, when the SRS transmission bandwidth c is “2” and the value of the uplink transmission bandwidth N ^UL _RB is “100”, the value of the parameter m _{SRS, 0} is “80”. In this embodiment, the method for selecting the SRS transmission bandwidth c / parameter m _{SRS, 0} for the uplink subframe is different from the method for selecting the SRS transmission bandwidth c / parameter m _{SRS, 0} for UpPTS. In this embodiment, a method for selecting the SRS transmission bandwidth c / parameter m _{SRS, 0} for the first SC-FDMA symbol in UpPTS and the SRS transmission bandwidth c / parameter m for the second SC-FDMA symbol in UpPTS The selection method of _{SRS, 0} is different.

The parameter m _{SRS, 0} for the SRS transmitted in the last SC-FDMA symbol in the uplink subframe refers to the SRS transmission bandwidth setting c indicated by the cell specific parameter srs-BandwidthConfig received from the base station apparatus 3 Given by. For example, if the cell specific parameter srs-BandwidthConfig indicates SRS transmission bandwidth setting 2 and B _SRS = 0 and N ^UL _RB = 100, transmission is performed in the last SC-FDMA symbol in the uplink subframe. The parameter m _{SRS, 0} for the SRS to be performed is “80”.

FIG. 18 is a diagram illustrating an example of the SRS transmitted in the uplink subframe in the present embodiment. In FIG. 18, the SRS sequence is mapped to a resource element near the center of the uplink subframe of the serving cell in the frequency domain. In the frequency domain, PUCCH and PRACH are transmitted from a plurality of terminal apparatuses at the upper end and the lower end of the uplink subframe of the serving cell. The base station apparatus 3 controls the SRS transmission bandwidth setting c indicated by the cell specific parameter srs-BandwidthConfig so that the PUCCH / PRACH and the SRS do not collide.

FIG. 19 is a diagram illustrating an example of SRS transmitted in UpPTS when m _{SRS, 0} reconfiguration in the present embodiment is enabled.

For UpPTS, when m _{SRS, 0} resetting is enabled by the cell specific parameter srsMaxUpPts given by the upper layer, m _{SRS, 0} is reset based on Equation (6). The resetting of m _{SRS, 0} can be applied when b = B _SRS = 0. m Re-setting of _{SRS, 0} does not apply when B _SRS is not 0. The terminal device 1 receives information indicating the cell specific parameter srsMaxUpPts from the base station device 3.

Here, the function max outputs the largest m ^c _{SRS, 0} that does not exceed the predetermined value X among the plurality of m ^c _{SRS, 0} in parentheses {·}. m ^c _{SRS, 0} is a candidate for m _{SRS, 0} corresponding to each uplink bandwidth setting N ^UL _RB . For example, in FIG. 17, when the uplink bandwidth setting N ^UL _RB is “100”, a plurality of m ^c _{SRS, 0} are m _{SRS, 0} candidates {48,60 listed in the rightmost column. , 64, 72, 80, 96}. Here, for example, when the predetermined value X is “90”, m ^max _{SRS, 0} is “80”.

Here, the predetermined value X is given by Equation (7) or Equation (8).

Here, N _RA is the number of formats 4PRACH (resource) in UpPTS, it depends on the setting of the PRACH. The SC-FDMA symbol corresponding to Equation (7) is also referred to as a first symbol. The SC-FDMA symbol corresponding to Equation (8) is also referred to as a second symbol.

Whether the predetermined value X is given by Equation (7) or Equation (8) depends at least on the slot number / index n _s in the radio frame and / or the SC-FDMA symbol number / index l in the slot. It may be determined based on. For example, Equation (7) may be applied to the SRS transmitted in the SC-FDMA symbol in the slot satisfying n _s mod 2 = 0. For example, in the slot that satisfies _{n s mod 2 = 1, l} = N UL symb -Y or l <N ^UL _symb -Y formula against SRS transmitted in the SC-FDMA symbols satisfying (7) is applied Also good. For example, Equation (8) may be applied to SRS transmitted in an SC-FDMA symbol satisfying l> N ^UL _symb -Y in a slot satisfying n _s mod 2 = 1.

It is preferable to determine the value of Y so that format 4 PRACH and SRS do not overlap / collision in the frequency domain. For SC-FDMA symbols that do not overlap with format 4 PRACH in the time domain, a value of Y may be given based on Equation (7). For the SC-FDMA symbol that overlaps with format 4 PRACH in the time domain, a value of Y may be given based on Equation (8). Format 4 PRACH and UpPTS overlap during the period of (4382-N _TA ) · T _s . Here, N _TA is a timing offset between the uplink and downlink radio frames in the terminal device 1 calculated by the terminal device 1 based on a TA (Timing Advance) command received from the base station device 3. .

FIG. 20 is a diagram illustrating uplink transmission timing in the present embodiment. In the terminal device 1, the uplink radio frame (SRS) transmission timing is advanced (N _{TA +} N _TAoffset ) · T _s seconds from the downlink radio frame reception timing. Here, N _TAoffset is a fixed timing advance offset, which is “624” for TDD and “0” for FDD. Transmission of the format 4 PRACH starts 4438 · T _s before the end of the UpPTS based on the uplink radio frame transmission timing assuming N _TA = 0 in the terminal device 1. Therefore, format 4 PRACH and UpPTS overlap during the period of (4382-N _TA ) · T _s .

However, because the terminal device 1 cannot correctly receive the TA command transmitted by the base station device 3, the base station device 3 cannot grasp the accurate _NTA value in the terminal device 1. The value of N _TA is controlled for each terminal apparatus 1.

Therefore, Equation (7) may be applied to the UpPTS based on the uplink radio frame transmission timing assuming N _TA = 0 in the terminal device 1 and the period in which the format 4 PRACH does not overlap. Further, Equation (8) may be applied to the UpPTS based on the uplink radio frame transmission timing assuming N _TA = 0 in the terminal device 1 and the period in which the format 4 PRACH overlaps.

That is, the first symbol may be an SC-FDMA symbol that does not overlap with format 4 PRACH in UpPTS based on uplink radio frame transmission timing assuming N _TA = 0 in terminal apparatus 1. Further, the second symbol may be an SC-FDMA symbol overlapping with format 4 PRACH in UpPTS based on uplink radio frame transmission timing assuming N _TA = 0 in terminal apparatus 1.

Equation (7) is applied to the UpPTS based on the uplink radio frame transmission timing assuming N _TA = 0 in the terminal device 1 and a period in which the format 4 PRACH does not overlap, and N _TA = 0 in the terminal device 1 Y may be defined so that Equation (8) is applied to the UpPTS based on the uplink radio frame transmission timing and the period in which the format 4 PRACH overlaps.

Since the length of the SC-FDMA symbol is based on the uplink CP setting, the value of Y may be given according to the uplink CP setting. FIG. 21 is a diagram illustrating a relationship between uplink CPs and Y in the present embodiment. In FIG. 21, Y is “3” for the normal CP in the uplink and Y is “2” for the extended CP in the uplink.

FIG. 22 is a diagram illustrating an example of SRS transmitted in the UpPTS when m _{SRS, 0} resetting in the present embodiment is disabled. If resetting of m _{SRS, 0} is disabled _(disabled), m maxSRS, ₀ is given by Equation (9). That is, _when the reconfiguration of m _{SRS, 0} is disabled _, the value of m _{SRS, 0} for UpPTS is the same as the value of m _{SRS, 0} for the uplink subframe.

Hereinafter, the configuration of the apparatus according to the present embodiment will be described.

FIG. 23 is a schematic block diagram showing the configuration of the terminal device 1 of the present embodiment. As illustrated, the terminal device 1 includes a wireless transmission / reception unit 10 and an upper layer processing unit 14. The wireless transmission / reception unit 10 includes an antenna unit 11, an RF (Radio Frequency) unit 12, and a baseband unit 13. The upper layer processing unit 14 includes a medium access control layer processing unit 15, a radio resource control layer processing unit 16, and a selection unit 17. The wireless transmission / reception unit 10 is also referred to as a transmission unit, a reception unit, or a physical layer processing unit.

The upper layer processing unit 14 outputs the uplink data (transport block) generated by the user operation or the like to the radio transmission / reception unit 10. The upper layer processing unit 14 includes a medium access control (MAC: Medium Access Control) layer, a packet data integration protocol (Packet Data Convergence Protocol: PDCP) layer, a radio link control (Radio Link Control: RLC) layer, a radio resource control (Radio). Resource (Control: RRC) layer processing.

The medium access control layer processing unit 15 included in the upper layer processing unit 14 performs processing of the medium access control layer. The medium access control layer processing unit 15 controls transmission of the scheduling request based on various setting information / parameters managed by the radio resource control layer processing unit 16.

The radio resource control layer processing unit 16 included in the upper layer processing unit 14 performs processing of the radio resource control layer. The radio resource control layer processing unit 16 manages various setting information / parameters of the own device. The radio resource control layer processing unit 16 sets various setting information / parameters based on the upper layer signal received from the base station apparatus 3. That is, the radio resource control layer processing unit 16 sets various setting information / parameters based on information indicating various setting information / parameters received from the base station apparatus 3.

The wireless transmission / reception unit 10 performs physical layer processing such as modulation, demodulation, encoding, and decoding. The radio transmission / reception unit 10 separates, demodulates, and decodes the signal received from the base station apparatus 3 and outputs the decoded information to the upper layer processing unit 14. The radio transmission / reception unit 10 generates a transmission signal by modulating and encoding data, and transmits the transmission signal to the base station apparatus 3.

The RF unit 12 converts the signal received via the antenna unit 11 into a baseband signal by orthogonal demodulation (down-conversion: down covert), and removes unnecessary frequency components. The RF unit 12 outputs the processed analog signal to the baseband unit.

The baseband unit 13 converts the analog signal input from the RF unit 12 into a digital signal. The baseband unit 13 removes a portion corresponding to CP (Cyclic Prefix) from the converted digital signal, performs fast Fourier transform (FFT) on the signal from which CP has been removed, and generates a frequency domain signal. Extract.

The baseband unit 13 performs inverse fast Fourier transform (Inverse Fastier Transform: IFFT) to generate an SC-FDMA symbol, adds a CP to the generated SC-FDMA symbol, and converts a baseband digital signal into Generating and converting a baseband digital signal to an analog signal. The baseband unit 13 outputs the converted analog signal to the RF unit 12.

The RF unit 12 removes an extra frequency component from the analog signal input from the baseband unit 13 using a low-pass filter, up-converts the analog signal to a carrier frequency, and transmits the signal via the antenna unit 11. To do. The RF unit 12 amplifies power. Further, the RF unit 12 may have a function of controlling transmission power. The RF unit 12 is also referred to as a transmission power control unit.

FIG. 24 is a schematic block diagram showing the configuration of the base station apparatus 3 of the present embodiment. As shown in the figure, the base station apparatus 3 includes a radio transmission / reception unit 30 and an upper layer processing unit 34. The wireless transmission / reception unit 30 includes an antenna unit 31, an RF unit 32, and a baseband unit 33. The upper layer processing unit 34 includes a medium access control layer processing unit 35 and a radio resource control layer processing unit 36. The wireless transmission / reception unit 30 is also referred to as a transmission unit, a reception unit, or a physical layer processing unit.

The upper layer processing unit 34 includes a medium access control (MAC: Medium Access Control) layer, a packet data integration protocol (Packet Data Convergence Protocol: PDCP) layer, a radio link control (Radio Link Control: RLC) layer, a radio resource control (Radio). Resource (Control: RRC) layer processing.

The medium access control layer processing unit 35 included in the upper layer processing unit 34 performs processing of the medium access control layer. The medium access control layer processing unit 35 performs processing related to the scheduling request based on various setting information / parameters managed by the radio resource control layer processing unit 36.

The radio resource control layer processing unit 36 included in the upper layer processing unit 34 performs processing of the radio resource control layer. The radio resource control layer processing unit 36 generates downlink data (transport block), system information, RRC message, MAC CE (Control Element), etc. arranged in the physical downlink shared channel, or acquires it from the upper node. , Output to the wireless transceiver 30. The radio resource control layer processing unit 36 manages various setting information / parameters of each terminal device 1. The radio resource control layer processing unit 36 may set various setting information / parameters for each terminal device 1 via an upper layer signal. That is, the radio resource control layer processing unit 36 transmits / notifies information indicating various setting information / parameters.

Since the function of the wireless transmission / reception unit 30 is the same as that of the wireless transmission / reception unit 10, description thereof is omitted.

Hereinafter, various aspects of the terminal device 1 and the base station device 3 in the present embodiment will be described.

(1) A first aspect of the present embodiment is a terminal device 1 that communicates with the base station device 3 in a plurality of aggregated serving cells, and is configured with special subframe settings (specialSubframePatterns ( without suffix), specialSubframePatterns-v1130, and / or specialSubframePatterns-v13xx), and when different serving cells belonging to different bands are aggregated together with a receiving unit 10 receiving special parameters in the different serving cells belonging to the different bands A transmission unit that transmits capability information UECapabilityInformation indicating whether the terminal apparatus assumes that the guard period of the subframe has at least a predetermined number of seconds of overlap.

(2) In the first aspect of the present embodiment, when different serving cells belonging to the same band are aggregated, the terminal device 1 has at least the guard period of the special subframe in the different serving cells belonging to the same band. Assume that there is a predetermined number of seconds of overlap.

(3) In the first aspect of the present embodiment, the capability information UECapabilityInformation is a special subframe setting corresponding to UpPTS (Uplink Pilot Time Slot) including three symbols or more than three symbols. Indicates whether to support it.

(4) In the first aspect of the present embodiment, frame structure type 2 is used for each of the aggregated serving cells.

(5) A second aspect of the present embodiment is a base station device 3 that communicates with the terminal device 1 in a plurality of aggregated serving cells, and is a parameter for each of the aggregated serving cells, When the transmission unit 30 that transmits the parameters (specialSubframePatterns (without suffix), specialSubframePatterns-v1130, and / or specialSubframePatterns-v13xx) indicating the frame setting and the different serving cells belonging to different bands are aggregated, the different bands A receiving unit 30 that receives capability information UECapabilityInformation indicating whether the terminal apparatus assumes that the guard period of the special subframe in the different serving cell belonging to the network has at least a predetermined number of seconds of overlap.

(6) In the second aspect of the present embodiment, when different serving cells belonging to the same band are aggregated, the base station device 3 determines that the guard period of the special subframe in the different serving cells belonging to the same band is The value of the parameter is set so as to have at least a predetermined number of seconds of overlap.

(7) In the second mode of this embodiment, the capability information UECapabilityInformation is a special subframe setting corresponding to UpPTS (Uplink Pilot Time Slot) including three symbols or more than three symbols. Indicates whether to support it.

(8) In the second aspect of the present embodiment, frame structure type 2 is used for each of the aggregated serving cells.

(9) The third mode of the present embodiment is the terminal device 1 and receives the user equipment specific parameter srs-Bandwidth, the first cell specific parameter srs-BandwidthConfig, and the second cell specific parameter srsMaxUpPts. A reception unit 10 and a transmission unit 10 that transmits SRS (Sounding Reference Signal), wherein the first cell-specific parameter srs-BandwidthConfig indicates an SRS bandwidth setting c, and the second cell-specific parameter srsMaxUpPts Is that the reconfiguration of the first parameter m _{SRS, 0} used to calculate the length M ^RS _{sc, b} of the SRS sequence is applied to the UpPTS (Uplink Pilot Time Slot) of the special subframe are shown, with respect to an uplink subframe, the first value of the parameter m _{SRS, 0} is the user device-specific para Over data srs-Bandwidth, the first cell-specific parameter srs-BandwidthConfig, and, in an uplink bandwidth setting N ^UL _RB represented by a multiple of the size of the resource blocks in the frequency domain, at least on the basis, with respect to the UpPTS When the resetting of the first parameter m _{SRS, 0} is enabled by the second cell specific parameter srsMaxUpPts, the value m _{SRS, 0} of the first parameter is a predetermined value among a plurality of values. The predetermined value X is the same as the value X or smaller than the predetermined value X, and is the largest value among the plurality of values. For the first symbol in the UpPTS, the predetermined value X is wherein the value of the uplink bandwidth setting N ^UL _RB, for the second symbol in the UpPTS, the predetermined value X is the uplink bandwidth setting N ^UL value of _RB A et first value a value obtained by subtracting the first value is six times the value of the number N _RA format 4PRACH (Physical Random Access CHannel) in the UpPTS.

(10) In the third aspect of the present embodiment, the first symbol in the UpPTS includes a symbol preceding a predetermined symbol in the UpPTS in the time domain, and the second symbol in the UpPTS is In the time domain, the predetermined symbol and a symbol after the predetermined symbol are included.

(11) In the third aspect of the present embodiment, the number of the second symbols in the UpPTS is based on an uplink cyclic prefix setting.

(12) In the third aspect of the present embodiment, when the reconfiguration of the first parameter m _{SRS, 0} is invalidated by the second cell specific parameter srsMaxUpPts for the UpPTS, 1 of the value of the parameter m _{SRS, 0} is the same as the first value of the parameter m _{SRS, 0} for the uplink subframe.

(13) In the third aspect of the present embodiment, the plurality of values are based at least on the value of the uplink bandwidth setting N ^UL _RB .

(14) In the third aspect of the present embodiment, the plurality of values correspond to at least the value of the SRS bandwidth setting.

(15) In the third mode of the present embodiment, the first parameter resetting m _{SRS, 0} is applied only when the value of the user equipment specific parameter srs-Bandwidth is zero.

(16) In the third aspect of this embodiment, the plurality of values are candidates for the value of the first parameter m _{SRS, 0} for the uplink bandwidth setting N ^UL _RB .

(17) In the third aspect of the present embodiment, the plurality of values are the SRS bandwidth setting for the uplink bandwidth setting N ^UL _RB when the value of the user equipment specific parameter srs-Bandwidth is 0. Corresponds to set C _SRS .

(18) The fourth aspect of the present embodiment is the base station apparatus 3, which transmits the user apparatus specific parameter srs-Bandwidth, the first cell specific parameter srs-BandwidthConfig, and the second cell specific parameter srsMaxUpPts. Transmitting section 30 and receiving section 30 receiving SRS (Sounding Reference Signal), wherein the first cell specific parameter srs-BandwidthConfig indicates SRS bandwidth setting c, and the second cell specific parameter In srsMaxUpPts, re-setting of the first parameter m _{SRS, 0} used to calculate the length M ^RS _{sc, b} of the SRS sequence is applied to the UpPTS (Uplink Pilot Time Slot) of the special subframe. indicates that, with respect to an uplink subframe, the first value of the parameter m _{SRS, 0} is the user device-specific Parameter srs-Bandwidth, the first cell-specific parameter srs-BandwidthConfig, and, in an uplink bandwidth setting N ^UL _RB represented by a multiple of the size of the resource blocks in the frequency domain, at least on the basis, with respect to the UpPTS, When re-setting of the first parameter m _{SRS, 0} is enabled by the second cell specific parameter srsMaxUpPts, the value m _{SRS, 0} of the first parameter is a predetermined value among a plurality of values. X is a value that is the same as or smaller than the predetermined value X and is the largest value among the plurality of values, and for the first symbol in the UpPTS, the predetermined value X is the value the value of the uplink bandwidth setting N ^UL _RB, for the second symbol in the UpPTS, the predetermined value X is the uplink bandwidth setting N ^UL _RB Is a value obtained by subtracting the first value from the value, the first value is six times the value of the number N _RA format 4PRACH (Physical Random Access CHannel) in the UpPTS.

(19) In the fourth aspect of the present embodiment, the first symbol in the UpPTS includes a symbol preceding a predetermined symbol in the UpPTS in the time domain, and the second symbol in the UpPTS is In the time domain, the predetermined symbol and a symbol after the predetermined symbol are included.

(20) In the fourth aspect of the present embodiment, the number of the second symbols in the UpPTS is based on an uplink cyclic prefix setting.

(21) In the fourth aspect of the present embodiment, when the reconfiguration of the first parameter m _{SRS, 0} is invalidated by the second cell specific parameter srsMaxUpPts for the UpPTS, 1 of the value of the parameter m _{SRS, 0} is the same as the first value of the parameter m _{SRS, 0} for the uplink subframe.

(22) In the fourth aspect of the present embodiment, the plurality of values are based on at least the value of the uplink bandwidth setting N ^UL _RB .

(23) In the fourth aspect of the present embodiment, the plurality of values correspond to at least the value of the SRS bandwidth setting.

(24) In the fourth aspect of the present embodiment, the first parameter reset m _{SRS, 0} is applied only when the value of the user apparatus specific parameter srs-Bandwidth is zero.

(25) In the fourth aspect of this embodiment, the plurality of values are candidates for the value of the first parameter m _{SRS, 0} for the uplink bandwidth setting N ^UL _RB .

(26) In the fourth aspect of this embodiment, the plurality of values may be the SRS bandwidth setting for the uplink bandwidth setting N ^UL _RB when the value of the user equipment specific parameter srs-Bandwidth is 0. Corresponds to set C _SRS .

Thereby, the terminal device and the base station device can communicate efficiently with each other using UpPTS or SRS.

A program that operates in the base station device 3 and the terminal device 1 related to the present invention is a program that controls a CPU (Central Processing Unit) or the like (a computer is functioned) so as to realize the functions of the above-described embodiments related to the present invention Program). Information handled by these devices is temporarily stored in RAM (Random Access Memory) during processing, and then stored in various ROMs such as Flash ROM (Read Only Memory) and HDD (Hard Disk Drive). Reading, correction, and writing are performed by the CPU as necessary.

In addition, you may make it implement | achieve the terminal device 1 in the embodiment mentioned above, and a part of base station apparatus 3 with a computer. In that case, the program for realizing the control function may be recorded on a computer-readable recording medium, and the program recorded on the recording medium may be read by the computer system and executed.

Note that the “computer system” here is a computer system built in the terminal device 1 or the base station device 3 and includes hardware such as an OS and peripheral devices. The “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM or a CD-ROM, and a hard disk incorporated in a computer system.

Furthermore, the “computer-readable recording medium” is a medium that dynamically holds a program for a short time, such as a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line, In such a case, a volatile memory inside a computer system serving as a server or a client may be included and a program that holds a program for a certain period of time. The program may be a program for realizing a part of the functions described above, and may be a program capable of realizing the functions described above in combination with a program already recorded in a computer system.

Also, the base station device 3 in the above-described embodiment can be realized as an aggregate (device group) composed of a plurality of devices. Each of the devices constituting the device group may include a part or all of each function or each functional block of the base station device 3 according to the above-described embodiment. The device group only needs to have one function or each function block of the base station device 3. The terminal device 1 according to the above-described embodiment can also communicate with the base station device as an aggregate.

Further, the base station apparatus 3 in the above-described embodiment may be EUTRAN (Evolved Universal Terrestrial Radio Access Network). In addition, the base station device 3 in the above-described embodiment may have a part or all of the functions of the upper node for the eNodeB.

In addition, a part or all of the terminal device 1 and the base station device 3 in the above-described embodiment may be realized as an LSI that is typically an integrated circuit, or may be realized as a chip set. Each functional block of the terminal device 1 and the base station device 3 may be individually chipped, or a part or all of them may be integrated into a chip. Further, the method of circuit integration is not limited to LSI, and may be realized by a dedicated circuit or a general-purpose processor. In addition, when an integrated circuit technology that replaces LSI appears due to progress in semiconductor technology, an integrated circuit based on the technology can also be used.

In the above-described embodiment, the terminal device is described as an example of the communication device. However, the present invention is not limited to this, and the stationary or non-movable electronic device installed indoors or outdoors, For example, the present invention can also be applied to terminal devices or communication devices such as AV equipment, kitchen equipment, cleaning / washing equipment, air conditioning equipment, office equipment, vending machines, automobiles, bicycles, and other living equipment.

As described above, the embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and includes design changes and the like without departing from the gist of the present invention. The present invention can be modified in various ways within the scope of the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments are also included in the technical scope of the present invention. It is. Moreover, it is the element described in each said embodiment, and the structure which substituted the element which has the same effect is also contained.

1 (1A, 1B, 1C) Terminal device 3 Base station device 10 Radio transmission / reception unit 11 Antenna unit 12 RF unit 13 Baseband unit 14 Upper layer processing unit 15 Medium access control layer processing unit 16 Radio resource control layer processing unit 17 Selection unit DESCRIPTION OF SYMBOLS 30 Radio transmission / reception part 31 Antenna part 32 RF part 33 Baseband part 34 Upper layer process part 35 Medium access control layer process part 36 Radio | wireless resource control layer process part

Claims (24)

1. A terminal device that communicates with a base station device in a plurality of serving cells to be aggregated,
   A receiving unit for receiving a parameter indicating a special subframe setting for each of a plurality of serving cells to be aggregated;
   Indicates whether the terminal apparatus assumes that the guard period of the special subframe in the different serving cells belonging to the different bands has at least a predetermined number of seconds when different serving cells belonging to different bands are aggregated And a transmission unit that transmits capability information.
2. The terminal apparatus according to claim 1, wherein when different serving cells belonging to the same band are aggregated, the guard period of the special subframe in the different serving cells belonging to the same band is assumed to have at least a predetermined number of seconds.
3. The terminal device according to claim 1 or 2, wherein the capability information indicates whether or not the terminal device supports a special subframe setting corresponding to UpPTS (Uplink Pilot Time Slot) including three symbols or more than three symbols. .
4. The terminal device according to any one of claims 1 to 3, wherein a frame structure type 2 is used for each of the plurality of serving cells to be aggregated.
5. A base station apparatus that communicates with a terminal apparatus in a plurality of serving cells to be aggregated,
   A parameter for each of a plurality of serving cells to be aggregated, and a transmitter that transmits the parameter indicating the setting of a special subframe;
   Whether or not the terminal device assumes that the guard period of the special subframe in the different serving cells belonging to the different bands has an overlap of at least a predetermined number of seconds when different serving cells belonging to different bands are aggregated A base station apparatus comprising: a reception unit that receives the capability information indicated.
6. When different serving cells belonging to the same band are aggregated, the value of the parameter is set so that the guard period of the special subframe in the different serving cells belonging to the same band has at least a predetermined number of seconds of overlap. The base station apparatus according to claim 5.
7. The base station according to claim 5 or 6, wherein the capability information indicates whether or not the terminal apparatus supports a special subframe setting corresponding to UpPTS (Uplink Pilot Time Slot) including three symbols or more than three symbols. apparatus.
8. The base station apparatus according to any one of claims 5 to 7, wherein a frame structure type 2 is used for each of the plurality of aggregated serving cells.
9. A communication method used for a terminal apparatus that communicates with a base station apparatus in a plurality of aggregated serving cells,
   Receiving a parameter indicating a special subframe configuration for each of a plurality of serving cells to be aggregated;
   Indicates whether the terminal apparatus assumes that the guard period of the special subframe in the different serving cells belonging to the different bands has at least a predetermined number of seconds when different serving cells belonging to different bands are aggregated A communication method that transmits capability information.
10. The communication method according to claim 9, wherein when different serving cells belonging to the same band are aggregated, it is assumed that the guard period of the special subframe in the different serving cells belonging to the same band has at least a predetermined number of seconds.
11. The communication method according to claim 9 or 10, wherein the capability information indicates whether or not the terminal device supports a special subframe setting corresponding to UpPTS (Uplink Pilot Time Slot) including three symbols or more than three symbols. .
12. The communication method according to any one of claims 9 to 11, wherein frame structure type 2 is used for each of the aggregated serving cells.
13. A communication method used in a base station apparatus that communicates with a terminal apparatus in a plurality of serving cells to be aggregated,
    A parameter for each of a plurality of serving cells to be aggregated, wherein the parameter indicating a setting of a special subframe is transmitted;
    Whether or not the terminal device assumes that the guard period of the special subframe in the different serving cells belonging to the different bands has an overlap of at least a predetermined number of seconds when different serving cells belonging to different bands are aggregated A communication method that receives the capability information indicated.
14. When different serving cells belonging to the same band are aggregated, the value of the parameter is set so that the guard period of the special subframe in the different serving cells belonging to the same band has at least a predetermined number of seconds of overlap. The communication method according to claim 13.
15. The communication method according to claim 13 or 14, wherein the capability information indicates whether or not the terminal device supports a special subframe setting corresponding to UpPTS (Uplink Pilot Time Slot) including three symbols or more than three symbols. .
16. The communication method according to any one of claims 13 to 15, wherein a frame structure type 2 is used for each of the aggregated serving cells.
17. An integrated circuit mounted on a terminal device that communicates with a base station device in a plurality of aggregated serving cells,
    A receiving circuit that receives a parameter indicating a special subframe setting for each of a plurality of serving cells to be aggregated;
    Indicates whether the terminal apparatus assumes that the guard period of the special subframe in the different serving cells belonging to the different bands has at least a predetermined number of seconds when different serving cells belonging to different bands are aggregated An integrated circuit comprising: a transmission circuit that transmits capability information;
18. The integrated circuit according to claim 17, wherein when different serving cells belonging to the same band are aggregated, it is assumed that the guard period of the special subframe in the different serving cells belonging to the same band has at least a predetermined number of seconds.
19. The integrated circuit according to claim 17 or 18, wherein the capability information indicates whether or not the terminal device supports a special subframe setting corresponding to UpPTS (Uplink Pilot Time Slot) including three symbols or more than three symbols. .
20. The integrated circuit according to any one of claims 17 to 19, wherein a frame structure type 2 is used for each of the aggregated serving cells.
21. An integrated circuit implemented in a base station device that communicates with a terminal device in a plurality of serving cells that are aggregated,
    A transmission circuit that transmits the parameter indicating the setting of the special subframe, which is a parameter for each of a plurality of serving cells to be aggregated;
    Whether or not the terminal device assumes that the guard period of the special subframe in the different serving cells belonging to the different bands has an overlap of at least a predetermined number of seconds when different serving cells belonging to different bands are aggregated An integrated circuit comprising: a receiving circuit that receives the capability information indicated;
22. When different serving cells belonging to the same band are aggregated, the value of the parameter is set so that the guard period of the special subframe in the different serving cells belonging to the same band has at least a predetermined number of seconds of overlap. The integrated circuit of claim 21.
23. The integrated circuit according to claim 21 or 22, wherein the capability information indicates whether or not the terminal device supports a special subframe setting corresponding to an UpPTS (Uplink Pilot Time Slot) including three symbols or more than three symbols. .
24. The integrated circuit according to any one of claims 21 to 23, wherein a frame structure type 2 is used for each of the aggregated serving cells.

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