WO2017002801A1 - Terminal device, base station, communication method, and integrated circuit - Google Patents

Abstract

A terminal device, wherein if settings are performed in such a manner that a DCI to which a first CRC parity bit has been assigned is monitored, the DCI to which a first CRC parity bit has been assigned is monitored in at least the user equipment specific search space assigned by C-RNTI, and if settings have not been performed so that the DCI to which the second CRC parity bit is assigned in the common search space is monitored, and the DCI to which the first CRC parity bit is assigned is monitored in the common search space, the DCI to which the second CRC parity bit is assigned is monitored in the user equipment specific search space, and the DCI to which the second CRC parity bit is assigned is monitored in the common search space.

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. 2015-129426 filed in Japan on June 29, 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 a third generation partnership project (3rd Generation Partnership Project: 3GPP (Non-patent document 1, Non-patent document 2, Non-patent document 3, Non-patent document 4, and Non-patent document 5). 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. Here, a single base station apparatus may manage a plurality of cells.

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, carrier aggregation that allows transmission and / or reception at the same time in a serving cell (component carrier) with up to five terminal devices is specified.

Also, in 3GPP, it is considered that a terminal device performs transmission and / or reception simultaneously in a serving cell (component carrier) that exceeds five. Furthermore, it has been studied that the terminal device performs transmission on the physical uplink control channel in the secondary cell that is a serving cell other than the primary cell (Non-Patent Document 6).

Some aspects of the present invention provide a terminal device, a base station device, a communication method, and an integrated circuit in which the base station device and the terminal device can efficiently communicate in the wireless communication system as described above. The purpose is to do.

(1) In order to achieve the above object, the aspect of the present invention takes the following measures. That is, the terminal apparatus according to an aspect of the present invention receives information on the DCI monitor to which the first CRC parity bit is added from the base station apparatus, and receives the first CRC parity bit or the second CRC parity. A user equipment specific unit provided by C-RNTI when the terminal apparatus is configured to monitor the DCI to which the first CRC parity bit is added. The DCI added with the first CRC parity bit is monitored in a search space, and the DCI added with the second CRC parity bit is monitored in a common search space, and the first CRC parity bit is monitored. The terminal device is set to monitor the DCI to which is added. The DCI with the second CRC parity bit added in the user equipment specific search space given by at least the C-RNTI, and the second CRC parity bit in the common search space. Is added, the number of the first CRC parity bits is a first value, and the number of the second CRC parity bits is a second value.

(2) In addition, the base station apparatus according to an embodiment of the present invention transmits information related to DCI monitoring to which the first CRC parity bit is added to the terminal apparatus, and the first CRC parity bit or the second When the terminal device is set to monitor the DCI to which the first CRC parity bit is added, the transmitter is configured to transmit at least C-RNTI. Transmitting the DCI to which the first CRC parity bit is added in a user equipment specific search space given by, and transmitting the DCI to which the second CRC parity bit is added in a common search space, The terminal apparatus monitors the DCI to which the first CRC parity bit is added. If not set, the DCI with the second CRC parity bit added is transmitted in the user equipment specific search space given by at least the C-RNTI, and the second CRC is transmitted in the common search space. The DCI with the parity bit added is transmitted, the number of the first CRC parity bits is a first value, and the number of the second CRC parity bits is a second value.

(3) A communication method according to an embodiment of the present invention is a communication method of a terminal device, which receives information on DCI monitoring added with a first CRC parity bit from a base station device, and In the case where the terminal device is set to monitor the DCI to which the first CRC parity bit is added and the DCI to which the first CRC parity bit is added, at least C− Monitoring the DCI with the first CRC parity bit added in a user equipment specific search space given by the RNTI, and monitoring the DCI with the second CRC parity bit added in a common search space; The terminal is monitored to monitor DCI with the first CRC parity bit added. When no device is set, the DCI with the second CRC parity bit added is monitored in the user device specific search space provided by at least the C-RNTI, and the second search is performed in the common search space. The DCI to which the CRC parity bits are added is monitored, the number of the first CRC parity bits is a first value, and the number of the second CRC parity bits is a second value.

(4) A communication method according to an aspect of the present invention is a communication method of a base station apparatus, which transmits information related to DCI monitoring to which a first CRC parity bit is added to a terminal apparatus, and When the terminal device is set to monitor the DCI to which the first CRC parity bit is added and the DCI to which the first CRC parity bit is added is transmitted to the terminal device. Transmitting the DCI with the first CRC parity bit added in at least a user equipment specific search space given by C-RNTI, and the DCI with the second CRC parity bit added in a common search space And monitor the DCI with the first CRC parity bit added. When not set in the terminal device, the DCI with the second CRC parity bit added is transmitted in the user device specific search space given by at least the C-RNTI, and in the common search space The DCI to which a second CRC parity bit is added is transmitted, the number of the first CRC parity bits is a first value, and the number of the second CRC parity bits is a second value.

(5) An integrated circuit according to one embodiment of the present invention is an integrated circuit mounted on a terminal device, and receives information on monitoring of DCI to which a first CRC parity bit is added from a base station device, The terminal device is provided with a function of monitoring the DCI to which the first CRC parity bit or the second CRC parity bit is added, and the DCI to which the first CRC parity bit is added is monitored. When the terminal device is set, the DCI to which the first CRC parity bit is added is monitored in at least a user equipment specific search space given by C-RNTI, and the second CRC is in a common search space. The DCI with the parity bit added is monitored and the first CRC parity bit is monitored. When the terminal apparatus is not set to monitor the DCI to which the second CRC parity bit is added, the DCI to which the second CRC parity bit is added is monitored in the user equipment specific search space given by the C-RNTI. The DCI to which the second CRC parity bit is added is monitored in the common search space, the number of the first CRC parity bits is a first value, and the second CRC parity bit The number is the second value.

(6) An integrated circuit according to one embodiment of the present invention is an integrated circuit mounted on a base station apparatus, and transmits information related to DCI monitoring to which a first CRC parity bit is added to a terminal apparatus, The base station apparatus has a function of transmitting DCI to which the first CRC parity bit or the second CRC parity bit is added to the terminal apparatus, and the first CRC parity bit is added. When the terminal apparatus is set to monitor DCI, the DCI with the first CRC parity bit added is transmitted in at least a user apparatus specific search space given by C-RNTI, and in the common search space. The DCI with the second CRC parity bit added is transmitted, and the first CRC packet is transmitted. When the terminal device is not set to monitor the DCI to which the BIT bit is added, the DCI to which the second CRC parity bit is added is transmitted in the user device specific search space given by at least the C-RNTI. And transmitting the DCI with the second CRC parity bit added in the common search space, wherein the number of the first CRC parity bits is a first value, and the second CRC parity bits Is the second value.

According to some aspects of the present invention, the base station apparatus and the terminal apparatus can communicate efficiently.

It is a figure which shows the concept of the radio | wireless communications system in this embodiment. It is a 1st figure explaining the cell group in this embodiment. It is a 2nd figure explaining the cell group in this embodiment. It is a 3rd figure explaining the cell group in this embodiment. It is a figure which shows the structure of the slot in this embodiment. It is a figure for demonstrating addition of the CRC parity bit in this embodiment. It is a figure for demonstrating the scrambling of the CRC parity bit by RNTI in this embodiment. It is another figure for demonstrating the scrambling of the CRC parity bit by RNTI in this embodiment. It is another figure for demonstrating the scrambling of the CRC parity bit by RNTI in this embodiment. It is another figure for demonstrating the scrambling of the CRC parity bit by RNTI in this embodiment. It is another figure for demonstrating the downlink control information to which the CRC parity bit in this embodiment is added. It is a figure for demonstrating the antenna selection mask with respect to 16 bit CRC in this embodiment. It is a figure for demonstrating the antenna selection mask with respect to 24-bit CRC in this embodiment. It is a schematic block diagram which shows the structure of the terminal device 1 in this embodiment. It is a schematic block diagram which shows the structure of the base station apparatus 3 in this embodiment.

Hereinafter, embodiments of the present invention will be described.

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

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

In FIG. 1, the following uplink physical channels are used in uplink wireless communication from the terminal device 1 to the base station device 3. Here, the uplink physical channel is used to transmit 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). Here, the uplink control information may include channel state information (CSI: Channel State Information) used to indicate the state of the downlink channel. Further, the uplink control information may include a scheduling request (SR: “Scheduling” Request) used for requesting the UL-SCH resource. Further, the uplink control information may include HARQ-ACK (Hybrid Automatic Repeat request ACKnowledgement). HARQ-ACK may indicate HARQ-ACK for downlink data (Transport block, Medium Access Control Protocol Data Unit: MAC-PDU, Downlink-Shared Channel: DL-SCH, Physical Downlink Shared Channel: PDSCH).

That is, HARQ-ACK may indicate ACK (acknowledgement) or NACK (negative-acknowledgement). Here, HARQ-ACK is also referred to as ACK / NACK, HARQ feedback, HARQ response, HARQ information, or HARQ control information.

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 CSI along with uplink data. Also, the PUSCH may be used to transmit only CSI, or only HARQ-ACK and CSI. That is, PUSCH may be used to transmit only uplink control information.

Here, 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. Further, the base station device 3 and the terminal device 1 may transmit and receive a MAC control element in a MAC (Medium Access Control) layer. Here, the RRC signaling and / or the MAC control element is also referred to as a higher layer signal.

PUSCH may be used to transmit RRC signaling and MAC control elements. Here, the RRC signaling transmitted from the base station apparatus 3 may be common signaling for a plurality of terminal apparatuses 1 in the cell. Further, the RRC signaling transmitted from the base station device 3 may be signaling dedicated to a certain terminal device 1 (also referred to as dedicated signaling). That is, user device specific (user device specific) information may be transmitted to a certain terminal device 1 using dedicated signaling.

PRACH is used to transmit a random access preamble. PRACH may also be used to indicate initial connection establishment (initial ハ ン ド オ ー バ connection establishment) procedures, handover procedures, connection re-establishment procedures, synchronization for uplink transmissions (timing adjustment), and PUSCH resource requirements. Good.

In FIG. 1, the following uplink physical signals are used in uplink wireless communication. Here, the uplink physical signal is not used for transmitting information output from the higher layer, but is 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 uses SRS to measure the uplink channel state.

In FIG. 1, the following downlink physical channels are used in downlink radio communication from the base station apparatus 3 to the terminal apparatus 1. Here, the downlink physical channel is used to transmit 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). Here, a plurality of DCI formats are defined for transmission of downlink control information. That is, fields for downlink control information are defined in the DCI format and mapped to information bits.

For example, a DCI format (for example, DCI format 1A, DCI format 1C) used for scheduling one PDSCH (transmission of one downlink transport block) in one cell is defined as a DCI format for the downlink. May be.

Here, the DCI format for the downlink includes information related to PDSCH scheduling. For example, the DCI format for the downlink includes downlink control information such as a carrier indicator field (CIF), information on resource block allocation, information on MCS (Modulation and Coding Scheme), and the like. Here, the DCI format for the downlink is also called a downlink grant (downlink grant) or a downlink assignment (downlink assignment).

Further, for example, as a DCI format for uplink, DCI formats (for example, DCI format 0, DCI format 4) used for scheduling one PUSCH (transmission of one uplink transport block) in one cell are used. Defined.

Here, the information on PUSCH scheduling is included in the DCI format for the uplink. For example, the DCI format for the uplink includes a carrier indicator field (CIF), information on resource block assignment and / or hopping (Resource block assignment and and / or hopping resource allocation), MCS and / or redundancy sea version. This includes downlink control information such as information on (Modulation and coding scheme and / or redundancy and version) and information used to indicate the number of transmission layers (Precoding information and number number of layers). Here, the DCI format for the uplink is also referred to as an uplink grant or an uplink assignment.

When the PDSCH resource is scheduled using the downlink assignment, the terminal device 1 may receive the downlink data using the scheduled PDSCH. Moreover, when the PUSCH resource is scheduled using the uplink grant, the terminal device 1 may transmit the uplink data and / or the uplink control information using the scheduled PUSCH.

Here, the terminal device 1 may monitor a set of PDCCH candidates (PDCCH candidates) and / or EPDCCH candidates (EPDCCH candidates). Hereinafter, PDCCH may indicate PDCCH and / or EPDDCH. That is, in the present embodiment, PDCCH and EPDCCH are collectively referred to simply as PDCCH. Moreover, in this embodiment, a PDCCH candidate and an EPDCCH candidate are generically referred to simply as a PDCCH candidate.

Here, the PDCCH candidate indicates a candidate in which the PDCCH may be arranged and / or transmitted by the base station apparatus 3. In addition, the term “monitor” may include the meaning that the terminal apparatus 1 attempts to decode each PDCCH in the set of PDCCH candidates according to all the DCI formats to be monitored. A set of PDCCH candidates monitored by the terminal device 1 and / or a set of EPDCCH candidates monitored by the terminal device 1 are also referred to as a search space.

Here, the search space may include a common search space (CSS: Common Search Space). For example, the CSS may be defined as a common space for the plurality of terminal devices 1. The search space may include a user device specific search space (USS: “UE-specific” Search “Space”). For example, the USS may be given by at least a C-RNTI (Cell-Radio Network Temporary Identifier) assigned to the terminal device 1 (may be defined based on the C-RNTI). Further, for example, the USS may be given at least by the Temporary C-RNTI assigned to the terminal device 1 (may be defined based on the Temporary C-RNTI).

That is, the terminal device 1 may monitor the PDCCH and detect the PDCCH addressed to itself in the CSS and / or USS. Moreover, the terminal device 1 may monitor EPDCCH in CSS and / or USS, and may detect EPDCCH addressed to its own device.

Here, the RNTI assigned to the terminal device 1 by the base station device 3 is used for transmission of the downlink control information (transmission on the PDCCH). Specifically, CRC (Cyclic Redundancy check) parity bits are added to the DCI format (DCI: may be downlink control information), and after the CRC parity bits are added, the CRC parity bits are scrambled by RNTI. Here, the CRC parity bit added to the DCI format may be obtained from the payload of the corresponding DCI format.

That is, the terminal device 1 tries to decode the DCI format to which the CRC parity bit scrambled by the RNTI is added, and detects the DCI format in which the CRC is successful as the DCI format addressed to the own device (also known as blind decoding). Called). That is, the terminal device 1 may detect the PDCCH accompanied by the CRC scrambled by the RNTI. Further, the terminal device 1 may detect a PDCCH accompanied by a DCI format to which a CRC parity bit scrambled by RNTI is added.

Here, the RNTI may include a C-RNTI (Cell-Radio Network Temporary Identifier). The C-RNTI is a unique (unique) identifier for the terminal device 1 used for RRC connection and scheduling identification. C-RNTI may also be used for dynamically scheduled unicast transmissions.

RNTI may include SPS C-RNTI (Semi-Persistent Scheduling C-RNTI). Here, the SPS C-RNTI is a unique (unique) identifier for the terminal device 1 used for semi-persistent scheduling. SPS C-RNTI may also be used for semi-persistently scheduled unicast transmissions.

RNTI may include Temporary C-RNTI. Here, Temporary C-RNTI is a unique (unique) identifier for the preamble transmitted by the terminal device 1 used during the contention-based random access procedure. Temporary C-RNTI may also be used for dynamically scheduled transmissions.

PDSCH is used to transmit downlink data (Downlink Shared Channel: DL-SCH). The PDSCH is used for transmitting a system information message. Here, the system information message may be cell specific (cell specific) information. System information is included in RRC signaling. The PDSCH is used to transmit RRC signaling and a MAC control element.

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

In FIG. 1, the following downlink physical signals are used in downlink wireless communication. Here, the downlink physical signal is not used for transmitting 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. Here, the downlink reference signal is used for the terminal apparatus 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)

Here, 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.

Hereafter, carrier aggregation will be described.

In the present embodiment, one or a plurality of serving cells may be set for the terminal device 1. A technique in which the terminal device 1 communicates via a plurality of serving cells is referred to as cell aggregation or carrier aggregation.

Here, the present embodiment may be applied to each of one or a plurality of serving cells set for the terminal device 1. Further, the present embodiment may be applied to a part of one or a plurality of serving cells set for the terminal device 1. Further, the present embodiment may be applied to each of one or a plurality of serving cell groups (for example, a PUCCH cell group or a timing advance group) set for the terminal device 1 described later. In addition, the present embodiment may be applied to a part of one or a plurality of serving cell groups set for the terminal device 1.

In the present embodiment, TDD (Time Division Duplex) and / or FDD (Frequency Division Duplex) may be applied. Here, in the case of carrier aggregation, TDD or FDD may be applied to all of one or a plurality of serving cells. In the case of carrier aggregation, a serving cell to which TDD is applied and a serving cell to which FDD is applied may be aggregated. Here, the frame structure corresponding to FDD is also referred to as “frame structure type 1”. The frame structure corresponding to TDD is also referred to as “frame structure type 2”.

Here, the set one or more serving cells include one primary cell and one or more secondary cells. The primary cell may be a serving cell that has undergone an initial connection establishment (initial connectionabestablishment) procedure, a serving cell that has initiated a connection re-establishment procedure, or a cell designated as a primary cell in a handover procedure. Good. Here, the secondary cell may be set at the time when the RRC connection is established or later.

Here, 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. Further, the downlink component carrier and the uplink component carrier are collectively referred to as a component carrier.

Further, the terminal device 1 may perform transmission and / or reception on a plurality of physical channels simultaneously in one or a plurality of serving cells (component carriers). Here, one physical channel may be transmitted in one serving cell (component carrier) among a plurality of serving cells (component carriers).

Here, the primary cell is used for transmission of PUCCH. Also, the primary cell is not deactivated (primary cell cannot be deactivated). Cross-carrier scheduling is not applied to primary (Cross-carrier scheduling does not apply to primary cell). That is, the primary cell is always scheduled using the PDCCH in the primary cell (primary cell is always scheduled via its PDCCH).

Further, when PDCCH (may be monitored by PDCCH) is set in a certain secondary cell, the cross carrier scheduling may not be applied to the certain secondary cell (In a case that PDCCH (PDCCH monitoring) of a secondary cell is configured, cross-carries scheduling may not apply this secondary cell). That is, in this case, the secondary cell may always be scheduled using the PDCCH in the secondary cell. Further, when PDCCH (which may be monitored by PDCCH) is not set in a certain secondary cell, cross-carrier scheduling is applied, and the secondary cell is always PDCCH in one other serving cell (one other serving cell). May be scheduled.

Here, in this embodiment, the secondary cell used for transmission of PUCCH is called a PUCCH secondary cell and a special secondary cell. Also, secondary cells that are not used for PUCCH transmission are referred to as non-PUCCH secondary cells, non-special secondary cells, non-PUCCH serving cells, and non-PUCCH cells. Further, the primary cell and the PUCCH secondary cell are collectively referred to as a PUCCH serving cell and a PUCCH cell.

Here, the PUCCH serving cell (primary cell, PUCCH secondary cell) always has a downlink component carrier and an uplink component carrier. Also, PUCCH resources are set in the PUCCH serving cell (primary cell, PUCCH secondary cell).

Also, the non-PUCCH serving cell (non-PUCCH secondary cell) may have only downlink component carriers. Moreover, a non-PUCCH serving cell (non-PUCCH secondary cell) may have a downlink component carrier and an uplink component carrier.

The terminal device 1 may perform transmission on the PUCCH in the PUCCH serving cell. That is, the terminal device 1 may perform transmission on the PUCCH in the primary cell. Moreover, the terminal device 1 may perform transmission by PUCCH in a PUCCH secondary cell. That is, the terminal device 1 does not perform transmission on the PUCCH in the non-special secondary cell.

Here, the PUCCH secondary cell may be defined as a primary cell and a serving cell that is not a secondary cell.

Here, the base station apparatus 3 may set one or a plurality of serving cells using a higher layer signal. For example, one or more secondary cells may be configured to form a set of multiple serving cells with the primary cell. Here, the serving cell set by the base station device 3 may include a PUCCH secondary cell.

That is, the PUCCH secondary cell may be set by the base station device 3. For example, the base station apparatus 3 may transmit an upper layer signal including information (index) used for setting a PUCCH secondary cell.

2A to 2C are diagrams for explaining the cell group in the present embodiment. 2A to 2C show three examples (Example 1, Example 2, and Example 3) as examples of setting (configuration, definition) of the PUCCH cell group. Here, in the present embodiment, a group of one or more serving cells is referred to as a PUCCH cell group. The PUCCH cell group may be a group related to transmission on PUCCH (transmission of uplink control information on PUCCH). Here, a certain serving cell belongs to any one PUCCH cell group. Here, as a matter of course, the PUCCH cell group may be set differently from the example shown in FIGS. 2A to 2C.

Here, the PUCCH cell group may be set by the base station apparatus 3. For example, the base station apparatus 3 may transmit an upper layer signal including information (which may be an index or a cell group index) used for setting a PUCCH cell group.

Here, it is needless to say that the present embodiment is applicable to a group of one or a plurality of serving cells different from the PUCCH cell group described above. For example, the base station apparatus 3 may set one or a plurality of serving cell groups in association with the serving cell indicated using the carrier indicator field (CIF). As will be described later, for example, the base station device 3 may set a timing advance group including one or a plurality of serving cells.

That is, the base station apparatus 3 may set one or a plurality of serving cell groups in association with uplink transmission. Further, the base station apparatus 3 may set one or a plurality of serving cell groups in association with downlink transmission.

Hereinafter, a group of one or a plurality of serving cells set by the base station apparatus 3 is also referred to as a cell group. That is, the PUCCH cell group may be included in the cell group. Further, the timing advance group may be included in the cell group. Here, the base station apparatus 3 and / or the terminal apparatus 1 may execute the operations described in the present embodiment for each cell group. That is, the base station device 3 and / or the terminal device 1 may execute the operation described in this embodiment in one cell group.

Also, for example, the base station device 3 and / or the terminal device 1 may support carrier aggregation of up to 32 downlink component carriers (downlink cells, up to 32 downlink component carriers). That is, the base station device 3 and / or the terminal device 1 can simultaneously perform transmission and / or reception on a plurality of physical channels in up to 32 serving cells. That is, the base station apparatus 3 may set up to 32 serving cells for the terminal apparatus 1. Here, the number of uplink component carriers may be smaller than the number of downlink component carriers.

Also, for example, the base station device 3 and / or the terminal device 1 may support carrier aggregation of up to 5 downlink component carriers (up to 5 downlink component carriers). That is, the base station device 3 and / or the terminal device 1 can simultaneously perform transmission and / or reception on a plurality of physical channels in up to five serving cells. That is, the base station apparatus 3 may set up to 5 serving cells for the terminal apparatus 1. Here, the number of uplink component carriers may be smaller than the number of downlink component carriers.

FIG. 2A shows that a first cell group and a second cell group are set as cell groups (here, PUCCH cell groups). For example, in FIG. 2A, the base station apparatus 3 may transmit a downlink signal in the first cell group. Moreover, the terminal device 3 may transmit an uplink signal in the first cell group (may transmit uplink control information on the PUCCH in the first cell group).

For example, when 20 serving cells (downlink component carrier, downlink cell) are set or activated in the first cell group, the base station device 3 and the terminal device 1 correspond to the 20 downlink component carriers. Uplink control information may be transmitted and received.

That is, the terminal device 1 may transmit HARQ-ACK (HARQ-ACK for transmission on PDSCH, HARQ-ACK for transport block) corresponding to 20 downlink component carriers. Moreover, the terminal device 1 may transmit CSI corresponding to 20 downlink component carriers. Moreover, the terminal device 1 may transmit SR for every cell group. Similarly, the base station apparatus 3 and the terminal apparatus 1 may transmit / receive uplink control information in the second cell group.

Similarly, the base station device 3 and the terminal device 1 may set a cell group as shown in FIG. 2B and transmit / receive uplink control information. Moreover, the base station apparatus 3 and the terminal device 1 may set a cell group as shown in FIG. 2C, and may transmit / receive uplink control information.

Here, one cell group (for example, PUCCH cell group) may include at least one serving cell (for example, PUCCH serving cell). In addition, one cell group (for example, PUCCH cell group) may include only one serving cell (for example, only PUCCH serving cell). Also, for example, one PUCCH cell group may include one PUCCH serving cell and one or more non-PUCCH serving cells.

Here, a cell group including a primary cell is referred to as a primary cell group. A cell group that does not include a primary cell is referred to as a secondary cell group. Further, the PUCCH cell group including the primary cell is referred to as a primary PUCCH cell group. A PUCCH cell group that does not include a primary cell is referred to as a secondary PUCCH cell group.

That is, the secondary PUCCH cell group may include a PUCCH secondary cell. For example, the index for the primary PUCCH cell group may always be defined as 0. Moreover, the index with respect to a secondary PUCCH cell group may be set by the base station apparatus 3 (a network apparatus may be sufficient).

Here, the base station apparatus 3 may transmit the information used for indicating the PUCCH secondary cell by including it in the higher layer signal and / or PDCCH (downlink control information transmitted on the PDCCH). Good. The terminal device 1 may determine the PUCCH secondary cell based on information used to indicate the PUCCH secondary cell. Here, the cell index of the PUCCH secondary cell may be defined in advance by a specification or the like.

As described above, the PUCCH in the PUCCH serving cell includes uplink control information (HARQ-ACK, CSI (eg, periodic CSI)) for the serving cell (PUCCH serving cell, non-PUCCH serving cell) included in the PUCCH cell group to which the PUCCH serving cell belongs. And / or SR) may be used.

That is, uplink control information (HARQ-ACK, CSI (eg, periodic CSI) and / or SR) for the serving cell (PUCCH serving cell, non-PUCCH serving cell) included in the PUCCH cell group is included in the PUCCH cell group. Transmitted using the PUCCH in the serving PUCCH serving cell.

Here, the present embodiment may be applied only to the transmission of HARQ-ACK. Further, the present embodiment may be applied only to transmission of CSI (for example, periodic CSI). Further, the present embodiment may be applied only to SR transmission. Further, the present embodiment may be applied to HARQ-ACK transmission, CSI (for example, periodic CSI) transmission, and / or SR transmission.

That is, a cell group (may be a PUCCH cell group) for transmission of HARQ-ACK may be set. In addition, a cell group (may be a PUCCH cell group) for transmission of CSI (for example, periodic CSI) may be set. In addition, a cell group (may be a PUCCH cell group) for SR transmission may be set.

For example, a cell group for HARQ-ACK transmission, a cell group for CSI (for example, periodic CSI) transmission, and / or a cell group for SR transmission may be individually set. Further, a common cell group may be set as a cell group for HARQ-ACK transmission, a cell group for CSI (for example, periodic CSI) transmission, and / or a cell group for SR transmission.

Here, the number of cell groups for HARQ-ACK transmission may be one or two. The number of cell groups for CSI transmission may be one or two. The number of cell groups for transmission of SR may be one or two. Further, the cell group for transmission of CSI (for example, periodic CSI) and / or the cell group for transmission of SR may not be set (defined).

Hereinafter, MTA (Multiple Timing Advance) in the present embodiment will be described.

For example, the base station apparatus 3 may set a plurality of timing advance groups for the terminal apparatus 1 that supports MTA. The timing advance group may include one or more serving cells. Here, the timing advance group including the primary cell is referred to as a primary timing advance group. A timing advance group that does not include a primary cell is referred to as a secondary timing advance group.

That is, the secondary timing advance group may include only one or a plurality of secondary cells. Here, the PUCCH secondary cell may be included in either the primary timing advance group or the secondary timing advance group.

Also, the terminal device 1 may individually control the uplink transmission timing in the primary timing advance group and the uplink transmission timing in the secondary timing advance group. For example, the terminal device 1 uses the uplink transmission timing for PUCCH, PUSCH, and / or SRS in the primary timing advance group, and the uplink transmission for PUCCH, PUSCH, and / or SRS in the secondary timing advance group. Timing may be individually controlled. Hereinafter, the uplink transmission timing may be an uplink transmission timing for PUCCH, PUSCH, and / or SRS.

Here, the uplink transmission timing in the secondary cell belonging to the primary timing advance group may be the same as the uplink transmission timing in the primary cell. That is, when the terminal device 1 receives the timing advance command for the primary cell from the base station device 3, the terminal device 1 refers to the timing advance command for the primary cell, and thereby the uplink in the secondary cell belonging to the primary cell and / or the primary timing advance group. The link transmission timing may be adjusted.

In addition, when the terminal device 1 receives a timing advance command for the secondary timing advance group from the base station device 3, the terminal device 1 refers to the timing advance command for the secondary timing advance group, so that the secondary cells belonging to the secondary timing advance group (all The uplink transmission timing in the secondary cell may be adjusted. Here, the uplink transmission timing may be the same for all secondary cells belonging to the secondary timing advance group.

Hereinafter, the configuration of the slot in this embodiment will be described.

FIG. 3 is a diagram showing a configuration of slots in the present embodiment. In FIG. 3, the horizontal axis represents the time axis, and the vertical axis represents the frequency axis. Here, normal CP (normal Cyclic Prefix) may be applied to the OFDM symbol. Further, an extended CP (extended Cyclic Prefix) may be applied to the OFDM symbol. A physical signal or physical channel transmitted in each slot is represented by a resource grid.

Here, in the downlink, the resource grid may be defined by a plurality of subcarriers and a plurality of OFDM symbols. In the uplink, a resource grid may be defined by a plurality of subcarriers and a plurality of SC-FDMA symbols. Further, the number of subcarriers constituting one slot may depend on the cell bandwidth. The number of OFDM symbols or SC-FDMA symbols constituting one slot may be seven. Here, each of the elements in the resource grid is referred to as a resource element. Also, the resource element may be identified using a subcarrier number and an OFDM symbol or SC-FDMA symbol number.

Here, the resource block may be used to express a mapping of a certain physical channel (such as PDSCH or PUSCH) to a resource element. In addition, virtual resource blocks and physical resource blocks may be defined as resource blocks. A physical channel may first be mapped to a virtual resource block. Thereafter, the virtual resource block may be mapped to a physical resource block. One physical resource block may be defined from 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 may be composed of (7 × 12) resource elements. One physical resource block may correspond to one slot in the time domain and 180 kHz in the frequency domain. Also, physical resource blocks may be numbered from 0 in the frequency domain.

Hereinafter, the CRC parity bits added to the DCI format (DCI: may be downlink control information) will be described in detail. In this embodiment, “CRC parity bit”, “CRC bit”, and “CRC” may be the same.

For example, the number of CRC parity bits added to the corresponding DCI format may be 24 or 16. That is, the base station apparatus 3 and the terminal apparatus 1 select whether the number of CRC parity bits added to the corresponding DCI format is 24 or 16 according to one or more conditions ( Determination, judgment). That is, the base station apparatus 3 uses the DCI to which the first CRC parity bit (for example, the CRC parity bit having 24 numbers) or the second CRC parity bit (for example, the CRC parity bit having 16 numbers) is added. A format may be sent. The terminal device 1 may monitor the DCI format to which the first CRC parity bit or the second CRC parity bit is added. Here, as described above, the DCI format may be transmitted on the PDCCH.

For example, the base station apparatus 3 uses higher layer parameters (for example, RRC layer parameters) used for the terminal apparatus 1 to set (may be instructed or defined) to monitor a PDCCH including 24-bit CRC parity bits. May be sent. Also, the base station apparatus 3 sets (may be instructed or defined) in the terminal apparatus 1 whether to monitor a PDCCH including a CRC parity bit of 24 bits or to monitor a PDCCH including a CRC parity bit of 16 bits. The higher layer parameters used for this purpose may be transmitted. In this embodiment, the “upper layer parameter”, “upper layer message”, “upper layer signal”, “upper layer information”, and “upper layer information element” are the same. It may be.

That is, the base station apparatus 3 may transmit information (parameters) related to DCI monitoring to which the first CRC parity bit is added to the terminal apparatus 1. Further, the base station apparatus 3 may transmit information (parameters) related to DCI monitoring to which the second CRC parity bit is added to the terminal apparatus 1. Hereinafter, the information (parameter) related to the DCI monitor to which the first CRC parity bit is added and / or the information (parameter) related to the DCI monitor to which the second CRC parity bit is added are simply monitored by the DCI. Also described as a parameter.

Here, in the present embodiment, “PDCCH that transmits a DCI format with a CRC parity bit added”, “PDCCH that includes a CRC parity bit and includes a DCI format”, “PDCCH that includes a CRC parity bit”, and , “PDCCH including DCI format” may be the same. In the present embodiment, “PDCCH including X” and “PDCCH with X” may be the same. That is, the terminal device 1 may monitor the DCI format. The terminal device 1 may monitor DCI. Moreover, the terminal device 1 may monitor PDCCH.

For example, parameters related to DCI monitoring may be set for each serving cell. Also, parameters related to DCI monitoring may be set for each cell group. Moreover, the parameter regarding the monitor of DCI may be set only with respect to a secondary cell. Also, the parameters related to DCI monitoring may be set only for a group of serving cells that do not include a primary cell.

For example, when the terminal device 1 in which the first serving cell and the second serving cell are set has parameters related to DCI monitoring set in the first serving cell, the PDCCH (DCI, DCI in the first serving cell is set. May be monitored) based on DCI monitoring parameters. Here, the PDCCH (which may be DCI or DCI format) in the first serving cell may be used for scheduling of the PDSCH in the first serving cell and / or the second serving cell. Also, the PDCCH (which may be DCI or DCI format) in the first serving cell may be used for PUSCH scheduling in the first serving cell and / or the second serving cell.

Here, the base station apparatus 3 transmits a higher layer parameter (for example, an RRC layer parameter) used to instruct that the PDSCH and / or PUSCH is scheduled using the PDCCH in any serving. May be. That is, the base station apparatus 3 may transmit information used to instruct in which serving cell a downlink assignment (also referred to as downlink allocation) is signaled. Moreover, the base station apparatus 3 may transmit the information used for instruct | indicating which uplink grant (uplink | grant | grant) is signaled in which serving cell.

Also, the parameters related to DCI monitoring may be applied only to USS. That is, the parameters related to the DCI monitor may not be applied to the DCI monitor in the CSS, but may be applied only to the DCI monitor in the USS. Also, the parameters related to DCI monitoring may be applied to only one of PDCCH and EPDCCH.

In addition, when the predetermined condition is satisfied, the terminal device 1 may monitor the PDCCH including 24-bit CRC parity bits. That is, the terminal device 1 is related to an upper layer parameter (which may be set based on a parameter related to DCI monitoring or a parameter related to DCI monitoring) instructing the terminal device 1 to monitor a PDCCH including 24 CRC parity bits. If the predetermined condition is satisfied, the PDCCH including 24 CRC CRC bits may be monitored.

Here, when the predetermined condition is satisfied, the terminal device 1 may monitor the PDCCH including 24-bit CRC parity bits in the secondary cell. Further, when a predetermined condition is satisfied, the terminal device 1 may monitor a PDCCH including 24-bit CRC parity bits in a secondary cell belonging to a serving cell group that does not include a primary cell. Moreover, the terminal device 1 may monitor PDCCH including a CRC parity bit of 24 bits in USS (only USS may be used) when a predetermined condition is satisfied. Moreover, the terminal device 1 may monitor EPDCCH (only EPDCCH) including a 24-bit CRC parity bit when a predetermined condition is satisfied.

For example, when the terminal device 1 is configured with a larger number of serving cells (for example, more than 5 serving cells) using higher layer parameters (for example, RRC layer parameters), the terminal device 1 May monitor PDCCH including 24-bit CRC parity bits (may be determined to be monitored). That is, when the terminal apparatus 1 is configured with a predetermined number or less of serving cells (for example, 5 or less serving cells) using higher-layer parameters (for example, RRC layer parameters), the terminal apparatus 1 The PDCCH including the CRC parity bits of 24 bits or the PDCCH including the CRC parity bits of 16 bits may be monitored based on the setting based on the parameters regarding the monitoring of the above.

Also, the number of PDCCH candidates monitored by the terminal device 1 in a certain subframe and / or the size of the DCI format monitored by the terminal device 1 in the certain subframe (the payload size of the DCI format, the payload size of the DCI format) The terminal device 1 may monitor the PDCCH including the CRC parity bits of 24 bits (may be determined to be monitored).

For example, when the product of the number of PDCCH candidates monitored by the terminal device 1 in a certain subframe and the size of the DCI format monitored by the terminal device 1 in the certain subframe is larger than a predetermined value, The terminal device 1 may monitor the PDCCH including 24-bit CRC parity bits (may be determined to be monitored).

Hereinafter, “the terminal apparatus 1 is instructed to monitor the PDCCH including the CRC parity bits of 24 bits (for example, the RRC layer parameter) and / or the terminal based on the predetermined condition as described above. “The device 1 monitors the PDCCH including the CRC parity bits of 24 bits” is simply described as “the terminal device 1 is set to monitor the PDCCH including the CRC parity bits of 24 bits”.

Hereinafter, “the terminal apparatus 1 is instructed to monitor the PDCCH including the CRC parity bits of 24 bits (for example, the RRC layer parameter) and / or the terminal based on the predetermined condition as described above. “The device 1 does not monitor PDCCH including 24-bit CRC parity bits” is also described as “the terminal device 1 is not set to monitor PDCCH including 24-bit CRC parity bits”.

Here, when at least one of the following conditions (a) to (d) is satisfied, the number of CRC parity bits added to the corresponding DCI format may be 16. That is, when at least one of the following conditions (a) to (d) is satisfied, the base station apparatus 3 may transmit DCI to which 16 CRC parity bits are added. Further, when at least one of the following conditions (a) to (d) is satisfied, the terminal device 1 may monitor DCI to which 16 CRC parity bits are added. That is, when at least one of the following conditions (a) to (d) is satisfied, the terminal device 1 may monitor the PDCCH including 16 CRC parity bits.

Condition (a): The terminal apparatus 1 is not set using a higher layer parameter (for example, an RRC layer parameter) to monitor a PDCCH including 24 CRC CRC bits. Condition (b): Corresponding DCI format is mapped to CSS (sent in CSS)
Condition (c): The corresponding DCI format is mapped to at least the USS given by the Temporary C-RNTI (at least sent in the USS given by the Temporary C-RNTI)
Condition (d): CRC parity bits added to the corresponding DCI format are scrambled by a predetermined RNTI

That is, for example, when the terminal device 1 is not set using upper layer parameters (which may be RRC layer parameters or DCI monitoring parameters) to monitor a PDCCH including 24-bit CRC parity bits, The number of CRC parity bits added to the corresponding DCI format may be 16.

Also, for example, when the corresponding DCI format is mapped to CSS, the number of CRC parity bits added to the corresponding DCI format may be 16. That is, when transmitting the DCI format in CSS, the base station apparatus 3 may transmit the DCI format with a 16-bit CRC parity bit added. Further, when receiving the DCI format in CSS, the terminal device 1 may receive the DCI format to which a 16-bit CRC parity bit is added.

That is, when the corresponding DCI format is mapped to the USS, the number of CRC parity bits added to the corresponding DCI format may be 16 or 24.

That is, when the base station apparatus 3 is set for the terminal apparatus 1 to monitor PDCCH (which may be a DCI format) including 24-bit CRC parity bits and transmits the DCI format in USS, The DCI format may be transmitted with a 24-bit CRC parity bit added. In addition, the terminal device 1 is configured to monitor a PDCCH (which may be a DCI format) including a CRC parity bit of 24 bits, and when the DCI format is received in the USS, the terminal device 1 has a 24-bit CRC. You may receive the DCI format to which the parity bit was added.

Also, the base station apparatus 3 is not set for the terminal apparatus 1 to monitor the PDCCH (which may be a DCI format) including 24-bit CRC parity bits, and the DCI format is transmitted in the USS. Alternatively, 16-bit CRC parity bits may be added to the DCI format for transmission. Further, the terminal device 1 is not set to monitor the PDCCH (which may be in the DCI format) including the CRC parity bits of 24 bits, and when the terminal device 1 receives the DCI format in the USS, 24 A DCI format to which a CRC parity bit of bits is added may be received.

Also, for example, when the corresponding DCI format is mapped to at least the USS given by the Temporary C-RNTI, the number of CRC parity bits added to the corresponding DCI format may be 16. That is, when transmitting the DCI format at least in the USS given by the Temporary C-RNTI, the base station apparatus 3 may transmit the DCI format with a 16-bit CRC parity bit added. Further, when the terminal device 1 receives the DCI format at least in the USS given by the Temporary C-RNTI, the terminal device 1 may receive the DCI format to which 16 CRC parity bits are added.

That is, when the corresponding DCI format is mapped to at least the USS provided by the C-RNTI, the number of CRC parity bits added to the corresponding DCI format may be 16 or 24.

That is, the base station apparatus 3 sets the terminal apparatus 1 to monitor a PDCCH (which may be a DCI format) including 24 CRC parity bits, and gives the DCI format at least by C-RNTI. In the case of transmission in the USS, a CRC parity bit of 24 bits may be added to the DCI format for transmission. Also, the terminal device 1 is set so that the terminal device 1 monitors a PDCCH (which may be a DCI format) including 24 CRC parity bits, and receives the DCI format at least in the USS provided by the C-RNTI. In this case, a DCI format to which 24-bit CRC parity bits are added may be received.

That is, when the base station apparatus 3 is set for the terminal apparatus 1 to monitor a PDCCH (which may be in a DCI format) including 24-bit CRC parity bits, at least a 24-bit USS given by the C-RNTI is used. The DCI to which the CRC parity bit is added may be transmitted, and the DCI to which the CRC parity bit of 16 bits is added in the CSS may be transmitted.

Further, when the base station apparatus 3 is not set for the terminal apparatus 1 to monitor the PDCCH (which may be in the DCI format) including 24 CRC parity bits, at least 16 in the USS given by the C-RNTI. The DCI to which the CRC parity bit of the bit is added may be transmitted, and the DCI to which the CRC parity bit of 16 bits is added in the CSS may be transmitted.

Further, when the terminal device 1 is set to monitor a PDCCH (which may be in a DCI format) including a 24-bit CRC parity bit, at least a 24-bit CRC parity bit is added in the USS given by the C-RNTI. The DCI may be monitored, and the DCI to which a CRC parity bit of 16 bits is added in the CSS may be monitored.

In addition, when the terminal device 1 is not set to monitor a PDCCH (which may be a DCI format) including 24-bit CRC parity bits, at least a 16-bit CRC parity bit is added in the USS given by the C-RNTI. It is also possible to monitor the DCI added with 16 CRC parity bits in the CSS.

Also, the base station apparatus 3 is provided by at least Temporary C-RNTI regardless of whether or not the terminal apparatus 1 is set to monitor a PDCCH (which may be a DCI format) including 24-bit CRC parity bits. In USS, DCI to which a CRC parity bit of 16 bits is added may be transmitted.

Also, regardless of whether or not the terminal device 1 is set to monitor a PDCCH (which may be a DCI format) including 24 CRC parity bits, at least a 16-bit CRC in the USS given by the Temporary C-RNTI You may monitor DCI to which the parity bit was added.

Here, for example, when CRC parity bits added to the corresponding DCI format are scrambled by a predetermined RNTI, the number of CRC parity bits added to the corresponding DCI format may be 16. . Here, the predetermined RNTI may not include the C-RNTI. The predetermined RNTI may not include the SPS C-RNTI. The predetermined RNTI may include a Temporary C-RNTI. Further, the predetermined RNTI may include RA-RNTI (Random Access Radio Network Temporary Identifier).

That is, the base station apparatus 3 is scrambled by the RA-RNTI regardless of whether or not the terminal apparatus 1 is set to monitor a PDCCH (which may be a DCI format) including 24 CRC parity bits. DCI to which a CRC parity bit of bits is added may be transmitted.

Also, the terminal device 1 has a 16-bit CRC parity bit scrambled by the RA-RNTI regardless of whether it is set to monitor a PDCCH (which may be a DCI format) including a 24-bit CRC parity bit. The added DCI may be monitored.

Here, the DCI to which the CRC parity bit scrambled by the RA-RNTI is added may be transmitted only in the CSS. That is, the DCI scrambled by the RA-RNTI and added with 16 CRC parity bits may be transmitted only in the CSS.

Also, the 24-bit CRC parity bits may be scrambled by C-RNTI. Further, the 16-bit CRC parity bits may be scrambled by C-RNTI or Temporary C-RNTI.

That is, when not all of the conditions (a) to (d) are satisfied, the number of CRC parity bits added to the corresponding DCI format may be 24. For example, (1) the terminal apparatus 1 is set using a higher layer parameter (for example, an RRC layer parameter) to monitor a PDCCH including 24 CRC parity bits, and (2) the corresponding DCI The format is mapped to at least the USS given by C-RNTI, and (3) CRC parity bits added to the corresponding DCI format are scrambled by a RNTI other than a given RNTI (eg, C-RNTI) 24, the number of CRC parity bits added to the corresponding DCI format may be 24.

Here, of course, all or part of the conditions (a) to (d) may be used in the above-described processing. In the above-described processing, it is needless to say that conditions other than the conditions (a) to (d) may be used.

Hereinafter, a method when the CRC parity bit is scrambled by RNTI will be described in detail. In the present embodiment, an RNTI having a 16-bit number is described, but it goes without saying that the RNTI may have a number other than 16 bits. Here, the process in which the CRC parity bit is scrambled by the RNTI may be executed by the base station apparatus 3. That is, when performing the CRC parity check, the terminal device 1 may consider that the CRC parity bit is scrambled by the RNTI.

That is, error detection may be provided based on a bit sequence provided by CRC CRC bits being scrambled by RNTI. Also, error detection may be performed based on a bit sequence given by scrambling CRC parity bits with RNTI.

Here, in this embodiment, the “16 CRC parity bits” is also referred to as “16-bit CRC”, “16-bit CRC”, or “16-bit CRC parity bit”. In the present embodiment, “a CRC parity bit of 24 numbers” is also referred to as “24-bit CRC”, “24-bit CRC”, or “24-bit CRC parity bit”.

FIG. 4 is a diagram for explaining the addition of CRC parity bits in the present embodiment. As described above, the CRC parity bit may be added to the DCI format (DCI: may be downlink control information). Also, the CRC parity bit may be scrambled by RNTI after being added to the DCI format.

In FIG. 4, a _i may be a DCI bit (DCI payload) corresponding to a CRC parity bit. Further, A may be the number of DCI bits (DCI payload size) corresponding to CRC parity bits. P _i is a CRC parity bit. L may be the number of CRC parity bits. The bit sequence _{<b 0, ..., b B} -1> is, DCI (DCI payload) <a ₀ ,...,a _A-1> the CRC parity bits _{<p 0, ...,} is _{p L-1>} It may be given by being added. Hereinafter, in the description of FIGS. 5 to 8, the symbols are used in the same meaning.

FIG. 5 is a diagram for explaining scrambling of CRC parity bits by RNTI in the present embodiment. As shown in FIG. 5, the bit sequence _{<c 0, ..., c B} -1> (B = A + L) , the bit sequence _{<b 0, ..., b A} -1, b A, ..., b A + 15> Of some of the _{<b a, ..., b a} + 15> _{is, RNTI <x rnti, 0,} ..., x rnti, 15> may be provided by being scrambled by. That is, the bit sequences _{<b 0, ..., b A} + L-1> (L = 16) CRC parity bits of the _{<b A, ..., b A} + L-1> is _{(L = 16), RNTI <} x rnti, 0 , _..., by being scrambled by _{x RNTI, 15>,} the bit sequence _{<c 0, ..., c A} + L-1> is given, may be transmitted and received PDCCH.

Here, the bit sequence _{<b 0, ..., b A} -1, b A, ..., b A + 15> , the payload of the DCI <a ₀ ,...,a _A-1> in 16-bit CRC <p _0, ..., It may be given by appending p _L-1 >. That is, the bit sequence <b ₀ ,..., B _A-1 > may be DCI (DCI payload), and the bit sequence <b _A ,..., B _{A + 15} > may be a 16-bit CRC. That is, the 16-bit CRC <b _A ,..., B _{A + 15} > may be scrambled by RNTI <x _{rnti, 0} , ..., x _{rnti, 15} >.

That is, when L (number of CRC parity bits) is 16, the bit sequence <c ₀ ,..., C _{A + L−1} > may be given by Equation 1 below.

FIG. 6 is another diagram for explaining the scrambling of CRC parity bits by the RNTI in this embodiment. As shown in FIG. 6, bit sequence _{<c 0, ..., c B} -1> (B = A + L) , the bit sequence _{<b 0, ..., b A} -1, b A, ..., b A + 23> Of some of the _{<b a + 8, ...,} b a + 23> _{is, RNTI <x rnti, 0,} ..., x rnti, 15> may be provided by being scrambled by. That is, the bit sequence <b _{A + 8} ,... Among the CRC parity bits <b _A ,..., B _{A + L−1} > (L = 23) in the bit sequence <b ₀ ,..., B _{A + L−1} > (L = 23). , b _{A + L−1} > (L = 23) is scrambled by RNTI <x _{rnti, 0} ,..., x _{rnti, 15} > to give the bit sequence <c ₀ ,..., c _{A + L−1} >. And may be transmitted / received on the PDCCH.

Here, the bit sequence _{<b 0, ..., b A} -1, b A, ..., b A + 23> , the payload of the DCI <a ₀ ,...,a _A-1> 24-bit CRC <p _0, ..., It may be given by appending p _L-1 >. That is, the bit sequence <b ₀ ,..., B _A-1 > may be DCI (DCI payload), and the bit sequence <b _A ,..., B _{A + 23} > may be a 24-bit CRC. That is, the bit sequence <b _{A + 8} ,..., B _{A + 23} > of the 24-bit CRC <b _A ,..., B _{A + 23} > may be scrambled by RNTI <x _{rnti, 0} , ..., x _{rnti, 15} >. . That is, the bit sequence <b _A ,..., B _{A + 7} > in the 24-bit CRC <b _A ,..., B _{A + 23} > may not be scrambled by RNTI <x _{rnti, 0} , ..., x _{rnti, 15} >. Good.

That is, when L (number of CRC parity bits) is 24, the bit sequence <c ₀ ,..., C _{A + L−1} > may be given by Equation 2 below.

FIG. 7 is another diagram for explaining the scrambling of CRC parity bits by the RNTI in this embodiment. Here, the bit sequence <c ₀ ,..., C _B−1 > (B = A + L) may be given by a process as shown in FIG. 7, and may be transmitted / received on the PDCCH.

That is, the bit sequences _{<b 0, ..., b A} -1, b A, ..., b A + 23> part of the _{<b A + 8, ...,} b A + 23> _{is, RNTI <x rnti, 0,} ..., It may be scrambled by x _{rnti, 15} >. That is, the bit sequence <b _{A + 8} ,... Among the CRC parity bits <b _A ,..., B _{A + L−1} > (L = 23) in the bit sequence <b ₀ ,..., B _{A + L−1} > (L = 23). , b _{A + L−1} > (L = 23) may be scrambled by RNTI <x _{rnti, 0} ,..., x _{rnti, 15} >.

Here, the bit sequence _{<b 0, ..., b A} -1, b A, ..., b A + 23> , the payload of the DCI <a ₀ ,...,a _A-1> 24-bit CRC <p _0, ..., It may be given by appending p _L-1 >. That is, the bit sequence <b ₀ ,..., B _A-1 > may be DCI (DCI payload), and the bit sequence <b _A ,..., B _{A + 23} > may be a 24-bit CRC. That is, the bit sequence <b _{A + 8} ,..., B _{A + 23} > of the 24-bit CRC <b _A ,..., B _{A + 23} > may be scrambled by RNTI <x _{rnti, 0} , ..., x _{rnti, 15} >. .

Also, 24-bit _{CRC <b A, ..., b} A + 23> bit sequence of the _{<b A, ..., b A} + 7> _{is, RNTI <x rnti, 0,} ..., x rnti, 15> bit sequence of the < may be scrambled by x _{rnti, 8} ,..., x _{rnti, 15} >. That is, 24-bit _{CRC <b A, ..., b} A + 23> bit sequence of the _{<b A, ..., b A} + 7> _{is, RNTI <x rnti, 0,} ..., x rnti, 15> part of the < may be scrambled by x _{rnti, 8} ,..., x _{rnti, 15} >.

That is, when L (number of CRC parity bits) is 24, the bit sequence <c ₀ ,..., C _{A + L−1} > may be given by Equation 3 below.

FIG. 8 is another diagram for explaining the scrambling of CRC parity bits by the RNTI in this embodiment. Here, the bit sequence <c ₀ ,..., C _B−1 > (B = A + L) may be given by processing as shown in FIG. 8 and may be transmitted / received on the PDCCH.

That is, the bit sequences _{<b 0, ..., b A} -1, b A, ..., b A + 23> part of the _{<b A + 8, ...,} b A + 23> _{is, RNTI <x rnti, 0,} ..., It may be scrambled by x _{rnti, 15} >. That is, the bit sequence <b _{A + 8} ,... Among the CRC parity bits <b _A ,..., B _{A + L−1} > (L = 23) in the bit sequence <b ₀ ,..., B _{A + L−1} > (L = 23). , b _{A + L−1} > (L = 23) may be scrambled by RNTI <x _{rnti, 0} ,..., x _{rnti, 15} >.

Here, the bit sequence _{<b 0, ..., b A} -1, b A, ..., b A + 23> , the payload of the DCI <a ₀ ,...,a _A-1> 24-bit CRC <p _0, ..., It may be given by appending p _L-1 >. That is, the bit sequence <b ₀ ,..., B _A-1 > may be DCI (DCI payload), and the bit sequence <b _A ,..., B _{A + 23} > may be a 24-bit CRC. That is, the bit sequence <b _{A + 8} ,..., B _{A + 23} > of the 24-bit CRC <b _A ,..., B _{A + 23} > may be scrambled by RNTI <x _{rnti, 0} , ..., x _{rnti, 15} >. .

Also, the bit sequence <b _A ,..., B _{A + 7} > in the 24-bit CRC <b _A ,..., B _{A + 23} > is the bit sequence <RNTI <x _{rnti, 0} ,..., X _{rnti, 15} >< _{x rnti, 8, ..., x} rnti, 15>, _{and, RNTI <x rnti, 0,} ..., x rnti, 15 bit sequence _{<x RNTI,} 0 of>, _..., are scrambled by _{x RNTI, 7>} May be. That is, 24-bit _{CRC <b A, ..., b} A + 23> bit sequence of the _{<b A, ..., b A} + 7> _{is, RNTI <x rnti, 0,} ..., x rnti, 15> part of the < x _{rnti, 8} , ..., x _{rnti, 15} > and scrambled by the remaining <x _{rnti, 0} , ..., x _{rnti, 7} > of RNTI <x _{rnti, 0} , ..., x _{rnti, 15} > Also good.

That is, when L (number of CRC parity bits) is 24, the bit sequence <c ₀ ,..., C _{A + L−1} > may be given by Equation 4 below.

As described above, by increasing the number of CRC parity bits scrambled by the RNTI, the terminal device 1 transmits the PDCCH including the CRC parity bits scrambled by the RNTI for the other terminal device 1 to the terminal device 1. The probability of erroneously determining that the PDCCH includes CRC parity bits that are scrambled by RNTI can be reduced.

Here, increasing the number of CRC parity bits causes a decrease in the coding rate for transmission on the PDCCH and / or an increase in the amount of resources required for transmission on the PDCCH. Therefore, as described above, the base station apparatus 3 and the terminal apparatus 1 are switched by switching the number of CRC parity bits added to the corresponding DCI format (DCI: may be downlink control information) according to a predetermined condition. It becomes possible to communicate efficiently.

FIG. 9 is a diagram for explaining downlink control information to which CRC parity bits are added in the present embodiment. The downlink control information shown in the upper part of FIG. 9 indicates downlink control information to which a 24-bit CRC is added. Also, the downlink control information shown in the lower part of FIG. 9 indicates downlink control information to which a 16-bit CRC is added.

In FIG. 9, a bit sequence <b ₀ ,..., B _A-1 > indicates DCI (downlink control information) for the first terminal apparatus 1. Further, the bit sequence <b _A ,..., B _{A + 23} > indicates a 24-bit CRC. Further, the bit sequence <x _{rnti, 0} ,..., X _{rnti, 15} > indicates the RNTI assigned to the first terminal apparatus 1.

Further, the bit sequence <b ′ _{0 ′} ,..., B ′ _A′−1 > indicates downlink control information for the second terminal apparatus 1. Further, the bit sequence <b ′ _{A ′} ,..., B ′ _{A ′ + 15} > indicates a 16-bit CRC. Further, the bit sequence <x ′ _{rnti, 0} ,..., X ′ _{rnti, 15} > indicates the RNTI assigned to the second terminal apparatus 1.

Here, 24-bit _{CRC <b A, ..., b} A + 23> bit sequence of the _{<b A, ..., b A} + 15> _{is, RNTI <x rnti, 0,} ..., x rnti, 15> be scrambled by Good. That is, 24-bit _{CRC <b A, ..., b} A + 23> bit sequence of the _{<b A + 16, ...,} b A + 23> _{is, RNTI <x rnti, 0,} ..., x rnti, 15> part of the < x _{rnti, 8} ,..., x _{rnti, 15} > and scrambled by the remaining <x _{rnti, 0} , ..., x _{rnti, 7} > of RNTI <x _{rnti, 0} , ..., x _{rnti, 15} > Also good.

Also, 16-bit _{CRC <b 'A', ...} , b 'A' + 15> _{is, RNTI <x 'rnti, 0} , ..., x' rnti, 15> may be scrambled by.

Here, even if an RNTI different from the RNTI for the first terminal device 1 is assigned to the second terminal device 1, the latter 16 bits of the 24-bit CRC for the first terminal device 1 <b Scrambling applied to _{A + 8} ,..., B _{A + 23} > is applied to 16-bit CRC <b ′ _{A ′} ,..., B ′ _{A ′ + 15} > for the second terminal device 1 It may be the same. In this case, the probability that the second terminal apparatus 1 detects the PDCCH addressed to the first terminal apparatus 1 as the PDCCH of the second terminal apparatus 1 increases.

For example, RNTI <1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1> is assigned to the first terminal device 1 and the second When RNTI <1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0> is assigned to the terminal device 1 of The latter 16 bits of the 24-bit CRC for the terminal device 1 and the 16-bit CRC for the second terminal device 1 both have a bit sequence <1,1,1,1,1,1,1,1,1. 0,0,0,0,0,0,0,0>.

Therefore, the base station apparatus 3 performs scrambling applied to the second half 16 bits <b _{A + 8} ,..., B _{A + 23} > of the 24-bit CRC for the first terminal apparatus 1. For each of the first terminal apparatus 1 and the second terminal apparatus 1 so as not to be the same as the scrambling applied to the 16-bit CRC <b ′ _{A ′} ,..., B ′ _{A ′ + 15} > RNTI may be assigned.

Further, as in the example shown in FIGS. 6, 7, and 8, the last 16 bits <b _{A + 8} ,..., B _{A + 23} > of the 24-bit CRC for the first terminal device 1 are the first _Are scrambled by RNTI <x _{rnti, 0} ,..., X _{rnti, 15} > assigned to the terminal device 1 of the second terminal device 1 and the first terminal device 1. When an RNTI different from the allocated RNTI is assigned, scrambling applied to the latter 16 bits <b _{A + 8} ,..., B _{A + 23} > of the 24-bit CRC for the first terminal apparatus 1, The scrambling applied to the 16-bit CRC <b ′ _{A ′} ,..., B ′ _{A ′ + 15} > for the terminal device 1 can be made different.

By executing the operation as described above, the base station device 3 and the terminal device 1 can communicate efficiently.

Hereinafter, UE transmission antenna selection in this embodiment will be described. Here, the UE transmit antenna selection may include closed loop UE transmit antenna selection and open loop UE transmit antenna selection.

For example, UE transmission antenna selection may be performed by the terminal device 1. Moreover, UE transmission antenna selection may be applied with respect to PUSCH, DMRS regarding PUSCH, and SRS. Or UE transmission antenna selection may not be applied with respect to PUCCH, DMRS regarding PUCCH, and PRACH. Here, PUCCH, DMRS related to PUCCH, and PRACH may be transmitted using the first transmission antenna port.

Also, UE transmission antenna selection may be set by the upper layer via an upper layer parameter (ue-TransmitAntennaSelection). That is, the upper layer parameter (ue-TransmitAntennaSelection) may be notified to the terminal device 1 by the base station device 3.

Here, the upper layer parameter (ue-TransmitAntennaSelection) may be used to indicate release or setup. For example, an upper layer parameter (ue-TransmitAntennaSelection) may be used to indicate to the setup whether the control of UE transmit antenna selection is closed loop or open loop. Further, when the received upper layer parameter (ue-TransmitAntennaSelection) indicates release, UE transmission antenna selection may be invalidated by the terminal device 1.

Also, when the received upper layer parameter (ue-TransmitAntennaSelection) indicates that the control of UE transmission antenna selection is closed loop, the higher layer may enable closed loop UE transmission antenna selection. Also, if the received upper layer parameter (ue-TransmitAntennaSelection) indicates that the UE transmission antenna selection control is open loop, the upper layer may enable the open loop UE transmission antenna selection. .

Here, when the UE transmission antenna selection is disabled by the terminal device 1, the terminal device 1 may transmit the uplink signal as described above using the first transmission antenna port. Good.

Further, when the open-loop UE transmission antenna selection is enabled by the upper layer, the transmission antenna (transmission antenna port) for PUSCH and / or SRS may be selected by the terminal device 1 itself.

In addition, when the closed-loop UE transmission antenna selection is enabled by the upper layer, the terminal apparatus 1 refers to the latest transmission antenna selection command (most recent command) received from the base station device 3 to determine PUSCH. A transmit antenna port for may be selected.

Here, the transmission antenna selection command may be notified by an antenna selection mask for the CRC parity bit. That is, the “transmit antenna selection command” may be the same as the “antenna selection mask”.

That is, the base station apparatus 3 notifies the terminal apparatus 1 of the transmission antenna port for PUSCH by the antenna selection mask. Moreover, the base station apparatus 3 may select an antenna selection mask and scramble the CRC parity bit with the selected antenna selection mask. For example, when closed-loop UE transmission antenna selection is enabled by the upper layer, the terminal device 1 uses the antenna selection mask selected by the base station device 3 based on the CRC parity bits scrambled by the antenna selection mask. May be specified (determined).

FIG. 10 is a diagram for explaining an antenna selection mask for 16-bit CRC in the present embodiment. In FIG. 10, 16-bit CRC <b _A ,..., B _{A + 15} > is represented by RNTI <x _{rnti, 0} , ..., x _{rnti, 15} > and antenna selection mask <x _{AS, 0} , ..., x _{AS, 15} >. It is shown to be scrambled. Here, the other descriptions in FIG. 10 are the same as those in FIG.

As shown in FIG. 10, when L (number of CRC parity bits) is 16, the bit sequence <c ₀ ,..., C _{A + L−1} > may be given by Equation 5 below.

FIG. 11 is a diagram for explaining an antenna selection mask for 24-bit CRC in the present embodiment. As shown in FIG. 11, 24-bit _{CRC <b A, ..., b} A + 23> bit sequence of the _{<b A, ..., b A} + 7> _{is, RNTI <x rnti, 0,} ..., x rnti, 15> some of the _{<x rnti, 8, ...,} x rnti, 15>, RNTI <x rnti, 0, ..., x rnti, 15> the rest of the _{<x rnti, 0, ...,} x rnti, 7> , And antenna selection mask <x _{AS, 0} ,..., X _{AS, 15} >. Here, the other description in FIG. 11 is the same as FIG.

As shown in FIG. 11, when L (number of CRC parity bits) is 24, the bit sequence <c ₀ ,..., C _{A + L−1} > may be given by Equation 6 below.

Here, as shown in FIG. 10 and FIG. 11, a first set of multiple antenna selection masks applied to a 16-bit CRC and multiple antenna selections applied to a 24-bit CRC. The second set of masks may be different. That is, as shown in FIG. 10 and FIG. 11, a first set of a plurality of antenna selection masks applied to a 16-bit CRC <x _{AS, 0} ,..., X _{AS, 15} > (ie <0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0> and <0,0,0,0,0,0,0 , ₀ , ₀ , ₀ , ₀ , ₀ , ₀ , ₀ , ₀ , 1>) and a second set of antenna selection masks applied to the 24-bit CRC <x ′ _{AS, 0} ,. x ′ _{AS, 7} > (ie, <0,0,0,0,0,0,0,0> and <0,0,0,0,0,0,0,1>) are different Also good.

For example, the first set of antenna selection masks applied to a 16-bit CRC may be a first antenna selection mask (eg, <0,0,0,0,0,0,0,0,0 , 0, 0, 0, 0, 0, 0, 0>) and a second antenna selection mask (eg, <0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 , 0, 0, 0, 0, 1>). Here, the first antenna selection mask may be used to indicate the first transmit antenna port. The second antenna selection mask may also be used to indicate the second transmit antenna port.

The second set of antenna selection masks applied to the 24-bit CRC is a third antenna selection mask (eg, <0, 0, 0, 0, 0, 0, 0, 0>). , And a fourth antenna selection mask (eg, <0, 0, 0, 0, 0, 0, 0, 1>). Here, the third antenna selection mask may be used to indicate the first transmit antenna port. The fourth antenna selection mask may also be used to indicate the second transmit antenna port.

That is, when the number of CRC parity bits (L value) is 16, the first transmission antenna port may be given by the first antenna selection mask. When the number of CRC parity bits (L value) is 24, the first transmission antenna port may be given by the third antenna selection mask. Here, the first antenna selection mask and the third antenna selection mask may be different. For example, the number of bits in the antenna selection mask may be 16 when L is 16 and may be 8 when L is 24. The values of the bits of the antenna selection mask may be different when L is 16 and L is 24.

Similarly, when the number of CRC parity bits (L value) is 16, the second transmission antenna port may be given by the second antenna selection mask. When the number of CRC parity bits (L value) is 24, the second transmission antenna port may be given by the fourth antenna selection mask. Here, the second antenna selection mask and the fourth antenna selection mask may be different. For example, the number of bits in the antenna selection mask may be 16 when L is 16 and may be 8 when L is 24. Also, the values of the bits of the antenna selection mask may be different when L is 16 and L is 24.

Here, when a plurality of serving cells are set for the terminal device 1, the terminal device 1 may receive a plurality of transmission antenna selection commands in one subframe. In this case, in this case, the base station apparatus 3 uses a plurality of transmission antenna selection commands indicating the same transmission antenna port (the same value of the transmission antenna port) in one subframe, and a terminal in which a plurality of serving cells are set. You may transmit to the apparatus 1. That is, when the terminal apparatus 1 receives a plurality of transmission antenna selection commands in one subframe, the same transmission antenna port (the same value of the transmission antenna port) is indicated using the plurality of transmission antenna selection commands. May be considered.

In addition, when closed-loop UE transmission antenna selection is enabled using higher layer parameters (for example, RRC layer parameters), the terminal device 1 refers to the counted number of SRS transmissions, A transmit antenna port for SRS may be selected. That is, the transmission antenna port for SRS transmission may be given by an SRS transmission instance (subframe for SRS transmission) set by the base station apparatus 3. Here, when a plurality of serving cells are set for the terminal device 1, the base station device 3 sets an SRS transmission instance so that the terminal device 1 does not simultaneously transmit SRS in different transmission antenna ports. Also good.

Here, when a plurality of timing advance groups are set, the terminal device 1 is configured to simultaneously transmit PUSCH and PUCCH, simultaneously transmit PUSCH and SRS, simultaneously transmit PUCCH and SRS, simultaneously transmit PRACH and SRS, and Simultaneous transmission of PRACH and PUSCH may be performed. That is, when a plurality of timing advance groups are set, the terminal device 1 simultaneously transmits PUSCH and PUCCH, simultaneously transmits PUSCH and SRS, simultaneously transmits PUCCH and SRS, simultaneously transmits PRACH and SRS, and PRACH. And PUSCH are expected to be transmitted simultaneously.

In addition, when a plurality of PUCCH cell groups are set or when transmission on the PUCCH in the secondary cell is set, the terminal device 1 may perform simultaneous transmission of PUSCH and PUCCH. Further, the terminal device 1 is expected to perform simultaneous transmission of PUSCH and PUCCH when a plurality of PUCCH cell groups are set or when transmission on the PUCCH in the secondary cell is set.

As described above, when the terminal apparatus 1 is expected to simultaneously transmit an uplink signal to which transmission antenna selection is applied and an uplink signal to which transmission antenna selection is not applied, the base station apparatus 3 The terminal device 1 may be instructed to disable transmission antenna selection via a higher layer parameter (ue-TransmitAntennaSelection).

That is, the base station apparatus 3 does not set transmission on the PUCCH in the plurality of timing advance groups, the plurality of PUCCH cell groups, and / or the secondary cell to the terminal apparatus 1 for which transmission antenna selection is set. Also good. That is, the base station apparatus 3 may not set the MTA for the terminal apparatus 1 for which the transmission antenna selection is set. Moreover, the base station apparatus 3 does not need to set a some PUCCH cell group with respect to the terminal device 1 with which transmission antenna selection was set. Moreover, the base station apparatus 3 does not need to set the transmission by PUCCH in a secondary cell with respect to the terminal device 1 with which transmission antenna selection was set.

Here, the base station apparatus 3 may set a plurality of PUCCH cell groups for the terminal apparatus 1 for which a plurality of timing advance groups are set. Moreover, the base station apparatus 3 may set the transmission by PUCCH in a secondary cell with respect to the terminal device 1 which set the several timing advance group. That is, the base station apparatus 3 may set a plurality of PUCCH cell groups for the terminal apparatus 1 for which MTA is set. Moreover, the base station apparatus 3 may set several PUCCH cell groups with respect to the terminal device 1 which set MTA.

Further, when the transmission antenna selection is set, the terminal device 1 is not expected to be set to transmit on the PUCCH in a plurality of timing advance groups, a plurality of PUCCH cell groups, and / or a secondary cell. Also good. That is, the terminal device 1 may not be expected to set the MTA when the transmission antenna selection is set. Further, the terminal device 1 may not be expected to set a plurality of PUCCH cell groups when the transmission antenna selection is set. Moreover, when the transmission antenna selection is set, the terminal device 1 may not be expected to set transmission on the PUCCH in the secondary cell.

Here, the terminal device 1 may be expected to set a plurality of PUCCH cell groups when a plurality of timing advance groups are set. Moreover, the terminal device 1 may be expected to set transmission on the PUCCH in the secondary cell when a plurality of timing advance groups are set. That is, when the MTA is set, the terminal device 1 may be expected to set a plurality of PUCCH cell groups. Further, the base station apparatus 3 may be expected to set a plurality of PUCCH cell groups when the MTA is set.

Here, the terminal apparatus 1 may transmit function information (also referred to as capability information) used to indicate whether the terminal apparatus 1 supports various functions to the base station apparatus 3. Here, the function information may indicate whether the function has been successfully tested for each of the plurality of functions. The function information may indicate whether the terminal device 1 supports a predetermined function.

For example, the function information includes (i) whether the terminal device 1 supports transmission antenna selection, (ii) whether the terminal device 1 supports MTA (Multiple Timing Advance), or (iii) a plurality of terminal devices 1 It may be used to indicate whether to support the PUCCH cell group and / or (iv) whether the terminal device 1 supports transmission on the PUCCH in the secondary cell.

For example, the function information transmitted by the terminal device 1 indicates that (i) the terminal device 1 supports transmission antenna selection, and (ii) the terminal device 1 supports MTA (Multiple Timing Advance). Even if this is the case, the base station apparatus 3 does not have to set a plurality of timing advance groups for the terminal apparatus 1 that has set the transmission antenna selection. That is, the function information transmitted by the terminal device 1 indicates that (i) the terminal device 1 supports transmission antenna selection and (ii) the terminal device 1 supports MTA (Multiple Timing Advance). Even if this is the case, the terminal device 1 in which the transmission antenna selection is set may not be expected to set a plurality of timing advance groups.

In addition, the function information transmitted by the terminal device 1 includes (i) that the terminal device 1 supports transmission antenna selection, and (ii) that the terminal device 1 supports transmission on the PUCCH in the secondary cell. Even if it is the case where it showed, the base station apparatus 3 does not need to set the transmission by PUCCH in a secondary cell with respect to the terminal device 1 which set transmission antenna selection. That is, the function information by the terminal device 1 indicates that (i) the terminal device 1 supports transmission antenna selection, and (ii) the terminal device 1 supports transmission on the PUCCH in the secondary cell. Even if it is a case, the terminal device 1 to which transmission antenna selection is set may not be expected to be set to transmit on the PUCCH in the secondary cell.

When the base station apparatus 3 and the terminal apparatus 1 perform the operations as described above, the terminal apparatus 1 uses the different transmission antenna ports to perform uplink even when UE transmission antenna selection is enabled by the upper layer. It is no longer necessary to transmit the signals simultaneously, and the configuration of an RF (Radio Frequency) unit in the terminal device 1 having the ability to perform UE transmission antenna selection can be simplified. This also enables efficient communication between the base station device 3 and the terminal device 1.

As described above, the present embodiment has been described with reference to the drawings. However, the specific configuration is not limited to the above description, and includes design changes and the like without departing from the gist of the present invention. The present embodiment also includes embodiments obtained by appropriately combining the methods / processes described above within the technical scope of the present invention.

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

FIG. 12 is a schematic block diagram showing the configuration of the terminal device 1 in the present embodiment. As shown in the figure, the terminal device 1 includes an upper layer processing unit 101, a control unit 103, a receiving unit 105, a transmitting unit 107, and a transmitting / receiving antenna unit 109. The upper layer processing unit 101 includes a radio resource control unit 1011, a scheduling information interpretation unit 1013, and a transmission power control unit 1015. The reception unit 105 includes a decoding unit 1051, a demodulation unit 1053, a demultiplexing unit 1055, a radio reception unit 1057, and a channel measurement unit 1059. The transmission unit 107 includes an encoding unit 1071, a modulation unit 1073, a multiplexing unit 1075, a radio transmission unit 1077, and an uplink reference signal generation unit 1079.

The upper layer processing unit 101 outputs uplink data (transport block) generated by a user operation or the like to the transmission unit 107. The upper layer processing unit 101 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, and radio resource control. Process the (Radio Resource Control: RRC) layer.

The radio resource control unit 1011 included in the upper layer processing unit 101 manages various setting information / parameters of the own device. The radio resource control unit 1011 sets various setting information / parameters based on the upper layer signal received from the base station apparatus 3. That is, the radio resource control unit 1011 sets various setting information / parameters based on information indicating various setting information / parameters received from the base station apparatus 3. Also, the radio resource control unit 1011 generates information arranged in each uplink channel and outputs the information to the transmission unit 107. The radio resource control unit 1011 is also referred to as a setting unit 1011.

Here, the scheduling information interpretation unit 1013 included in the upper layer processing unit 101 interprets the DCI format (scheduling information) received via the reception unit 105, and based on the interpretation result of the DCI format, the reception unit 105, Control information is generated to control the transmission unit 107 and output to the control unit 103.

The transmission power control unit 1015 included in the upper layer processing unit 101 controls transmission power for transmission on PUSCH and PUCCH based on various setting information / parameters, TPC commands, and the like managed by the radio resource control unit 1011. I do.

Further, the control unit 103 generates a control signal for controlling the receiving unit 105 and the transmitting unit 107 based on the control information from the higher layer processing unit 101. Control unit 103 outputs the generated control signal to receiving unit 105 and transmitting unit 107 to control receiving unit 105 and transmitting unit 107.

The receiving unit 105 also separates, demodulates, and decodes the received signal received from the base station apparatus 3 via the transmission / reception antenna unit 109 according to the control signal input from the control unit 103, and processes the decoded information in an upper layer process. Output to the unit 101.

Also, the radio reception unit 1057 converts a downlink signal received via the transmission / reception antenna unit 109 into a baseband signal by orthogonal demodulation (down-conversion: down covert), removes unnecessary frequency components, and reduces the signal level. The amplification level is controlled so as to be properly maintained, and quadrature demodulation is performed based on the in-phase component and the quadrature component of the received signal, and the quadrature demodulated analog signal is converted into a digital signal. The radio reception unit 1057 removes a portion corresponding to CP (Cyclic Prefix) from the converted digital signal, and performs a fast Fourier transform (FFT) on the signal from which the CP has been removed to obtain a frequency domain signal. Extract.

Also, the demultiplexing unit 1055 separates the extracted signal into PHICH, PDCCH, EPDCCH, PDSCH, and downlink reference signal. Further, demultiplexing section 1055 compensates the propagation path of PHICH, PDCCH, EPDCCH, and PDSCH from the estimated propagation path value input from channel measurement section 1059. Also, the demultiplexing unit 1055 outputs the demultiplexed downlink reference signal to the channel measurement unit 1059.

Also, the demodulating unit 1053 multiplies the PHICH by a corresponding code and synthesizes it, demodulates the synthesized signal using the BPSK (Binary Phase Shift Shift Keying) modulation method, and outputs it to the decoding unit 1051. Decoding section 1051 decodes the PHICH addressed to the own apparatus, and outputs the decoded HARQ indicator to higher layer processing section 101. Demodulation section 1053 performs QPSK modulation demodulation on PDCCH and / or EPDCCH, and outputs the result to decoding section 1051. Decoding section 1051 attempts to decode PDCCH and / or EPDCCH, and outputs the decoded downlink control information and the RNTI corresponding to the downlink control information to higher layer processing section 101 when the decoding is successful.

Further, the demodulation unit 1053 demodulates the modulation scheme notified by a downlink grant such as QPSK (Quadrature Phase Shift Keying), 16QAM (Quadrature Amplitude Modulation), 64QAM, etc., and outputs the result to the decoding unit 1051 To do. The decoding unit 1051 performs decoding based on the information regarding the coding rate notified by the downlink control information, and outputs the decoded downlink data (transport block) to the higher layer processing unit 101.

Also, the channel measurement unit 1059 measures the downlink path loss and channel state from the downlink reference signal input from the demultiplexing unit 1055, and outputs the measured path loss and channel state to the higher layer processing unit 101. Also, channel measurement section 1059 calculates an estimated value of the downlink propagation path from the downlink reference signal, and outputs it to demultiplexing section 1055. The channel measurement unit 1059 performs channel measurement and / or interference measurement in order to calculate CQI (may be CSI).

Further, the transmission unit 107 generates an uplink reference signal according to the control signal input from the control unit 103, encodes and modulates uplink data (transport block) input from the higher layer processing unit 101, PUCCH, PUSCH, and the generated uplink reference signal are multiplexed and transmitted to base station apparatus 3 via transmission / reception antenna section 109. Moreover, the transmission part 107 transmits uplink control information.

Also, the encoding unit 1071 performs encoding such as convolutional encoding and block encoding on the uplink control information input from the higher layer processing unit 101. The encoding unit 1071 performs turbo encoding based on information used for PUSCH scheduling.

Also, the modulation unit 1073 uses the modulation scheme in which the encoded bits input from the encoding unit 1071 are notified by downlink control information such as BPSK, QPSK, 16QAM, and 64QAM, or a modulation scheme predetermined for each channel. Modulate. Modulation section 1073 determines the number of spatially multiplexed data sequences based on information used for PUSCH scheduling, and transmits the same PUSCH by using MIMO (Multiple Input Multiple Multiple Output) SM (Spatial Multiplexing). A plurality of uplink data are mapped to a plurality of sequences, and precoding is performed on the sequences.

The uplink reference signal generator 1079 also identifies a physical layer cell identifier (physicalphylayer cell identity: PCI, Cell ID, etc.) for identifying the base station apparatus 3, a bandwidth for arranging the uplink reference signal, and uplink A sequence determined by a predetermined rule (formula) is generated based on a cyclic shift notified by the link grant, a parameter value for generating a DMRS sequence, and the like. The multiplexing unit 1075 rearranges the PUSCH modulation symbols in parallel according to the control signal input from the control unit 103, and then performs a discrete Fourier transform (Discrete-Fourier-Transform: DFT). Also, multiplexing section 1075 multiplexes the PUCCH and PUSCH signals and the generated uplink reference signal for each transmission antenna port. That is, multiplexing section 1075 arranges the PUCCH and PUSCH signals and the generated uplink reference signal in the resource element for each transmission antenna port.

Also, the wireless transmission unit 1077 generates an SC-FDMA symbol by performing inverse fast Fourier transform (Inverse Fast Transform: IFFT) on the multiplexed signal, and adds a CP to the generated SC-FDMA symbol. Generates a band digital signal, converts the baseband digital signal to an analog signal, removes excess frequency components using a low-pass filter, upconverts to a carrier frequency, amplifies the power, and transmits and receives antennas It outputs to the part 109 and transmits.

FIG. 13 is a schematic block diagram showing the configuration of the base station apparatus 3 in the present embodiment. As shown in the figure, the base station apparatus 3 includes an upper layer processing unit 301, a control unit 303, a reception unit 305, a transmission unit 307, and a transmission / reception antenna unit 309. The upper layer processing unit 301 includes a radio resource control unit 3011, a scheduling unit 3013, and a transmission power control unit 3015. The reception unit 305 includes a decoding unit 3051, a demodulation unit 3053, a demultiplexing unit 3055, a wireless reception unit 3057, and a channel measurement unit 3059. The transmission unit 307 includes an encoding unit 3071, a modulation unit 3073, a multiplexing unit 3075, a radio transmission unit 3077, and a downlink reference signal generation unit 3079.

The upper layer processing unit 301 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. Further, upper layer processing section 301 generates control information for controlling receiving section 305 and transmitting section 307 and outputs the control information to control section 303.

Further, the radio resource control unit 3011 included in the higher layer processing unit 301 generates downlink data (transport block), system information, RRC message, MAC CE (Control element), and the like arranged in the downlink PDSCH, Alternatively, it is acquired from the upper node and output to the transmission unit 307. The radio resource control unit 3011 manages various setting information / parameters of each terminal device 1. The radio resource control unit 3011 may set various setting information / parameters for each terminal apparatus 1 via higher layer signals. That is, the radio resource control unit 1011 transmits / broadcasts information indicating various setting information / parameters. The radio resource control unit 3011 is also referred to as a setting unit 3011.

Further, the scheduling unit 3013 included in the higher layer processing unit 301 assigns physical channels (PDSCH and PUSCH) based on the received channel state information, the channel estimation value input from the channel measurement unit 3059, the channel quality, and the like. And the coding rate and modulation scheme and transmission power of subframes, physical channels (PDSCH and PUSCH), and the like. Based on the scheduling result, the scheduling unit 3013 generates control information (for example, DCI format) for controlling the reception unit 305 and the transmission unit 307 and outputs the control information to the control unit 303. The scheduling unit 3013 further determines timing for performing transmission processing and reception processing.

In addition, the transmission power control unit 3015 included in the higher layer processing unit 301 responds to transmission on the PUSCH and PUCCH by the terminal device 1 via various setting information / parameters, TPC commands, and the like managed by the radio resource control unit 3011. Control transmission power.

Further, the control unit 303 generates a control signal for controlling the reception unit 305 and the transmission unit 307 based on the control information from the higher layer processing unit 301. The control unit 303 outputs the generated control signal to the reception unit 305 and the transmission unit 307 and controls the reception unit 305 and the transmission unit 307.

The receiving unit 305 separates, demodulates, and decodes the received signal received from the terminal device 1 via the transmission / reception antenna unit 309 according to the control signal input from the control unit 303, and the decoded information is the upper layer processing unit 301. Output to. The radio reception unit 3057 converts the uplink signal received via the transmission / reception antenna unit 309 into a baseband signal by orthogonal demodulation (down-conversion: down covert), removes unnecessary frequency components, and has a signal level of The amplification level is controlled so as to be appropriately maintained, and the quadrature demodulation is performed based on the in-phase component and the quadrature component of the received signal, and the analog signal subjected to the quadrature demodulation is converted into a digital signal. The receiving unit 305 receives uplink control information.

Further, the wireless reception unit 3057 removes a portion corresponding to CP (Cyclic Prefix) from the converted digital signal. The radio reception unit 3057 performs fast Fourier transform (FFT) on the signal from which the CP is removed, extracts a frequency domain signal, and outputs the signal to the demultiplexing unit 3055.

Also, the demultiplexing unit 1055 separates the signal input from the radio reception unit 3057 into signals such as PUCCH, PUSCH, and uplink reference signal. Note that this separation is performed based on radio resource allocation information included in the uplink grant that is determined in advance by the radio resource control unit 3011 by the base station device 3 and notified to each terminal device 1. In addition, demultiplexing section 3055 compensates for the propagation paths of PUCCH and PUSCH from the propagation path estimation value input from channel measurement section 3059. Further, the demultiplexing unit 3055 outputs the separated uplink reference signal to the channel measurement unit 3059.

Further, the demodulation unit 3053 performs inverse discrete Fourier transform (Inverse Discrete Fourier Transform: IDFT) on the PUSCH to obtain modulation symbols, and BPSK (Binary Phase Shift Keying), QPSK, The received signal is demodulated using a predetermined modulation method such as 16QAM, 64QAM, or the like, or the modulation method notified by the own device in advance to each terminal device 1 using the uplink grant. The demodulator 3053 uses the MIMO SM based on the number of spatially multiplexed sequences notified in advance to each terminal device 1 using an uplink grant and information indicating precoding performed on the sequences. A plurality of uplink data modulation symbols transmitted on the PUSCH are separated.

Also, the decoding unit 3051 encodes the demodulated PUCCH and PUSCH encoded bits in a predetermined encoding scheme, or a code that the device itself notifies the terminal device 1 in advance with an uplink grant. The decoding is performed at the conversion rate, and the decoded uplink data and the uplink control information are output to the upper layer processing unit 101. When PUSCH is retransmitted, decoding section 3051 performs decoding using the encoded bits held in the HARQ buffer input from higher layer processing section 301 and the demodulated encoded bits. Channel measurement section 309 measures an estimated channel value, channel quality, and the like from the uplink reference signal input from demultiplexing section 3055 and outputs the result to demultiplexing section 3055 and higher layer processing section 301.

Further, the transmission unit 307 generates a downlink reference signal according to the control signal input from the control unit 303, and encodes the HARQ indicator, downlink control information, and downlink data input from the higher layer processing unit 301. Then, PHICH, PDCCH, EPDCCH, PDSCH, and downlink reference signal are multiplexed, and the signal is transmitted to the terminal device 1 via the transmission / reception antenna unit 309.

Also, the encoding unit 3071 encodes the HARQ indicator, downlink control information, and downlink data input from the higher layer processing unit 301 with predetermined encoding such as block encoding, convolutional encoding, and turbo encoding. Encoding is performed using the method, or encoding is performed using the encoding method determined by the radio resource control unit 3011. The modulation unit 3073 modulates the coded bits input from the coding unit 3071 with a modulation scheme determined in advance by the radio resource control unit 3011 such as BPSK, QPSK, 16QAM, and 64QAM.

Also, the downlink reference signal generation unit 3079 obtains a sequence known by the terminal device 1 as a downlink reference signal, which is obtained by a predetermined rule based on a physical layer cell identifier (PCI) for identifying the base station device 3 or the like. Generate as The multiplexing unit 3075 multiplexes the modulated modulation symbol of each channel and the generated downlink reference signal. That is, multiplexing section 3075 arranges the modulated modulation symbol of each channel and the generated downlink reference signal in the resource element.

Also, the wireless transmission unit 3077 performs an inverse fast Fourier transform (Inverse Fast Fourier Transform: IFFT) on the multiplexed modulation symbol or the like to generate an OFDM symbol, adds a CP to the generated OFDM symbol, and adds baseband digital A signal is generated, a baseband digital signal is converted into an analog signal, an extra frequency component is removed by a low-pass filter, up-converted to a carrier frequency (up 、 convert), power amplified, and output to a transmission / reception antenna unit 309 To send.

More specifically, the terminal device 1 in the present embodiment receives information on the monitoring of DCI to which a first CRC parity bit (for example, 24-bit CRC) is added from the base station device, and the first CRC You may provide the receiving part 105 which monitors DCI to which the parity bit or the 2nd CRC parity bit (for example, 16 bit CRC) was added. Here, when the terminal apparatus is set to monitor the DCI to which the first CRC parity bit is added, the first CRC parity bit is at least in the user apparatus specific search space given by the C-RNTI. The added DCI may be monitored, and the DCI to which the second CRC parity bit is added may be monitored in a common search space. In addition, when the terminal apparatus is not set to monitor the DCI to which the first CRC parity bit is added, the second CRC parity bit is used in the user equipment specific search space provided by at least the C-RNTI. The DCI to which the second CRC parity bit is added may be monitored in the common search space. Here, the number of the first CRC parity bits may be 24, and the number of the second CRC parity bits may be 16.

In addition, the reception unit 105 is at least a user equipment specific search space given by Temporary C-RNTI regardless of whether or not the terminal apparatus is set to monitor DCI to which the first CRC parity bit is added. The DCI to which the second CRC parity bit is added may be monitored.

Further, the receiving unit 105 is scrambled by RA-RNTI in the common search space regardless of whether or not the terminal device is set to monitor the DCI to which the first CRC parity bit is added. The DCI to which the second CRC parity bit is added may be monitored.

Here, the first CRC parity bit may be scrambled by the C-RNTI. In addition, the second CRC parity bit may be scrambled by the C-RNTI or the Temporary C-RNTI.

In addition, the base station device 3 in the present embodiment transmits information related to DCI monitoring to which a first CRC parity bit (for example, 24-bit CRC) is added to the terminal device, and the first CRC parity bit or The transmitter 307 may transmit the DCI to which the second CRC parity bit (for example, 16-bit CRC) is added to the terminal device. Here, when the terminal apparatus is set to monitor the DCI to which the first CRC parity bit is added, the first CRC parity bit is added at least in the user equipment specific search space given by the C-RNTI. The transmitted DCI may be transmitted, and the DCI with the second CRC parity bit added may be transmitted in a common search space. Further, when the terminal device is not set to monitor the DCI to which the first CRC parity bit is added, the second CRC parity bit in the user device specific search space given by at least the C-RNTI May be transmitted, and the DCI with the second CRC parity bit added may be transmitted in the common search space. Here, the number of the first CRC parity bits may be 24, and the number of the second CRC parity bits may be 16.

In addition, the transmission unit 307 uses at least a user equipment specific search space given by Temporary C-RNTI regardless of whether or not the terminal apparatus is set to monitor the DCI to which the first CRC parity bit is added. The DCI with the second CRC parity bit added may be transmitted.

In addition, the transmission unit 307 is scrambled by the RA-RNTI in the common search space regardless of whether or not the terminal apparatus is set to monitor the DCI to which the first CRC parity bit is added. The DCI with the second CRC parity bit added may be transmitted.

Here, the first CRC parity bit may be scrambled by the C-RNTI. In addition, the second CRC parity bit may be scrambled by the C-RNTI or the Temporary C-RNTI.

Further, the terminal device 1 in the present embodiment may include a receiving unit 105 that receives the bit sequence <c ₀ ,..., C _{A + L−1} >. Here, the bit sequence _{<c 0, ..., c A} + L-1> , the bit sequence _{<b 0, ..., b A} + L-1> in the CRC parity bits _{<b A, ..., b A} + L-1> is RNTI < may be given by being scrambled by x _{rnti, 0} ,..., x _{rnti, 15} >. Here, the bit sequence _{<b 0, ..., b A} + L-1> , the payload <a ₀ ,...,a _A-1> of DCI CRC parity bits _{<p 0, ...,} is _{p L-1>} It may be given by being added. Here, A may be the size of the DCI payload, and L may be the number of CRC parity bits. Here, when L is 24, the bit sequence <c ₀ ,..., C _{A + L−1} > may be given based on Equation 3. When L is 16, the bit sequence <c ₀ ,..., C _{A + L−1} > may be given based on Equation 1. That is, when L is 16, the bit sequence <c ₀ ,..., C _{A + L−1} > may be given using an equation different from the equation when L is 24.

Here, the CRC parity bits _{<b A, ..., b A} + L-1> , said _{RNTI <x rnti, 0, ...} , x rnti, 15> bit sequence provided by being scrambled by _{<c A,} ... , c _{A + L−1} >, error detection may be performed.

Further, the base station apparatus 3 in the present embodiment may include a transmission unit 307 that transmits a bit sequence <c ₀ ,..., C _{A + L−1} >. Here, the bit sequence _{<c 0, ..., c A} + L-1> , the bit sequence _{<b 0, ..., b A} + L-1> in the CRC parity bits _{<b A, ..., b A} + L-1> is RNTI < may be given by being scrambled by x _{rnti, 0} ,..., x _{rnti, 15} >. Here, the bit sequence _{<b 0, ..., b A} + L-1> , the payload <a ₀ ,...,a _A-1> of DCI CRC parity bits _{<p 0, ...,} is _{p L-1>} It may be given by being added. Here, A may be the size of the DCI payload, and L may be the number of CRC parity bits. Here, when L is 24, the bit sequence <c ₀ ,..., C _{A + L−1} > may be given based on Equation 3. When L is 16, the bit sequence <c ₀ ,..., C _{A + L−1} > may be given based on Equation 1. That is, when L is 16, the bit sequence <c ₀ ,..., C _{A + L−1} > may be given using an equation different from the equation when L is 24.

Here, the CRC parity bits _{<b A, ..., b A} + L-1> , said _{RNTI <x rnti, 0, ...} , x rnti, 15> bit sequence provided by being scrambled by _{<c A,} ... , c _{A + L−1} >, error detection may be provided.

Also, the terminal device 1 in the present embodiment is based on the antenna selection mask when the reception unit 105 that receives the bit sequence <c ₀ ,..., C _{A + L−1} > and the closed-loop UE transmission antenna selection are set. And a transmission unit 107 that performs transmission antenna selection for the PUSCH. Here, when said closed-loop UE transmit antenna selection is set, the bit sequence _{<c 0, ..., c A} + L-1> , the bit sequence _{<b 0, ..., b A} + L-1> CRC parity bits in the <B _A , ..., b _{A + L-1} > is _scrambled by RNTI <x _{rnti, 0} , ..., x _{rnti, 15} > and antenna selection masks <x _{AS, 0} , ..., x _{AS, M} > May be given. Here, the bit sequence _{<b 0, ..., b A} + L-1> , the payload <a ₀ ,...,a _A-1> of DCI CRC parity bits <p0, ..., pL-1 > is added May be given by Here, A may be the size of the DCI payload, L may be the number of CRC parity bits, and M may be the number of bits of the antenna selection mask. Here, when the value of L is 16, the first transmitting antenna port is given by the first antenna selection mask <x _{AS, 0} ,..., X _{AS, M} >, and the value of L is 24. In this case, the first antenna selection mask <x _{AS, 0} ,..., X _{AS, M} > differs from the first antenna selection mask <x _{AS, 0 ,.} One transmit antenna port may be provided.

Here, when L is 24, the bit sequence <c ₀ ,..., C _{A + L−1} > may be given based on Equation 6. When L is 16, the bit sequence <c ₀ ,..., C _{A + L−1} > may be given based on Equation 5. Here, when L is 24, M may be 8, and when L is 16, M may be 16.

Also, the base station apparatus 3 in the present embodiment, based on the antenna selection mask, when the transmitter 307 that transmits the bit sequence <c ₀ ,..., C _{A + L−1} > and the closed-loop UE transmission antenna selection are set. And a receiving unit 305 that receives the PUSCH for which transmission antenna selection has been performed. Here, when setting the closed loop UE transmit antenna selection, the bit sequence _{<c 0, ..., c A} + L-1> , the bit sequence _{<b 0, ..., b A} + L-1> CRC parity bits in the < b _A , ..., b _{A + L-1} > is given by being scrambled by RNTI <x _{rnti, 0} , ..., x _{rnti, 15} > and antenna selection masks <x _{AS, 0} , ..., x _{AS, M} > May be. Here, the bit sequence _{<b 0, ..., b A} + L-1> , the payload <a ₀ ,...,a _A-1> of DCI CRC parity bits <p0, ..., pL-1 > is added May be given by Here, A may be the size of the DCI payload, L may be the number of CRC parity bits, and M may be the number of bits of the antenna selection mask. Here, when the value of L is 16, the first transmitting antenna port is given by the first antenna selection mask <x _{AS, 0} ,..., X _{AS, M} >, and the value of L is 24. In this case, the first antenna selection mask <x _{AS, 0} ,..., X _{AS, M} > differs from the first antenna selection mask <x _{AS, 0 ,.} One transmit antenna port may be provided.

Here, when L is 24, the bit sequence <c ₀ ,..., C _{A + L−1} > may be given based on Equation 6. When L is 16, the bit sequence <c ₀ ,..., C _{A + L−1} > may be given based on Equation 5. Here, when L is 24, M may be 8, and when L is 16, M may be 16.

Further, the base station apparatus 3 in the present embodiment transmits a setting related to transmission antenna selection, transmits a setting related to MTA (Multiple Timing Advance), whether to support the transmission antenna selection, and A receiving unit 305 that receives capability information used to indicate whether or not to support MTA from the terminal device. Here, the base station apparatus 3 may not set the MTA for the terminal apparatus when the transmission antenna selection is set for the terminal apparatus.

Also, the capability information may be used to indicate whether transmission on the PUCCH in the secondary cell is supported. Here, when the transmission antenna selection is set for the terminal apparatus, the base station apparatus 3 does not set transmission on the PUCCH in the secondary cell to the terminal apparatus, and When the MTA is set, it may be possible to set transmission on the PUCCH in the secondary cell to the terminal device.

In addition, when the transmitter 307 sets a plurality of serving cells for the terminal device and enables closed-loop UE transmission antenna selection by setting the transmission antenna selection, in one subframe, A plurality of transmission antenna selection commands may be transmitted to the terminal device. Here, each of the plurality of transmit antenna selection commands may be used to indicate the same transmit antenna port for transmission on the PUSCH.

In addition, the terminal device 1 in the present embodiment receives a setting related to transmission antenna selection, receives a setting related to MTA (Multiple Timing Advance), whether to support the transmission antenna selection, and the MTA. And a transmission unit 307 that transmits capability information used to indicate whether or not to support the base station apparatus. Here, when the transmission antenna selection is set by the base station apparatus, the terminal apparatus 1 may not be expected to set the MTA by the base station apparatus.

Also, the capability information may be used to indicate whether transmission on the PUCCH in the secondary cell is supported. Here, when the transmission antenna selection is set by the base station apparatus, the terminal apparatus 1 is not expected to be set to transmit on the PUCCH in the secondary cell by the base station apparatus. When the MTA is set by a station apparatus, transmission on the PUCCH in the secondary cell may be set by the base station apparatus.

In addition, the reception unit 105 is configured to use a certain subframe when a plurality of serving cells are set for the terminal apparatus and closed-loop UE transmission antenna selection is enabled by setting the transmission antenna selection. A plurality of transmit antenna selection commands may be received from the base station apparatus. Here, each of the plurality of transmit antenna selection commands may be used to indicate the same transmit antenna port for transmission on the PUSCH.

Thereby, the base station apparatus 3 and the terminal apparatus 1 can communicate efficiently.

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, and other daily life 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.

Some aspects of the present invention can be applied to a terminal device, a base station device, a communication method, an integrated circuit, and the like that require efficient communication between the base station device and the terminal device.

1 (1A, 1B, 1C) Terminal apparatus 3 Base station apparatus 101 Upper layer processing section 103 Control section 105 Reception section 107 Transmission section 301 Upper layer processing section 303 Control section 305 Reception section 307 Transmission section 1011 Radio resource control section 1013 Scheduling information Interpretation unit 1015 Transmission power control unit 3011 Radio resource control unit 3013 Scheduling unit 3015 Transmission power control unit

Claims (14)

1. A terminal device,
   Receive information from the base station apparatus regarding the DCI monitor to which the first CRC parity bit is added,
   A receiving unit for monitoring the DCI to which the first CRC parity bit or the second CRC parity bit is added;
   When the terminal apparatus is set to monitor the DCI to which the first CRC parity bit is added, the first CRC parity bit is added at least in the user equipment specific search space given by the C-RNTI Monitoring the DCI, and monitoring the DCI with the second CRC parity bit added in a common search space;
   When the terminal apparatus is not set to monitor the DCI with the first CRC parity bit added, the second CRC parity bit is added in the user equipment specific search space provided by at least the C-RNTI. And monitoring the DCI to which the second CRC parity bit is added in the common search space.
   The number of the first CRC parity bits is a first value, and the number of the second CRC parity bits is a first value.
2. The receiver is
   Regardless of whether the terminal is configured to monitor the DCI with the first CRC parity bit added, the second CRC parity bit is at least in the user equipment specific search space provided by the Temporary C-RNTI. The terminal device according to claim 1, wherein the DCI to which is added is monitored.
3. The receiver is
   The second CRC parity bit scrambled by RA-RNTI in the common search space regardless of whether the terminal apparatus is set to monitor the DCI to which the first CRC parity bit is added. The terminal device according to claim 1, wherein the added DCI is monitored.
4. The terminal apparatus according to any one of claims 1 to 3, wherein the first CRC parity bit is scrambled by the C-RNTI.
5. The terminal device according to any one of claims 2 to 4, wherein the second CRC parity bit is scrambled by the C-RNTI or the Temporary C-RNTI.
6. A base station device,
   Sending information about the DCI monitor with the first CRC parity bit added to the terminal device,
   A transmission unit that transmits DCI to which the first CRC parity bit or the second CRC parity bit is added to the terminal device;
   When the terminal apparatus is set to monitor the DCI with the first CRC parity bit added, the user equipment specific search space given by at least C-RNTI is used to add the first CRC parity bit. Transmitting DCI and transmitting the DCI with the second CRC parity bit added in a common search space;
   When the terminal device is not set to monitor the DCI to which the first CRC parity bit is added, the second CRC parity bit is added in the user device specific search space provided by at least the C-RNTI. The transmitted DCI, and the DCI with the second CRC parity bit added in the common search space,
   The number of the first CRC parity bits is a first value, and the number of the second CRC parity bits is a second value.
7. The transmitter is
   Regardless of whether the terminal is set to monitor DCI with the first CRC parity bit added, the second CRC parity bit is at least in the user equipment specific search space given by the Temporary C-RNTI. The base station apparatus according to claim 6, wherein the added DCI is transmitted.
8. The transmitter is
   The second CRC parity bit scrambled by RA-RNTI is added in the common search space regardless of whether the terminal apparatus is set to monitor the DCI to which the first CRC parity bit is added. The base station apparatus according to claim 6 or 7, wherein the transmitted DCI is transmitted.
9. The base station apparatus according to any one of claims 6 to 8, wherein the first CRC parity bit is scrambled by the C-RNTI.
10. The base station apparatus according to claim 7, wherein the second CRC parity bit is scrambled by the C-RNTI or the Temporary C-RNTI.
11. A communication method for a terminal device,
    Receive information from the base station apparatus regarding the DCI monitor to which the first CRC parity bit is added,
    Monitoring the DCI to which the first CRC parity bit or the second CRC parity bit is added;
    When the terminal device is set to monitor the DCI with the first CRC parity bit added, the user equipment specific search space given by at least C-RNTI adds the first CRC parity bit. Monitoring the DCI and monitoring the DCI with the second CRC parity bit added in a common search space;
    When the terminal apparatus is not set to monitor the DCI with the first CRC parity bit added, the second CRC parity bit is added in the user equipment specific search space provided by at least the C-RNTI. And monitoring the DCI to which the second CRC parity bit is added in the common search space.
    The communication method, wherein the number of the first CRC parity bits is a first value, and the number of the second CRC parity bits is a second value.
12. A communication method of a base station apparatus,
    Sending information about the DCI monitor with the first CRC parity bit added to the terminal device,
    Transmitting DCI to which the first CRC parity bit or the second CRC parity bit is added to the terminal device;
    When the terminal apparatus is set to monitor the DCI with the first CRC parity bit added, the user equipment specific search space given by at least C-RNTI is used to add the first CRC parity bit. Transmitting DCI and transmitting the DCI with the second CRC parity bit added in a common search space;
    When the terminal device is not set to monitor the DCI to which the first CRC parity bit is added, the second CRC parity bit is added in the user device specific search space provided by at least the C-RNTI. The transmitted DCI, and the DCI with the second CRC parity bit added in the common search space,
    The communication method, wherein the number of the first CRC parity bits is a first value, and the number of the second CRC parity bits is a second value.
13. An integrated circuit mounted on a terminal device,
    Receive information from the base station apparatus regarding the DCI monitor to which the first CRC parity bit is added,
    Causing the terminal device to exert a function of monitoring the DCI to which the first CRC parity bit or the second CRC parity bit is added;
    When the terminal device is set to monitor the DCI with the first CRC parity bit added, the user equipment specific search space given by at least C-RNTI adds the first CRC parity bit. Monitoring the DCI and monitoring the DCI with the second CRC parity bit added in a common search space;
    When the terminal apparatus is not set to monitor the DCI with the first CRC parity bit added, the second CRC parity bit is added in the user equipment specific search space provided by at least the C-RNTI. And monitoring the DCI to which the second CRC parity bit is added in the common search space.
    The number of the first CRC parity bits is a first value, and the number of the second CRC parity bits is a second value.
14. An integrated circuit mounted on a base station device,
    Sending information about the DCI monitor with the first CRC parity bit added to the terminal device,
    Causing the base station apparatus to exhibit a function of transmitting DCI to which the first CRC parity bit or the second CRC parity bit is added to the terminal apparatus;
    When the terminal apparatus is set to monitor the DCI with the first CRC parity bit added, the user equipment specific search space given by at least C-RNTI is used to add the first CRC parity bit. Transmitting DCI and transmitting the DCI with the second CRC parity bit added in a common search space;
    When the terminal device is not set to monitor the DCI to which the first CRC parity bit is added, the second CRC parity bit is added in the user device specific search space provided by at least the C-RNTI. The transmitted DCI, and the DCI with the second CRC parity bit added in the common search space,
    The number of the first CRC parity bits is a first value, and the number of the second CRC parity bits is a second value.

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