WO2016036100A1 - 무선 통신 시스템에서 무선 신호 송수신 방법 및 장치 - Google Patents
무선 통신 시스템에서 무선 신호 송수신 방법 및 장치 Download PDFInfo
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- WO2016036100A1 WO2016036100A1 PCT/KR2015/009174 KR2015009174W WO2016036100A1 WO 2016036100 A1 WO2016036100 A1 WO 2016036100A1 KR 2015009174 W KR2015009174 W KR 2015009174W WO 2016036100 A1 WO2016036100 A1 WO 2016036100A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
- H04L1/1671—Details of the supervisory signal the supervisory signal being transmitted together with control information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1861—Physical mapping arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04L5/00—Arrangements affording multiple use of the transmission path
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
- H04L5/0055—Physical resource allocation for ACK/NACK
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
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- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
Definitions
- the present invention relates to a wireless communication system, and more particularly to a method and apparatus for transmitting and receiving wireless signals.
- the wireless communication system includes a carrier aggregation (CA) -based wireless communication system.
- CA carrier aggregation
- Wireless communication systems are widely deployed to provide various kinds of communication services such as voice and data.
- a wireless communication system is a multiple access system capable of supporting communication with multiple users by sharing available system resources (bandwidth, transmission power, etc.).
- multiple access systems include code division multiple access (CDMA) systems, frequency division multiple access (FDMA) systems, time division multiple access (TDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, and single carrier frequency (SC-FDMA). division multiple access) system.
- CDMA code division multiple access
- FDMA frequency division multiple access
- TDMA time division multiple access
- OFDMA orthogonal frequency division multiple access
- SC-FDMA single carrier frequency division multiple access
- An object of the present invention is to provide a method and an apparatus therefor for efficiently performing a wireless signal transmission and reception process. Another object of the present invention is to provide a method for efficiently transmitting uplink control information and an apparatus therefor.
- a frequency division duplex (FDD) PCell primary cell
- TDD Time Division Duplex
- SCell Time Division Duplex
- SR scheduling request
- PUCCH Physical Uplink Control Channel
- a terminal configured to transmit hybrid automatic repeat request acknowledgment (HARQ-ACK) information in a wireless communication system
- the terminal comprising: a radio frequency (RF) module; And a processor, wherein the processor configures a Frequency Division Duplex (FDD) PCell (Primary Cell) and a Time Division Duplex (TDD) SCell (Secondary Cell) and receives pattern indication information received through a Layer 1 (L1) signal.
- FDD Frequency Division Duplex
- TDD Time Division Duplex
- L1 Layer 1
- the HARQ-ACK information includes both HARQ-ACK responses for the PCell and the SCell, and when the transmission direction of the TDD SCell is UL in the SF based on the reference UL-DL SF pattern,
- the HARQ-ACK information corresponds to HARQ-ACK for the PCell.
- a terminal including only is provided.
- the HARQ-ACK response for the PCell and SCell may include a HARQ-ACK response bundled for each cell. .
- the HARQ-ACK information includes only HARQ-ACK response for the PCell
- the HARQ-ACK information includes a separate HARQ-ACK response generated per transport block for one or more transport blocks of the PCell. can do.
- the SF may indicate an SF in which the transmission direction may be reset from UL to DL. .
- the SF may indicate an SF in which the transmission direction cannot be reset from UL to DL. .
- the SR PUCCH may include PUCCH format 1a or PUCCH format 1b.
- uplink control information can be efficiently transmitted.
- FIG. 1 illustrates physical channels used in a 3GPP LTE (-A) system, which is an example of a wireless communication system, and a general signal transmission method using the same.
- -A 3GPP LTE
- FIG. 2 illustrates a structure of a radio frame.
- FIG. 3 illustrates a resource grid of a downlink slot.
- EDCCH Enhanced Physical Downlink Control Channel
- FIG. 6 illustrates a structure of an uplink subframe.
- PUCCH 7 illustrates a slot level structure of a Physical Uplink Control Channel (PUCCH) format 1a / 1b.
- PUCCH Physical Uplink Control Channel
- CA 8 illustrates a Carrier Aggregation (CA) communication system.
- FIG. 10 illustrates an FDD PCell-TDD SCell CA.
- 11 to 12 illustrate a HARQ-ACK transmission process in the FDD PCell-TDD SCell CA.
- FIG. 14 illustrates a HARQ-ACK transmission process according to an embodiment of the present invention.
- FIG. 15 illustrates a base station and a terminal that can be applied to the present invention.
- CDMA code division multiple access
- FDMA frequency division multiple access
- TDMA time division multiple access
- OFDMA orthogonal frequency division multiple access
- SC-FDMA single carrier frequency division multiple access
- CDMA may be implemented with a radio technology such as Universal Terrestrial Radio Access (UTRA) or CDMA2000.
- TDMA may be implemented with wireless technologies such as Global System for Mobile communications (GSM) / General Packet Radio Service (GPRS) / Enhanced Data Rates for GSM Evolution (EDGE).
- GSM Global System for Mobile communications
- GPRS General Packet Radio Service
- EDGE Enhanced Data Rates for GSM Evolution
- OFDMA may be implemented in a wireless technology such as IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, Evolved UTRA (E-UTRA).
- UTRA is part of the Universal Mobile Telecommunications System (UMTS).
- 3rd Generation Partnership Project (3GPP) long term evolution (LTE) is part of Evolved UMTS (E-UMTS) using E-UTRA and LTE-A (Advanced) is an evolved version of 3GPP LTE.
- 3GPP LTE / LTE-A the technical spirit of the present invention is not limited thereto.
- a terminal receives information through a downlink (DL) from a base station, and the terminal transmits information through an uplink (UL) to the base station.
- the information transmitted and received between the base station and the terminal includes data and various control information, and various physical channels exist according to the type / use of the information transmitted and received.
- FIG. 1 is a diagram for explaining physical channels used in a 3GPP LTE (-A) system and a general signal transmission method using the same.
- the terminal which is powered on again or enters a new cell while the power is turned off performs an initial cell search operation such as synchronizing with the base station in step S101.
- the UE receives a Primary Synchronization Channel (P-SCH) and a Secondary Synchronization Channel (S-SCH) from the base station, synchronizes with the base station, and provides information such as a cell identity. Acquire.
- the terminal may receive a physical broadcast channel (PBCH) from the base station to obtain broadcast information in a cell.
- PBCH physical broadcast channel
- the terminal may check a downlink channel state by receiving a downlink reference signal (DL RS) in an initial cell search step.
- DL RS downlink reference signal
- the UE After completing the initial cell discovery, the UE receives a physical downlink control channel (PDSCH) according to physical downlink control channel (PDCCH) and physical downlink control channel information in step S102 to be more specific.
- PDSCH physical downlink control channel
- PDCCH physical downlink control channel
- System information can be obtained.
- the terminal may perform a random access procedure such as steps S103 to S106 to complete the access to the base station.
- the UE transmits a preamble through a physical random access channel (PRACH) (S103), a response message to the preamble through a physical downlink control channel and a corresponding physical downlink shared channel. Can be received (S104).
- contention resolution procedure such as transmission of an additional physical random access channel (S105) and reception of a physical downlink control channel and a corresponding physical downlink shared channel (S106). ) Can be performed.
- the UE After performing the above-described procedure, the UE performs a general downlink control channel / physical downlink shared channel reception (S107) and a physical uplink shared channel (PUSCH) / as a general uplink / downlink signal transmission procedure.
- Physical uplink control channel (PUCCH) transmission (S108) may be performed.
- the control information transmitted from the terminal to the base station is collectively referred to as uplink control information (UCI).
- UCI includes Hybrid Automatic Repeat and reQuest Acknowledgment / Negative-ACK (HARQ ACK / NACK), Scheduling Request (SR), Channel State Information (CSI), and the like.
- HARQ ACK / NACK Hybrid Automatic Repeat and reQuest Acknowledgment / Negative-ACK
- SR Scheduling Request
- CSI Channel State Information
- the CSI includes a Channel Quality Indicator (CQI), a Precoding Matrix Indicator (PMI), a Rank Indication (RI), and the like.
- CQI Channel Quality Indicator
- PMI Precoding Matrix Indicator
- RI Rank Indication
- UCI is generally transmitted through PUCCH, but may be transmitted through PUSCH when control information and traffic data should be transmitted at the same time. In addition, the UCI may be aperiodically transmitted through the PUSCH by the request / instruction of the network.
- the uplink / downlink data packet transmission is performed in subframe units, and the subframe is defined as a time interval including a plurality of symbols.
- the 3GPP LTE standard supports a type 1 radio frame structure applicable to frequency division duplex (FDD) and a type 2 radio frame structure applicable to time division duplex (TDD).
- the downlink radio frame consists of 10 subframes, and one subframe consists of two slots in the time domain.
- the time taken for one subframe to be transmitted is called a transmission time interval (TTI).
- TTI transmission time interval
- one subframe may have a length of 1 ms
- one slot may have a length of 0.5 ms.
- One slot includes a plurality of OFDM symbols in the time domain and a plurality of resource blocks (RBs) in the frequency domain.
- RBs resource blocks
- a resource block (RB) as a resource allocation unit may include a plurality of consecutive subcarriers in one slot.
- the number of OFDM symbols included in the slot may vary depending on the configuration of a cyclic prefix (CP).
- CP has an extended CP (normal CP) and a normal CP (normal CP).
- normal CP when an OFDM symbol is configured by a normal CP, the number of OFDM symbols included in one slot may be seven.
- extended CP since the length of one OFDM symbol is increased, the number of OFDM symbols included in one slot is smaller than that of the normal CP.
- the number of OFDM symbols included in one slot may be six.
- an extended CP may be used to further reduce intersymbol interference.
- the subframe includes 14 OFDM symbols.
- First up to three OFDM symbols of a subframe may be allocated to a physical downlink control channel (PDCCH), and the remaining OFDM symbols may be allocated to a physical downlink shared channel (PDSCH).
- PDCCH physical downlink control channel
- PDSCH physical downlink shared channel
- Type 2 (b) illustrates the structure of a type 2 radio frame.
- Type 2 radio frames consist of two half frames.
- the half frame includes 4 (5) normal subframes and 1 (0) special subframes.
- the general subframe is used for uplink or downlink according to the UL-Downlink configuration.
- the subframe consists of two slots.
- Table 1 illustrates a subframe configuration in a radio frame according to the UL-DL configuration.
- D represents a downlink subframe
- U represents an uplink subframe
- S represents a special subframe.
- the special subframe includes a downlink pilot time slot (DwPTS), a guard period (GP), and an uplink pilot time slot (UpPTS).
- DwPTS is used for initial cell search, synchronization or channel estimation at the terminal.
- UpPTS is used for channel estimation at the base station and synchronization of uplink transmission of the terminal.
- the guard period is a period for removing interference generated in the uplink due to the multipath delay of the downlink signal between the uplink and the downlink.
- the structure of the radio frame is merely an example, and the number of subframes, the number of slots, and the number of symbols in the radio frame may be variously changed.
- FIG. 3 illustrates a resource grid of a downlink slot.
- the downlink slot includes a plurality of OFDM symbols in the time domain.
- one downlink slot includes 7 OFDM symbols and one resource block (RB) is illustrated as including 12 subcarriers in the frequency domain.
- Each element on the resource grid is referred to as a resource element (RE).
- One RB contains 12x7 REs.
- the number NDL of RBs included in the downlink slot depends on the downlink transmission band.
- the structure of the uplink slot may be the same as the structure of the downlink slot.
- FIG. 4 illustrates a structure of a downlink subframe.
- up to three (4) OFDM symbols located in front of the first slot in a subframe correspond to a control region to which a control channel is allocated.
- the remaining OFDM symbol corresponds to a data region to which a physical downlink shared chance (PDSCH) is allocated, and a basic resource unit of the data region is RB.
- Examples of downlink control channels used in LTE include a physical control format indicator channel (PCFICH), a physical downlink control channel (PDCCH), a physical hybrid ARQ indicator channel (PHICH), and the like.
- the PCFICH is transmitted in the first OFDM symbol of a subframe and carries information on the number of OFDM symbols used for transmission of a control channel within the subframe.
- the PHICH is a response to uplink transmission and carries an HARQ ACK / NACK (acknowledgment / negative-acknowledgment) signal.
- Control information transmitted on the PDCCH is referred to as downlink control information (DCI).
- DCI includes uplink or downlink scheduling information or an uplink transmit power control command for a certain group of terminals.
- DCI downlink control information
- the DCI format has formats 0, 3, 3A, 4 for uplink, formats 1, 1A, 1B, 1C, 1D, 2, 2A, 2B, 2C, etc. defined for downlink.
- the type of the information field, the number of information fields, the number of bits of each information field, etc. vary according to the DCI format.
- the DCI format may include a hopping flag, an RB assignment, a modulation coding scheme (MCS), a redundancy version (RV), a new data indicator (NDI), a transmit power control (TPC), It optionally includes information such as a HARQ process number and a precoding matrix indicator (PMI) confirmation.
- MCS modulation coding scheme
- RV redundancy version
- NDI new data indicator
- TPC transmit power control
- PMI precoding matrix indicator
- any DCI format may be used for transmitting two or more kinds of control information.
- DCI format 0 / 1A is used to carry DCI format 0 or DCI format 1, which are distinguished by a flag field.
- the PDCCH includes a transmission format and resource allocation of a downlink shared channel (DL-SCH), resource allocation information for an uplink shared channel (UL-SCH), paging information for a paging channel (PCH), and system information on the DL-SCH. ), Resource allocation information of a higher-layer control message such as a random access response transmitted on a PDSCH, transmission power control commands for individual terminals in an arbitrary terminal group, activation of voice over IP (VoIP), and the like. .
- a plurality of PDCCHs may be transmitted in the control region.
- the terminal may monitor the plurality of PDCCHs.
- the PDCCH is transmitted on an aggregation of one or a plurality of consecutive CCEs (consecutive control channel elements).
- the CCE is a logical allocation unit used to provide a PDCCH of a predetermined coding rate according to the state of a radio channel.
- the CCE corresponds to a plurality of resource element groups (REGs).
- the format of the PDCCH and the number of bits of the available PDCCH are determined according to the correlation between the number of CCEs and the code rate provided by the CCEs.
- the base station determines the PDCCH format according to the DCI to be transmitted to the terminal, and adds a cyclic redundancy check (CRC) to the control information.
- the CRC is masked with a unique identifier (referred to as a radio network temporary identifier (RNTI)) depending on the owner of the PDCCH or the intended use.
- RNTI radio network temporary identifier
- a unique identifier (eg, C-RNTI (cell-RNTI)) of the terminal is masked on the CRC.
- C-RNTI cell-RNTI
- a paging indication identifier eg, p-RNTI (p-RNTI)
- SIB system information block
- SI-RNTI system information RNTI
- RA-RNTI random access-RNTI
- the PDCCH carries a message known as Downlink Control Information (DCI), and the DCI includes resource allocation and other control information for one terminal or a group of terminals.
- DCI Downlink Control Information
- a plurality of PDCCHs may be transmitted in one subframe.
- Each PDCCH is transmitted using one or more Control Channel Elements (CCEs), and each CCE corresponds to nine sets of four resource elements.
- CCEs Control Channel Elements
- the four resource elements are referred to as resource element groups (REGs).
- Four QPSK symbols are mapped to one REG.
- the resource element allocated to the reference signal is not included in the REG, so that the total number of REGs within a given OFDM symbol depends on the presence of a cell-specific reference signal.
- REG is also used for other downlink control channels (PCFICH and PHICH). That is, REG is used as a basic resource unit of the control region.
- PCFICH downlink control channels
- PHICH PHICH
- a PDCCH with a format consisting of n CCEs can only start with a CCE having the same number as a multiple of n.
- the number of CCEs used for transmission of a specific PDCCH is determined by the base station according to channel conditions. For example, if the PDCCH is for a terminal having a good downlink channel (eg, close to a base station), one CCE may be sufficient. However, in case of a terminal having a bad channel (eg, close to a cell boundary), eight CCEs may be used to obtain sufficient robustness.
- the power level of the PDCCH may be adjusted according to channel conditions.
- the approach introduced in LTE is to define a limited set of CCE locations where the PDCCH can be located for each terminal.
- the limited set of CCE locations where the UE can find its own PDCCH may be referred to as a search space (SS).
- the search space has a different size according to each PDCCH format.
- UE-specific and common search spaces are defined separately.
- the UE-Specific Search Space (USS) is set individually for each terminal, and the range of the Common Search Space (CSS) is known to all terminals.
- UE-specific and common search spaces may overlap for a given terminal.
- the base station may not find CCE resources for transmitting the PDCCH to all possible UEs.
- the UE-specific hopping sequence is applied to the start position of the UE-specific search space in order to minimize the possibility of the above blocking leading to the next subframe.
- Table 3 shows the sizes of common and UE-specific search spaces.
- the terminal In order to keep the computational load according to the total number of blind decoding (BD) under control, the terminal is not required to simultaneously search all defined DCI formats.
- the terminal In general, within a UE-specific search space, the terminal always searches for formats 0 and 1A. Formats 0 and 1A have the same size and are distinguished by flags in the message.
- the terminal may be required to receive the additional format (eg, 1, 1B or 2 depending on the PDSCH transmission mode set by the base station).
- the UE searches for formats 1A and 1C.
- the terminal may be configured to search for format 3 or 3A.
- Formats 3 and 3A have the same size as formats 0 and 1A and can be distinguished by scrambled CRCs with different (common) identifiers, rather than terminal-specific identifiers.
- PDSCH transmission schemes according to transmission modes and information contents of DCI formats are listed below.
- Transmission mode 1 Transmission from a single base station antenna port
- Transmission mode 4 closed-loop spatial multiplexing
- Transmission Mode 7 Single-antenna Port (Port 5) Transmission
- ⁇ Transmission Mode 8 Double Layer Transmission (Ports 7 and 8) or Single-Antenna Port (Ports 7 or 8) Transmission
- ⁇ Transfer Mode 9 Up to eight layer transfers (ports 7 to 14) or single-antenna ports (ports 7 or 8)
- Format 1B Compact resource allocation for PDSCH (mode 6) using rank-1 closed-loop precoding
- Format 1D compact resource allocation for PDSCH (mode 5) using multi-user MIMO
- EPDCCH is a channel further introduced in LTE-A.
- a control region (see FIG. 4) of a subframe may be allocated a PDCCH (Legacy PDCCH, L-PDCCH) according to the existing LTE.
- the L-PDCCH region means a region to which an L-PDCCH can be allocated.
- a PDCCH may be additionally allocated in a data region (eg, a resource region for PDSCH).
- the PDCCH allocated to the data region is called an EPDCCH.
- the EPDCCH carries a DCI.
- the EPDCCH may carry downlink scheduling information and uplink scheduling information.
- the terminal may receive an EPDCCH and receive data / control information through a PDSCH corresponding to the EPDCCH.
- the terminal may receive the EPDCCH and transmit data / control information through a PUSCH corresponding to the EPDCCH.
- the EPDCCH / PDSCH may be allocated from the first OFDM symbol of the subframe according to the cell type.
- the PDCCH herein includes both L-PDCCH and EPDCCH.
- FIG. 6 illustrates a structure of an uplink subframe used in LTE (-A).
- the subframe 500 is composed of two 0.5 ms slots 501. Assuming the length of a Normal Cyclic Prefix (CP), each slot consists of seven symbols 502 and one symbol corresponds to one SC-FDMA symbol.
- the resource block (RB) 503 is a resource allocation unit corresponding to 12 subcarriers in the frequency domain and one slot in the time domain.
- the structure of an uplink subframe of LTE (-A) is largely divided into a data region 504 and a control region 505.
- the data area means a communication resource used in transmitting data such as voice and packet transmitted to each terminal, and includes a PUSCH (Physical Uplink Shared Channel).
- PUSCH Physical Uplink Shared Channel
- the control region means a communication resource used to transmit an uplink control signal, for example, a downlink channel quality report from each terminal, a received ACK / NACK for an uplink signal, an uplink scheduling request, and a PUCCH (Physical Uplink). Control Channel).
- the sounding reference signal (SRS) is transmitted through an SC-FDMA symbol located last on the time axis in one subframe. SRSs of multiple terminals transmitted in the last SC-FDMA of the same subframe can be distinguished according to frequency location / sequence.
- PUCCH may be used to transmit the following control information.
- SR Service Request: Information used to request a shared channel (UL-SCH) resource. It is transmitted using OOK (On-Off Keying) method.
- HARQ-ACK This is a reception response signal for a DL signal (eg PDSCH, SPS release PDCCH). For example, one bit of ACK / NACK is transmitted in response to one DL codeword, and two bits of ACK / NACK are transmitted in response to two DL codewords.
- a DL signal eg PDSCH, SPS release PDCCH.
- CSI Channel Status Information: Feedback information for the DL channel.
- the CSI includes Channel Quality Information (CQI), Rank Indicator (RI), Precoding Matrix Indicator (PMI), Precoding Type Indicator (PTI), and the like.
- CQI Channel Quality Information
- RI Rank Indicator
- PMI Precoding Matrix Indicator
- PTI Precoding Type Indicator
- CSI means periodic CSI (p-CSI).
- a-CSI Aperiodic CSI (a-CSI) transmitted at the request of the base station is transmitted through the PUSCH.
- Table 4 shows the relationship between the PUCCH format (PF) and UCI in LTE (-A).
- PUCCH format 1a / 1b shows the structure of a PUCCH format 1a / 1b at the slot level.
- PUCCH formats 1a and 1b control information having the same content is repeated in slot units in a subframe.
- the ACK / NAK signals of different terminals are transmitted by different cyclic shift codes (CSs) and orthogonal cover codes (OCCs) of a computer-generated constant amplitude zero auto correlation (CG-CAZAC) sequence. It is transmitted through different configured resources.
- the OCC contains Walsh / DFT orthogonal code.
- ACK / NACK signals of 18 terminals may be multiplexed in the same physical resource block (PRB).
- PRB physical resource block
- PUCCH format 1 ACK / NAK is replaced with SR in the structure of PUCCH formats 1a / 1b.
- CA 8 illustrates a Carrier Aggregation (CA) communication system.
- a plurality of uplink / downlink component carriers may be collected to support a wider uplink / downlink bandwidth.
- Each of the CCs may be adjacent or non-adjacent to each other in the frequency domain.
- the bandwidth of each component carrier can be determined independently. It is also possible to merge asymmetric carriers in which the number of UL CCs and the number of DL CCs are different.
- the control information may be set to be transmitted and received only through a specific CC. This particular CC may be referred to as the primary CC and the remaining CCs may be referred to as the secondary CC.
- the PDCCH for downlink allocation may be transmitted in DL CC # 0, and the corresponding PDSCH may be transmitted in DL CC # 2.
- component carrier may be replaced with other equivalent terms (eg, carrier, cell, etc.).
- a carrier indicator field (CIF) is used.
- Configuration for the presence or absence of CIF in the PDCCH may be semi-statically enabled by higher layer signaling (eg, RRC signaling) to be UE-specific (or UE group-specific).
- RRC signaling e.g., RRC signaling
- ⁇ CIF disabled The PDCCH on the DL CC allocates PDSCH resources on the same DL CC and PUSCH resources on a single linked UL CC.
- a PDCCH on a DL CC may allocate a PDSCH or PUSCH resource on one DL / UL CC among a plurality of merged DL / UL CCs using the CIF.
- the base station may allocate a monitoring DL CC (set) to reduce the BD complexity at the terminal side.
- the UE may perform detection / decoding of the PDCCH only in the corresponding DL CC.
- the base station may transmit the PDCCH only through the monitoring DL CC (set).
- the monitoring DL CC set may be set in a terminal-specific, terminal-group-specific or cell-specific manner.
- DL CC A is set to PDCCH CC.
- DL CC A to C may be referred to as a serving CC, a serving carrier, a serving cell, and the like.
- each DL CC can transmit only PDCCH scheduling its PDSCH without CIF according to the LTE PDCCH rule (non-cross-CC scheduling).
- a specific CC eg, DL CC A
- PDCCH is not transmitted in DL CC B / C.
- the next system considers a method of setting / supporting a CA (that is, an FDD-TDD CA) between an FDD cell and a TDD cell in a terminal for more flexible frequency resource operation / utilization.
- 10 illustrates a case in which an FDD PCell and a TDD SCell are merged.
- the FDD DL HARQ timing may be applied not only to the FDD PCell but also to the TDD SCell.
- DL HARQ timing is a reception time (eg, SF) of a downlink signal (eg, PDSCH, PDCCH indicating release of Semi-Persistent Scheduling) requiring HARQ-ACK feedback, and transmission of HARQ-ACK information thereof.
- Time relationship e.g., SF
- time intervals e.g., SF intervals
- PDSCH-to-HARQ-ACK timing i.e., PDSCH-to-HARQ-ACK timing.
- the FDD DL HARQ timing includes transmitting HARQ-ACK feedback for PDSCH reception in SF #n in SF # (n + 4).
- CHsel mapping includes mapping HARQ-ACK state to PUCCH resources (ie, HARQ-ACK state-to-PUCCH resource mapping).
- Table 5 shows a transport block / serving cell-to-HARQ-ACK (j) mapping for FDD-FDD CA CHsel.
- the existing FDD-FDD CA CHsel supports CAs of two cells, and CHsel mapping applied according to the number of transport blocks supported by each cell is different.
- Tables 6 to 8 show the CHsel mapping table according to A.
- the UE uses a bit value b (0) b (1) using a PUCCH resource n (1) PUCCH selected from A PUCCH resources (n (1) PUCCH, j ) according to Tables 6-8. (0 ⁇ j ⁇ A-1) (A) ⁇ 2,3,4 ⁇ ).
- the UE determines A PUCCH resources (n (1) PUCCH, j ) associated with HARQ-ACK (j) (0 ⁇ j ⁇ A-1) as follows.
- n CCE represents the smallest CCE index of CCE (s) used for PDCCH transmission, and N (1) PUCCH is a constant set by a higher layer (eg, Radio Resource Control, RRC).
- the PUCCH resource n (1) PUCCH, j is set by an upper layer (eg, RRC).
- RRC an upper layer
- the base station informs the UE of the PUCCH resource candidate set through the RRC message, and indicates one PUCCH resource of the PUCCH resource candidate set through the TPC field of the SPS activation PDCCH.
- the PUCCH resource n (1) PUCCH, j is set by an upper layer (eg, RRC).
- the SCell is set to a transmission mode supporting up to two transport blocks
- the PUCCH resource n (1) PUCCH, j + 1 is set by an upper layer (eg, RRC).
- the base station informs the UE of the PUCCH resource candidate set through the RRC message, and indicates one or a pair of PUCCH resources of the PUCCH resource candidate set through the TPC field of the PDCCH.
- PF1-fallback may be applied based on the TDD SCell SF configuration in terms of HARQ-ACK feedback, but it is inefficient to apply CHsel even in SF that cannot actually receive a downlink signal. Therefore, PF1-fallback is applied based on the actual UL-DL configuration (ie, SIB-cfg) of the TDD SCell, not SF configuration from the HARQ-ACK feedback point of view.
- SIB-cfg a UL-DL configuration set through a System Information Block (SIB) or an RRC message.
- ACK / NACK information are respectively BPSK (Binary Phase Shift Keying) and Modulated according to a Quadrature Phase Shift Keying (QPSK) modulation scheme, one ACK / NACK modulation symbol is generated (d 0 ).
- the corresponding bit is given as 1 and a negative ACK (NACK).
- NACK negative ACK
- Table 9 shows a modulation table defined for PUCCH formats 1a and 1b in legacy LTE.
- PF1-Fallback may be particularly effective when TxD (Transmit Diversity) is configured for CHsel based HARQ-ACK PUCCH transmission.
- the (additional) PUCCH resource for TxD based HARQ-ACK transmission in current single cell FDD is implicitly allocated from DL grant PDCCH transmission resource, while the (additional) PUCCH resource for TxD based transmission in CA with CHsel configured is RRC signaling.
- Another advantage of applying PF1-fallback to SF in which the TDD SCell is set to UL in the same situation may include simultaneous transmission of HARQ-ACK based on FDD CHsel and (positive) SR.
- the HARQ-ACK state is not added to the PUCCH resource (hereinafter, referred to as SR PUCCH resource) allocated for SR use without any additional signal processing. Map and send as is. This is because the positive / negative SR is determined only by the presence or absence of signal transmission on the SR PUCCH resource (ie, On-Off Keying, OOF).
- the cell-by-cell spatial bundling includes a method of generating one (eg, 1-bit) bundled HARQ-ACK response by taking a logical AND operation on all TB / CW-specific HARQ-ACK responses in a cell. Therefore, when applying the PF1-fallback, it is possible to ensure / guarantee the DL throughput performance more effective from the terminal point of view.
- 11 to 12 illustrate a HARQ-ACK feedback process in the FDD PCell-TDD SCell CA. The figure is described from the viewpoint of the terminal and the corresponding operation may be performed in the base station.
- an FDD PCell-TDD SCell CA may be configured for a UE (S1102), and PUCCH format 1b with channel selection may be configured for HARQ-ACK feedback (S1104).
- SIB-cfg of the TDD SCell is UD-cfg # 1 (see Table 1). Since the PCell is an FDD cell, the FDD DL HARQ timing is applied not only to the FDD PCell but also to the TDD SCell. Accordingly, when the UE receives a downlink signal (eg, PDSCH, PDCCH indicating SPS release) requesting HARQ-ACK feedback in subframe SF #nk (S1106), the SF receives HARQ-ACK feedback. Transmit from #n (S1108 ⁇ s1110).
- the UE may apply the FDD-FDD CA CHsel scheme for HARQ-ACK feedback transmission (S1108, S1208).
- the TDD SCell is U in SF # n-k
- the UE may apply the PF1-fallback scheme for transmitting HARQ-ACK feedback (S1110 and S1210).
- S may be treated as D in terms of HARQ-ACK feedback.
- a method for generating HARQ-ACK feedback information and a method for allocating PUCCH resources, a method for allocating PUCCH resources for additional antennas in multi-antenna transmission, and a method for generating HARQ-ACK feedback and HARQ-ACK feedback in simultaneous simultaneous (positive) SR transmission The back is different.
- the basic UL-DL configuration (UD-cfg) of the TDD cell (or CC) is (semi-) statically configured using higher layer signaling (eg, SIB), and then the operation of the corresponding cell (or CC) is performed.
- a method of dynamically reconfiguring / modifying UD-cfg using lower layer signaling (eg, L1 (Layer1) signaling (eg, PDCCH)) has been considered.
- the base UD-cfg is called SIB-cfg
- the operational UD-cfg is called actual-cfg.
- Subframe configuration according to UD-cfg is set based on Table 1.
- the base station may provide additional DL resources to the eIMTA terminal by not intentionally scheduling / setting an UL signal that may be transmitted from the legacy terminal through the corresponding U.
- the actual-cfg may be selectively determined only among UD-cfg (including SIB-cfg) including all D's on the SIB-cfg. That is, the UD-cfg in which all Ds are placed in the D position on the SIB-cfg may be determined as actual-cfg, but the UD-cfg in which the U is disposed in the D position in the SIB-cfg cannot be determined as the actual-cfg.
- a reference UD-cfg (hereinafter, D-ref-cfg) may be separately set by a higher layer (signaling) to set HARQ timing (eg, HARQ-ACK feedback transmission timing) for DL scheduling.
- the actual-cfg may be selectively determined only among UD-cfg (including D-ref-cfg) including all U on the D-ref-cfg. Therefore, the UD-cfg in which D is placed at the U position on the D-ref-cfg cannot be determined as the actual-cfg.
- D-ref-cfg may be set to UD-cfg including all Ds on possible actual-cfg candidates
- SIB-cfg may be set to UD-cfg including all U on possible actual-cfg candidates. That is, D-ref-cfg may be set to D superset UD-cfg for possible actual-cfg candidates, and SIB-cfg may be set to U superset UD-cfg for possible actual-cfg candidates.
- a reference UD-cfg (hereinafter, U-ref-cfg) of HARQ timing (eg, UG / PUSCH / PHICH transmission timing) for UL scheduling may be set to SIB-cfg.
- U on D-ref-cfg may be considered fixed U and D on SIB-cfg may be considered fixed D.
- SIB-cfg / D-ref-cfg has been set up by higher layer (signaling), among the UD-cfg (s) that contain all of D on SIB-cfg and all of U on D-ref-cfg
- One can be set to actual-cfg by L1 signaling.
- FIG. 13 illustrates a case where SF # 4 is reset to D using actual-cfg (UD-cfg # 4) under the conditions of Table 10.
- Table 12 shows all possible flexible U (hatches) per SIB-cfg.
- the actual flexible U is given as a subset of the hatching parts according to D-ref-cfg.
- a CHsel scheme may be configured for HARQ-ACK feedback in a state where the TDD SCell is configured to operate based on the eIMTA method.
- it may be considered to apply the PF1-fallback scheme to the SF in which the TDD SCell is set to UL based on the SIB-cfg.
- certain UL SFs eg, flexible U
- SIB-cfg may be dynamically changed to DL SFs based on actual-cfg reset, which is desirable in terms of HARQ-ACK feedback configuration / transmission corresponding to CA. You can't.
- the PF1-fallback method it may be considered to apply the PF1-fallback method to the SF in which the TDD SCell is set to U based on the actual-cfg.
- an L1 signal eg PDCCH
- the UL / DL SF configuration (hence the SF-specific CHsel or PF1-fallback) Inconsistency between the terminal and the base station for the performance degradation may be caused.
- the base station may operate based on the actual transmitted actual-cfg, and the terminal may operate in the state / assumed SIB-cfg as the actual-cfg.
- the TDD SCell is UL based on the D-ref-cfg.
- the PF1-fallback method CHsel-based method for the other SFs
- the PF1-fallback method may be applied only to SF with fixed U
- the FDD-FDD CA CHsel method may be applied to other SFs.
- the PF1-fallback method and the CHsel method may be selectively applied depending on whether the corresponding SF is a fixed U or a flexible U. If the PF1-fallback method is applied based on the D-ref-cfg, the CHsel method is applied to the flexible U that is not reset to D, and thus there may be an inefficient part in securing / guaranteing DL throughput and allocating PUCCH resources.
- the HARQ-ACK response to the flexible U may be treated as NACK / DTX.
- NACK / DTX stands for NACK or DTX.
- FIG. 14 illustrates a HARQ-ACK feedback process in an FDD PCell-TDD SCell CA according to the present invention. The figure is described from the viewpoint of the terminal and the corresponding operation may be performed in the base station. It is assumed that the TDD SCell is configured to perform an eIMTA operation.
- an FDD PCell-TDD SCell CA may be configured for a UE (S1402), and PUCCH format 1b with channel selection may be configured for HARQ-ACK feedback (S1404).
- an eIMTA operation may be configured for the TDD SCell.
- the terminal may be configured from the base station to the CA configuration information (eg, cell configuration information), HARQ-ACK feedback setting information (eg, HARQ-ACK feedback method, PUCCH resources), eIMTA configuration information (eg, eIMTA ON / OFF, D- ref-cfg indication information) and the like may be received through higher layer (eg, RRC) signaling.
- CA configuration information eg, cell configuration information
- HARQ-ACK feedback setting information eg, HARQ-ACK feedback method, PUCCH resources
- eIMTA configuration information eg, eIMTA ON / OFF, D- ref-cfg indication information
- the SIB-cfg of the TDD SCell is UD-cfg # 1 (see Table 1). Since the PCell is an FDD cell, the FDD DL HARQ timing is applied not only to the FDD PCell but also to the TDD SCell. Accordingly, when the UE receives a downlink signal (eg, PDSCH, PDCCH indicating SPS release) requesting HARQ-ACK feedback in subframe SF #nk (S1406), the SF receives HARQ-ACK feedback. Transmit at #n (S1408 to s1410).
- a downlink signal eg, PDSCH, PDCCH indicating SPS release
- the UE may apply the FDD-FDD CA CHsel scheme for HARQ-ACK feedback transmission (S1408).
- the UE may apply the PF1-fallback scheme for transmitting HARQ-ACK feedback (S1410).
- whether the TDD SCell is D or U in SF # n-k is determined based on the D-ref-cfg. That is, the PF1-fallback method is applied only to the SF with U fixed on the TDD SCell, and the CHsel method is applied to the other SFs.
- S may be treated as D in terms of HARQ-ACK feedback.
- a method for generating HARQ-ACK feedback information and a method for allocating PUCCH resources, a method for allocating PUCCH resources for additional antennas in multi-antenna transmission, and a method for generating HARQ-ACK feedback and HARQ-ACK feedback in simultaneous simultaneous (positive) SR transmission The back is different.
- the PF1-fallback method is applied to the SF in which the TDD SCell is set to U based on the D-ref-cfg. May be implicitly allocated from the first CCE index n CCE (eg, a PUCCH resource index linked to n CCE +1).
- n CCE eg, a PUCCH resource index linked to n CCE +1.
- additional PUCCH resources for TxD transmission may be explicitly allocated through RRC signaling.
- the HARQ-ACK on the SR PUCCH resource State can be mapped / transmitted as is (without applying spatial bundling).
- the CHsel-based scheme is applied to the remaining SFs, the bundled HARQ-ACK state configured by taking spatial bundling for each cell may be mapped / transmitted on the SR PUCCH resource.
- the proposed method is similar to the CA situation between the FDD cell and the eIMTA-based TDD cell, as well as when the eIMTA operation of resetting all or some UL SFs on the UL carrier to DL SF (and / or special SF) is performed in a single cell FDD situation. Can be applied.
- FIG. 15 illustrates a base station and a terminal that can be applied to the present invention.
- a wireless communication system includes a base station (BS) 110 and a terminal (UE) 120.
- BS base station
- UE terminal
- the wireless communication system includes a relay
- the base station or the terminal may be replaced with a relay.
- Base station 110 includes a processor 112, a memory 114, and a radio frequency (RF) unit 116.
- the processor 112 may be configured to implement the procedures and / or methods proposed in the present invention.
- the memory 114 is connected to the processor 112 and stores various information related to the operation of the processor 112.
- the RF unit 116 is connected with the processor 112 and transmits and / or receives a radio signal.
- the terminal 120 includes a processor 122, a memory 124, and a radio frequency unit 126.
- the processor 122 may be configured to implement the procedures and / or methods proposed by the present invention.
- the memory 124 is connected with the processor 122 and stores various information related to the operation of the processor 122.
- the RF unit 126 is connected with the processor 122 and transmits and / or receives a radio signal.
- each component or feature is to be considered optional unless stated otherwise.
- Each component or feature may be embodied in a form that is not combined with other components or features. It is also possible to combine some of the components and / or features to form an embodiment of the invention.
- the order of the operations described in the embodiments of the present invention may be changed. Some components or features of one embodiment may be included in another embodiment or may be replaced with corresponding components or features of another embodiment. It is obvious that the claims may be combined to form an embodiment by combining claims that do not have an explicit citation relationship in the claims or as new claims by post-application correction.
- a base station may in some cases be performed by an upper node thereof. That is, it is obvious that various operations performed for communication with the terminal in a network including a plurality of network nodes including a base station may be performed by the base station or other network nodes other than the base station.
- a base station may be replaced by terms such as a fixed station, a Node B, an eNode B (eNB), an access point, and the like.
- the terminal may be replaced with terms such as a user equipment (UE), a mobile station (MS), a mobile subscriber station (MSS), and the like.
- Embodiments according to the present invention may be implemented by various means, for example, hardware, firmware, software, or a combination thereof.
- an embodiment of the present invention may include one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), FPGAs ( field programmable gate arrays), processors, controllers, microcontrollers, microprocessors, and the like.
- ASICs application specific integrated circuits
- DSPs digital signal processors
- DSPDs digital signal processing devices
- PLDs programmable logic devices
- FPGAs field programmable gate arrays
- processors controllers, microcontrollers, microprocessors, and the like.
- an embodiment of the present invention may be implemented in the form of a module, procedure, function, etc. that performs the functions or operations described above.
- the software code may be stored in a memory unit and driven by a processor.
- the memory unit may be located inside or outside the processor, and may exchange data with the processor by various known means.
- the present invention can be used in a terminal, base station, or other equipment of a wireless mobile communication system.
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Abstract
Description
Uplink-downlink configuration | Downlink-to-Uplink Switch point periodicity | Subframe number | |||||||||
0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | ||
0 | 5ms | D | S | U | U | U | D | S | U | U | U |
1 | 5ms | D | S | U | U | D | D | S | U | U | D |
2 | 5ms | D | S | U | D | D | D | S | U | D | D |
3 | 10ms | D | S | U | U | U | D | D | D | D | D |
4 | 10ms | D | S | U | U | D | D | D | D | D | D |
5 | 10ms | D | S | U | D | D | D | D | D | D | D |
6 | 5ms | D | S | U | U | U | D | S | U | U | D |
PDCCH format | Number of CCEs (n) | Number of REGs | Number of PDCCH bits |
0 | 1 | 9 | 72 |
1 | 2 | 8 | 144 |
2 | 4 | 36 | 288 |
3 | 5 | 72 | 576 |
PDCCH format | Number of CCEs (n) | Number of candidates in common search space | Number of candidates in dedicated search space |
0 | 1 | - | 6 |
1 | 2 | - | 6 |
2 | 4 | 4 | 2 |
3 | 8 | 2 | 2 |
HARQ-ACK(0) | HARQ-ACK(1) | n(1) PUCCH | b(0)b(1) |
ACK | ACK | n(1) PUCCH,1 | 1,1 |
ACK | NACK/DTX | n(1) PUCCH,0 | 1,1 |
NACK/DTX | ACK | n(1) PUCCH,1 | 0,0 |
NACK | NACK/DTX | n(1) PUCCH,0 | 0,0 |
DTX | NACK/DTX | No transmission |
HACK-ACK(0) | HARQ-ACK(1) | HARQ-ACK(2) | n(1) PUCCH | b(0)b(1) |
ACK | ACK | ACK | n(1) PUCCH,1 | 1,1 |
ACK | NACK/DTX | ACK | n(1) PUCCH,1 | 1,0 |
NACK/DTX | ACK | ACK | n(1) PUCCH,1 | 0,1 |
NACK/DTX | NACK/DTX | ACK | n(1) PUCCH,2 | 1,1 |
ACK | ACK | NACK/DTX | n(1) PUCCH,0 | 1,1 |
ACK | NACK/DTX | NACK/DTX | n(1) PUCCH,0 | 1,0 |
NACK/DTX | ACK | NACK/DTX | n(1) PUCCH,0 | 0,1 |
NACK/DTX | NACK/DTX | NACK | n(1) PUCCH,2 | 0,0 |
NACK | NACK/DTX | DTX | n(1) PUCCH,0 | 0,0 |
NACK/DTX | NACK | DTX | n(1) PUCCH,0 | 0,0 |
DTX | DTX | DTX | No transmission |
HARQ-ACK(0) | HARQ-ACK(1) | HARQ-ACK(2) | HARQ-ACK(0) | n(1) PUCCH | b(0)b(1) |
ACK | ACK | ACK | ACK | n(1) PUCCH,1 | 1,1 |
ACK | NACK/DTX | ACK | ACK | n(1) PUCCH,2 | 0,1 |
NACK/DTX | ACK | ACK | ACK | n(1) PUCCH,1 | 0,1 |
NACK/DTX | NACK/DTX | ACK | ACK | n(1) PUCCH,3 | 1,1 |
ACK | ACK | ACK | NACK/DTX | n(1) PUCCH,1 | 1,0 |
ACK | NACK/DTX | ACK | NACK/DTX | n(1) PUCCH,2 | 0,0 |
NACK/DTX | ACK | ACK | NACK/DTX | n(1) PUCCH,1 | 0,0 |
NACK/DTX | NACK/DTX | ACK | NACK/DTX | n(1) PUCCH,3 | 1,0 |
ACK | ACK | NACK/DTX | ACK | n(1) PUCCH,2 | 1,1 |
ACK | NACK/DTX | NACK/DTX | ACK | n(1) PUCCH,2 | 1,0 |
NACK/DTX | ACK | NACK/DTX | ACK | n(1) PUCCH,3 | 0,1 |
NACK/DTX | NACK/DTX | NACK/DTX | ACK | n(1) PUCCH,3 | 0,0 |
ACK | ACK | NACK/DTX | NACK/DTX | n(1) PUCCH,0 | 1,1 |
ACK | NACK/DTX | NACK/DTX | NACK/DTX | n(1) PUCCH,0 | 1,0 |
NACK/DTX | ACK | NACK/DTX | NACK/DTX | n(1) PUCCH,0 | 0,1 |
NACK/DTX | NACK | NACK/DTX | NACK/DTX | n(1) PUCCH,0 | 0,0 |
NACK | NACK/DTX | NACK/DTX | NACK/DTX | n(1) PUCCH,0 | 0,0 |
DTX | DTX | NACK/DTX | NACK/DTX | No transmission |
PUCCH 포맷 | b(0),...,b(Mbit-1) | d(0) |
1a | 0 | 1 |
1 | -1 | |
1b | 00 | 1 |
01 | -j | |
10 | j | |
11 | -1 |
Claims (12)
- 무선 통신 시스템에서 단말이 HARQ-ACK(Hybrid Automatic Repeat reQuest Acknowledgement) 정보를 전송하는 방법에 있어서,FDD(Frequency Division Duplex) PCell(Primary Cell)과 TDD(Time Division Duplex) SCell(Secondary Cell)을 구성하는 단계;L1(Layer 1) 신호를 통해 수신된 패턴 지시 정보에 따라 상기 TDD SCell에 제1 UL-DL SF(Uplink-Downlink subframe) 패턴을 설정하는 단계;상기 제1 UL-DL SF 패턴을 기준으로 상기 TDD SCell의 전송 방향이 UL인 SF와 관련된 HARQ-ACK 정보를 SR(Scheduling Request) PUCCH(Physical Uplink Control Channel)를 통해 전송하는 단계를 포함하고,HARQ-ACK 피드백과 관련하여 상기 TDD SCell에 설정된 참조 UL-DL SF 패턴을 기준으로 상기 SF에서 상기 TDD SCell의 전송 방향이 DL인 경우, 상기 HARQ-ACK 정보는 상기 PCell 및 SCell에 대한 HARQ-ACK 응답을 모두 포함하고,상기 참조 UL-DL SF 패턴을 기준으로 상기 SF에서 상기 TDD SCell의 전송 방향이 UL인 경우, 상기 HARQ-ACK 정보는 상기 PCell에 대한 HARQ-ACK 응답만을 포함하는 방법.
- 제1항에 있어서,상기 HARQ-ACK 정보는 상기 PCell 및 SCell에 대한 HARQ-ACK 응답을 모두 포함하는 경우, 상기 PCell 및 SCell에 대한 HARQ-ACK 응답은 셀-별로 번들링된 HARQ-ACK 응답을 포함하는 방법.
- 제1항에 있어서,상기 HARQ-ACK 정보는 상기 PCell에 대한 HARQ-ACK 응답만을 포함하는 경우, 상기 HARQ-ACK 정보는 상기 PCell의 하나 이상의 전송블록에 대해 전송블록-별로 생성된 개별 HARQ-ACK 응답을 포함하는 방법.
- 제1항에 있어서,상기 TDD SCell에 설정된 참조 UL-DL SF 패턴을 기준으로 상기 SF에서 상기 TDD SCell의 전송 방향이 DL인 경우, 상기 SF는 전송 방향이 UL로부터 DL로 재설정될 수 있는 SF를 나타내는 방법.
- 제1항에 있어서,상기 TDD SCell에 설정된 참조 UL-DL SF 패턴을 기준으로 상기 SF에서 상기 TDD SCell의 전송 방향이 UL인 경우, 상기 SF는 전송 방향이 UL로부터 DL로 재설정될 수 없는 SF를 나타내는 방법.
- 제1항에 있어서,상기 SR PUCCH는 PUCCH 포맷 1a 또는 PUCCH 포맷 1b를 포함하는 방법.
- 무선 통신 시스템에서 HARQ-ACK(Hybrid Automatic Repeat reQuest Acknowledgement) 정보를 전송하도록 구성된 단말에 있어서,RF(Radio Frequency) 모듈; 및프로세서를 포함하고, 상기 프로세서는,FDD(Frequency Division Duplex) PCell(Primary Cell)과 TDD(Time Division Duplex) SCell(Secondary Cell)을 구성하고,L1(Layer 1) 신호를 통해 수신된 패턴 지시 정보에 따라 상기 TDD SCell에 제1 UL-DL SF(Uplink-Downlink subframe) 패턴을 설정하며,상기 제1 UL-DL SF 패턴을 기준으로 상기 TDD SCell의 전송 방향이 UL인 SF와 관련된 HARQ-ACK 정보를 SR(Scheduling Request) PUCCH(Physical Uplink Control Channel)를 통해 전송하도록 구성되고,HARQ-ACK 피드백과 관련하여 상기 TDD SCell에 설정된 참조 UL-DL SF 패턴을 기준으로 상기 SF에서 상기 TDD SCell의 전송 방향이 DL인 경우, 상기 HARQ-ACK 정보는 상기 PCell 및 SCell에 대한 HARQ-ACK 응답을 모두 포함하고,상기 참조 UL-DL SF 패턴을 기준으로 상기 SF에서 상기 TDD SCell의 전송 방향이 UL인 경우, 상기 HARQ-ACK 정보는 상기 PCell에 대한 HARQ-ACK 응답만을 포함하는 단말.
- 제7항에 있어서,상기 HARQ-ACK 정보는 상기 PCell 및 SCell에 대한 HARQ-ACK 응답을 모두 포함하는 경우, 상기 PCell 및 SCell에 대한 HARQ-ACK 응답은 셀-별로 번들링된 HARQ-ACK 응답을 포함하는 단말.
- 제7항에 있어서,상기 HARQ-ACK 정보는 상기 PCell에 대한 HARQ-ACK 응답만을 포함하는 경우, 상기 HARQ-ACK 정보는 상기 PCell의 하나 이상의 전송블록에 대해 전송블록-별로 생성된 개별 HARQ-ACK 응답을 포함하는 단말.
- 제7항에 있어서,상기 TDD SCell에 설정된 참조 UL-DL SF 패턴을 기준으로 상기 SF에서 상기 TDD SCell의 전송 방향이 DL인 경우, 상기 SF는 전송 방향이 UL로부터 DL로 재설정될 수 있는 SF를 나타내는 단말.
- 제7항에 있어서,상기 TDD SCell에 설정된 참조 UL-DL SF 패턴을 기준으로 상기 SF에서 상기 TDD SCell의 전송 방향이 UL인 경우, 상기 SF는 전송 방향이 UL로부터 DL로 재설정될 수 없는 SF를 나타내는 단말.
- 제7항에 있어서,상기 SR PUCCH는 PUCCH 포맷 1a 또는 PUCCH 포맷 1b를 포함하는 단말.
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JP2017509732A JP2017531364A (ja) | 2014-09-01 | 2015-09-01 | 無線通信システムにおける無線信号送受信方法及び装置 |
US15/504,618 US20170237546A1 (en) | 2014-09-01 | 2015-09-01 | Method and device for transmitting and receiving wireless signal in wireless communication system |
KR1020177001164A KR20170053610A (ko) | 2014-09-01 | 2015-09-01 | 무선 통신 시스템에서 무선 신호 송수신 방법 및 장치 |
RU2017106753A RU2658340C1 (ru) | 2014-09-01 | 2015-09-01 | Способ и устройство для передачи и приема беспроводного сигнала в системе беспроводной связи |
EP15837803.4A EP3190739A4 (en) | 2014-09-01 | 2015-09-01 | Method and device for transmitting and receiving wireless signal in wireless communication system |
CN201580046893.6A CN106797291A (zh) | 2014-09-01 | 2015-09-01 | 在无线通信系统中发送和接收无线信号的方法和设备 |
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JP7115843B2 (ja) * | 2017-12-13 | 2022-08-09 | シャープ株式会社 | 端末装置、基地局装置、通信方法、および、集積回路 |
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CN110831172A (zh) * | 2018-08-07 | 2020-02-21 | 维沃移动通信有限公司 | 确定方法、终端及网络设备 |
CN110876201B (zh) * | 2018-09-04 | 2022-10-11 | 上海华为技术有限公司 | 一种上行传输方法和装置 |
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JP2017531364A (ja) | 2017-10-19 |
KR20170053610A (ko) | 2017-05-16 |
US20170237546A1 (en) | 2017-08-17 |
CN106797291A (zh) | 2017-05-31 |
EP3190739A4 (en) | 2018-04-25 |
RU2658340C1 (ru) | 2018-06-20 |
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