WO2012108685A2 - Procédé et appareil d'attribution d'une ressource ack/nack, et procédé de transmission d'un signal ack/nack l'utilisant - Google Patents

Procédé et appareil d'attribution d'une ressource ack/nack, et procédé de transmission d'un signal ack/nack l'utilisant Download PDF

Info

Publication number
WO2012108685A2
WO2012108685A2 PCT/KR2012/000922 KR2012000922W WO2012108685A2 WO 2012108685 A2 WO2012108685 A2 WO 2012108685A2 KR 2012000922 W KR2012000922 W KR 2012000922W WO 2012108685 A2 WO2012108685 A2 WO 2012108685A2
Authority
WO
WIPO (PCT)
Prior art keywords
transmission
resource
ari
transmitted
terminal
Prior art date
Application number
PCT/KR2012/000922
Other languages
English (en)
Korean (ko)
Other versions
WO2012108685A3 (fr
Inventor
박동현
Original Assignee
주식회사 팬택
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020110012097A external-priority patent/KR20120091960A/ko
Priority claimed from KR1020110017457A external-priority patent/KR20120097907A/ko
Application filed by 주식회사 팬택 filed Critical 주식회사 팬택
Publication of WO2012108685A2 publication Critical patent/WO2012108685A2/fr
Publication of WO2012108685A3 publication Critical patent/WO2012108685A3/fr

Links

Images

Classifications

    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/54—Signalisation aspects of the TPC commands, e.g. frame structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames

Definitions

  • the present invention relates to wireless communication, and more particularly, to a wireless communication system supporting multiple carriers.
  • Wireless communication systems generally use one bandwidth for data transmission.
  • second generation wireless communication systems use a bandwidth of 200 KHz-1.25 MHz
  • third generation wireless communication systems use a bandwidth of 5 MHz-10 MHz.
  • LTE Long Term Evolution
  • 3GPP 3rd Generation Partnership Project
  • An object of the present invention is to provide a method for effectively allocating a transmission resource for transmitting an ACK / NACK signal for a single carrier in a single carrier (TDD) single carrier system.
  • An object of the present invention is to provide a method for effectively allocating transmission resources when a UE transmits a HARQ ACK / NACK response by applying SORTD in a single carrier (TDD) single carrier system. do.
  • An object of the present invention is to provide a preliminary method for transmitting a HARQ signal by a terminal when HARQ transmission is difficult to be performed in a manner set between the terminal and the base station.
  • the present invention relates to a resource allocation method of a base station in a time division duplex (TDD) system using a single carrier, and according to this, uplink control to which Discrete Fourier Transform-Spreading-Orthogonal Frequency-Division Multiplexing (DFT-S-OFDM) is applied.
  • DFT-S-OFDM Discrete Fourier Transform-Spreading-Orthogonal Frequency-Division Multiplexing
  • the resource mapping table may be configured to transmit the same number of transmission resources as the number of transmission antennas of the terminal by the resource indicator.
  • the present invention also relates to a method for transmitting a HARQ response signal of a terminal in a TDD (Time Division Duplex) system using a single carrier, and accordingly, according to Discrete Fourier Transform-Spreading-Orthogonal Frequency-Division Multiplexing ) Acquires a transmission resource indicated by the resource indicator as a transmission resource to be used for transmission of the uplink control channel on a resource mapping table configured of a resource of an uplink control channel format to which the base station is applied, and uses the obtained transmission resource to transmit a HARQ response signal to the base station.
  • the resource indicator is transmitted from the base station using a power control field transmitted on the control channel of the downlink subframe, and the resource mapping table allocates the same number of transmission resources as the number of transmit antennas of the terminal by the resource indicator. It may be configured to.
  • the present invention relates to a method of transmitting a HARQ signal of a terminal, the method comprising: determining whether a resource allocation indicator for allocating a transmission resource to a downlink subframe associated with an uplink subframe to transmit the HARQ signal is received; If it is determined that the resource allocation indicator has not been received, when dynamic scheduling is applied, resources are allocated based on the control channel element index on the control channel in the received downlink subframe, and static scheduling is applied. If so, the step of allocating resources indicated by the resource allocation indicator transmitted on the downlink control channel with the static scheduling enabled and transmitting the HARQ signal using the allocated resources.
  • the resource allocation indicator when receiving a resource allocation indicator for allocating the transmission resources to the downlink subframe associated with the uplink subframe to transmit the HARQ signal, the resource allocation indicator may be allocated to transmit the HARQ signal.
  • the step of allocating a resource may include determining whether to transmit a HARQ signal by applying SORTD even if a resource allocation indicator for allocating a transmission resource is received in a downlink subframe associated with an uplink subframe to which the HARQ signal is to be transmitted. In addition, if it is determined that the SORTD is applied, a plurality of transmission resources may be allocated, and when using a single antenna that does not apply the SORTD, one transmission resource may be allocated.
  • whether to apply the SORTD is pre-set between the terminal and the base station, or information for determining whether to apply the SORTD may be sheared from the base station to the terminal through higher layer signaling.
  • the HARQ signal is transmitted in the same transmission method as that of transmitting a HARQ signal.
  • the HARQ signal transmission step when the resource allocation indicator for allocating a transmission resource to a downlink subframe associated with an uplink subframe to transmit the HARQ signal is received, the HARQ signal may be allocated. The HARQ signal may be transmitted in the same transmission method as that of transmitting.
  • the resource allocated by the UE may be PUCCH format 1a or PUCCH format 1b.
  • the method may further include performing time domain bundling and / or spatial bundling when the HARQ signal to be transmitted exceeds a size that can be transmitted through the allocated resource.
  • the method may further include performing time domain bundling and / or spatial bundling.
  • the present invention provides a method for allocating an HARQ resource of a base station, when the terminal does not receive a resource allocation indicator for allocating a transmission resource to a downlink subframe associated with an uplink subframe to transmit the HARQ signal, the terminal receives the HARQ signal.
  • the resource to be explicitly allocated may be allocated by a resource allocation indicator transmitted by utilizing a bit to be used in a transmission power control command transmitted on a control channel for activating static scheduling.
  • the transmission resources may be allocated the required number according to the HARQ transmission scheme of the terminal, the HARQ transmission scheme of the terminal, resource allocation indicator for allocating the transmission resources to the downlink subframe associated with the uplink subframe to transmit the HARQ signal It may be the same as the transmission method when the terminal receives.
  • a transmission resource for transmitting an ACK / NACK signal for a single carrier can be effectively allocated.
  • radio resources can be effectively utilized by dedicating resources allocated to control signals that are redundantly transmitted.
  • a transmission resource can be effectively allocated.
  • the terminal may transmit the HARQ signal to the base station through a preliminary method.
  • FIG. 1 illustrates uplink-downlink configuration 5 in a TDD system using a single carrier.
  • FIG. 2 illustrates uplink-downlink configuration 1 in a TDD system using a single carrier.
  • FIG. 3 schematically illustrates an example of specifying a downlink subframe for transmitting ARI in uplink-downlink configuration 2 in a TDD system using a single carrier.
  • FIG. 4 schematically illustrates an example of configuring an ARI window for uplink-downlink configuration 0 in a TDD system using a single carrier.
  • FIG. 5 schematically illustrates an example of configuring an ARI window for uplink-downlink configuration 1 in a TDD system using a single carrier.
  • FIG. 6 is a diagram schematically illustrating an example of performing time domain bundling to transmit an HARQ ACK / NACK signal using PUCCH format 1b.
  • FIG. 7 is a diagram schematically illustrating an example of performing spatial bundling and time domain bundling to transmit an HARQ ACK / NACK signal using PUCCH format 1a.
  • FIG. 8 is a diagram schematically illustrating an example of a normal mode when an SPS is activated.
  • FIG. 9 is a diagram schematically illustrating an example in which a contrast mode is applied by only transmitting major carriers in which an SPS is transmitted in one downlink subframe.
  • FIG. 10 is a diagram schematically illustrating a contrast mode applied when there is a subframe and / or a component carrier on which dynamic scheduling is performed.
  • FIG. 11 is a diagram schematically illustrating an example in which a resource allocation scheme may be maintained.
  • FIG. 12 is a flowchart schematically illustrating an operation of a base station in a TDD system using a single carrier to which the present invention is applied.
  • FIG. 13 is a flowchart schematically illustrating an operation of a terminal in a TDD system using a single carrier, to which the present invention is applied.
  • FIG. 14 is a diagram schematically illustrating an operation of a terminal when a contrast mode is applied according to the present invention.
  • 15 is a block diagram schematically illustrating an example of a configuration of a base station and a terminal in a system to which the present invention is applied.
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single Carrier-FDMA
  • OFDM-FDMA OFDM-TDMA
  • various multiple access schemes such as OFDM-CDMA may be used.
  • CA Carrier Aggregation
  • the number of carriers aggregated between the downlink and the uplink may be set differently, and the size (ie, bandwidth) of the component carriers may be different.
  • Each component carrier may have a control channel such as a PDCCH, which will be described later, and may or may not be adjacent to each other.
  • the terminal may support one or more carriers according to performance.
  • the CC may be divided into a Primary Component Carrier (PCC) and a Secondary Component Carrier (SCC) according to activation.
  • PCC Primary Component Carrier
  • SCC Secondary Component Carrier
  • the major carriers are always active carriers, and the subcarrier carriers are carriers that are activated / deactivated according to specific conditions. Activation refers to the transmission or reception of traffic data being made or in a ready state.
  • the CA environment refers to a system supporting multi-component carriers (carrier aggregation).
  • a physical downlink control channel may transmit allocation information for resources of other carriers as well as resource allocation in a carrier to which the corresponding PDCCH belongs.
  • the message transmitted on the PDCCH includes a transmission power control (TPC) for controlling uplink transmission power.
  • TPC transmission power control
  • the PDCCH of each carrier may transmit a TPC command for a physical uplink control channel (PUCCH) of the same uplink component carrier.
  • PUCCH physical uplink control channel
  • bits allocated to overlapping TPC fields may be used for transmission of other control information, for example, ACK / NACK resource allocation information.
  • the terminal receiving the downlink data from the base station transmits an ACK (ACKnowledgement) / NACK (Not-ACKnowledgement) response to the base station after a predetermined time elapses or at a certain timing.
  • the downlink data may be transmitted on the PDSCH indicated by the PDCCH.
  • a hybrid automatic repeat request (HARQ) signal for downlink data may be transmitted on the PUCCH.
  • the HARQ ACK / NACK signal becomes ACK information when the downlink data is successfully decoded, and becomes NACK information when the decoding of the downlink data fails.
  • the base station may retransmit the downlink data up to a maximum number of retransmissions.
  • SORTD Spatial Orthogonal Resource Transmit Diversity
  • SORTD may also be applied to each PUCCH format.
  • PUCCH is not only the location of the physical resource block to which the HARQ ACK / NACK signal is transmitted, but also the CS amount ⁇ (n s of the base sequence). , l) and orthogonal sequence index n OC (n s ).
  • the resource index n (1) PUCCH for the HARQ ACK / NACK signal can be obtained as shown in Table 1 below.
  • the resource index n (1) PUCCH is a parameter for determining the physical RB index n PRB , the CS amount ⁇ (n s , l) of the base sequence, and the orthogonal sequence index n OC (n s ).
  • the HARQ ACK / NACK signal for the PDSCH transmitted in the nth subframe is the first control channel element (CCE) index n CCE of the PDCCH transmitted in the nth subframe and the higher layer signaling. is transmitted in the n + 4th subframe using resource index n (1) PUCCH , which is the sum of the value N (1) PUCCH obtained through signaling) or a separate control channel.
  • N (1) PUCCH is the total number of PUCCH format 1 / 1a / 1b resources required for Semi-Persistent Scheduling (SPS) transmission and Service Request (SR) transmission.
  • SPS Semi-Persistent Scheduling
  • SR Service Request
  • the physical RB index n PRB is determined by the resource index n (1) PUCCH . This is shown in Equation 1 below.
  • the physical RB index n PRB is determined according to the resource index n (1) PUCCH , and the PUCCH corresponding to each m is frequency hopping in units of slots.
  • HARQ ACK / NACK signals for a plurality of downlink component carriers are transmitted through one uplink component carrier.
  • one bit of an ACK / NACK signal is transmitted per one codeword (CW).
  • the HARQ ACK / NACK signal for the downlink is transmitted on the PUCCH.
  • the base station may implicitly allocate the ACK / NACK resource index.
  • Implicitly allocating an ACK / NACK resource index means that the base station allocates a resource index calculated by using n CCE , which means a number of CCEs , as a parameter among at least one CCE constituting the PDCCH of CC # a.
  • n CCE which means a number of CCEs , as a parameter among at least one CCE constituting the PDCCH of CC # a.
  • n CCE which means a number of CCEs
  • the base station may also assign the resource index explicitly.
  • the fact that the base station explicitly allocates the resource index to the terminal means that the resource index of the PUCCH dedicated to the specific terminal is allocated to the terminal through a separate resource allocation indicator from the base station without depending on n CCE . .
  • the separate resource allocation indicator from the base station includes signaling from an upper layer or a physical layer.
  • the resource allocation indicator may be included in the PDCCH as control information or system information. In the present specification, in response to the explicit resource index allocation of the base station, it is expressed as 'explicit resource index acquisition' from the perspective of the terminal.
  • the base station may use 2 bits to transmit the ACK / NACK Resource Indicator (ARI, hereinafter referred to as "ARI") to be used for transmitting the TPC command.
  • ARI is an indicator for explicitly allocating a resource to be used when the terminal transmits a HARQ ACK / NACK signal for downlink.
  • the TPC field of the PDCCH corresponding to the PDSCH on the major carrier may be used as a TPC command
  • the TPC field of the PDCCH corresponding to the PDSCH on the subcarrier may be used as the ARI.
  • a TPC field transmitted on a PDCCH of a specific downlink subframe is used as a TPC command
  • a bit to be allocated to a TPC field on a PDCCH of another downlink subframe is used.
  • ARI can be sent.
  • the ARI mapping table for allocating resources to the ARI may be transmitted to the terminal in advance by higher layer signaling.
  • the ARI mapping table consists of the values indicated by the ARI and the ACK / NACK transmission resources allocated accordingly.
  • the number of HARQ ACK / NACK transmission resources required to configure the ARI mapping table is a transmission mode for the number of component carriers configured through RRC and the number of codewords for each component carrier in a subframe, HARQ It may be determined through the type of the PUCCH format for transmitting the ACK / NACK signal.
  • the number of downlink subframes associated with an uplink subframe may be determined according to the type of PUCCH format for transmitting HARQ ACK / NACK signals.
  • the ARI mapping table can be configured differently according to the number of ACK / NACK transmission resources corresponding to four values that can be represented by a 2-bit ARI. The explicitly allocated resource set and the corresponding ARI value are determined by higher layer signaling. It may be delivered to the terminal in advance.
  • Table 2 shows an embodiment of the ARI mapping table used in the present invention.
  • each N k is a set of resources (for example, ⁇ n ⁇ and n are transmission resources) having one transmission resource that does not overlap each other, and through ARI
  • each N k is a resource set (e.g. ⁇ n1, n2 ⁇ ) having two transmission resources as elements.
  • the resource set indicated by the ARI on the ARI mapping table is allocated to the terminal. For example, when the value of the ARI is '01', transmission resources of resource set N 2 are allocated.
  • HARQ ACK / NACK response of 4 bits or less can transmit the HARQ ACK / NACK signal through the PUCCH format 1b using the channel selection.
  • the channel selection allocates HARQ ACK / NACK resources for downlink by using a table that maps a message to be transmitted, a resource to be used for transmission of the message, and a modulation symbol.
  • the channel selection table may be composed of a combination of a plurality of resource indexes and modulation symbols of the ACK / NACK signal. Since a channel selection can allocate resources necessary for transmitting a signal of up to 4 bits, for an ACK / NACK signal having 4 bits or less, the channel selection table is set according to the value of the number of bits (M) required for transmitting the ACK / NACK signal. Can be configured.
  • the terminal may allocate an ACK / NACK resource and transmit a symbol by using the channel selection table.
  • the format of the table used for channel selection may be delivered to the terminal and the base station in advance by higher layer signaling.
  • the terminal may explicitly obtain an ACK / NACK resource index for constructing a table used for channel selection.
  • Table 3 is an example of a table for channel selection when the M value (the number of HARQ ACK / NACK signals to be transmitted as one symbol value) is three.
  • HARQ-ACK (0) ⁇ HARQ-ACK (3) is an ACK / NACK type for the codeword to determine whether or not normally received (decoded).
  • n (1) PUCCH is a HARQ ACK / NACK resource to be used for transmission using PUCCH format 1b.
  • each ACK / NACK resource constituting the table for channel selection for example, ⁇ n (1) PUCCH, 0 , n (1) PUCCH, 1 , n (1) PUCCH, 2 ⁇ in Table 3 are as described above. Likewise implicitly or explicitly allocated transmission resources.
  • b (0) b (1) is a QPSK symbol of an ACK / NACK signal to be transmitted.
  • N / A that is, in the case of DTX (Discontinuous Transmission)
  • the UE transmits a HARQ ACK / NACK signal. Do not send an ACK / NACK response in the transmitting subframe.
  • the UE When the UE allocates a resource using channel selection, the UE transmits a corresponding transmission symbol using an ACK / NACK transmission resource (n (1) PUCCH ) mapped to an ACK / NACK type corresponding to a decoding result of received PDSCHs.
  • b (0), b (1)) are transmitted on the PUCCH.
  • the value (1,1) of the corresponding symbol (b (0), b (1)) using ACK / NACK resource n (1) PUCCH, 1 ) Is transmitted on the PUCCH.
  • the uplink transmission and the downlink transmission may use a time division duplex (TDD) scheme that is transmitted using different times, or may use a frequency division duplex (FDD) scheme that is transmitted using different frequencies.
  • TDD time division duplex
  • FDD frequency division duplex
  • uplink transmission and downlink transmission are always distinguished in time based on one cell.
  • the base station and the terminal repeat the switching between the transmission mode and the reception mode.
  • a special subframe may be provided to provide a guard time for mode switching between transmission and reception.
  • Table 4 shows configuration of uplink and downlink in TDD mode.
  • the base station and the terminal performs uplink and downlink transmission through seven possible downlink / uplink frame settings.
  • 'D' represents a downlink subframe
  • 'U' represents an uplink subframe
  • 'S' represents the special subframe described above.
  • the UE transmits HARQ ACK / NACK for the PDSCH received in subframe n-4 in subframe n.
  • the UE transmits HARQ ACK / NACK for the PDSCH received in subframe (s) n-k in uplink subframe n.
  • k is an element of K
  • K may be defined by Table 5.
  • subframes in which numbers are written are subframes for performing uplink transmission.
  • the HARQ ACK / ANCK signal for the downlink subframe may be transmitted through an uplink subframe associated with the downlink subframe.
  • the TPC may be transmitted on the PDCCH for power control of the same uplink PUCCH. Therefore, for one PUCCH, an ARI can be transmitted by using bits to be allocated to overlapping TPC fields, and a table for channel selection is constructed using ACK / NACK resources obtained implicitly or explicitly, and using the HARQ An ACK / NACK signal may be transmitted.
  • the plurality of HARQ ACK / NACK signals may be bundled by a logical product operation. That is, when all HARQ ACK / NACK information for the downlink component carrier or the downlink subframe to be bundled is ACK, the ACK may be transmitted as a HARQ ACK / NACK signal representing the bundled ACK / NACK signal. When HARQ ACK / NACK information on at least one CC or subframe is NACK, NACK may be transmitted as a HARQ ACK / NACK signal representing a bundled ACK / NACK signal. In addition, when HARQ ACK / NACK information for at least one CC or subframe is DTX, the DTX may be transmitted as a HARQ ACK / NACK signal representing the bundled ACK / NACK signal.
  • PUCCH format 3 may be used.
  • PUCCH format 3 is a PUCCH format to which Discrete Fourier Transform-Spreading-Orthogonal Frequency-Division Multiplexing (DFT-S-OFDM) is applied, and uses DFT-IFFT and block-spreading.
  • DFT-S-OFDM Discrete Fourier Transform-Spreading-Orthogonal Frequency-Division Multiplexing
  • block-spreading DFT-IFFT and block-spreading.
  • up to 10 bits of information in FDD and up to 20 bits of information in TDD are used as HARQ ACK / NACK signals.
  • HARQ ACK / NACK signals having a maximum length of 20 bits can be transmitted. Therefore, even in the uplink-downlink configuration 5, HARQ ACK / NACK signals can be multiplexed and transmitted. . Even when the payload size of up to 20 bits is exceeded, ACK / NACK signals may be transmitted through spatial bundling.
  • a single carrier for TDD (TDD) using a single carrier may be a CA or TDD system in which a transmission is performed between a base station and a base station that do not support a CA (Carrier Aggregation) environment.
  • CA Carrier Aggregation
  • a method of explicitly allocating a resource of PUCCH format 3 through higher layer signaling such as RRC may be considered.
  • the base station fixedly allocates a predetermined transmission resource through higher layer signaling such as RRC, and the terminal may transmit a HARQ ACK / NACK signal by using the same.
  • the base station can allocate resources in a fixed manner.
  • the base station explicitly allocates resources through higher layer signaling according to the number of transmit antennas applying SORTD. For example, in the case of using two transmit antennas, the base station may allocate two resources of PUCCH format 3 through higher layer signaling, and in the present embodiment, the transmission resources allocated to specific terminals are fixed to specific resources. .
  • resources of PUCCH format 3 of an uplink subframe associated with a downlink subframe are allocated using a resource indicator, for example, an ACK / NACK Resource Indicator (ARI). You can think of how to do it.
  • a resource indicator for example, an ACK / NACK Resource Indicator (ARI).
  • the base station may transmit the ARI by dedicating bits to be allocated to the TPC field transmitted on the PDCCH of the downlink subframe associated with the uplink subframe. From now on , unless otherwise stated, the expression “dedicate a bit to be allocated to a TPC field" is referred to as "using a TPC field”. Also, from now on, the ARI transmitted on the PDCCH of the downlink subframe herein is an ARI transmitted using the TPC field unless otherwise specified.
  • the UE may use the resource indicated by the ARI as a resource of PUCCH format 3 for transmitting HARQ ACK / NACK signals in an uplink subframe associated with a downlink subframe in which the ARI is transmitted.
  • the UE may transmit a HARQ ACK / NACK signal using one PUCCH format 3 resource. Therefore, when one ACK / NACK transmission resource described above is required (Table 2), an ARI mapping table may be configured with a resource of PUCCH format 3. The base station may configure the ARI to indicate a resource of one PUCCH format 3 on the ARI mapping table.
  • SORTD may be applied by allocating a plurality of transmission resources through an ARI.
  • a plurality of transmission resources may be allocated corresponding to the number of transmission antennas to which SORTD is applied.
  • the second case of applying the SORTD to transmit antennas, and assigns the two transmission resources by ARI Correspondingly, if two ACK / NACK transmission resource the ARI mapping table is required (the N k two transmission in Table 2 If you have a resource as an element).
  • the base station may transmit an indication to the terminal through higher layer signaling such as RRC signaling.
  • an uplink subframe and a downlink subframe mean a scheduled subframe.
  • the TPC field on the PDCCH transmitted in at least one downlink subframe is used as a TPC command.
  • An ARI may be transmitted using a TPC field on a PDCCH transmitted in at least one subframe among the remaining downlink subframes.
  • the resource indicated by the ARI may be allocated as a resource of PUCCH format 3 for transmitting HARQ ACK / NACK signals through an uplink subframe associated with a downlink subframe in which the ARI is transmitted.
  • FIG. 1 illustrates uplink-downlink configuration 5 in a TDD system using a single carrier.
  • subframe # 9 of frame # 0 and subframes 0, 1, 3, 4, 5, 6, 7, and 8 of frame # 1 are DL subframes. It is associated with an uplink subframe (subframe 2) of frame # 2.
  • any one of downlink subframes (subframe 9 of frame # 0 and 0, 1, 3, 4, 5, 6, 7, 8 subframes of frame # 1) associated with the uplink subframe may be used as a TPC command for power control of the PUCCH transmitted in the uplink subframe (subframe # 2 of frame # 2).
  • the base station determines downlink subframes (subframe 9 of frame # 0 and 0, 1, 3, 4, 5, and 6 of frame # 1) associated with the uplink subframe (subframe 2 of frame # 2). , 7, 8 subframes), ARI may be transmitted using a TPC field of a PDCCH transmitted on a subframe other than the subframe in which the TPC command is transmitted.
  • the TPC field of a downlink subframe having a value of Downlink Assignment Indicator (DAI) equal to 0 may transmit a TPC command, and may transmit an ARI using another TPC field of another downlink subframe.
  • Downlink Assignment Indicator (DAI) is a 2-bit message transmitted on a PDCCH.
  • a subframe in which a corresponding subframe is assigned to a single uplink subframe and assigned to a subframe among the downlink subframes scheduled for the second time Indicates whether or not it is a frame.
  • the PUCCH transmission power can be adaptively adjusted. For example, in FIG.
  • the base station may transmit the ARI using the TPC field transmitted on the PDCCH in the remaining downlink subframes other than the subframe 9 of the frame # 0.
  • a TPC command may be transmitted in a TPC field of a downlink subframe closest to the associated uplink subframe. This is because the most recent channel state may be reflected with respect to the uplink transmission time.
  • the values indicated by the ARI transmitted in the downlink subframe associated with one uplink subframe may be set to the same value.
  • a UE using a multi-antenna system By transmitting ARI using a TPC field in a downlink subframe other than a downlink subframe that transmits a TPC command, by allocating a plurality of transmission resources through the ARI, a UE using a multi-antenna system applies SORTD to HARQ ACK. It is also possible to transmit a / NACK signal.
  • SORTD When SORTD is applied, a plurality of transmission resources may be allocated corresponding to the number of transmission antennas. For example, the second case of applying the SORTD to transmit antennas, and assigns the two transmission resources by ARI, Correspondingly, if two ACK / NACK transmission resource the ARI mapping table is required (the N k two transmission in Table 2 If you have a resource as an element).
  • all of the values indicated by the ARIs transmitted in the downlink subframes associated with one uplink subframe may be set to the same value. You can also do that.
  • SORTD is applied using two transmit antennas, and when three or more downlink subframes are associated with one uplink subframe, a TPC command is transmitted to a TPC field of a subframe having DAI of 0, and the DAI is Allocates a transmission resource for the first antenna with an ARI transmitted using a TPC field of a subframe of 1, and allocates a transmission resource for a second antenna with an ARI transmitted using the TPC field of a subframe with a DAI of 2. You can do that.
  • the conventionally received TPC command may be reused for the PUCCH transmission of the uplink subframe, or the currently configured PUCCH
  • the transmission power can be maintained. For example, if the conventionally received TPC command was a command to lower the transmission power by 1 dB, when the TPC command is lost in the transmission process, the terminal may reuse the conventional TPC command to lower the transmission power of the PUCCH by 1 dB. In addition, instead of lowering the transmission power of the PUCCH by 1 dB, the terminal may maintain the transmission power of the currently set PUCCH as it is.
  • the PDCCH of the downlink subframe in which the TPC command for the uplink subframe is transmitted is missed, whether to reuse the conventional TPC command or maintain the currently set PUCCH transmission power through higher layer signaling such as RRC It may be determined or may be set in advance in the terminal.
  • SORTD can be applied even when the TDC command does not receive the PDCCH transmitted. In this case, there is no difference from the above-described application method of SORTD except for reusing the previously received TPC command or maintaining the currently set transmission power.
  • the UE When the PDCCH of the downlink subframe in which the TPC command for the uplink subframe is transmitted is received, but the ARI which allocates the resource of PUCCH format 3 does not receive the PDCCH of the downlink subframe, the UE transmits a transmission resource. Can be implicitly assigned.
  • the UE switches the transmission mode to transmit the ACK / NACK signals by bundling the codewords in the time domain for each codeword or by multiplexing HARQ ACK / NACK signals by using a channel selection or the like, and uses an implicitly allocated transmission resource.
  • HARQ ACK / ANCK signal can be transmitted.
  • the UE receives SORTD. It can be applied to transmit the HARQ ACK / NACK signal.
  • the UE in the case of applying SORTD using two transmission antennas, the UE, as described above with respect to Table 1, the first Control Channel Element (CCE) index n CCE of the PDCCH transmitted in the received subframe and the following.
  • CCE Control Channel Element
  • Two transmission resources may be implicitly allocated based on the CCE index n CCE +1. Therefore, the UE can apply SORTD through the two transmission resources obtained.
  • the UE may perform HARQ response even with an implicitly allocated transmission resource by performing bundling for each codeword in the time domain as needed.
  • one downlink subframe is associated with an uplink subframe, as shown in uplink-downlink configuration 0, 1, or 6 of Table 5, the corresponding uplink subframe is originally associated with one downlink subframe. In addition to the present case, only one downlink subframe is scheduled for an uplink subframe associated with the plurality of downlink subframes.
  • a TPC command may be transmitted in a TPC field transmitted on the PDCCH of this downlink subframe. Accordingly, the terminal can continuously adjust the uplink transmission power adaptively.
  • FIG. 2 illustrates uplink-downlink configuration 1 in a TDD system using a single carrier.
  • two downlink subframes of frame # 0 are associated with subframe # 2, which is an uplink subframe of frame # 1
  • frame # 0 is assigned to subframe # 3, which is an uplink subframe of frame # 1.
  • One downlink subframe of is associated.
  • resources may be allocated according to the resource allocation method of PUCCH format 3 described above when "uplink subframe is associated with two or more downlink subframes”. have.
  • PUCCH transmission power may be controlled according to a TPC command transmitted in a TPC field on PDCCH of subframe # 9 of frame # 0.
  • the UE switches the transmission mode to bundle and transmit the ACK / NACK signals in the time domain or multiplexes the HARQ ACK / NACK signals by using a channel selection or the like, and implicitly allocates transmission resources to receive the HARQ ACK. / NACK signal can be transmitted.
  • the UE may transmit a HARQ ACK / NACK signal by applying SORTD.
  • the UE in the case of applying SORTD using two transmission antennas, the UE, as described above with respect to Table 1, the first Control Channel Element (CCE) index n CCE of the PDCCH transmitted in the received subframe and the following.
  • CCE Control Channel Element
  • Two transmission resources may be implicitly allocated based on the CCE index n CCE +1. Therefore, the UE can apply SORTD through the two transmission resources obtained. In this case, the UE may perform HARQ response even with implicitly allocated transmission resources by performing bundling in the time domain as needed.
  • the base station may transmit the ARI using the TPC field without transmitting the TPC command in the TPC field transmitted on the PDCCH of one downlink subframe associated with the uplink subframe.
  • the UE may reuse the previously received TPC command for PUCCH transmission of the uplink subframe or maintain transmission power of the currently set PUCCH. Whether to reuse the conventional TPC command or maintain the currently set PUCCH transmission power may be determined through higher layer signaling such as RRC, or may be preset in the terminal. For example, in FIG. 2, assuming that an ARI using a TPC field is transmitted in subframe 9 of frame # 0, the UE may transmit subframe 5 of frame # 0 or PUCCH for subframe # 3 of frame # 1. The TPC command received in subframe 6 can be reused. In addition, the UE may transmit the PUCCH in the third subframe of the frame # 1 with the transmission power used to transmit the PUCCH in the second subframe of the frame # 1.
  • a terminal using a transmission antenna may apply SORTD to transmit a HARQ ACK / NACK signal.
  • whether to transmit a TPC command or an ARI in the TPC field of this downlink subframe may be predetermined between the terminal and the base station, It may be delivered to the terminal through higher layer signaling.
  • the ARI may be transmitted using a TPC field on the PDCCH only in a specific downlink subframe.
  • a downlink subframe capable of transmitting ARI in each frame may be configured.
  • the UE may transmit a HARQ ACK / NACK signal using a resource of PUCCH format 3 indicated by the received ARI until the ARI is transmitted in the next frame. Accordingly, resources of PUCCH format 3 may be semi-dynamically allocated every frame.
  • one or more subframes capable of transmitting ARI may be specified for each frame. That is, depending on the channel environment or the load of the network system, the period of ARI transmission is set to 5ms, 10ms, etc., or the index of subframes dedicated to ARI transmission is set to subframe 1, subframe 3, and the like. By doing so, it is possible to specify a downlink subframe for transmitting the ARI.
  • Setting of an ARI transmission period or setting of a dedicated subframe index may be performed through RRC signaling or the like.
  • FIG. 3 schematically illustrates an example of specifying a downlink subframe for transmitting ARI in uplink-downlink configuration 2 in a TDD system using a single carrier.
  • the ARI is transmitted in subframes 0 and 5 specified in each frame. 3 may also be regarded as a case in which the ARI is transmitted every 5ms.
  • a window to which an ARI transmitted on a PDCCH of a specific downlink subframe is applied may be set, and resources of a PUCCH format 3 may be allocated to an uplink subframe located in the window using the same ARI.
  • the ARI window may be set for each ARI transmitted on the PDCCH of the downlink subframe.
  • the ARI window may be configured only for the ARI transmitted on the PDCCH of a specific downlink subframe.
  • the downlink subframe for transmitting the ARI may be specified, and the length of the ARI window to which the ARI transmitted in the corresponding downlink subframe is applied may be set according to the transmission interval or transmission period of the ARI.
  • the ARI transmission interval or transmission period and the length of the ARI window may be preset between the terminal and the base station or may be delivered to the terminal through RRC signaling.
  • FIG. 4 schematically illustrates an example of configuring an ARI window for uplink-downlink configuration 0 in a TDD system using a single carrier.
  • the ARI is transmitted in downlink subframe 0, which is associated with subframe 4 that is an uplink subframe.
  • the transmission period of the ARI is set to 10 ms.
  • the uplink subframes other than the uplink subframes (subframes 3 and 8) that do not transmit the HARQ ACK / NACK signal for the downlink transmission are in the PUCCH format 3 indicated by the ARI of the ARI window to which they belong.
  • the HARQ ACK / NACK signal may be transmitted using the resource.
  • FIG. 5 schematically illustrates an example of configuring an ARI window for uplink-downlink configuration 1 in a TDD system using a single carrier.
  • the ARI windows for ARIs transmitted on the PDCCH of each downlink subframe may be configured to overlap in time.
  • an ARI window that is applied first may be designated for an uplink subframe located in a place where a plurality of ARI windows overlap.
  • an ARI transmitted through a specific subframe may be set to be applied first, or a new ARI window may be applied first in time.
  • the method of selecting an ARI window to be applied first may be preset between the terminal and the base station or may be delivered to the terminal through RRC signaling.
  • HARQ ACK / NACK signal transmission may be performed using a resource of PUCCH format 3 indicated by ARI 2 in subframe 3 of frame # 1 of FIG. 5.
  • the terminal using the multiple transmit antenna can be applied to SORTD to transmit the HARQ ACK / NACK signal.
  • a resource of PUCCH format 3 for HARQ ACK / NACK signal transmission may be allocated to an uplink subframe.
  • a method of transmitting a TPC command may be considered as a TPC field transmitted in one downlink subframe.
  • the terminal may be implicitly allocated a transmission resource.
  • the UE switches the transmission mode to transmit the ACK / NACK signals by bundling the codewords in the time domain for each codeword or by multiplexing HARQ ACK / NACK signals by using a channel selection or the like, and uses an implicitly allocated transmission resource.
  • HARQ ACK / ANCK signal can be transmitted.
  • the UE even though the PDCCH of the downlink subframe in which the TPC command for the uplink subframe is transmitted is received, even if the PDCCH of the downlink subframe in which the ARI for allocating the resources of PUCCH format 3 is not received, the UE As described above, the HARQ ACK / NACK signal may be transmitted by applying SORTD.
  • the HARQ ACK / NACK resource may be allocated to the uplink-downlink configuration 1 to the configuration 5 through the above-described various methods.
  • a codebook size of PUCCH format 3 to be used needs to be determined in order to accurately transmit and receive data between a terminal and a base station.
  • up to 6 bits of HARQ ACK / NACK signals may be transmitted in one UL subframe. That is, HARQ ACK / NACK signals for subframes 1, 5, and 6 of the previous frame are transmitted to subframe 2, which is an uplink subframe. In this case, if two codewords are transmitted to subframes 1, 5, and 6, which are downlink subframes, up to 6 bits of HARQ ACK / NACK signals are transmitted.
  • subframes 1, 5, and 6 may be scheduled, and only one codeword may be transmitted in a downlink subframe.
  • HARQ ACK / NACK signals for up to two downlink subframes are transmitted to subframes 3 and 4, which are uplink subframes, respectively.
  • the codebook size is the maximum HARQ that can be transmitted through one uplink subframe according to the number of codewords transmitted in the uplink-downlink configuration and the downlink subframe, that is, the downlink transmission mode. It may be determined by the number of bits of the ACK / NACK signal.
  • the NACK signal may be transmitted to fill the codebook size.
  • the base station always processes bits having a predetermined size as HARQ ACK / NACK signals among the signals transmitted on the PUCCH in PUCCH format 3 according to an uplink-downlink configuration and a downlink transmission mode defined between the UE. can do.
  • an ARI may be transmitted using a TPC field transmitted on a PDCCH activating the SPS.
  • the base station may allocate a transmission resource to be used for the terminal to transmit the HARQ ACK / NACK response on the PUCCH through the ARI.
  • SORTD may be applied to the HARQ ACK / NACK response signal transmission of the terminal.
  • the base station can transmit the HARQ ACK / NACK signal by applying the SORTD by transmitting an ARI that allocates two transmission resources by using the TPC field transmitted on the PDCCH of the major carrier.
  • the base station transmits an ARI that allocates one transmission resource by using a TPC field transmitted on a PDCCH of a major carrier and another by using a TPC field transmitted on a PDCCH of a subcarrier to which SPS is not applied.
  • the terminal may be configured to transmit a HARQ ACK / NACK signal by applying SORTD.
  • a transmission scheme that the terminal uses for HARQ ACK / NACK transmission is transmitted from the base station to the terminal through higher layer signaling.
  • a PUCCH format, a resource allocation scheme, whether to apply SORTD, etc. used by a UE to transmit an HARQ ACK / NACK signal are transmitted from the base station to the UE through higher layer signaling.
  • the fallback mode is a HARQ ACK / NACK signal in PUCCH format 3 according to a predetermined method between the terminal and the base station or a method indicated by the base station through higher layer signaling (hereinafter, referred to as 'normal mode').
  • 'normal mode' a HARQ ACK / NACK signal in PUCCH format 3 according to a predetermined method between the terminal and the base station or a method indicated by the base station through higher layer signaling (hereinafter, referred to as 'normal mode').
  • 'normal mode' higher layer signaling
  • a normal mode is determined correspondingly, but when one component carrier is scheduled only in one downlink subframe, a contrast mode is applied.
  • a normal mode is defined such that a TPC command is transmitted in a TPC field of a major carrier and an ARI is transmitted using a TPC field of a subcarrier, but only a major carrier is scheduled or only a minor carrier is received.
  • Contrast mode can also be applied. That is, the contrast mode may also be predetermined between the terminal and the base station, and information about the contrast mode may be transmitted from the base station to the terminal through higher layer signaling.
  • PUCCH format 1a / 1b may be used instead of PUCCH format 3 as a transmission format.
  • spatial bundling may be performed for signal transmission of 1 bit.
  • the normal mode was a method of transmitting a HARQ response signal in PUCCH format 3 by applying a single antenna or SORTD, but when a plurality of subframes are received only by major carriers (DAI> 1)
  • the HARQ response signal is transmitted based on the control channel element (CCE) index n CCE for the PDCCH of the received downlink subframe.
  • CCE control channel element
  • PUCCH format 1a / 1b may be used instead of PUCCH format 3 as a transmission format.
  • bundling may be required. In bundling, only time domain bundling may be performed in consideration of a size of a signal to be transmitted, or time bundling and spatial bundling may be performed together.
  • FIG. 6 is a diagram schematically illustrating an example of performing time domain bundling to transmit an HARQ ACK / NACK signal using PUCCH format 1b.
  • FIG. 6 for convenience of description, four downlink subframes associated with one uplink subframe are transmitted using only a small carrier and 2CW is transmitted in each downlink subframe as an example.
  • the number of subframes is a number according to a received order for a downlink subframe associated with one uplink subframe.
  • a 1-bit bundled signal S1 may be obtained by time-domain ACK / NACK signals A1, B1, C1, and D1 for each downlink subframe of a major carrier.
  • ACK / NACK signals A2, B2, C2, and D2 for each downlink subframe of a major carrier may be time-domain-bundled to obtain a 1-bit bundled signal S2.
  • the UE may transmit the 2 bit signal S1S2 by applying SORTD using a transmission resource of PUCCH format 1b implicitly allocated through the PDCCH received in the last or other subframe.
  • FIG. 7 is a diagram schematically illustrating an example of performing spatial bundling and time domain bundling to transmit an HARQ ACK / NACK signal using PUCCH format 1a.
  • four downlink subframes associated with one uplink subframe are transmitted only as major carriers, and 2CW is transmitted in each downlink subframe as an example.
  • the number of subframes is a number according to a received order for a downlink subframe associated with one uplink subframe.
  • spatial bundling may be performed for each subframe to obtain bundled ACK / NACK signals B, C, and D.
  • time-domain bundling of the ACK / NACK signals A, B, C, and D may provide one-bit bundled ACK / NACK signal S.
  • the UE may transmit by applying SORTD by using two resources of PUCCH format 1a, which is implicitly allocated the 1-bit ACK / NACK signal S.
  • channel selection may be used as the contrast mode.
  • a transmission resource required may be implicitly allocated as shown in Table 1.
  • the transmission mode in contrast mode is independent of the transmission mode in normal mode.
  • the transmission mode of the contrast mode may be set independently of the transmission mode of the normal mode. For example, when the HARQ response signal is transmitted through a single antenna in the normal mode, in contrast mode, the HARQ response signal is transmitted using SORTD or the HARQ response signal is transmitted through a single antenna without considering the transmission mode of the normal mode. Can be set. Also, even when the HARQ response signal is transmitted by applying SORTD in the normal mode, in contrast mode, the HARQ response signal is transmitted by applying the SORTD or the HARQ response signal is transmitted through a single antenna without considering the transmission mode of the normal mode. Can be set to
  • PUCCH format 1a or PUCCH format 1b may be used and bundling may be required.
  • Transmission resources for transmitting HARQ ACK / NACK signals in PUCCH format 1a and PUCCH 1b are implicitly allocated as shown in Table 1 based on the control channel element (CCE) index n CCE for the PDCCH of the received downlink subframe. Can be.
  • CCE control channel element
  • the contrast mode When the contrast mode is applied, it may be set to use only a transmission method using a single antenna as a transmission method of the HARQ response signal.
  • PUCCH format 1a or PUCCH format 1b may be used and bundling may be required.
  • Transmission resources for transmitting HARQ ACK / NACK signals in PUCCH format 1a and PUCCH 1b are implicitly allocated as shown in Table 1 based on the control channel element (CCE) index n CCE for the PDCCH of the received downlink subframe. Can be.
  • CCE control channel element
  • Contrast mode can also be considered when the SPS is active. Since the SPS is applied only to the major carriers, the allocation of transmission resources by dynamic scheduling may be applied to the subcarrier, and the dynamic scheduling may be applied to the minor carriers in the subframe to which the SPS is not applied.
  • FIG. 8 is a diagram schematically illustrating an example of a normal mode when an SPS is activated.
  • FIG. 8 illustrates a configuration in which four downlink subframes are associated with one uplink subframe as an example.
  • an "X" indicates that an element carrier is not scheduled or lost during transmission in a corresponding subframe.
  • SPS is applied to major carriers of subframe # 0.
  • the HARQ ACK / NACK signal for the downlink subframes and the component carriers of FIG. 8 may be transmitted through one component carrier of the associated uplink subframe.
  • transmission resources may be allocated through an ARI dedicated TPC field transmitted on PUCCH in a subframe to which dynamic scheduling is applied.
  • the contrast mode may be applied when only a target to which the SPS is applied is received. For example, in the case where downlink transmission is performed only on a major carrier in a downlink subframe to which an SPS is applied, that is, when a downlink subframe or component carrier in which dynamic scheduling is performed is not transmitted, a contrast mode may be applied.
  • FIG. 9 is a diagram schematically illustrating an example in which a contrast mode is applied by only transmitting major carriers in which an SPS is transmitted in one downlink subframe.
  • a contrast mode is applied by only transmitting major carriers in which an SPS is transmitted in one downlink subframe.
  • FIG. 9 for convenience of description, a case where four downlink subframes are associated with one uplink subframe will be described as an example.
  • the transmission mode of the contrast mode may be set the same as the transmission mode of the normal mode or may be set independently of the transmission mode of the normal mode.
  • the transmission mode of the contrast mode may be set to be always transmitted using a single antenna.
  • the setting of the contrast mode may be made together with the setting of the normal mode.
  • the contrast mode can be distinguished from the normal mode in which the HARQ ACK / NACK signal is transmitted in the PUCCH format 3 according to the transmission scheme as follows.
  • the contrast mode is a method of transmitting a HARQ response signal by applying the SORTD
  • SPS activation is performed by the PDCCH of the downlink subframe to which the SPS is applied.
  • the base station may transmit to the terminal an ARI that allocates two transmission resource indexes to be used in the contrast mode by using the TPC field transmitted on the PDCCH for activating the SPS.
  • the UE may apply SORTD in the contrast mode to two transmission resources indicated by the ARI received on the PDCCH activating the SPS.
  • the base station allocates one transmission resource index (n PUCCH, 1 ) to be used in the contrast mode by transmitting the ARI by using the TPC field transmitted on the PDCCH for activating the SPS, and the second transmission resource index (n PUCCH, 2 ) may be allocated based on a transmission resource index n PUCCH, 1 allocated to the ARI, for example, n PUCCH, 1 +1.
  • the UE may receive one transmission resource through the ARI received on the PDCCH activating the SPS, and may additionally allocate another transmission resource based on the transmission resource allocated through the ARI to apply SORTD. .
  • the transmission resources allocated based on the transmission resources allocated through the ARI and the transmission resources allocated through the ARI may be transmission resources of PUCCH format 1a / 1b, transmission resources of PUCCH format 3, or spatial bundling. This may be done.
  • an ARI for allocating a transmission resource to be used in the contrast mode can be transmitted to the UE by using the TPC field transmitted on the PDCCH for activating the SPS.
  • the ARI can allocate one transmission resource. have.
  • PUCCH format 1a is used to transmit the HARQ ACK / NACK signal
  • spatial bundling may be performed.
  • the HARQ ACK / NACK signal may be transmitted in the PUCCH format 1b using the channel selection.
  • FIG. 10 is a diagram schematically illustrating a contrast mode applied when there is a subframe and / or a component carrier on which dynamic scheduling is performed.
  • FIG. 10 illustrates a case where four downlink subframes are associated with one uplink subframe for convenience of description.
  • the component carrier of subframe # 2 to which dynamic scheduling is applied is transmitted to the terminal.
  • the ARI transmitted on the PDCCH for activating the SPS is the same as the contrast mode when only the target to which the above-described SPS is applied is transmitted.
  • the transmission resource may be allocated through.
  • bundling may be required when transmitting a HARQ ACK / NACK signal in PUCCH format 1a / 1b.
  • the resource allocation method in the normal mode can be maintained.
  • FIG. 11 is a diagram schematically illustrating an example in which a resource allocation scheme may be maintained.
  • a resource allocation scheme may be maintained.
  • FIG. 11 for convenience of description, a case where four downlink subframes are associated with one uplink subframe will be described as an example.
  • a TPC field transmitted on a PDCCH in downlink subframe # 1 is used to transmit a TPC command
  • a TPC field transmitted on a PDCCH in downlink subframe # 3 is used to transmit an ARI.
  • the terminal may maintain the resource allocation method in the normal mode by receiving these two subframes.
  • the PUCCH transmit power does not need to newly transmit a TPC command such as maintaining the current transmit power
  • the ARIs are transmitted using the TPC field of the downlink subframe, the ARI is received. Resource allocation in the normal mode may be maintained.
  • FIG. 12 is a flowchart schematically illustrating an operation of a base station in a TDD system using a single carrier to which the present invention is applied.
  • the base station determines an uplink HARQ response method with the terminal (S1210).
  • the base station determines how the HARQ response transmitted by the terminal is configured and transmitted. For example, the base station may determine whether to transmit a HARQ ACK / NACK signal by applying the PUCCH format, resource allocation method, SORTD terminal. At this time, the base station may determine the UL-DL configuration to match the configuration.
  • the information about the HARQ ACK / NACK response method thus determined may be delivered to the terminal through higher layer signaling. However, this information may be predetermined between the base station and the terminal.
  • the base station configures the ARI according to the determined HARQ response method (S1220).
  • the base station configures the ARI to indicate a transmission resource of PUCCH format 3 to be used by the terminal.
  • a plurality of transmission resources may be allocated through the ARI according to the transmission antenna to which the SORTD is applied in the terminal.
  • the base station transmits the configured ARI through the downlink control channel (S1230).
  • the ARI is transmitted using the TPC field of the PDCCH. Which subframe is to be transmitted, whether to transmit the ARI fixedly, according to a certain period, whether to transmit the ARI in a subframe of DAI ⁇ 0 according to a specific rule, as previously described, follow the method.
  • the base station receives a HARQ response transmitted by the terminal according to the determined HARQ response scheme as a transmission resource allocated through the ARI (S1240).
  • FIG. 13 is a flowchart schematically illustrating an operation of a terminal in a TDD system using a single carrier, to which the present invention is applied.
  • the terminal receives downlink subframes (S1310).
  • the UE acquires the ARI transmitted on the control channel in the received downlink subframe (S1320).
  • the terminal may acquire the ARI in a predetermined subframe according to a method predetermined in the base station.
  • the terminal receives a transmission resource of PUCCH format 3 through the received ARI (S1330).
  • the terminal is allocated a transmission resource indicated by the ARI on the ARI mapping table.
  • the terminal transmits an HARQ response by using the allocated transmission resource (S1340).
  • the UE may multiplex and transmit HARQ response signals of up to 20 bits.
  • FIG. 14 is a flowchart schematically illustrating an operation of a terminal when a contrast mode is applied according to the present invention.
  • the terminal determines whether an ARI for allocating resources is received in a normal mode (S1410).
  • a transmission resource indicated by the received ARI may be allocated (S1420).
  • contrast mode may be applied.
  • the terminal may determine whether SORTD is applied (S1430). Depending on whether SORTD is applied, the number of transmission resources to be obtained may vary.
  • the terminal may acquire a plurality of transmission resources (S1440).
  • the terminal may acquire one transmission resource (S1450).
  • the transmission resource may be allocated implicitly or explicitly.
  • the UE may determine whether a plurality of downlink subframes have been transmitted (S1660). When a plurality of downlink subframes are received and the payload size of the HARQ ACK / NACK signal to be transmitted increases, bundling may be required.
  • the terminal may transmit the HARQ ACK / NACK signal using the contrast mode (S1480).
  • 15 is a block diagram schematically illustrating an example of a configuration of a base station and a terminal in a system to which the present invention is applied.
  • the terminal 1500 may include a transceiver 1510, a storage 1520, and a controller 1530.
  • the base station 1540 may include a transceiver 1550, a storage 1560, and a controller 1570.
  • the terminal 1500 transmits and receives necessary information through the transceiver 1510.
  • the transceiver 1510 may include multiple antennas, in which case the terminal 1500 may apply SORTD.
  • the storage unit 1520 stores information necessary for the terminal 1500 to perform wireless communication on a network. For example, the storage unit 1520 may configure an uplink-downlink (UL-DL) between a base station and a terminal, an ARI mapping table, an ARI transmission subframe, a priority between ARI windows, and a TPC transmitted in a corresponding downlink subframe. Information on whether an ARI or a TPC command is transmitted may be stored in the field, and control information transmitted through RRC signaling may be stored.
  • the storage unit 1520 may store an ARI mapping table that allocates the transmission resources according to the number of transmission antennas to which the SORTD is applied.
  • the storage unit 1520 may store settings of a normal mode and a contrast mode for HARQ ACK / NACK signal transmission.
  • the controller 1530 may be connected to the transceiver 1510 and the storage 1520 to control them.
  • the controller 1530 may transmit a HARQ ACK / NACK signal to the base station through the transceiver 1510 in an uplink subframe to which the resource is allocated by using the resource determined by the resource determiner 1540.
  • the control unit 1530 acquires the resources of the PUCCH format 3 indicated by the received ARI on the ARI mapping table stored in the storage unit 1520 and transmits the HARQ ACK.
  • the resource to be used for transmitting the / NACK signal can be determined.
  • the controller 1530 acquires the resources of the PUCCH format 1a / 1b based on the first CCE of the PDCCH received on the downlink subframe
  • the resource to be used for transmitting the HARQ ACK / NACK signal can be determined.
  • the controller 1530 may acquire the allocated resource and determine a resource to be used for transmitting an ACK / NACK signal.
  • the controller 1530 may determine whether the normal mode may be applied, and when the normal mode cannot be applied to the HARQ ACK / NACK signal transmission, the controller 1530 may determine to apply the contrast mode and perform a necessary procedure.
  • the base station 1540 may transmit and receive necessary information through the transceiver 1550.
  • the transceiver 1550 may include multiple antennas and support SORTD.
  • the storage unit 1560 stores information necessary for the base station 1540 to perform wireless communication on the network.
  • the storage unit 1560 may include a downlink-uplink configuration, an ARI mapping table, an ARI transmission subframe, a priority between the ARI windows, and a TPC transmitted in the corresponding downlink subframe, which may be preset between the base station and the terminal.
  • Information on whether an ARI is transmitted or a TPC command may be stored in the field, and control information transmitted through RRC signaling may be stored.
  • the controller 1570 may be connected to the transceiver 1550 and the storage 1560 to control them.
  • the controller 1570 may transmit information regarding allocation of HARQ ACK / NACK resources such as ARI to the terminal through the transceiver 1550.
  • the controller 1570 may allow the ARI to be transmitted using the TPC field transmitted on the PDCCH of the downlink subframe.
  • the controller 1570 may transmit the RRC signaling related to resource allocation to the terminal through the transceiver 1550.
  • the controller 1570 may determine whether to use PUCCH format 1a / 1b or PUCCH format 3 for an uplink subframe associated with a downlink subframe to be transmitted.
  • the controller 1570 may allocate a resource used to transmit the HARQ ACK / NACK signal on the PUCCH according to the PUCCH format. If it is determined that the PUCCH format 3 is to be used, the controller 1570 may configure an ARI used to allocate a resource of the PUCCH format 3.
  • the controller 1570 may also determine whether to apply the SORTD. If it is determined to apply the SORTD, the controller 1570 may configure an ARI mapping table and an ARI for applying the SORTD.

Landscapes

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

Abstract

La présente invention porte sur un procédé d'attribution d'une ressource de transmission, et sur un procédé de transmission d'un signal de réponse HARQ l'utilisant dans un système à duplexage par répartition temporelle (TDD) utilisant une seule porteuse. Selon la présente invention, un procédé d'attribution d'une ressource de transmission consiste à attribuer, à titre de ressource de transmission à utiliser dans la transmission d'un canal de commande de liaison montante, une ressource de transmission indiquée par un indicateur de ressource sur une table de mappage de ressources constituée de ressources d'un format de canal de commande de liaison montante auquel un traitement de transformation de Fourier discrète-étalement-multiplexage par répartition orthogonale de la fréquence (DFT-S-OFDM) est appliqué. L'indicateur de ressource envoie des informations à un terminal à l'aide d'un champ de commande de puissance transmis sur un canal de commande d'une sous-trame de liaison descendante. La table de mappage de ressources peut être constituée de telle manière que des ressources de transmission en nombre égal au nombre d'antennes d'émission du terminal puissent être attribuées par l'indicateur de ressource.
PCT/KR2012/000922 2011-02-10 2012-02-08 Procédé et appareil d'attribution d'une ressource ack/nack, et procédé de transmission d'un signal ack/nack l'utilisant WO2012108685A2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2011-0012097 2011-02-10
KR1020110012097A KR20120091960A (ko) 2011-02-10 2011-02-10 Ａｃｋ／ｎａｃｋ 자원 할당 방법 및 장치와 이를 이용한 ａｃｋ／ｎａｃｋ 신호 송신 방법
KR10-2011-0017457 2011-02-25
KR1020110017457A KR20120097907A (ko) 2011-02-25 2011-02-25 Ｈａｒｑ 자원 할당 방법 및 장치와 이를 이용한 신호 전송 방법 및 장치

Publications (2)

Publication Number Publication Date
WO2012108685A2 true WO2012108685A2 (fr) 2012-08-16
WO2012108685A3 WO2012108685A3 (fr) 2012-11-22

Family

ID=46639057

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2012/000922 WO2012108685A2 (fr) 2011-02-10 2012-02-08 Procédé et appareil d'attribution d'une ressource ack/nack, et procédé de transmission d'un signal ack/nack l'utilisant

Country Status (1)

Country Link
WO (1) WO2012108685A2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9157800B2 (en) 2013-01-15 2015-10-13 Chemimage Technologies Llc System and method for assessing analytes using conformal filters and dual polarization
CN108353402A (zh) * 2015-11-05 2018-07-31 株式会社Ntt都科摩 用户终端、无线基站以及无线通信方法
CN108353312A (zh) * 2015-11-05 2018-07-31 株式会社Ntt都科摩 用户终端、无线基站以及无线通信方法
CN108566265A (zh) * 2012-09-26 2018-09-21 交互数字专利控股公司 动态tdd上行链路/下行链路配置方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090030562A (ko) * 2007-09-20 2009-03-25 엘지전자 주식회사 광대역 무선 접속 시스템에서 자원할당을 위한 패킷전송방법
KR100984819B1 (ko) * 2005-10-07 2010-10-04 인터디지탈 테크날러지 코포레이션 고속 다운링크 및 업링크를 지원하기 위한 제어 정보의제공 방법 및 시스템
KR20100117045A (ko) * 2009-04-23 2010-11-02 엘지전자 주식회사 다중 반송파 시스템에서 ｈａｒｑ 수행 방법 및 장치
KR20100134068A (ko) * 2008-03-28 2010-12-22 콸콤 인코포레이티드 무선 통신 시스템에서 ａｃｋ 자원의 동적 할당

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100984819B1 (ko) * 2005-10-07 2010-10-04 인터디지탈 테크날러지 코포레이션 고속 다운링크 및 업링크를 지원하기 위한 제어 정보의제공 방법 및 시스템
KR20090030562A (ko) * 2007-09-20 2009-03-25 엘지전자 주식회사 광대역 무선 접속 시스템에서 자원할당을 위한 패킷전송방법
KR20100134068A (ko) * 2008-03-28 2010-12-22 콸콤 인코포레이티드 무선 통신 시스템에서 ａｃｋ 자원의 동적 할당
KR20100117045A (ko) * 2009-04-23 2010-11-02 엘지전자 주식회사 다중 반송파 시스템에서 ｈａｒｑ 수행 방법 및 장치

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108566265A (zh) * 2012-09-26 2018-09-21 交互数字专利控股公司 动态tdd上行链路/下行链路配置方法
CN108566265B (zh) * 2012-09-26 2021-04-23 交互数字专利控股公司 动态tdd上行链路/下行链路配置方法
US11671233B2 (en) 2012-09-26 2023-06-06 Interdigital Patent Holdings, Inc. Methods for dynamic uplink/downlink configuration
US9157800B2 (en) 2013-01-15 2015-10-13 Chemimage Technologies Llc System and method for assessing analytes using conformal filters and dual polarization
CN108353402A (zh) * 2015-11-05 2018-07-31 株式会社Ntt都科摩 用户终端、无线基站以及无线通信方法
CN108353312A (zh) * 2015-11-05 2018-07-31 株式会社Ntt都科摩 用户终端、无线基站以及无线通信方法
CN108353312B (zh) * 2015-11-05 2021-08-24 株式会社Ntt都科摩 用户终端、无线基站以及无线通信方法
CN108353402B (zh) * 2015-11-05 2022-09-20 株式会社Ntt都科摩 用户终端以及无线通信方法

Also Published As

Publication number Publication date
WO2012108685A3 (fr) 2012-11-22

Similar Documents

Publication Publication Date Title
US11974346B2 (en) Apparatus and method for transmitting uplink control information through a physical uplink control channel
US11121843B2 (en) Method and device for transmitting signal in wireless communication system
US9936489B2 (en) Method for transmitting control information and a device therefor
US9306706B2 (en) Control information transmission method and a device therefor
US10841046B2 (en) Method for signal transmission, and apparatus therefor
WO2012144865A2 (fr) Appareil et procédé pour émettre et recevoir un signal de commande dans un système de communication
KR101752429B1 (ko) 제어 정보를 전송하는 방법 및 이를 위한 장치
US9497011B2 (en) Carrier aggregation feedback method, device and system for different TDD uplink/downlink configurations
KR102588473B1 (ko) 상향링크 제어 채널의 자원을 동적으로 할당하는 장치 및 방법
JP2018506895A (ja) 制御情報を送信する方法及びそのための装置
CA2919899C (fr) Procede d'envoi d'informations de commande de liaison montante, et equipement utilisateur et station de base
KR101470266B1 (ko) 상향링크 응답 신호를 전송하는 방법, 기지국, 이동국 및 통신 시스템
WO2012108685A2 (fr) Procédé et appareil d'attribution d'une ressource ack/nack, et procédé de transmission d'un signal ack/nack l'utilisant
KR20120123848A (ko) 무선통신 시스템에서 ａｃｋ/ｎａｃｋ 정보 송수신 장치 및 방법
WO2015085477A1 (fr) Synchronisation souple de harq
KR20120091960A (ko) Ａｃｋ／ｎａｃｋ 자원 할당 방법 및 장치와 이를 이용한 ａｃｋ／ｎａｃｋ 신호 송신 방법
KR20120097907A (ko) Ｈａｒｑ 자원 할당 방법 및 장치와 이를 이용한 신호 전송 방법 및 장치
KR102588474B1 (ko) 상향링크 확인응답 정보 및 주기적 채널상태정보를 동시 전송하는 장치 및 방법
US20240237129A9 (en) Apparatus and method for transmitting uplink control information through a physical uplink control channel

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12744831

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase in:

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12744831

Country of ref document: EP

Kind code of ref document: A2