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WO2013168901A1 - Procédé d'indication d'emplacement de ressource pucch, procédé d'attribution de ressource pucch, et appareil correspondant - Google Patents

Procédé d'indication d'emplacement de ressource pucch, procédé d'attribution de ressource pucch, et appareil correspondant Download PDF

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Publication number
WO2013168901A1
WO2013168901A1 PCT/KR2013/003113 KR2013003113W WO2013168901A1 WO 2013168901 A1 WO2013168901 A1 WO 2013168901A1 KR 2013003113 W KR2013003113 W KR 2013003113W WO 2013168901 A1 WO2013168901 A1 WO 2013168901A1
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Prior art keywords
pucch
control information
downlink control
terminal
resource
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PCT/KR2013/003113
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English (en)
Korean (ko)
Inventor
김종남
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Pantech Co Ltd
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Pantech Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • 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
    • 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 signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022—Site diversity; Macro-diversity
    • H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0035—Resource allocation in a cooperative multipoint environment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H04W72/232—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the physical layer, e.g. DCI signalling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022—Site diversity; Macro-diversity

Definitions

  • the present invention relates to a method and apparatus for indicating a location of resources of an uplink control channel carrying an uplink control signal and allocating resources of an uplink control channel.
  • a base station transmits resource allocation information of an uplink control channel carrying an uplink control signal to a terminal through a downlink control channel, and the terminal utilizes this resource allocation information to uplink through an uplink control channel.
  • the control information was sent to the base station.
  • the uplink control information is transmitted when the terminal transmits uplink control information to the base station through an uplink control channel. Since receiving points for receiving link control information may vary, a new resource allocation method of an uplink control channel and a method of providing resource allocation information of an uplink control channel to a terminal are needed.
  • the present invention provides a new resource allocation method of the uplink control channel and a method for providing resource allocation information of the uplink control channel to the terminal when receiving points for receiving the uplink control information of the terminal in the CoMP system and apparatuses thereof It aims to provide.
  • a method of dynamically indicating a location of a PUCCH resource according to whether a CoMP mode is used may include assigning downlink control information to one of two search spaces of a control region in a subframe, or a terminal operating in a non-CoMP mode. Starting point of the resource region of the PUCCH, ) And downlink control information to include an indicator indicating one of start points of a resource region of a PUCCH of a UE operating in a CoMP mode, wherein the downlink control information is included in one of the two search spaces.
  • the starting point of the resource region of the PUCCH of the UE operating in the non-CoMP mode (starting point, )
  • the starting point of the resource region of the PUCCH of the UE operating in the CoMP mode Allocating the downlink control information to indicate a); And transmitting the downlink control information to the terminal through a PDCCH.
  • Another embodiment is a PUCCH resource allocation method, which receives downlink control information from a base station through a PDCCH and decodes the downlink control information in two search spaces of a control region in a subframe or operates in a non-CoMP mode.
  • Starting point of the resource region of the PUCCH ) And the starting point of the resource region of the PUCCH of the UE operating in the CoMP mode ( Receiving downlink control information including an indicator indicating one of the " And a starting point of a resource region of a PUCCH of a UE operating in a non-CoMP mode when the downlink control information is decoded from one of the two search spaces.
  • Another embodiment is an apparatus for allocating PUCCH resources, comprising: a receiving unit for receiving downlink control information from a base station through a PDCCH; And a starting point of a resource region of a PUCCH of a UE which decodes the downlink control information in two search spaces of a control region within a subframe of the radio frame or operates in a non-CoMP mode through the receiver.
  • FIG. 1 illustrates an example of a wireless communication system to which embodiments are applied.
  • FIG 3 illustrates an example of PUCCH allocation between a UE in a non-CoMP mode and a UE in a CoMP mode according to an embodiment.
  • FIG. 4 shows another example of a wireless communication system to which embodiments are applied.
  • FIG. 5 illustrates another example of PUCCH allocation between a UE in a non-CoMP mode and a UE in a CoMP mode according to an embodiment.
  • FIG. 6 is a flowchart illustrating a method for allocating uplink control information of transmission / reception points and terminals according to another embodiment.
  • FIG. 7 is a conceptual diagram for indicating a PUCCH resource location using search spaces.
  • FIG. 8 is a flowchart illustrating a method of transmitting PUCCH after allocating PUCCH resources using search spaces of a UE.
  • 9 is a flowchart illustrating a method of allocating transmission / reception points and PUCCH resources of terminals according to another embodiment.
  • FIG. 10 is a diagram illustrating a configuration of a base station according to another embodiment.
  • FIG. 11 is a diagram illustrating a configuration of a user terminal according to another embodiment.
  • the wireless communication system in the present invention is widely deployed to provide various communication services such as voice, packet data, and the like.
  • the wireless communication system includes a user equipment (UE) and a base station (base station, BS, or eNB).
  • a user terminal is a generic concept meaning a terminal in wireless communication.
  • user equipment (UE) in WCDMA, LTE, and HSPA, as well as mobile station (MS) in GSM, user terminal (UT), and SS It should be interpreted as a concept that includes a subscriber station, a wireless device, and the like.
  • a base station or a cell generally refers to a station that communicates with a user terminal, and includes a Node-B, an evolved Node-B, an Sector, a Site, and a BTS. It may be called other terms such as Base Transceiver System, Access Point, Relay Node.
  • a base station or a cell is interpreted in a comprehensive sense to indicate some areas or functions covered by a base station controller (BSC) in CDMA, a NodeB in WCDMA, an eNB or a sector (site) in LTE, and the like. It is meant to cover various coverage areas such as megacell, macrocell, microcell, picocell, femtocell and relay node communication range.
  • BSC base station controller
  • the user terminal and the base station are two transmitting and receiving entities used to implement the technology or technical idea described in this specification in a comprehensive sense and are not limited by the terms or words specifically referred to.
  • the user terminal and the base station are two types of uplink or downlink transmitting / receiving subjects used to implement the technology or the technical idea described in the present invention, and are used in a generic sense and are not limited by the terms or words specifically referred to.
  • the uplink (Uplink, UL, or uplink) refers to a method for transmitting and receiving data to the base station by the user terminal
  • the downlink (Downlink, DL, or downlink) means to transmit and receive data to the user terminal by the base station It means the way.
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • OFDM-FDMA OFDM-TDMA
  • UMB Universal Mobile Broadband
  • 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
  • a standard is configured by configuring uplink and downlink based on one carrier or a pair of carriers.
  • Uplink and downlink transmit control information through control channels such as Physical Downlink Control CHannel (PDCCH), Physical Control Format Indicator CHannel (PCFICH), Physical Hybrid ARQ Indicator CHannel (PHICH), and Physical Uplink Control CHannel (PUCCH).
  • a data channel is configured such as PDSCH (Physical Downlink Shared CHannel), PUSCH (Physical Uplink Shared CHannel) and the like to transmit data.
  • a cell means a component carrier having a coverage of a signal transmitted from a transmission / reception point or a signal transmitted from a transmission point or a transmission / reception point, and the transmission / reception point itself. Can be.
  • FIG. 1 illustrates an example of a wireless communication system to which embodiments are applied.
  • a wireless communication system 100 to which embodiments are applied includes a coordinated multi-point transmission / reception system (CoMP system) or cooperative system in which two or more transmission / reception points cooperate to transmit a signal. It may be a coordinated multi-antenna transmission system, a cooperative multi-cell communication system.
  • the CoMP system 100 may include at least two multiple transmission / reception points 110 and 112 and terminals 120 and 122.
  • the multiple transmit / receive points have a high transmission power or low transmission in the macro cell area, which is wired controlled by being connected to a base station or a macro cell (macro cell 110, hereinafter referred to as an 'eNB') and an optical cable or an optical fiber to the eNB 110. It may be at least one RRH 112 with power.
  • downlink refers to a communication or communication path from the multiple transmit / receive points 110 and 112 to the terminal 120
  • uplink corresponds to the multiple transmit / receive points 110 and 112 from the terminal 120.
  • the transmitter may be part of multiple transmit / receive points 110 and 112, and the receiver may be part of terminals 120 and 122.
  • the transmitter may be part of the terminal 120 and the receiver may be part of the multiple transmission / reception points 110 and 112.
  • a situation in which a signal is transmitted / received through a channel such as a PUCCH, a PUSCH, a PDCCH, and a PDSCH may be described in the form of “sending and receiving a PUCCH, a PUSCH, a PDCCH, and a PDSCH”.
  • the eNB 110 performs downlink transmission to the terminals 120 and 122.
  • the eNB 110 performs downlink control information and uplink data channels such as a physical downlink shared channel (PDSCH), which is a main physical channel for unicast transmission, and scheduling required for reception of the PDSCH.
  • PDSCH physical downlink shared channel
  • a physical downlink control channel (PDCCH) for transmitting scheduling grant information for transmission in eg, a physical uplink shared channel (PUSCH)
  • PUSCH physical uplink shared channel
  • the first terminal 120 and UE1 transmits an uplink signal to the eNB 110.
  • the second terminal 122 and the UE2 transmit an uplink signal to the RRH 112.
  • the UEs 120 and 122 are a PUSCH, which is a main physical channel for unicast transmission as an uplink data channel, and a HARQ acknowledgment, channel status report indicating whether a downlink transport block is successfully received as an uplink control channel, and Physical uplink control channel (PUCCH), which is a channel used for transmitting uplink control information (UCI) including a scheduling request for resource allocation when transmitting data in uplink ) Can be sent.
  • PUSCH Physical uplink control channel
  • UCI uplink control information
  • the uplink resource block to which the PUCCH is allocated is located at the edge of the total available cell bandwidth. This is for the purpose of maximizing the frequency diversity experienced by the control signaling, and for the purpose of allocating a wide transmission bandwidth to a single terminal while maintaining the single carrier characteristic of the uplink transmission by not splitting the uplink spectrum.
  • the PUSCH is mapped between the edges to which the PUCCH is mapped, and the amount of contiguous spectrum possible for PUSCH transmission is maximized.
  • the uplink subframe 200 is a data area to which a control area to which a physical uplink control channel (PUCCH) carrying an uplink control signal is allocated and a physical uplink shared channel (PUSCH) to carry user data are allocated. Can be divided. In order to maintain a single carrier characteristic in SC-FDMA, one resource terminal is allocated with consecutive resource blocks in the frequency domain.
  • PUCCH physical uplink control channel
  • PUSCH physical uplink shared channel
  • PUCCH for one UE is allocated to an RB pair in a subframe.
  • Resource blocks belonging to a resource block pair occupy different subcarriers in each of the first slot 210 and the second slot 220.
  • the resource block pair allocated to the PUCCH is said to be frequency hopping at a slot boundary.
  • m is a location index indicating a frequency domain location of a resource block allocated to a PUCCH in a subframe.
  • the uplink control signal transmitted on the PUCCH includes an HARQ ACK / NACK signal, a CQI indicating a downlink channel state, and an SR indicating an uplink radio resource allocation request.
  • Table 1 summarizes uplink control information according to the PUCCH format.
  • PUCCH format 1 is used for transmission of SR
  • PUCCH format 1a or format 1b is used for transmission of HARQ ACK / NACK signal
  • PUCCH format 2 is used for transmission of CQI
  • PUCCH format 2a / 2b is used for CQI and HARQ ACK.
  • PUCCH format 3 can be used for transmission of HARQ ACK / NACK signal or simultaneous transmission of HARQ ACK / NACK and SR signal.
  • interference between PUCCHs may occur when reception points of PUCCHs received by UEs 120 and 122 are different from eNB 110 and RRH 112 within cell coverage of an eNB.
  • the base sequence of the PUCCH is different.
  • FIG 3 illustrates an example of PUCCH allocation between a UE in a non-CoMP mode and a UE in a CoMP mode according to an embodiment.
  • PUCCH transmissions directed to or targeting the eNB 110 and PUCCH transmissions directed to the RRH 112 are mutually different in the frequency domains 310 and 320. Can be assigned to distinguish.
  • PUCCH uplink CoMP technology has been studied to reduce such interference and to increase the PUCCH reception rate. This means that the UE transmits the PUCCH transmission at two or more points at the same time, or the UE transmits the PUCCH toward a point other than a point where the UE and the downlink are connected.
  • the downlink transmission point may be the eNB 110 and the uplink reception point may be the RRH 112 with respect to the second terminal 122.
  • the PUCCH transmission and the PUCCH transmission directed to the RRH 112 may be divided into frequency domains or resource regions 310 and 320.
  • FIG. 4 shows another example of a wireless communication system to which embodiments are applied.
  • the CoMP system 400 may include at least two multiple transmission / reception points 110 and 112 and at least three terminals 120, 122, and 124. Can be.
  • the CoMP system 400 shown in FIG. 4 has one third terminal 124 and UE3 added thereto, except that the uplink and downlink points of the third terminal 124 are the RRH 112. It is the same as the CoMP system 100 shown in FIG.
  • the PUCCH resources of the terminals 120, 122, and 124 are determined by downlink control information (CoMP serving eNB PDCCH) of the eNB 110, which is a serving cell.
  • PUCCH transmission of the terminals 120 and 122 of the eNB 110 may be directed to other RRHs in order to save uplink PUCCH transmission power and reduce uplink interference with adjacent cells or points.
  • the RRH 120 should be designed to accommodate the PUCCH of the CoMP terminal of the eNB 110, for example, the second terminal 122, as well as the PUCCH of the terminal of the RRH, for example, the third terminal 124.
  • a collision between PUCCH resources of the second terminal 122 and the third terminal 124 using the RRH 112 as a reception point may occur.
  • FIG. 5 illustrates another example of PUCCH allocation between a UE in a non-CoMP mode and a UE in a CoMP mode according to an embodiment.
  • the resource region 520 of the second terminal 120 and the PUCCH resource region 530 of the third terminal may be distinguished.
  • the resource region 510 of the first terminal 122 is distinguished from other resource regions 520 and 530, data transmission using the resource region 510 of the terminals (PeNB1 UE, PeNB2 UE) belonging to the RRH may be possible. Can be.
  • the eNB terminal is divided into legacy, UE1, and UE2 areas because legacy UEs cannot allocate PUCCH to a newly allocated PUCCH region (UE1, UE2 in the figure) to avoid interference because UL CoMP is impossible.
  • the eNB 110 and the RRH 112 should prevent the PUCCH resources of the first to third terminals 120, 122, and 124 from colliding or overlapping due to coordination or resource allocation to another area.
  • the first terminal 120 and the second terminal 122 will be described as a reference, but the first to third terminals 120, 122, and 124 may be similarly applied.
  • the PUCCH resource offset parameter indicating a resource start point of the PUCCH transmission is
  • a PUCCH resource offset parameter indicating a start point of an uplink CoMP PUCCH resource region for PUCCH transmission is additionally required.
  • This new PUCCH resource offset parameter N PUCCH_UE (1) means the starting location of the PUCCH resource for a specific UE for PUCCH format 1a / 1b.
  • the new PUCCH resource region for uplink CoMP may be supported by UE-dediciated RRC signaling of a new PUCCH resource offset parameter indicated by N PUCCH_UE (1) .
  • the present invention provides a method and apparatus for dynamically indicating a start point of a PUCCH format 1a / 1b in an uplink CoMP situation.
  • FIG. 6 is a flowchart illustrating a method for allocating uplink control information of transmission / reception points and terminals according to another embodiment.
  • DL transmission points and UL reception points are both eNBs 110 on the side of the first terminal 120.
  • the eNB 110 is a downlink transmission point or a downlink serving cell
  • the RRH 112 is an uplink reception point
  • downlink transmission points are DL transmission points.
  • UL reception points may be different from each other.
  • the DL transmission points and the UL reception points are both RRHs 112 on the side of the third terminal 124.
  • the second terminal and the third terminal are RRHs 112.
  • the uplink control may be performed in the same manner as the eNB 110 directly or indirectly.
  • the first terminal 120 illustrated in FIG. 1 is a terminal (3GPP Rel-8 / 9 terminal) operating in a non-CoMP mode and the second terminal 122 is a terminal (CoMP terminal) operating in a CoMP mode.
  • the eNB 110 first allocates downlink control information to a control region in a subframe (S610). In step S610, the eNB 110 allocates downlink control information to one of two search spaces of the control region in the subframe. In step S610, downlink control information allocated to one of the two search spaces indicates a starting point of the resource region of the PUCCH of the UE operating in the non-CoMP mode and the other one of the two search spaces. The downlink control information is allocated to the start point of the resource region of the PUCCH of the UE operating in the CoMP mode.
  • the eNB 110 transmits downlink control information to the terminal through the PDCCH (S620).
  • the PDCCH carrying downlink control information is configured in CCE units.
  • One PDCCH may consist of 1, 2, 4, or 8 CCEs, and this is called an aggregation level. Defined as
  • PDCCH candidate m monitored by the terminals 120 and 122 are shown in Table 2.
  • the search space of PDCCH is Is generally expressed as Equation 1 below.
  • n s is defined as the slot number in the radio frame.
  • N CCE, k is the total number of CCEs that can be used for downlink control information in the control region of subframe k.
  • M (L) is the number of downlink control information candidates at the CCE aggregation level L in a given search space.
  • N CCE, k is the total number of CCEs that can be used for downlink control information in the control region of subframe k.
  • M (L) is the number of downlink control information candidates at the CCE aggregation level L in a given search space.
  • a search space of a UE may include a number of carriers (each carrier may be defined as one cell) or a carrier indicator field indicating these carriers. , Hereinafter referred to as 'CIF'.
  • the number of blind decoding of the terminals (120, 122) is 12 + 48 * n x .
  • 12 is the number of blind decoding in the common search space and 48 * n means the number of blind decoding in the UE-specific search space, where n x represents the number of carriers or cells configured for the UE.
  • FIG. 7 (a) should be allocated to the search space of the PDCCH of the UE having the CIF not set to the UE and having the aggregation level 1.
  • FIG. 7 (a) should be allocated to the search space of the PDCCH of the UE having the CIF not set to the UE and having the aggregation level 1.
  • the PUCCH format 1a / 1b of the UE in the uplink non-CoMP mode or CoMP mode may be The eNB 110 allocates two search spaces 740, 750 to indicate the starting point.
  • step S610 since the eNB 110 allocates downlink control information to one of two search spaces, the starting point of the resource region of the PUCCH of the UE operating in the non-CoMP mode ( ) And the downlink control information is allocated to one of the two search spaces, so that the start point of the resource region of the PUCCH of the UE operating in the CoMP mode ( ).
  • n is a parameter that can distinguish whether the legacy legacy search space or the newly searched search space, not the actual DCI field value.
  • the PDCCH search space occupies twice as much search space as the terminal using the existing single cell.
  • the PDCCH resource region of the PUCCH format 1a / 1b for the dynamic HARQ A / N is implicitly (implicitly or implicitly) indicated to the terminals 120 and 122.
  • the terminals 120 and 122 receive the downlink control information through the PDCCH, and then blindly decode the downlink control information (S630).
  • the UEs 120 and 122 may use the two search spaces shown in FIGS. 7B and 7C even though the eNB 110 uses only a single cell (single component carrier) in a CoMP environment.
  • the first region 740 and the second region 750 are blindly decoded. Accordingly, the number of blind decodings of the terminals of the terminals 120 and 122 is 12 + 48 * 2. This is multiplied by 2 because the search spaces are doubled in the general blind decoding number (12 + 48 * n x ).
  • the first terminal 120 of FIG. 1 since the first terminal 120 of FIG. 1 is a non-CoMP mode terminal, the first terminal 120 blindly decodes the PDCCH in the first region 740 of the two search spaces 740 and 750. It may not. If the first terminal 120 blindly decodes the PDCCH in the first region 740 of the two search spaces 740 and 750, the first terminal 120 determines the starting point of the PUCCH format 1a / 1b. In operation S640, the PUCCH is allocated to the first region 510 of FIG.
  • a resource block used for PUCCH transmission of each slot of an uplink subframe is determined by Equation 2.
  • m is determined by the PUCCH format, and formats 1, 1a and 1b follow equation (3), formats 2, 2a and 2b follow equation (4), and format 3 follows equation (5).
  • the first control channel element (CCE) index of the PDCCH transmitted in the x th subframe is HARQ ACK / NACK for the PDSCH transmitted in the x th subframe.
  • Wow Resource index that is the sum of Is transmitted through the PUCCH of the control region of the x + 4th uplink subframe using.
  • the PUCCH resource of is represented by equation (7).
  • the first control channel element (CCE) index of the PDCCH transmitted in the x th subframe is HARQ ACK / NACK for the PDSCH transmitted in the x th subframe.
  • Wow Resource index that is the sum of Is transmitted through the PUCCH of the control region of the x + 4th uplink subframe using.
  • the second terminal 122 of FIG. 1 is a CoMP mode terminal
  • the second terminal 122 blindly decodes the PDCCH in the second region 750 of the two search spaces 740 and 750. You may not. If the second terminal 122 blindly decodes the PDCCH in the second region 750 of the two search spaces 740 and 750, the second terminal 122 may indicate the starting point of the PUCCH format 1a / 1b. In operation S650, the PUCCH is allocated to the second region 520 of FIG. 5.
  • the CCE index of the PDCCH carrying the DCI information indicating the PDSCH transmission according to the dynamic CCE-to-AN linkage rule is transmitted from the upper layer and the higher layer.
  • the PUCCH transmission resource is determined by the equation (8).
  • the first control channel element (CCE) index of the PDCCH transmitted in the x th subframe is HARQ ACK / NACK for the PDSCH transmitted in the x th subframe.
  • Wow Resource index that is the sum of Is transmitted through the PUCCH of the control region of the x + 4th uplink subframe using.
  • the first terminal 120 is a non-CoMP mode terminal and the second terminal 122 is described on the premise of a CoMP mode terminal.
  • the eNB does not explicitly inform whether the terminal is in CoMP mode. Can be. Accordingly, as described in detail below with reference to FIG. 8, the terminals 120 and 122 blindly decode two search spaces and determine a starting point at which PUCCH formats 1a and 1b start according to the search space where the PDCCH is searched. As a result, PUCCH transmission resources may be allocated according to Equation 6 or Equation 8.
  • two search spaces are used to implicitly indicate a start point of a resource region of PUCCH format 1a / 1b.
  • the present invention is not limited to the number of search spaces.
  • three or more search spaces may be used or some of one search spaces may be used.
  • the resource of PUCCH format 1a / 1b is divided into the case of allocating PDCCH to the first three CCEs among the six CCEs and the case of allocating the PDCCH to three later CCEs.
  • FIG. 8 is a flowchart illustrating a method of transmitting PUCCH after allocating PUCCH resources using search spaces of a UE.
  • the UE calculates search spaces of the PDCCH represented by Equation 1 according to Equation 1 (S810).
  • the terminal may be all terminal (s) located within the cell coverage of the first and second terminals 120 and 122, the third terminal 124, or the eNB 110 of FIG. 1. In Equation 1 to be.
  • the UE determines the starting point of the PUCCH format 1a / 1b.
  • antenna port represents the PUCCH usage resources of Equation 6 and antenna ports
  • the PUCCH resource of FIG. 7 is allocated by PUCCH and transmitted (S830).
  • the UE determines the starting point of the PUCCH format 1a / 1b.
  • the PUCCH resource used in Equation 8 is represented by the antenna port
  • the PUCCH resource of FIG. 9 is allocated by PUCCH and transmitted (S850).
  • the UE does not transmit the PUCCH of the PUCCH formats 1a / 1b (S860).
  • 9 is a flowchart illustrating a method of allocating transmission / reception points and PUCCH resources of terminals according to another embodiment.
  • the eNB 110 transmits downlink control information including an indicator indicating one of a start point of a resource region of a PUCCH (S920).
  • This indicator indicates the mapping to the resource element of the PDSCH according to the CoMP operation and at the same time the start point of the resource region of the PUCCH of the UE operating in the non-CoMP mode ( ) And the starting point of the resource region of the PUCCH of the UE operating in the CoMP mode ( ) May be indicated.
  • this indicator reuses some of the values of the antenna port, the scrambling ID, and the number of indicators indicating the number of layers, and thus the start point of the resource region of the PUCCH of the UE operating in the non-CoMP mode ( ) And the starting point of the resource region of the PUCCH of the UE operating in the CoMP mode ( ) May be indicated.
  • the PDSCH mapping in the CoMP environment may vary according to the CoMP mode of the UE or the CFI of each point constituting the CoMP set, the number of CRS ports, the CRS position, and the like.
  • the indicator indicating the PDSCH RE mapping to the CoMP UE may be dynamically instructed by adding a new field to the DCI format or reusing an existing field according to the PDSCH RE mapping.
  • the former indicator when the PDSCH RE mapping is instructed to the CoMP UE through the DCI format, the start point of the resource region of the PUCCH of the UE may be indicated.
  • an indication bit for PDSCH RE mapping is newly added to the DCI format, and the UE's assumption of PDSCH RE mapping and the start point of the PUCCH resource region (PUCCH offset) are shown. ) At the same time.
  • the CoMP system since the CoMP system uses only a single carrier (cell), a CIF field indicating two or more carriers (hereinafter referred to as 'CoIF' (CoMP Indicator Field) to distinguish it from the CIF field). ) Can be used to indicate the UE's assumption of PDSCH RE mapping and the start point (PUCCH offset) of the resource region of the PUCCH at the same time.
  • the CoMP set may be three points.
  • CoIF of Table 4 may be associated with a UE specific set of CoMP elements configured by the upper layer of Table 5.
  • CoIF can deliver various combinations of CoMP elements from semi-statically configured CoMP elements as shown in Table 5, and can simultaneously indicate the starting point of the PUCCH resource region (PUCCH offset). .
  • CoIF delivers various combinations of CoMP elements from semi-statically configured CoMP elements as shown in Table 5 and the resource region of PUCCH.
  • the start point of the PUCCH offset may be simultaneously indicated.
  • the latter indicator reuses some of the values indicating the antenna port (s), the scrambling identity, and the number of layers as the PUCCH offset of the resource region of the PUCCH.
  • An example may be a field indicating an antenna port (s), a scrambling identity, and a number of layers in Table 7 in DCI format 2C.
  • n SCID is the scrambling ID of antenna ports 7 and 8.
  • transport block 1 is mapped to codeword 0 and transport block 2 is mapped to codeword 1.
  • FIG. if one of the two transmission blocks is not enabled, only one transmission block is mapped to one codeword.
  • the terminals 120 and 122 receive downlink control information through the PDCCH and then interpret the downlink control information (S930).
  • the first terminal 120 of FIG. 1 determines the starting point of the PUCCH format 1a / 1b.
  • PUCCH is allocated to the first region 510 of FIG. 5.
  • the starting point of the PUCCH format 1a / 1b is determined.
  • the step of allocating and transmitting the PUCCH to the first region 510 of FIG. 5 is substantially the same as the step S640 described with reference to FIG. 6.
  • the first terminal 120 determines the start point of the PUCCH format 1a / 1b.
  • PUCCH is allocated to the first region 510 of FIG. 5.
  • the starting point of the PUCCH format 1a / 1b is determined.
  • the step of allocating and transmitting the PUCCH to the second region 520 of FIG. 5 is substantially the same as the step S650 described with reference to FIG. 6.
  • an indicator indicating a start point of a resource region of PUCCH format 1a / 1b is an indicator indicating an antenna port, a scrambling ID, and the number of layers included in CIF, CoIF, or DCI format 2C.
  • the present invention is not limited thereto, and any field of any DCI format may be reused or newly added.
  • the resource indication and allocation have been described above based on the first terminal and the second terminal, but the second terminal and the third terminal, and the first terminal and the third terminal may also be the same.
  • FIG. 10 is a diagram illustrating a configuration of a base station according to another embodiment.
  • the base station 1000 includes a controller 1010, a transmitter 1020, and a receiver 1030.
  • the controller 1010 allocates downlink control information to one of two search spaces to indicate a start point of a resource region of the PUCCH of the UE.
  • the controller 1010 indicates mapping to a resource element of a PDSCH according to a CoMP operation and simultaneously indicates one of a start point of a resource region of a PUCCH of a UE.
  • Configure downlink control information including an indicator.
  • the controller 1010 reuses some of the values of the indicator indicating the number of the antenna port, the scrambling ID, and the number of layers. It configures downlink control information indicating one of the start points of the resource region.
  • the transmitter 12020 transmits downlink control information to the terminal through the PDCCH.
  • FIG. 11 is a diagram illustrating a configuration of a user terminal according to another embodiment.
  • a user terminal 1100 includes a receiver 1110, a controller 1120, and a transmitter 1130.
  • the receiver 1110 receives downlink control information from the base station through the PDCCH.
  • the receiver 1100 receives downlink control information including an indicator indicating a mapping to a resource element of a PDSCH according to a CoMP operation and simultaneously indicating a start point of a resource region of a PUCCH of a UE.
  • Receive downlink control information including an indicator indicating one of the start points of the resource region of the control unit 1120 in relation to the PUCCH resource position indicating method mainly referring to FIG.
  • indicating a starting point of a resource region of a PUCCH of a UE operating in a non-CoMP mode PUCCH of UE operating in CoMP mode when downlink control information is decoded from another one of two search spaces.
  • controller 1120 allocates resources of the PUCCH to the UE operating in the non-CoMP mode according to the indicator included in the downlink control information.
  • the controller 1120 allocates resources of the PUCCH to the UE operating in the non-CoMP mode according to the indicator included in the downlink control information. Resource region of the PUCCH of the UE operating in the CoMP mode To assign.
  • the parameter indicating the start point of the resource region of the PUCCH format 1a / 1b is determined.
  • this parameter It can also be expressed as two newly defined parameters.

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PCT/KR2013/003113 2012-05-11 2013-04-12 Procédé d'indication d'emplacement de ressource pucch, procédé d'attribution de ressource pucch, et appareil correspondant Ceased WO2013168901A1 (fr)

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WO2017135668A1 (fr) * 2016-02-02 2017-08-10 Samsung Electronics Co., Ltd. Procédé et équipement utilisateur pour l'émission et la réception de signaux
US12207301B2 (en) 2016-02-02 2025-01-21 Samsung Electronics Co., Ltd Method and user equipment for transmitting and receiving sounding reference signals
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US10524237B2 (en) 2016-03-07 2019-12-31 Samsung Electronics Co., Ltd. Control signaling for supporting multiple services in advanced communication systems
KR20180114079A (ko) * 2016-03-07 2018-10-17 삼성전자주식회사 무선 통신 시스템에서 다중 서비스들에 대한 제어 시그널링을 위한 장치 및 방법
KR102372813B1 (ko) * 2016-03-07 2022-03-10 삼성전자주식회사 무선 통신 시스템에서 다중 서비스들에 대한 제어 시그널링을 위한 장치 및 방법
WO2017155273A1 (fr) * 2016-03-07 2017-09-14 Samsung Electronics Co., Ltd. Procédé et appareil de signalisation de commande dans de multiples services dans un système de communication sans fil
WO2019028895A1 (fr) * 2017-08-11 2019-02-14 Zte Corporation Élément de ressource de ressource de commande
US11595175B2 (en) 2017-09-19 2023-02-28 Nec Corporation Methods and apparatuses for transmitting control information
WO2019056164A1 (fr) * 2017-09-19 2019-03-28 Nec Corporation Procédés et appareils destinés à la transmission d'informations de commande
WO2020092260A1 (fr) * 2018-10-31 2020-05-07 Intel Corporation Transmission améliorée de canal physique de commande de liaison montante (pucch) pour obtenir une grande fiabilité
US12150135B2 (en) 2018-10-31 2024-11-19 Apple Inc. Enhanced physical uplink control channel (PUCCH) transmission for high reliability
WO2020092264A1 (fr) * 2018-11-01 2020-05-07 Intel Corporation Multiplexage d'informations de commande de liaison montante (uci) pour système à multiples points de transmission et de réception (trp)

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