WO2012153976A2 - Procédé permettant à une station de base d'envoyer un signal de commande à un équipement utilisateur dans un système de communication sans fil multi-antennes et appareil correspondant - Google Patents

Procédé permettant à une station de base d'envoyer un signal de commande à un équipement utilisateur dans un système de communication sans fil multi-antennes et appareil correspondant Download PDF

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Publication number
WO2012153976A2
WO2012153976A2 PCT/KR2012/003620 KR2012003620W WO2012153976A2 WO 2012153976 A2 WO2012153976 A2 WO 2012153976A2 KR 2012003620 W KR2012003620 W KR 2012003620W WO 2012153976 A2 WO2012153976 A2 WO 2012153976A2
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Prior art keywords
resource element
transmission
resource
control signal
terminal
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PCT/KR2012/003620
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English (en)
Korean (ko)
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WO2012153976A3 (fr
Inventor
김학성
서한별
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엘지전자 주식회사
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Priority to KR1020137027378A priority Critical patent/KR20140019386A/ko
Publication of WO2012153976A2 publication Critical patent/WO2012153976A2/fr
Publication of WO2012153976A3 publication Critical patent/WO2012153976A3/fr

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    • 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
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • 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

Definitions

  • the present invention relates to a wireless communication system, and more particularly, to a method and a device for transmitting a control signal to a terminal by a base station in a multi-antenna wireless communication system.
  • MIMO Multiple-Input Multiple-Output
  • MIMO is a method using a plurality of transmission antennas and a plurality of receiving antennas, by this method can improve the transmission and reception efficiency of data. That is, the transmitting end of the wireless communication system can increase capacity and improve performance by using a plurality of antennas at the receiving end.
  • MIMO may be referred to as a 'multi-antenna'.
  • multi-antenna technology In multi-antenna technology, it does not rely on a single antenna path to receive one premise message. Instead, in multi-antenna technology, data fragments received from multiple antennas are gathered and merged to complete the data. Using multi-antenna technology, it is possible to improve the data rate within a shell area of a specified size or to increase system coverage while guaranteeing a specific data rate. This technique can also be widely used in mobile communication terminals, repeaters, and the like. According to the multiple antenna technology, it is possible to overcome the transmission limit in the mobile communication according to the prior art, which used a single antenna.
  • MIMO multiple antenna
  • N ⁇ transmitting antennas are provided, and in the receiving end, N R receiving antennas are provided.
  • the theoretical channel transmission capacity increases more than when the plurality of antennas are used at either the transmitting end or the receiving end.
  • the increase in channel transmission capacity is proportional to the number of antennas. Therefore, the transmission rate is improved and the frequency efficiency is improved.
  • the maximum transmission rate when using one antenna is R 0
  • the transmission rate when using multiple antennas is, in theory, the maximum transmission as shown in Equation 1 below.
  • the rate increase can be increased by multiplying the rate R 0 by Ri. , Where ⁇ is the lesser of N and R.
  • the research trends related to multi-antennas to date include the study of information theory axis related to the calculation of multi-antenna communication capacity in various channel environments and multi-access environments, the study of wireless channel measurement and model derivation of multi-antenna systems, and improvement of transmission reliability and transmission. Active research is being conducted from various viewpoints, such as the study of space-time signal isolation technology.
  • the mathematical modeling may be expressed as follows. As shown in FIG. 1, it is assumed that there are N ⁇ transmit antennas and N R I receive antennas. First, referring to the transmission signal, when there are N T transmit antennas, the maximum transmittable information is N T , and the transmission information may be represented by an actor as shown in Equation 2 below.
  • each transmission power is ⁇
  • Equation 3 In addition, when is expressed using the diagonal matrix of the transmission power, it is expressed as Equation 4 below. [
  • the weight matrix is applied to the information vector 5 with the adjusted transmission power to be actually transmitted.
  • N T transmitted signals ! N T transmitted signals !
  • This transmission signal is obtained by using the vector X. It can be expressed as Equation 5. Where is the weight between the th transmit antenna and the th information. W is called a weight matrix or a precoding matrix.
  • the physical meaning of the rank of the channel matrix is the number of sinners that can send different information in a given channel. Therefore, the tanks in the channel matrix are separated from each other by rows or columns
  • the rank (H) of the channel matrix H is limited as shown in Equation (6).
  • each of the different information sent using the multi-antenna technology as a 'stream' or simply 'stream'.
  • a 'stream' may be referred to as a 'layer'.
  • the number of transport streams can then, of course, not be larger than the number of tanks in the channel, which can send different information. Therefore, the channel null H can be expressed as Equation 7 below.
  • # of streams represents the number of streams.
  • one stream may be transmitted through more than one antenna.
  • mapping one or more streams to multiple antennas There may be several ways of mapping one or more streams to multiple antennas. This method can be described as follows depending on the type of multiple antenna technology. When one stream is transmitted through multiple antennas, it can be seen as a spatial diversity scheme, and when multiple streams are transmitted through multiple antennas, it can be regarded as a spatial multiplexing scheme. Of course, a hybrid form of spatial divergence space multiplexing is also possible.
  • the present invention proposes a method for transmitting a control signal to a terminal and a device for the same.
  • a base station transmits a control signal to a terminal, the channel state indicator reference signal (Channel State Information-S; CSI- Forming a resource element group (REG) in units of four resource elements consecutively in ascending order of subcarrier indexes, except for resource elements (RSs) for each resource element group; Allocating a transmission resource to the control signal and transmitting a control signal to which the transmission resource is allocated, to the terminal, wherein the channel state indicator reference signal may be defined through eight logical antenna ports.
  • the channel state indicator reference signal Channel State Information-S
  • CSI- Channel State Information-S
  • RSs resource elements
  • one or more channel state indicator reference signals (Channel State Information) Resource in units of four consecutive resource elements in ascending order of subcarrier index, except for Orthogonal Frequency Division Multiple (OFDM) symbol (OFDM) symbol including Resource Element (RE) for CSI-RS Forming an element group (REG), and allocating a transmission resource to the control signal on a resource element group basis;
  • OFDM Orthogonal Frequency Division Multiple
  • RE Resource Element
  • REG element group
  • a base station for transmitting a control signal to a terminal in a multi-input multi-output (MIMO) wireless communication system, comprising: a channel state information reference signal (CSI) Except for Resource Elements (REs), a Resource Element Group (REG) is formed in four resource element units consecutive in ascending order of subcarrier indexes, and the resource element group unit.
  • CSI channel state information reference signal
  • REG Resource Element Group
  • another aspect of the present invention provides a base station for transmitting a control signal to a terminal in a multi-input multi-output (MIMO) wireless communication system, at least one channel state indicator reference signal (Channel State Information-RS) A resource element group (4) in units of four consecutive resource elements in ascending order of subcarrier indexes, except for an Orthogonal Frequency Division Multiple (OFDM) symbol (Symbo) including a Resource Element (RE) for the CSI-RS. Resource Element Group (REG), and a processor for allocating a transmission resource to the control signal on a resource element group basis.
  • the channel status indicator reference signal may be defined through eight logical antenna ports.
  • a base station can effectively transmit a control signal to a terminal in a multi-antenna wireless communication system.
  • the effects obtainable in the present invention are not limited to the above-mentioned effects, and other effects not mentioned above may be clearly understood by those skilled in the art from the following description. will be.
  • FIG. 1 is a block diagram of a general multiple antenna (MIMO) communication system.
  • MIMO general multiple antenna
  • FIG. 2 is a diagram illustrating a control plane and a user plane structure of a radio interface protocol between a terminal and an E-UTRAN based on the 3GPP radio access network standard.
  • FIG. 3 is a diagram for describing physical channels used in a 3GPP system and a general signal transmission method using the same.
  • FIG. 4 is a diagram illustrating a structure of a radio frame used in an LTE system.
  • FIG. 5 is a diagram illustrating a structure of a downlink radio frame used in an LTE system.
  • FIG. 6 is a diagram illustrating a structure of an uplink subframe used in an LTE system.
  • 7 is a diagram illustrating various methods of mapping codewords to layers.
  • FIG. 8 is a diagram illustrating a structure of a reference signal in an LTE system supporting downlink transmission using four antennas.
  • FIG. 9 is a diagram illustrating the configuration of a relay backlash link and a relay access link in a wireless communication system.
  • 10 is a diagram illustrating an example of relay resource division.
  • Figure 11 (a) shows the 3GPP Release 8 system. It is a figure which shows a reference signal pattern.
  • Figure 11 (b) shows the 3GPP Release 9 system or 3GPP Release 10 system. It is a figure which shows a reference signal pattern.
  • FIG. 13 is a diagram showing the configuration of a CSI-RS in accordance with the present invention.
  • FIG. 14 is a diagram showing an example of the
  • FIG. 15 is a diagram illustrating an example of an REG indexing order in a 4 CSI-RS configuration in relation to the present invention.
  • FIG. 16 illustrates the order of I REG indexing in a 3 CSI-RS configuration in connection with the present invention. It is a figure which shows an example.
  • FIG. 17 is a view showing another example of an REG indexing order in a 3 CSI-RS configuration according to the present invention.
  • FIG. 18 is a diagram illustrating another example of an I REG indexing order in a 3 CSI-RS configuration according to the present invention.
  • FIG. 19 is a diagram illustrating another example of an REG indexing order in a 3 CSI-RS configuration with respect to the present invention 1 ′′.
  • FIG. 20 is a diagram illustrating an example of an REG indexing sequence in a 4 CSI-RS configuration according to the present invention.
  • 21 is a view showing another example of an REG indexing order in a 4 CSI-RS configuration in conjunction with the present invention.
  • FIG. 22 is a diagram illustrating another example of an REG indexing order in a 4 CSI-RS configuration in relation to the present invention. '
  • FIG. 23 is a view showing another example of an I REG indexing order in a 4 CSI-RS configuration in relation to the present invention.
  • 25 is a diagram illustrating an example of a block diagram of a terminal device according to an embodiment of the present invention.
  • the present specification describes an embodiment of the present invention using an LTE system and an LTE-A system, but this is an embodiment of the present invention as an example and may be applied to any communication system corresponding to the above definition.
  • the present specification describes an embodiment I of the present invention on the basis of the FDD scheme, which is an embodiment of the present invention can be easily modified and applied to the H-FDD scheme or the TDD scheme.
  • FIG. 2 is a diagram illustrating a control plane and a user plane structure of a radio interface protocol between a terminal and an E-UTRAN based on the 3GPP radio access network standard.
  • the control plane is a user equipment (UE) and means a path through which control messages used by the network to manage a call are transmitted.
  • the user plane refers to a path through which data generated at the application layer is transmitted, for example, voice data or Internet packet data.
  • the first layer, the Woolly layer provides an information transfer service to a higher layer by using a physical channel.
  • the Eolli layer is connected to the upper layer of the Medium Access Control layer through a transport channel. Data is moved between the embedded access control layer and the Euli layer through the transmission channel.
  • the physical channel utilizes time and frequency as radio resources. Specifically, the physical channel is modulated in the Orthogonal Frequency Division Multiple Access (OFDMA) scheme in the downlink, and modulated in the Single Carrier Frequency Division Multiple Access (SC-FDMA) scheme in the uplink.
  • Layer 2 I Medium Access Control (MAC) negotiation provides services to the Radio Link Control (RLC) layer, which is a higher layer, through a logical channel.
  • RLC Radio Link Control
  • the RLC layer of the second layer supports reliable data transmission.
  • the functionality of the RLC layer can also be implemented as a functional block inside the MAC.
  • Layer 2 I The Packet Data Convergence Protocol (PDCP) layer effectively filters IP packets such as IPv4 or IPv6 over narrow bandwidth wireless interfaces. It performs header compression function to reduce unnecessary control information for transmission.
  • PDCP Packet Data Convergence Protocol
  • Radio Resource Control (RRC) conflicts at the bottom of the third layer are defined only in the control plane.
  • the RRC layer is responsible for the control of logic channels, transmission channels, and physical channels in connection with configuration, reconfiguration, and release of radio bearers (RBs).
  • RB means a service provided by the second layer for data transmission between the terminal and the network.
  • the RRC layers of the terminal and the network exchange RRC messages with each other. If there is an RRC connected (RRC Connected) between the UE and the RRC layer of the network, the UE is in the RRC Connected Mode, otherwise it is in the RRC Idle Mode.
  • R C Layer The upper non-access stratum (NAS) layer performs functions such as session management and mobility management.
  • One cell constituting the base station is set to one of the bandwidth, such as 1.25, 2.5, 5, 10, 15, 20Mhz to provide a downlink or uplink transmission service to multiple terminals.
  • Different cells may be configured to provide different bandwidths.
  • the downlink transmission channel transmitting data from the network to the terminal is a BCH (Broadcast Channel) transmitting system information, a PCH (paging channel) transmitting a paging message, and a downlink shared channel (SCH) transmitting user traffic or control messages.
  • BCH Broadcast Channel
  • PCH paging channel
  • SCH downlink shared channel
  • I may be transmitted through a downlink SCH or may be transmitted through a separate downlink multicast channel (MCH).
  • MCH downlink multicast channel
  • the uplink transmission channel transmitting data from the terminal to the network transmits an initial control message.
  • the logical channel that is located above the transmission channel and is mapped to the transmission channel includes a broadcast control channel (BCCH), a paging control channel (PCCH), a common control channel (CCCH), a multicast control channel (MCCH), MTCH (Multicast Traffic Channel).
  • BCCH broadcast control channel
  • PCCH paging control channel
  • CCCH common control channel
  • MCCH multicast control channel
  • MTCH Multicast Traffic Channel
  • FIG. 3 is a diagram for describing physical channels used in a 3GPP system and a general signal transmission method using the same.
  • the terminal When the terminal is powered on or enters a new cell, the terminal performs an initial shell search operation such as synchronizing with the base station (S301). To this end, the UE receives a Primary Synchronization Channel (P-SCH) and a Secondary Synchronization Channel (S-SCH) from the base station, synchronizes with the base station, and obtains information such as a shell ID. can do. Thereafter, the terminal may receive a physical broadcast channel from the base station to obtain broadcast information in a cell. Meanwhile, the terminal may receive a downlink reference signal (DL RS) in the initial shell search step to check the downlink channel state.
  • P-SCH Primary Synchronization Channel
  • S-SCH Secondary Synchronization Channel
  • the terminal may receive a physical broadcast channel from the base station to obtain broadcast information in a cell. Meanwhile, the terminal may receive a downlink reference signal (DL RS) in the initial shell search step to check the downlink channel state.
  • DL RS downlink reference signal
  • the terminal that has finished initial cell discovery is more specific by receiving a physical downlink control channel (PDCCH) and a physical downlink control channel (PDSCH) according to the information on the PDCCH. it is able to obtain system information '(S302).
  • PDCCH physical downlink control channel
  • PDSCH physical downlink control channel
  • the terminal may perform a random access procedure (RACH) for the base station (steps S303 to S306).
  • RACH random access procedure
  • the UE transmits a specific sequence to the preamble through a physical random access channel (PRACH) (S303 and S305), and receives a response message for the preamble through the PDCCH and the corresponding PDSCH. (S304 and S306).
  • PRACH physical random access channel
  • contention resolution procedure may be additionally performed.
  • the UE After performing the above procedure, the UE performs a PDCCH / PDSCH reception (S307) and a physical uplink shared channel (PUSCH) / physical uplink control channel as a general uplink / downlink signal transmission procedure. Physical Uplink Control Channel (PUCCH) transmission (S308) may be performed.
  • the terminal receives downlink control information (DCI) through the PDCCH.
  • DCI downlink control information
  • the DCI includes control information such as resource allocation information for the terminal, and the format is different depending on the purpose of use.
  • the control information transmitted by the terminal to the base station through the uplink or received by the terminal from the base station includes a downlink / uplink AC / NACK signal, a channel quality indicator (CQI), Precoding Matrix Index (PMI), ank indicator (RI) and the like.
  • CQI channel quality indicator
  • PMI Precoding Matrix Index
  • RI ank indicator
  • the UE may transmit control information such as the above-described CQI / PMI / RI through PUSCH and / or PU ( ⁇ H).
  • FIG. 4 is a diagram illustrating a structure of a radio frame used in an LTE system.
  • a radio frame is 10 ms (327200 s )
  • the pilot includes a plurality of OFDM symbols in the time domain and a plurality of resource blocks (RBs) in the frequency domain.
  • RBs resource blocks
  • one resource block includes 12 subcarriers x7 (6) OFDM symbols.
  • the above-described radio frame I structure is merely an example, and the number of subframes included in the radio frame, the number of slots included in the subframe, and the number of OFDM symbols included in the slot may be variously changed.
  • FIG. 5 is a diagram illustrating a downlink radio frame structure used in the LTE system.
  • the downlink radio frame includes 10 subframes having an equal length.
  • a subframe is defined as a basic time unit of packet scheduling for the entire downlink frequency.
  • Each subframe is divided into a time interval (control region, contr region) for scheduling information and other control information transmission, and a time interval (data region, data region) for downlink data transmission.
  • the control region begins with the first OFDM symbol of the subframe and includes one or more OFDM symbols. The size of the control region may be set independently for each subframe.
  • the control region is used to transmit the L1 / L2 control signal.
  • the data area is used to transmit downlink traffic.
  • FIG. 6 is a diagram illustrating a structure of an uplink subframe used in an LTE system.
  • a subframe 600 having an lms length which is a basic unit of LTE uplink transmission, is composed of two 0.5 ms pilots 601. Assuming the length of a Normal Cyclic Prefix (CP), each pilot consists of seven symbols 602 and one symbol corresponds to one SC-FDMA symbol.
  • the resource block 603 is a resource allocation Danwoo I corresponding to 12 subcarriers in the frequency domain and one slot in the time domain.
  • the structure of the uplink subframe of LTE is largely divided into a data region 604 and a control region 605.
  • the data area means a series of communication resources used for transmitting data such as voice and packet transmitted to each terminal, and corresponds to the remaining resources except for the control area in the subframe.
  • Control area each It refers to a series of communication resources used for transmitting a downlink channel quality report from a terminal, receiving ACK / NACK for a downlink signal, an uplink scheduling request, and the like.
  • an area 606 in which a sounding reference signal can be transmitted in one subframe is an interval in which the last SC-FDMA symbol is located on the time axis in one subframe. On frequency, it is transmitted through the data transmission band. Sounding reference signals of multiple UEs transmitted in the last SC-FDMA of the same subframe can be distinguished from cyclic shift values.
  • an area 507 in which a DM (Demodulation) -Reference Signal is transmitted in one subframe includes a middle SC-FDMA symbol, that is, a fourth SC-FDMA symbol and an eleventh SC-FDMA symbol in one slot. It is a section with, and is transmitted through the data transmission band on the frequency.
  • FIG. 7 is a diagram illustrating various methods of mapping codewords to layers.
  • mapping codewords to layers there are various methods for mapping codewords to layers.
  • the transmitter When MIMO transmission is performed, the transmitter must determine the number of codewords according to the layer.
  • the number of codewords and layers refers to the number of different data sequences and the channel rank, respectively.
  • the transmitting end needs to map the codeword to the layer as appropriate.
  • a reference signal that is known to both the transmit and receive axes together with the data is transmitted from the transmit axis to the receiver.
  • These reference signals inform the modulation technique as well as the channel measurement, so that the demodulation process is performed.
  • the reference signal is divided into a dedicated RS (DRS) for a base station and a specific UE, that is, a common RS (CRS), which is a shell-specific reference signal for all UEs in the MS.
  • the cell-specific reference includes a reference signal for measuring the CQI / PMI / RI in the terminal to report to the base station, this is called a Channel State Information-RS (CSI-RS).
  • CSI-RS Channel State Information-RS
  • FIG. 8 is a diagram illustrating a structure of a reference signal in an LTE system supporting downlink transmission using four antennas.
  • FIG. 8 (a) shows a case of a normal cyclic battery
  • FIG. 8 (b) shows a case of an extended cyclic battery.
  • 0 to 3 described in the grating mean a common reference signal (CRS), which is a cell-specific reference signal transmitted for channel measurement and data demodulation corresponding to each of antenna ports 0 to 3,
  • the CRS which is the cell specific reference signal, may be transmitted to the terminal not only in the data information region but also in the control information region.
  • 'D' described in the grid means a downlink DM-RS (DM-RS), which is a UE-specific RS, and supports single antenna port transmission through a data region, that is, a PDSCH.
  • DM-RS downlink DM-RS
  • the terminal is signaled whether the terminal specific RS exists through a higher layer.
  • the RS mapping rule to the resource block (RB) can be expressed as Equation 8 to Equation 10 below.
  • Equation 8 is an expression for representing the CRS mapping rule.
  • Equation 9 is a formula for representing a mapping rule of a DRS to which a general CP is applied
  • Equation 10 is a formula for representing a mapping rule as a DRS to which an extended CP is applied.
  • Equations 8 to 10 k and p represent subcarrier indexes and antenna ports, respectively.
  • N RB , ns, and N represent the number of downlink RBs, the number of slot indices, and the number of shell IDs, respectively.
  • the position of RS depends on the value of V shift in terms of frequency domain.
  • the LTE-A system which is a standard for the next generation mobile communication system, is expected to support CoMP (Coordinated Multi Point) method, which was not supported in the existing standard, to improve data transmission.
  • the CoMP system refers to a system in which two or more base stations or black shells communicate with each other in cooperation with each other in order to improve communication performance between a terminal and a base station (shell or sector) in a shadow area.
  • CoMP can be divided into CoMP-Joint Processing (CoMP-JP) and CoMP-Coordinated Scheduling / beamforming (CoMP-CS / CB). .
  • CoMP-JP CoMP-Joint Processing
  • CoMP-CS / CB CoMP-Coordinated Scheduling / beamforming
  • a terminal may simultaneously receive data from each base station performing CoMP and may improve reception performance by combining signals received from each base station.
  • CoMP-CS cooperative scheduling / beamforming scheme
  • the terminal may receive data through one base station instantaneously through beamforming.
  • each base station may simultaneously receive a PUSCH signal from the terminal.
  • a cooperative scheduling / beamforming scheme (CoMP-CS)
  • only one base station receives a PUSCH, where the decision to use the cooperative scheduling / beamforming scheme is determined by cooperative cells (black base stations). do.
  • a repeater (Relay Node, RN) between the base station and the terminal may be provided to provide the terminal with a better wireless channel state.
  • RN Relay Node, RN
  • the repeater is currently widely used as a technique introduced to solve the radio shadow area in a wireless communication system.
  • the approach has evolved into a more intelligent form than that of the repeater, which simply amplifies and transmits the signal.
  • the repeater technology is a necessary technology for increasing the base station and reducing the cost of maintaining the backhaul network while increasing the service coverage and data realization in the posture mobile communication system. As the repeater technology gradually develops, it is necessary to support the repeater used in the conventional wireless communication system in the new wireless communication system.
  • the link link portion established between the base station and the repeater I link is defined as a backhaul link.
  • Transmission using Frequency Division Duplex (FDD) or TDD (Time Division Duplex) using downlink resources is called backhaul downlink, and transmission is performed using FDD or TDD using uplink resources. What is done may be expressed as a backhaul uplink.
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • FIG. 9 is a diagram illustrating the configuration of a relay backhaul link and a relay access link in a wireless communication system.
  • two types of links having different attributes are applied to respective uplink and downlink carrier frequency bands as a repeater is introduced to forward a link between a base station and a terminal.
  • the connection link portion established between the base station and the repeater is defined and represented as a relay backhaul link. If the backhaul link is transmitted using downlink frequency band (for Frequency Division Duplex, FDD) or downlink subframe (for Time Division Duplex, TDD) resources, then backhaul downlink When transmission is performed using an uplink frequency band or an uplink subframe (for TDD) resources, it may be expressed as a backhaul uplink.
  • downlink frequency band for Frequency Division Duplex, FDD
  • TDD Time Division Duplex
  • the part of the connection link established between the relay O series of terminals is defined and represented as a relay access link. If the relay access link uses downlink frequency band (if FDD) or downlink subframe (if TDD) resources, If the transmission is made by using the access downlink (access downlink) and the uplink frequency band (in case of FDD I) or uplink subframe (in case of TDD I) when the transmission is made using the resource uplink (access uplink) Can be.
  • FDD frequency band
  • TDD downlink subframe
  • the relay may receive information from the base station through the relay backhaul downlink, and may transmit information to the base station through the relay backlink uplink.
  • the repeater may transmit information to the terminal through the relay access downlink, and may receive information from the terminal through the relay access uplink.
  • the case in which the backhaul link operates in the same frequency band as the access link is called 'in-band', and the frequency band in which the backhaul link and the access link are different.
  • the case of operating at is called 'out-band'.
  • terminals operating according to an existing LTE system eg, release-8) (hereinafter referred to as legacy terminals) should be able to access the donor shell.
  • the repeater may be classified as a transparent repeater or a non-transparent repeater.
  • a transparent means a case in which a terminal does not recognize whether it communicates with a network through a repeater
  • a non-transient means a case in which a terminal recognizes whether a terminal communicates with a network through a repeater.
  • the repeater may be divided into a repeater configured as part of a donor cell or a repeater controlling a shell by itself.
  • a repeater configured as part of the donor cell may have a repeater identifier (ID), but does not have a repeater's own cell identity.
  • ID the number of repeater identifiers
  • the relay is configured as part of the donor shell.
  • such a repeater can support the legacy terminal.
  • smart repeaters, decode-and-forward relays, various types of L2 (second layer) repeaters and type-2 repeaters are such repeaters. .
  • a repeater In the case of a transfer of control of himself Shell, a repeater is provided with one or more than "dollars of control cells and a unique sound layer cell child indenter tee of each cells is controlled to lead i repeaters, the same RRM mekeo nijeung It is available. From a terminal perspective, there is no difference between accessing a cell controlled by a repeater and accessing a cell controlled by a general base station.
  • the shell controlled by this repeater can support legacy terminals.
  • self-backhauling repeaters, L3 (third layer) repeaters, type-1 repeaters and type-la repeaters are such repeaters.
  • the type-1 repeater is an in-band repeater that controls a plurality of cells, each of which appears to be a separate cell that is distinct from the donor cell from the terminal's point of view.
  • the plurality of cells have their own physical cell IDs (defined in LTE Release-8), and the repeater may transmit its own synchronization channel, reference signal, and the like.
  • the terminal may receive scheduling information and HARQ feedback directly from the repeater and transmit its own control channel (scheduling request (SR), CQI, AC / NACK, etc.) to the repeater.
  • SR scheduling request
  • CQI CQI
  • AC / NACK etc.
  • the type-1 repeater is seen as a legacy base station (a base station operating in accordance with the LTE Realize-8 system) to legacy terminals (terminals operating in accordance with the LTE Series 8 system). That is, backward compatibility.
  • the type-1 repeater can be seen as a different base station than the legacy base station, it can provide a performance improvement.
  • the type-la repeater has the same features as the type-1 repeater described above in addition to operating out-band.
  • the operation of the type-la repeater may be configured to neglect or eliminate the impact on L1 (first tradeoff) operation.
  • the type-2 repeater is an in-band repeater and does not have a separate physical shell ID and thus does not form a new cell.
  • the type-2 repeater is transparent to the legacy terminal, and the legacy terminal is not aware of the existence of the type-2 repeater.
  • Type-2 repeaters may transmit PDSCH, but at least do not transmit CRS and PDCCH.
  • resource partitioning In order for the repeater to operate in-band, some resources in time-frequency space must be reserved for the backhaul link and these resources can be set to not be used for the access link. This is called resource partitioning.
  • the general principle of resource partitioning in a repeater can be explained as follows. Hundred days downlink and access downlink can be multiplexed in a Time Division Multiplexing (TDM) scheme on one carrier frequency (ie, only one of the backhaul downlink or access downlink is active at a particular time). . Similarly, the 100 day uplink and access uplink may be multiplexed in a TDM manner on one carrier frequency (ie, only one of the backhaul uplink or access uplink is activated at a particular time).
  • TDM Time Division Multiplexing
  • Backhaul link multiplexing in FDD may be described as backhaul downlink transmission is performed in the downlink frequency band, and 100 days uplink transmission is performed in the uplink frequency band.
  • Backhaul multiplexing in TDD may be described that backhaul downlink transmission is performed in an I downlink subframe by a base station and a repeater, and backhaul uplink transmission is performed in an uplink subframe of a base station and a repeater.
  • an in-band repeater for example, when a back-haul downlink reception from a base station and an access downlink transmission to a terminal are simultaneously performed in a predetermined frequency band, a signal transmitted from a transmitting end of the repeater is received at the receiving end of the repeater. Can be received at the repeater Signal interference or RF jamming can occur at the RF front-end. Similarly, if the transmission of the uplink to the base station and the reception of the uplink of the access uplink from the terminal in a predetermined I frequency band are simultaneously performed, signal interference may occur in front of the repeater I RF. Thus, in a repeater, I simultaneous transmission and reception in one frequency band is set up with sufficient separation (e.g., ground / underground) between the receiving and transmitting signals (e.g., ground / underground). If not provided, it is difficult to implement.
  • sufficient separation e.g., ground / underground
  • One way to solve the problem of signal interference such as Iosop is to allow the repeater to operate so as not to send a signal to the terminal while receiving a signal from the donor cell. That is, a gap can be created in the transmission from the repeater to the terminal, and during this gap, the terminal (including the legacy terminal) can be set so as not to expect any transmission from the repeater. This gap can be set by configuring a Multicast Broadcast Single Frequency Network (MBSFN) subframe.
  • MBSFN Multicast Broadcast Single Frequency Network
  • 10 is a diagram illustrating an example of relay resource division.
  • a downlink (ie, access downlink) control signal and data are transmitted from a relay to a terminal as a first subframe, and a second subframe is a control region of a downlink subframe as an MBSFN subframe.
  • the control signal is transmitted from the repeater to the terminal, but no transmission is performed from the repeater to the terminal in the remaining region of the downlink subframe.
  • the legacy terminal since the transmission of the physical downlink control channel (PDCCH) is expected in all downlink subframes (in other words, the repeater receives the PDCCH in the legacy subframes of the legacy terminals in its own area).
  • the repeater needs to perform access downlink transmission rather than receiving the backhaul downlink.
  • the glacier in the repeater may provide backward compatibility with the legacy terminal.
  • the repeater may receive the transmission from the base station while no transmission is performed from the repeater to the terminal. Therefore, through such a resource partitioning scheme, it is possible to prevent access downlink transmission and 100 days downlink reception from being simultaneously performed in the in-band repeater.
  • the second subframe using the MBSFN subframe will be described in detail.
  • the control region of the second subframe may be referred to as a relay non-hearing section.
  • the repeater receives the access downlink signal without receiving the backhaul downlink signal. It means the interval to transmit. This interval may be set to 1, 2 or 3 OFDM lengths as described above.
  • the repeater may perform access downlink transmission to the terminal and receive the backhaul downlink from the base station in the remaining areas. At this time, since the repeater cannot simultaneously transmit and receive in the same frequency band, it takes time for the repeater to switch from the transmission mode to the reception mode.
  • the guard time GT needs to be set so that the repeater performs the transmission / reception mode switching in the first partial section of the backhaul downlink reception region.
  • a guard time GT for the reception / transmission mode switching of the repeater may be set.
  • the length of this guard time can be given as a time domain value, for example k (k> l) time samples (Ts), or as one or more OFDM symbol lengths. It may be set.
  • the guard time of the last part of the subframe may not be defined or set.
  • guard time may be defined only in a frequency region configured for 100 days of downlink subframe transmission (when a guard time is set in an access downlink period, legacy terminals cannot be supported).
  • the repeater may receive the PDCCH and the PDSCH from the base station. This may be expressed as an R-PDCCH (Relay-PDCCH) and an R-PDSCH (Relay PDSCH) in the sense of a relay dedicated physical channel.
  • the repeater can operate as a terminal.
  • the mode in which the repeater operates as a terminal may be called a user mode.
  • the R-PDCCH When the repeater operates as a terminal, the R-PDCCH may be represented as an E-PDCCH. In addition, when the repeater operates as a terminal, the R-PDSCH may be represented as an E-PDSCH. In this case, the E-PDCCH or the E-PDSCH may be mapped to resources without considering slots.
  • R-REG The basic unit of the R-PDCCH and the inter- glacier together with the R-PDCCH is called R-REG.
  • the REG is composed of four I REs, but the R-REG of the backhaul downlink for the relay node may be configured the same or differently.
  • the unit when the repeater operates as a terminal, the unit may form an E-PDCCH and interleaver with multiple E-PDCCHs may be called E-REG or REG.
  • FIG. 11 shows the 3GPP Release 8 system. 11 shows a reference signal pattern, and FIG. 11B shows a reference signal pattern in a 3GPP release 9 system or a 3GPP release 10 system.
  • CRSs exist for antenna ports 0, 1, 2, and 3, respectively.
  • the peculiarity is that RE is assigned to the CRS for antenna ports 0 and 1.
  • the number of REs allocated to the CRSs is different from each other. In particular, there are many REs allocated to the CRSs at OFDM symbol indexes # 0 and # 1 that cannot be used as backhaul resources.
  • 11 (b) shows a case in which the DM-RS is added and symbol indexes # 0 to # 2 cannot be used for backhull data transmission, but the number of unavailable symbols may vary.
  • FIG. 12 is a diagram illustrating a general REG indexing order.
  • REG indexing is generally performed in a time-first manner such as (a) or a frequency-first method such as (b) an offense.
  • Time-first black may also be considered a hybrid method of performing frequency-first indexing.
  • REG mapping There are various ways to map R-PDCCH to REG using REG concept. Considerations in REG mapping include CRS and CSI-RS.
  • the RE in which the CRS is present may be considered as unavailable RE and may be excluded from the R-PDCCH mapping.
  • the RE positioned by the CSI-RS may be considered as unavailable RE and may be excluded from the R-PDCCH mapping.
  • the CSI-RS may assume that all 8 ports REs are unavailable REs and may exclude them from the R-PDCCH mapping under the assumption that all 8 ports exist.
  • a zero power RE muted in the CSI-RS pattern may also be considered as unavailable RE and may be excluded from the R-PDCCH mapping.
  • the present invention is not limited to the above description, and the CSI RS configuration that is actually transmitted may be applied to a configuration different from the 8 ports assumed above.
  • the CSI-RS may be configured as shown in FIG. 13. Referring to FIG. 13, 8 port CSI-RS [-configure] may be transmitted to 5 different locations in total.
  • the R-PDCCH is mapped in REG units in order. Provide a way to do it.
  • the R-PDCCH when the repeater operates as a terminal, the R-PDCCH may be represented by an E-PDCCH, and when the repeater operates as a terminal, the R-PDSCH may be represented by an E-PDSCH.
  • the E-PDCCH or the E-PDSCH may be mapped to resources without considering slots.
  • FIG. 14 is a diagram illustrating an example of an REG indexing order in a 5 CSI-RS configuration with respect to the present invention I ′′.
  • the first slot includes a REG configuration including CRS and an REG configuration including 8 port CSI-RS.
  • the REG index may be assigned as illustrated in the first slot of FIG. 14.
  • Figure 15 is the REG indexing in the configuration of 4 CSI-RS configuration in symb # 9, # 10, # 12 and # 13
  • An example is shown.
  • FIG. 16 illustrates an example of an REG indexing sequence in a 3 CSI-RS configuration in symb # 9 and # 10.
  • FIG. 17 illustrates an example in which three CSI-RSs are configured over the first slot and the second slot.
  • 6 consecutive REs are configured as one REG to generate 2 REGs.
  • FIG. 23 is a block of SFBQSpace Frequency Block Coding) in units of 2 REs. Assuming a mapping case, one more REG can be added to symbol # 9 and # 10.
  • the 3GPP LTE standard uses Space Frequency Block Coding (SFBC), a frequency domain version of STBQSpace Time Block Code, and Space Frequency Block Coding (SFBC) operates in pairs of adjacent subcarriers. Two transmission antennas are defined for them. If four transmission antennas are applied, a combination of SFBC and frequency swept by transmission diversity can be used.
  • SFBC Space Frequency Block Coding
  • SFBC Space Frequency Block Coding
  • FIG. 22 illustrates another example of an REG indexing order in a 4 CSI-RS configuration in connection with the present invention.
  • FIG. 23 shows two symbols of symbol # 9 and # 10
  • FIG. 24 shows another example of an REG indexing order in a 4 CSI-RS configuration with respect to the present invention f.
  • 12 consecutive REs may be bundled and used as one REG.
  • the corresponding REG index may be 2 and 3, respectively.
  • a method of using only four available bundles may also be used.
  • REG is composed of 4 REs excluding RS RE, and may include 4 consecutive Res, 6 consecutive REs, and 12 consecutive REs if RS RE is included.
  • R-PDCCH REG mapping may be performed according to the following method.
  • R-PDCCH is mapped to a corresponding subframe. The method may be applied.
  • R-PDCCH REG mapping may be performed according to the following method.
  • the R-PDCCH is not mapped to the corresponding subframe. May be applied.
  • R-PDCCH REG mapping may be performed according to the following method.
  • the R-PDCCH is assigned to the corresponding subframe.
  • a method that does not map can be applied.
  • the R-PDCCH in the corresponding slot May be used.
  • two or more symbols # 9 and # 10 may be used. If it is assumed that 8 port CSI-RS is configured (actual transmission may be different), a method of not mapping an R-PDCCH to the corresponding OFDM symbd may be used.
  • the REG indexes of the first and second slots are independently defined. However, depending on the implementation, it is also possible to integrate two slots and index into one REG index.
  • the R-PDCCH is a new type of 1 PDCCH mapped over two slots, it is preferable to index both slots with one REG index.
  • the R-PDCCH is set to E-.
  • the R-PDSCH may be represented by E-PDSCH.
  • the E-PDCCH or the E-PDSCH may be mapped to resources without considering slots.
  • the terminal device 1200 includes a processor 1210, a memory 1220, an RF module 1230, a display module 1240, and a user interface module 1250.
  • the terminal device 1200 is shown for convenience of description and some models may be omitted. In addition, the terminal device 1200 may further include necessary modules. In addition, in the terminal device 1200, some modules may be divided into more detailed modules.
  • the processor 1210 is configured to perform an operation according to the embodiment of the present invention with reference to the drawings.
  • the processor 1210 may perform an operation required to multiplex the control signal and the data signal. Detailed operations of the processor 1210 may refer to the contents described with reference to FIGS. 1 to 30.
  • the memory 1220 is connected to the processor 1210 and stores an operating system, an application, a program code, data, and the like.
  • the RF modules 1230 are connected to the processor 1210 and perform a function of converting a baseband signal into a wireless signal or converting a wireless signal into a baseband signal. To this end, the F modules 1230 perform analog conversion, amplification, filtering and frequency up-conversion, or their reverse processes.
  • the display module 1240 is connected to the processor 1210 and displays various information.
  • the display module 1240 can use well-known elements such as, but not limited to, Liquid Crystal Display (LCD), Light Emitting Diode (LED), and Organic Light Emitting Diode (OLED)! ”.
  • 1250 is coupled to processor 1210 and may be configured with a combination of well-known user interfaces such as keypads, touch screen contours, and the like.
  • Embodiments described above are the components of the present invention and specific combinations of certain forms. Each component or feature is to be considered optional unless stated otherwise. Each component or specific may be embodied in a form that is not combined with other components or features. It is also possible to combine some of the components and / or features to form an embodiment of the invention. The order of the operations described in the embodiments of the present invention may be changed. Some configurations or features of one embodiment may be included in another embodiment, or may be associated with corresponding configurations or features of another embodiment. It is evident that the embodiments may be incorporated into claims that do not have an explicit citation relationship in the claims, or may be incorporated into new claims by post-application correction.
  • a specific operation described as performed by a base station may be performed by an upper node in some cases. That is, it is apparent that various operations performed for communication with the terminal in a network including a plurality of network nodes including a base station may be performed by the base station or other network nodes other than the base station.
  • the base station is a fixed station, Node B, eNode B (eNB), access Can be substituted by terms such as access point.
  • the terminal may be substituted by terms such as a user equipment (UE), a mobile station (MS), and a mobile subscriber station (MSS).
  • Embodiments according to the present invention may be implemented by various means, for example, hardware, firmware, software, or a combination thereof.
  • one embodiment of the present invention provides one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), FPGAs. (field programmable gate arrays), a processor, a controller, a microcontroller, a microprocessor, or the like.
  • ASICs application specific integrated circuits
  • DSPs digital signal processors
  • DSPDs digital signal processing devices
  • PLDs programmable logic devices
  • FPGAs field programmable gate arrays
  • processor a processor
  • controller a microcontroller
  • microprocessor or the like.
  • an embodiment of the present invention may be implemented in the form of modules, procedures, functions, etc. that perform the functions or operations described above.
  • the software code may be stored in a memory unit and driven by a processor.
  • the memory unit may exchange data with the processor by various means which are already known inside or outside the processor.

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Abstract

La présente invention porte sur un système de communication sans fil, et en particulier sur un procédé permettant à une station de base d'envoyer un signal de commande à un équipement utilisateur dans un système de communication sans fil multi-antennes et sur un appareil correspondant. Selon un mode de réalisation de la présente invention, le procédé permettant à la station de base d'envoyer le signal de commande à l'équipement utilisateur dans un système de communication sans fil entrées multiples et sorties multiples (MIMO) comprend les étapes suivantes consistant à : former un groupe d'éléments de ressource (REG) dans quatre unités d'élément de ressource consécutives dans l'ordre croissant d'un indice de sous-porteuse, en excluant des éléments de ressource (RE) pour des signaux de référence d'information d'état de canal (CSI-RS) ; attribuer une ressource de transmission au signal de commande dans les unités du groupe d'éléments de ressource ; et envoyer le signal de commande, auquel la ressource de transmission est attribuée, à l'équipement utilisateur, le signal de référence d'information d'état de canal pouvant être défini par l'intermédiaire de huit ports d'antenne logiques.
PCT/KR2012/003620 2011-05-09 2012-05-09 Procédé permettant à une station de base d'envoyer un signal de commande à un équipement utilisateur dans un système de communication sans fil multi-antennes et appareil correspondant WO2012153976A2 (fr)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015137602A1 (fr) * 2014-03-14 2015-09-17 Lg Electronics Inc. Procédé de traitement de signal reçu d'un récepteur mimo
US10224996B2 (en) 2014-04-10 2019-03-05 Huawei Technologies Co., Ltd Method for reporting channel state information user equipment, and base station
US10491340B2 (en) 2015-01-30 2019-11-26 Huawei Technologies Co., Ltd. Feedback information transmission method in communications system and apparatus

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104038312B (zh) * 2013-03-08 2019-12-31 中兴通讯股份有限公司 信道测量导频的指示信令的确定、csi反馈方法及装置
JP2017521882A (ja) 2014-05-13 2017-08-03 エルジー エレクトロニクス インコーポレイティド Ｍｉｍｏ送信機がユーザーのためのリソースを割り当てる方法及びリソースを用いてデータを送信すべきユーザーをスケジューリングする方法
KR101857671B1 (ko) * 2014-05-22 2018-05-14 엘지전자 주식회사 Mimo 송신기에서 re 그룹을 형성하는 방법

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011013989A2 (fr) * 2009-07-28 2011-02-03 Lg Electronics Inc. Procédé et appareil de transmission d’un signal de référence dans un système de communication multi-entrée multi-sortie
WO2011034340A2 (fr) * 2009-09-15 2011-03-24 엘지전자 주식회사 Procédé et appareil d'émission d'un signal de référence en voie descendante dans un système de communications sans fil gérant des antennes multiples
WO2011044530A2 (fr) * 2009-10-08 2011-04-14 Qualcomm Incorporated Procédé et appareil pour utiliser un signal de référence d'information d'état de canal dans un système de communication sans fil

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011013989A2 (fr) * 2009-07-28 2011-02-03 Lg Electronics Inc. Procédé et appareil de transmission d’un signal de référence dans un système de communication multi-entrée multi-sortie
WO2011034340A2 (fr) * 2009-09-15 2011-03-24 엘지전자 주식회사 Procédé et appareil d'émission d'un signal de référence en voie descendante dans un système de communications sans fil gérant des antennes multiples
WO2011044530A2 (fr) * 2009-10-08 2011-04-14 Qualcomm Incorporated Procédé et appareil pour utiliser un signal de référence d'information d'état de canal dans un système de communication sans fil

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
HUAWEI, HISILICON: 'Further considerations on muting for R-PDCCH' 3GPP TSG RAN WG1 MEETING #63 BIS,R1-110018 17 January 2011, *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015137602A1 (fr) * 2014-03-14 2015-09-17 Lg Electronics Inc. Procédé de traitement de signal reçu d'un récepteur mimo
US10224996B2 (en) 2014-04-10 2019-03-05 Huawei Technologies Co., Ltd Method for reporting channel state information user equipment, and base station
US10587325B2 (en) 2014-04-10 2020-03-10 Huawei Technologies Co., Ltd. Method for reporting channel state information, user equipment, and base station
US10491340B2 (en) 2015-01-30 2019-11-26 Huawei Technologies Co., Ltd. Feedback information transmission method in communications system and apparatus

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