WO2012093826A2 - 무선 통신 시스템에서 상향링크 제어 정보를 전송하는 방법 및 이를 위한 장치 - Google Patents
무선 통신 시스템에서 상향링크 제어 정보를 전송하는 방법 및 이를 위한 장치 Download PDFInfo
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- WO2012093826A2 WO2012093826A2 PCT/KR2012/000029 KR2012000029W WO2012093826A2 WO 2012093826 A2 WO2012093826 A2 WO 2012093826A2 KR 2012000029 W KR2012000029 W KR 2012000029W WO 2012093826 A2 WO2012093826 A2 WO 2012093826A2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15528—Control of operation parameters of a relay station to exploit the physical medium
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
- H04J11/0023—Interference mitigation or co-ordination
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
- H04L5/0055—Physical resource allocation for ACK/NACK
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/2603—Signal structure ensuring backward compatibility with legacy system
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0014—Three-dimensional division
- H04L5/0023—Time-frequency-space
Definitions
- the present invention relates to a wireless communication system, and more particularly, to a method and apparatus for transmitting uplink control information in a wireless communication system. Specifically, the present invention relates to a method for a relay node to transmit uplink control information to a base station, an apparatus for the same or a method for a terminal to transmit uplink control information to a relay node, and an apparatus therefor.
- a 3GPP LTE (3rd Generation Partnership Project Long Term Evolution (LTE)) communication system will be described.
- E-UMTS Evolved Universal Mobile Telecommunications System
- UMTS Universal Mobile Telecommunications System
- LTE Long Term Evolution
- an E-UMTS is an access gateway (AG) located at an end of a user equipment (UE) and a base station (eNode B), an eNB, and a network (E-UTRAN) and connected to an external network.
- the base station may transmit multiple data streams simultaneously for broadcast service, multicast service and / or unicast service.
- the cell is set to one of bandwidths such as 1.25, 2.5, 5, 10, 15, and 20Mhz to provide downlink or uplink transmission services to multiple terminals. Different cells may be configured to provide different bandwidths.
- the base station controls data transmission and reception for a plurality of terminals.
- the base station transmits downlink scheduling information for downlink (DL) data and informs the user equipment of time / frequency domain, encoding, data size, and HARQ (Hybrid Automatic Repeat and reQuest) related information.
- HARQ Hybrid Automatic Repeat and reQuest
- the base station transmits uplink scheduling information to uplink UL data for uplink (UL) data and informs the user equipment of time / frequency domain, encoding, data size, HARQ related information, and the like.
- the core network may be composed of an AG and a network node for user registration of the terminal.
- the AG manages the mobility of the UE in units of a tracking area (TA) composed of a plurality of cells.
- Wireless communication technology has been developed to LTE based on WCDMA, but the demands and expectations of users and operators are continuously increasing.
- new technological evolution is required to be competitive in the future. Reduced cost per bit, increased service availability, the use of flexible frequency bands, simple structure and open interface, and adequate power consumption of the terminal are required.
- a method for allocating a resource for transmitting uplink control information to a base station by a relay node includes: generating a control information sequence for backhaul downlink between the relay node and the base station; Setting symbols for mapping the control information sequence when a plurality of symbols are punctured at a front end or a rear end of a backhaul uplink subframe between the relay node and the base station; And performing time-first mapping of the control information sequence to resource elements corresponding to the set symbols in descending order of subcarrier indexes.
- a relay node in a wireless communication system generates a control information sequence for a backhaul downlink between the relay node and the base station, and the front end of the backhaul uplink subframe between the relay node and the base station; If a plurality of symbols are punctured at a later stage, symbols for mapping the control information sequence are set, and the time-first mapping of the control information sequence in descending order of subcarrier indexes to resource elements corresponding to the set symbols is performed.
- a processor for performing time-first mapping
- a transmitting module for transmitting the mapped control information sequence to the base station.
- control information for the backhaul downlink is a rank indicator
- the control information sequence is mapped. Symbols to be characterized in that it is set to the index 5 and the index 8. Alternatively, the symbols for mapping the control information sequence may be set to index 1, index 5, and index 8.
- the symbols for mapping the control information sequence are set to index 5, index 8, and index 12. It features.
- control information on the backhaul downlink is ACK / NACK (Acknowledgement / Negative ACK) information
- ACK / NACK Acknowledgement / Negative ACK
- Symbols for mapping the information sequence is set to the index 3 and the index 7.
- symbols for mapping the control information sequence may be set to index 3, index 7 and index 9.
- a relay node in a wireless communication system, can effectively transmit uplink control information to a base station or a terminal to a relay node.
- FIG. 1 schematically illustrates an E-UMTS network structure as an example of a wireless communication system.
- 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. 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 explaining physical channels used in a 3GPP system and a general signal transmission method using the same.
- FIG. 3 is a diagram for explaining 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.
- FIG. 7 is a diagram illustrating the configuration of a relay backhaul link and a relay access link in a wireless communication system.
- FIG. 9 is a block diagram illustrating a processing procedure for an uplink physical shared channel.
- FIG. 10 is a diagram illustrating a mapping method of physical resources for uplink data and control channel transmission.
- 11 is a flowchart illustrating a method of efficiently multiplexing data and control channels on an uplink shared channel.
- FIG. 12 is a block diagram illustrating a method of generating a transmission signal of data and a control channel.
- 13 is a diagram illustrating a codeword to layer mapping method.
- FIG. 14 is a diagram illustrating uplink subframe transmission and reception timing.
- 15 is another diagram illustrating uplink subframe transmission / reception timing.
- 16 is another diagram illustrating uplink subframe transmission / reception timing.
- 17 is a diagram illustrating a mapping order of control information when a general CP is applied to an LTE system.
- 18 is a diagram illustrating a mapping order of control information when an extended CP is applied in an LTE system.
- mapping control information according to the first embodiment of the present invention when a general CP is applied.
- mapping control information according to the first embodiment of the present invention when an extended CP is applied.
- mapping control information according to the second embodiment of the present invention when a general CP is applied.
- mapping control information illustrates an example of mapping control information according to the second embodiment of the present invention when an extended CP is applied.
- FIG. 23 is a diagram illustrating uplink subframe transmission / reception timing to which an embodiment of the present invention can be applied.
- mapping control information illustrates an example of mapping control information according to the third embodiment of the present invention when a general CP is applied.
- mapping control information according to the third embodiment of the present invention when an extended CP is applied.
- FIG. 26 shows an example of mapping control information according to the fourth embodiment of the present invention when an extended CP is applied.
- FIG. 27 shows an example of mapping control information according to the fifth embodiment of the present invention when an extended CP is applied.
- FIG. 28 illustrates a block diagram of a communication 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, this as an example may be applied to any communication system corresponding to the above definition.
- the present specification describes an embodiment of the present invention on the basis of the FDD scheme, but this is an exemplary 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 refers to a path through which control messages used by a user equipment (UE) and a network to manage a call are transmitted.
- the user plane refers to a path through which data generated at an application layer, for example, voice data or Internet packet data, is transmitted.
- the physical layer which is the first layer, provides an information transfer service to an upper layer by using a physical channel.
- the physical layer is connected to the upper layer of the medium access control layer through a transport channel. Data moves between the medium access control layer and the physical layer through the transport channel. Data moves between the physical layer between the transmitting side and the receiving side through the physical 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.
- OFDMA Orthogonal Frequency Division Multiple Access
- SC-FDMA Single Carrier Frequency Division Multiple Access
- the medium access control (MAC) layer of the second layer provides a service to a 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 function of the RLC layer may be implemented as a functional block inside the MAC.
- the PDCP (Packet Data Convergence Protocol) layer of the second layer provides unnecessary control for efficiently transmitting IP packets such as IPv4 or IPv6 over a narrow bandwidth air interface. It performs header compression function that reduces information.
- the Radio Resource Control (RRC) layer located at the bottom of the third layer is defined only in the control plane.
- the RRC layer is responsible for control of logical channels, transport 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 UE 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 an RRC connected mode, otherwise it is in an RRC idle mode.
- the non-access stratum (NAS) layer above the RRC 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 transport channel for transmitting data from the network to the UE includes a broadcast channel (BCH) for transmitting system information, a paging channel (PCH) for transmitting a paging message, and a downlink shared channel (SCH) for transmitting user traffic or a control message.
- BCH broadcast channel
- PCH paging channel
- SCH downlink shared channel
- Traffic or control messages of a downlink multicast or broadcast service may be transmitted through a downlink SCH or may be transmitted through a separate downlink multicast channel (MCH).
- the uplink transmission channel for transmitting data from the terminal to the network includes a random access channel (RAC) for transmitting an initial control message and an uplink shared channel (SCH) for transmitting user traffic or a control message.
- RAC random access channel
- SCH uplink shared 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 UE When the UE is powered on or enters a new cell, the UE performs an initial cell search operation such as synchronizing with the base station (S301). To this end, the terminal may receive a Primary Synchronization Channel (P-SCH) and a Secondary Synchronization Channel (S-SCH) from the base station to synchronize with the base station and obtain information such as a cell ID. have. 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 an initial cell search step to check the downlink channel state.
- P-SCH Primary Synchronization Channel
- S-SCH Secondary Synchronization Channel
- DL RS downlink reference signal
- the UE After completing the initial cell search, the UE acquires more specific system information by receiving a physical downlink control channel (PDSCH) according to a physical downlink control channel (PDCCH) and information on the PDCCH. It may be (S302).
- PDSCH physical downlink control channel
- PDCCH 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 may transmit a specific sequence to the preamble through a physical random access channel (PRACH) (S303 and S305), and receive a response message for the preamble through the PDCCH and the corresponding PDSCH ( S304 and S306).
- PRACH physical random access channel
- a contention resolution procedure may be additionally performed.
- the UE After performing the procedure as described above, the UE performs a PDCCH / PDSCH reception (S307) and a physical uplink shared channel (PUSCH) / physical uplink control channel (Physical Uplink) as a general uplink / downlink signal transmission procedure.
- 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 according to 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 ACK / NACK signal, a channel quality indicator (CQI), a precoding matrix index (PMI), and a rank indicator (RI). ), And the like.
- the terminal may transmit the above-described control information such as CQI / PMI / RI through the PUSCH and / or PUCCH.
- FIG. 4 is a diagram illustrating a structure of a radio frame used in an LTE system.
- a radio frame has a length of 10 ms (327200 ⁇ T s ) and is composed of 10 equally sized subframes.
- Each subframe has a length of 1 ms and consists of two slots.
- Each slot has a length of 0.5 ms (15360 x T s ).
- the slot includes a plurality of OFDM symbols in the time domain and a plurality of resource blocks (RBs) in the frequency domain.
- one resource block includes 12 subcarriers x 7 (6) OFDM symbols.
- Transmission time interval which is a unit time for transmitting data, may be determined in units of one or more subframes.
- the structure of the radio frame described above 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 control channel included in a control region of one subframe in a downlink radio frame.
- a subframe consists of 14 OFDM symbols.
- the first 1 to 3 OFDM symbols are used as the control region and the remaining 13 to 11 OFDM symbols are used as the data region.
- R0 to R3 represent reference signals (RSs) or pilot signals for antennas 0 to 3.
- the RS is fixed in a constant pattern in a subframe regardless of the control region and the data region.
- the control channel is allocated to a resource to which no RS is allocated in the control region, and the traffic channel is also allocated to a resource to which no RS is allocated in the data region.
- Control channels allocated to the control region include PCFICH (Physical Control Format Indicator CHannel), PHICH (Physical Hybrid-ARQ Indicator CHannel), PDCCH (Physical Downlink Control CHannel).
- the PCFICH is a physical control format indicator channel and informs the UE of the number of OFDM symbols used for the PDCCH in every subframe.
- the PCFICH is located in the first OFDM symbol and is set in preference to the PHICH and PDCCH.
- the PCFICH is composed of four Resource Element Groups (REGs), and each REG is distributed in a control region based on a Cell ID (Cell IDentity).
- One REG is composed of four resource elements (REs).
- the RE represents a minimum physical resource defined by one subcarrier x one OFDM symbol.
- the PCFICH value indicates a value of 1 to 3 or 2 to 4 depending on the bandwidth and is modulated by Quadrature Phase Shift Keying (QPSK).
- QPSK Quadrature Phase Shift Keying
- the PHICH is a physical hybrid automatic repeat and request (HARQ) indicator channel and is used to carry HARQ ACK / NACK for uplink transmission. That is, the PHICH indicates a channel through which DL ACK / NACK information for UL HARQ is transmitted.
- the PHICH consists of one REG and is scrambled cell-specifically.
- ACK / NACK is indicated by 1 bit and modulated by binary phase shift keying (BPSK).
- BPSK binary phase shift keying
- a plurality of PHICHs mapped to the same resource constitutes a PHICH group.
- the number of PHICHs multiplexed into the PHICH group is determined according to the number of spreading codes.
- the PHICH (group) is repeated three times to obtain diversity gain in the frequency domain and / or the time domain.
- the PDCCH is a physical downlink control channel and is allocated to the first n OFDM symbols of a subframe.
- n is indicated by the PCFICH as an integer of 1 or more.
- the PDCCH consists of one or more CCEs.
- the PDCCH informs each UE or UE group of information related to resource allocation of a paging channel (PCH) and a downlink-shared channel (DL-SCH), an uplink scheduling grant, and HARQ information.
- PCH paging channel
- DL-SCH downlink-shared channel
- Paging channel (PCH) and downlink-shared channel (DL-SCH) are transmitted through PDSCH. Accordingly, the base station and the terminal generally transmit and receive data through the PDSCH except for specific control information or specific service data.
- Data of the PDSCH is transmitted to which UE (one or a plurality of UEs), and information on how the UEs should receive and decode the PDSCH data is included in the PDCCH and transmitted.
- a specific PDCCH is CRC masked with a Radio Network Temporary Identity (RNTI) of "A”, a radio resource (eg, frequency location) of "B” and a transmission type information of "C” (eg, It is assumed that information on data transmitted using a transport block size, modulation scheme, coding information, etc.) is transmitted through a specific subframe.
- RTI Radio Network Temporary Identity
- the terminal in the cell monitors the PDCCH using the RNTI information it has, and if there is at least one terminal having an "A" RNTI, the terminals receive the PDCCH, and through the information of the received PDCCH " Receive the PDSCH indicated by B " and " C ".
- FIG. 6 is a diagram illustrating a structure of an uplink subframe used in an LTE system.
- an uplink subframe may be divided into a region to which a Physical Uplink Control CHannel (PUCCH) carrying control information is allocated and a region to which a Physical Uplink Shared CHannel (PUSCH) carrying user data is allocated.
- the middle part of the subframe is allocated to the PUSCH, and both parts of the data area are allocated to the PUCCH in the frequency domain.
- the control information transmitted on the PUCCH includes: ACK / NACK used for HARQ, Channel Quality Indicator (CQI) indicating downlink channel state, RI (Rank Indicator) for MIMO, Scheduling Request (SR), which is an uplink resource allocation request, etc. There is this.
- the PUCCH for one UE uses one resource block occupying a different frequency in each slot in a subframe. That is, two resource blocks allocated to the PUCCH are frequency hoped at the slot boundary.
- a relay node may be installed between the base station and the terminal to provide a radio channel having a better channel state to the terminal.
- RN relay node
- the relay node is currently widely used as a technique introduced for eliminating the radio shadow area in a wireless communication system.
- relay node technology is an essential technology for reducing the base station expansion cost and the backhaul network maintenance cost in the next generation mobile communication system, while expanding service coverage and improving data throughput.
- relay node technology gradually develops, it is necessary to support a relay node used in a conventional wireless communication system in a new wireless communication system.
- FIG. 7 is a diagram illustrating the configuration of a relay backhaul link and a relay access link in a wireless communication system.
- a relay node is introduced for a role of forwarding a link between a base station and a terminal in a 3rd Generation Partnership Project Long Term Evolution-Advanced (LTE-A) system.
- LTE-A 3rd Generation Partnership Project Long Term Evolution-Advanced
- Two types of links with different attributes are applied to the link carrier frequency band.
- the connection link portion established between the base station and the relay node is defined and represented as a relay backhaul link.
- the backhaul link is transmitted using a downlink frequency band (for Frequency Division Duplex (FDD)) or a downlink subframe (for Time Division Duplex (TDD)) resources
- the backhaul link is represented as a backhaul downlink and is uplink. If transmission is performed using a frequency band (in case of FDD) or an uplink subframe (in case of TDD), it may be expressed as a backhaul uplink.
- FDD Frequency Division Duplex
- TDD Time Division Duplex
- connection link portion established between the relay node and the series of terminals is defined and represented as a relay access link.
- a relay access link transmits using a downlink frequency band (in case of FDD) or a downlink subframe (in case of TDD), it is expressed as an access downlink and an uplink frequency band (in case of FDD).
- TDD uplink subframe
- the relay node RN may receive information from the base station through the relay backhaul downlink and may transmit information to the base station through the relay backhaul uplink. In addition, the relay node may transmit information to the terminal through the relay access downlink, and may receive information from the terminal through the relay access uplink.
- the band (or spectrum) of the relay node the case in which the backhaul link operates in the same frequency band as the access link is referred to as 'in-band', and the backhaul link and the access link have different frequencies.
- the case of operating in band is called 'out-band'.
- a terminal operating according to an existing LTE system eg, Release-8) (hereinafter referred to as a legacy terminal) should be able to access the donor cell.
- the relay node may be classified as a transparent relay node or a non-transparent relay node.
- a transparent means a case where a terminal does not recognize whether or not it communicates with a network through a relay node
- a non-transparent means a case where a terminal recognizes whether a terminal communicates with a network through a relay node.
- the relay node may be divided into a relay node configured as part of a donor cell or a relay node controlling a cell by itself.
- a relay node configured as part of a donor cell may have a relay node identifier (ID), but does not have a relay node's own cell identity.
- ID a relay node identifier
- the relay node is configured as part of the donor cell.
- a relay node can support legacy terminals.
- various types of smart repeaters, decode-and-forward relays, L2 (layer 2) relay nodes, and type 2 relay nodes may be included in these relay nodes. Corresponding.
- the relay node controls one or several cells, each of the cells controlled by the relay node is provided with a unique physical layer cell identity, and may use the same RRM mechanism. From a terminal perspective, there is no difference between accessing a cell controlled by a relay node and accessing a cell controlled by a general base station.
- the cell controlled by this relay node can support the legacy terminal.
- self-backhauling relay nodes, L3 (third layer) relay nodes, type-1 relay nodes, and type-1a relay nodes are such relay nodes.
- the type-1 relay node controls the plurality of cells as in-band relay nodes, each of which appears to be a separate cell 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 relay node may transmit its own synchronization channel, reference signal, and the like.
- the terminal may receive scheduling information and HARQ feedback directly from the relay node and transmit its control channel (scheduling request (SR), CQI, ACK / NACK, etc.) to the relay node.
- SR scheduling request
- CQI CQI
- ACK / NACK etc.
- the type-1 relay node is seen as a legacy base station (base station operating according to the LTE Release-8 system). That is, it has backward compatibility.
- the type-1 relay node may be seen as a base station different from the legacy base station, thereby providing a performance improvement.
- the type-1a relay node has the same features as the type-1 relay node described above in addition to operating out-band.
- the operation of the type-1a relay node can be configured to minimize or eliminate the impact on L1 (first layer) operation.
- the type-2 relay node is an in-band relay node and does not have a separate physical cell ID and thus does not form a new cell.
- the type 2 relay node is transparent to the legacy terminal, and the legacy terminal is not aware of the existence of the type 2 relay node.
- the type-2 relay node may transmit the PDSCH, but at least do not transmit the CRS and PDCCH.
- resource partitioning In order for the relay node to operate in-band, some resources in the time-frequency space must be reserved for the backhaul link and these resources can be set not to be used for the access link. This is called resource partitioning.
- the backhaul downlink and the access downlink may be multiplexed in a time division multiplexing (TDM) scheme on one carrier frequency (ie, only one of the backhaul downlink or the access downlink is activated at a specific time).
- TDM time division multiplexing
- the backhaul 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).
- Backhaul link multiplexing in FDD may be described as backhaul downlink transmission is performed in a downlink frequency band, and backhaul uplink transmission is performed in an uplink frequency band.
- Backhaul link multiplexing in TDD may be described as backhaul downlink transmission is performed in a downlink subframe of a base station and a relay node, and backhaul uplink transmission is performed in an uplink subframe of a base station and a relay node.
- an in-band relay node for example, if a backhaul 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 node of the relay node is transmitted to the relay node. It may be received at the receiving end, and thus signal interference or RF jamming may occur at the RF front-end of the relay node. Similarly, if the reception of the access uplink from the terminal and the transmission of the backhaul uplink to the base station are simultaneously performed in a predetermined frequency band, signal interference may occur at the RF front end of the relay node.
- simultaneous transmission and reception in one frequency band at a relay node is provided with sufficient separation between the received signal and the transmitted signal (e.g., sufficient distance between the transmit antenna and the receive antenna geographically (e.g., ground / underground). Is not provided unless) is provided.
- One way to solve this problem of signal interference is to operate the relay node so that it does not transmit 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 relay node to the terminal, and during this gap, the terminal (including the legacy terminal) can be set not to expect any transmission from the relay node. This gap can be set by configuring a Multicast Broadcast Single Frequency Network (MBSFN) subframe.
- MBSFN Multicast Broadcast Single Frequency Network
- FIG 8 is a diagram illustrating an example of relay node resource partitioning.
- a downlink (ie, access downlink) control signal and data are transmitted from a relay node to a UE 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 relay node to the terminal, but no transmission is performed from the relay node to the terminal in the remaining areas of the downlink subframe.
- the legacy UE since the physical downlink control channel (PDCCH) is expected to be transmitted in all downlink subframes (in other words, the relay node measures the legacy UEs in their area by receiving the PDCCH in every subframe.
- PDCCH physical downlink control channel
- N 1, 2, or 3 OFDM symbol intervals of the subframe.
- the relay node may receive the transmission from the base station while no transmission is performed from the relay node to the terminal. Accordingly, through this resource partitioning scheme, it is possible to prevent access downlink transmission and backhaul downlink reception from being simultaneously performed at the in-band relay node.
- the control region of the second subframe may be referred to as a relay node non-hearing interval.
- the relay node non-hearing interval means a period in which the relay node transmits the access downlink signal without receiving the backhaul downlink signal. This interval may be set to 1, 2 or 3 OFDM lengths as described above.
- the relay node may perform access downlink transmission to the terminal and receive a backhaul downlink from the base station in the remaining areas. At this time, since the relay node cannot simultaneously transmit and receive in the same frequency band, it takes time for the relay node to switch from the transmission mode to the reception mode.
- guard time GT needs to be set so that the relay node performs transmission / reception mode switching in the first partial period of the backhaul downlink reception region.
- a guard time GT for switching the reception / transmission mode of the relay node may be set.
- This length of guard time may be given as a value in the time domain, for example, may be given as k (k ⁇ 1) time sample (Ts) values, or may be set to one or more OFDM symbol lengths. have.
- the guard time of the last part of the subframe may not be defined or set.
- Such guard time may be defined only in a frequency domain configured for backhaul downlink subframe transmission in order to maintain backward compatibility (when a guard time is set in an access downlink period, legacy terminals cannot be supported).
- the relay node may receive the PDCCH and the PDSCH from the base station. This may be expressed as a relay-PDCCH (R-PDCCH) and an R-PDSCH (Relay-PDSCH) in the sense of a relay node dedicated physical channel.
- FIG. 9 is a block diagram illustrating a process of a transport channel for an uplink shared channel.
- TB transport block
- CRC Cyclic Redundancy Check
- the channel-coded data undergoes rate matching (133), and then combinations between CBs are performed again (S134), and the combined CBs are CQI / PMI (Channel Quality Information / Precoding Matrix Index). And multiplexed (135).
- channel coding is performed separately from the data in CQI / PMI (136).
- the channel coded CQI / PMI is multiplexed with the data (135).
- RI Rank Indication
- channel encoding is performed separately from data, CQI / PMI, and RI (138).
- the multiplexed data, CQI / PMI, separately channel-coded RI, and ACK / NACK are channel interleaved to generate an output signal (139).
- RE physical resource element
- FIG. 10 is a diagram illustrating a mapping method of physical resources for uplink data and control channel transmission.
- CQI / PMI and data are mapped onto the RE in a time-first manner.
- the encoded ACK / NACK is punctured around the demodulation reference signal (DM RS) symbol and inserted, and the RI is mapped to the RE next to the RE where the ACK / NACK is located.
- Resources for RI and ACK / NACK may occupy up to four SC-FDMA symbols.
- the concatenation of the CQI / PMI and the data is mapped to the remaining REs except for the RE to which the RI is mapped in a time-first manner.
- the ACK / NACK is mapped while puncturing the concatenation of data with the already mapped CQI / PMI.
- uplink control information such as data and CQI / PMI. Therefore, uplink transmission maintaining a low cubic metric (CM) can be achieved.
- At least one of two transmission schemes of SC-FDMA and cluster DFTs OFDMA on each component carrier for uplink transmission is performed for each user equipment.
- UL-MIMO Uplink-MIMO
- 11 is a flowchart illustrating a method of efficiently multiplexing data and control channels on an uplink shared channel.
- the user equipment recognizes a rank for data of a physical uplink shared channel (PUSCH) (S150). Then, the user equipment is an uplink control channel in the same rank as the rank for the data (the control channel means uplink control information (UCI) such as CQI, ACK / NACK and RI). A rank is set (S151).
- the user device multiplexes the data with the first control information, that is, the CQI in a concatenated manner (S152). Then, the RI is mapped to the designated RE, the concatenated data and the CQI are mapped in a time-first manner, and then the ACK / NACK is punched and mapped to the RE around the DM-RS. Interleaving may be performed (S153).
- the data and the control channel may be modulated with QPSK, 16QAM, 64QAM, etc. according to the MCS table (S154).
- the modulation step may be moved to another position (for example, the modulation block may be moved before the multiplexing step of data and control channel).
- channel interleaving may be performed in units of codewords or may be performed in units of layers.
- FIG. 12 is a block diagram illustrating a method of generating a transmission signal of data and a control channel. The position of each block can be changed in the application manner.
- channel coding is performed for each codeword (160) and rate matching is performed according to the given MCS level and resource size (161).
- the encoded bits may then be scrambled in a cell-specific or UE-specific or codeword-specific manner (162).
- codeword to layer mapping is performed (163).
- an operation of layer shift or permutation may be included.
- FIG. 13 is a diagram illustrating a codeword to layer mapping method.
- the codeword to layer mapping may be performed using the rule illustrated in FIG. 13.
- Control information such as CQI, RI, and ACK / NACK
- CQI, RI, and ACK / NACK is channel coded 165 according to a given specification.
- the CQI, RI, and ACK / NACK may be encoded by using the same channel code for all codewords, or may be encoded by using a different channel code for each codeword.
- the number of encoded bits can then be changed by the bit size control (166).
- the bit size control unit may be unified with the channel coding block 165.
- the signal output from the bit size controller is scrambled (167). In this case, scrambling may be performed cell-specifically, layer-specifically, codeword-specifically, or UE-specifically.
- the bit size control unit may operate as follows.
- the controller recognizes a rank n_rank_pusch of data for the PUSCH.
- the encoded bits may be generated by applying channel coding and rate matching defined in the existing system (eg, LTE Rel-8).
- bit level interleaving may be performed to further randomize each layer. Or equivalently, interleaving may be performed at the modulation symbol level.
- Data for the CQI / PMI channel and the two codewords may be multiplexed by a data / control multiplexer (164). Then, while allowing the ACK / NACK information to be mapped to the RE around the uplink DM-RS in both slots in the subframe, the channel interleaver maps the CQI / PMI according to a time-first mapping method (168).
- Modulation is performed on each layer (169), DFT precoding 170, MIMO precoding 171, RE mapping 172, and the like are sequentially performed. Then, the SC-FDMA signal is generated and transmitted through the antenna port (173).
- the functional blocks are not limited to the position shown in FIG. 12 and may be changed in some cases.
- the scrambling blocks 162 and 167 may be located after the channel interleaving block.
- the codeword to layer mapping block 163 may be located after the channel interleaving block 168 or after the modulation mapper block 169.
- the present invention relates to CQI, RI, and ACK / NACK according to timing of uplink subframe transmission and reception between a backhaul link or an access link in an environment where a macro base station (MeNB) and a relay node (RN) coexist.
- MeNB macro base station
- RN relay node
- an uplink subframe transmission / reception timing between a backhaul link or an access link will be briefly described.
- the present invention will be described based on the LTE system.
- the present invention can be applied to uplink subframe transmit / receive timing in another manner in addition to the uplink subframe transmit / receive timing described below. It is self-evident to those who have knowledge. In particular, it is assumed that the subframe index starts from zero.
- the first uplink subframe transmit / receive timing is a case where a relay node starts backhaul uplink transmission in an SC-FDMA symbol having an index m and stops backhaul uplink transmission in an SC-FDMA symbol having an index n.
- the second uplink subframe transmit / receive timing is a case in which the relay node performs backhaul uplink transmission from the SC-FDMA symbol at index 0 to the last SC-FDMA symbol, and if it is a normal CP, the index of the last SC-FDMA symbol Is 13.
- the second uplink subframe transmission / reception timing a boundary between a backhaul link and an access link is shifted by a predetermined interval, and a transmission / reception switching time of a relay node is puncturing or guarding the last SC-FDMA symbol of the access link. This is the case considered.
- the third uplink subframe transmit / receive timing is when the relay node performs backhaul uplink transmission from the SC-FDMA symbol at index 0 to the SC-FDMA symbol at index 12 or 13, where index 12 or 13 is relayed to the macro base station. It is determined based on propagation delay between nodes and transmission / reception switching times of relay nodes. In particular, the third uplink subframe transmit / receive timing matches the backhaul uplink reception timing of the macro base station and the access uplink reception timing of the relay node, and the transmission / reception switching time of the relay node is the last SC-FDMA of the access link or the backhaul link. This is the case considered by the puncturing of the symbol.
- FIG. 14 is a diagram illustrating uplink subframe transmission and reception timing.
- FIG. 14 illustrates a third uplink subframe transmission / reception timing to which a general CP is applied.
- Tp denotes a propagation delay and G1 and G2 denote a guard period, and when the symbol length is L, (Tp + G1 ⁇ L), (Tp ⁇ G1), and (Tp + L> G2) conditions are satisfied. .
- the last symbol of the backhaul uplink subframe that is, the symbol of index 13
- the last symbol of the access uplink subframe that is, the symbol of index 13
- the last symbol of the backhaul uplink subframe is punctured due to the time G2 at which the relay node switches from transmit mode to receive mode.
- the transmission start point of the access uplink subframe is advanced by Tp to match the backhaul uplink reception timing of the macro base station with the access uplink reception timing of the relay node
- the last symbol of the access uplink subframe Is punctured because it overlaps with the symbol at index 0 of the backhaul uplink subframe and also requires the time G1 at which the relay node switches from the receive mode to the transmit mode.
- FIG. 15 is another diagram illustrating uplink subframe transmission / reception timing. Similarly, FIG. 15 illustrates a third uplink subframe transmission / reception timing to which a general CP is applied.
- the maximum value of Tp is increased, which causes not only the last symbol of the access uplink subframe but also the previous symbol, for example, a symbol having index 12 for a general CP and an index for an extended CP. A situation where a symbol of 10 is also punctured may occur.
- 16 is another diagram illustrating uplink subframe transmission / reception timing.
- symbols of index 12 and index 13 of a backhaul uplink subframe to which a normal CP is applied are punctured by a relay node in a TDD system due to a propagation delay.
- the reason why the relay node cannot transmit symbols 12 and 13 of the backhaul uplink subframe is to advance transmission start point of the backhaul uplink subframe by Tp, so that the first two symbols are TDD. This is because the backhaul uplink subframe boundary configured in the system is out of range.
- FIG. 17 is a diagram illustrating a mapping order of control information when a general CP is applied in an LTE system
- FIG. 18 is a diagram illustrating a mapping order of control information when an extended CP is applied in an LTE system.
- the same number of modulation symbols required for RI and ACK / NACK information mapping is 16.
- RI information is mapped to symbol indexes 1, 5, 8, and 12, and ACK / NACK information is mapped to symbol indexes 2, 4, 9, and 11.
- RI information is mapped to symbol indexes 0, 4, 6, and 10
- ACK / NACK information is mapped to symbol indexes 1, 3, 7, and 9.
- RI symbols are mapped, for example, a symbol having index 12 of FIG. 17. And a problem that a symbol at index 10 of FIG. 18 is lost.
- the present invention proposes a method of preventing loss of control information that may occur when some symbols of an uplink subframe are punctured when the above-described third uplink subframe timing is applied. Furthermore, the present invention can be extended and applied not only to the situation in which the third uplink subframe timing is applied but also to various cases in which some symbols of the uplink subframe are not punctured or used.
- the symbol index to which the RI information is mapped in the PUSCH to a symbol having indexes 5 and 8 in the case of a general CP and a symbol having indexes 4 and 6 in the case of an extended CP.
- the maximum number of (modulation) symbols is limited to 2 ⁇ M PUSCH sc
- M PUSCH sc is a bandwidth scheduled for PUSCH transmission of a transport block in a current subframe and is represented by the number of subcarriers.
- FIG. 19 illustrates an example of mapping control information according to the first embodiment of the present invention when a general CP is applied
- FIG. 20 illustrates an example of mapping control information according to the first embodiment of the present invention when an extended CP is applied. Shows. In FIG. 19 and FIG. 20, it is assumed that the number of modulation symbols required for RI information is 16.
- FIG. 19 and FIG. 20 it is assumed that the number of modulation symbols required for RI information is 16.
- the symbol index to which RI information is mapped in the PUSCH is limited to a symbol having indexes 1, 5 and 8 in the case of a general CP, and a symbol having indexes 0, 4 and 6 in the case of an extended CP. Suggest.
- the maximum number of (modulation) symbols is limited to 3 x M PUSCH sc .
- FIG. 21 illustrates an example of mapping control information according to the second embodiment of the present invention when a general CP is applied
- FIG. 22 illustrates an example of mapping control information according to the second embodiment of the present invention when an extended CP is applied. Shows. 21 and 22, it is assumed that the number of modulation symbols required for RI information is 16.
- FIG. 23 is a diagram illustrating uplink subframe transmission / reception timing to which an embodiment of the present invention can be applied. Similarly, FIG. 23 also assumes the case where the above-described third uplink subframe timing is applied.
- FIG. 23 illustrates a case in which a transmission start point of a backhaul uplink subframe is advanced by Tp in order to match uplink subframe reception timing of a macro base station with uplink subframe reception timing of a relay node.
- the first symbol and the second symbol overlap with the symbols at indexes 11 and 12 of the access uplink subframe and are punctured.
- the symbol at index 13, which is the last symbol of the access uplink subframe is not only overlapped with the symbol at index 2 of the backhaul uplink subframe due to Tp, but also the time for which the relay node switches from the reception mode to the transmission mode. Perforation due to (G1).
- loss of RI information may be caused when a general CP is applied, and RI and ACK when an extended CP is applied. / NACK may cause loss of information.
- RI information may be mapped according to the first embodiment, and further, RI information may be mapped as in the third embodiment below.
- ACK / NACK information may be mapped to the fourth and fifth embodiments below.
- the symbol index to which RI information is mapped in the PUSCH is limited to a symbol having indexes 5, 8 and 12 in the case of a general CP, and a symbol having indexes 4, 6 and 10 in the case of an extended CP. Suggest.
- the maximum number of (modulation) symbols is limited to 3 x M PUSCH sc .
- FIG. 24 illustrates an example of mapping control information according to the third embodiment of the present invention when a general CP is applied
- FIG. 25 illustrates an example of mapping control information according to the third embodiment of the present invention when an extended CP is applied. Shows. 24 and 25, it is assumed that the number of modulation symbols required for RI information is 16.
- the fourth embodiment of the present invention it is proposed to limit the symbol indexes to which the ACK / NACK information is mapped on the PUSCH in the subframe to which the extended CP is applied, to symbols having indexes 3 and 7.
- the maximum number of (modulation) symbols is limited to 2 x M PUSCH sc .
- FIG. 26 shows an example of mapping control information according to the fourth embodiment of the present invention when extended CP is applied, and assumes that the number of modulation symbols required for ACK / NACK information is 16.
- the symbol index to which the ACK / NACK information is mapped on the PUSCH in a subframe to which the extended CP is applied to a symbol having indexes 3, 7, and 9.
- the maximum number of (modulation) symbols is limited to 3 x M PUSCH sc .
- FIG. 27 shows an example of mapping control information according to the fifth embodiment of the present invention when an extended CP is applied, and assumes that 16 modulation symbols are required for ACK / NACK information.
- FIG. 28 illustrates a block diagram of a communication device according to an embodiment of the present invention.
- the communication device 2800 includes a processor 2810, a memory 2820, an RF module 2830, a display module 2840, and a user interface module 2850.
- the communication device 2800 is shown for convenience of description and some modules may be omitted. In addition, the communication device 2800 may further include necessary modules. In addition, some modules in the communication device 2800 may be classified into more granular modules.
- the processor 2810 is configured to perform an operation according to the embodiment of the present invention illustrated with reference to the drawings. In detail, the detailed operation of the processor 2810 may refer to the contents described with reference to FIGS. 1 to 27.
- the memory 2820 is connected to the processor 2810 and stores an operating system, an application, program code, data, and the like.
- the RF module 2830 is connected to the processor 2810 and performs a function of converting a baseband signal into a radio signal or converting a radio signal into a baseband signal. To this end, the RF module 2830 performs analog conversion, amplification, filtering and frequency up-conversion, or a reverse process thereof.
- the display module 2840 is connected to the processor 2810 and displays various information.
- the display module 2840 may use well-known elements such as, but not limited to, a liquid crystal display (LCD), a light emitting diode (LED), and an organic light emitting diode (OLED).
- the user interface module 2850 is connected to the processor 2810 and may be configured with a combination of well-known user interfaces such as a keypad and a touch screen.
- embodiments of the present invention have been mainly described based on data transmission / reception relations between a relay node and a base station.
- Certain operations described in this document as being performed by a base station may in some cases be performed by an upper node thereof. That is, it is obvious that various operations performed for communication with the terminal in a network including a plurality of network nodes including a base station may be performed by the base station or other network nodes other than the base station.
- a base station may be replaced by terms such as a fixed station, a Node B, an eNode B (eNB), an access point, and the like.
- Embodiments according to the present invention may be implemented by various means, for example, hardware, firmware, software, or a combination thereof.
- an embodiment of the present invention may include one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), FPGAs ( field programmable gate arrays), processors, controllers, microcontrollers, microprocessors, and the like.
- ASICs application specific integrated circuits
- DSPs digital signal processors
- DSPDs digital signal processing devices
- PLDs programmable logic devices
- FPGAs field programmable gate arrays
- processors controllers, microcontrollers, microprocessors, and the like.
- an embodiment of the present invention may be implemented in the form of a module, procedure, function, etc. that performs the functions or operations described above.
- the software code may be stored in a memory unit and driven by a processor.
- the memory unit may be located inside or outside the processor, and may exchange data with the processor by various known means.
- the method and apparatus for transmitting uplink control information in the wireless communication system in the wireless communication system as described above have been described with reference to an example applied to the 3GPP LTE system, but it is applicable to various wireless communication systems in addition to the 3GPP LTE system. It is possible.
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Abstract
Description
Claims (16)
- 무선 통신 시스템에서 릴레이 노드가 기지국으로 상향링크 제어 정보를 송신하기 위한 자원을 할당하는 방법에 있어서,상기 릴레이 노드와 상기 기지국 간의 백홀 하향링크에 대한 제어 정보 시퀀스를 생성하는 단계;상기 릴레이 노드와 상기 기지국 간의 백홀 상향링크 서브프레임의 전단 또는 후단에서 복수의 심볼들이 천공(Puncturing)되는 경우, 상기 제어 정보 시퀀스를 맵핑하기 위한 심볼들을 설정하는 단계; 및상기 제어 정보 시퀀스를 상기 설정된 심볼들에 대응하는 자원 요소들에 부반송파 인덱스의 내림차순으로 시간 우선 맵핑(time-first mapping)을 수행하는 단계를 포함하는 것을 특징으로 하는,자원 할당 방법.
- 제 1 항에 있어서,일반 순환전치(Normal Cyclic Prefix)가 적용된 상기 백홀 상향링크 서브프레임의 후단에서 복수의 심볼들이 천공되는 경우, 상기 제어 정보 시퀀스를 맵핑하기 위한 심볼들은 인덱스 5 및 인덱스 8로 설정되는 것을 특징으로 하는,자원 할당 방법.
- 제 1 항에 있어서,일반 순환전치(Normal Cyclic Prefix)가 적용된 상기 백홀 상향링크 서브프레임의 후단에서 복수의 심볼들이 천공되는 경우, 상기 제어 정보 시퀀스를 맵핑하기 위한 심볼들은 인덱스 1, 인덱스 5 및 인덱스 8로 설정되는 것을 특징으로 하는,자원 할당 방법.
- 제 1 항에 있어서,일반 순환전치(Normal Cyclic Prefix)가 적용된 상기 백홀 상향링크 서브프레임의 전단에서 복수의 심볼들이 천공되는 경우, 상기 제어 정보 시퀀스를 맵핑하기 위한 심볼들은 인덱스 5, 인덱스 8 및 인덱스 12로 설정되는 것을 특징으로 하는,자원 할당 방법.
- 제 2 항 내지 제 4 항 중 하나에 있어서,상기 백홀 하향링크에 대한 제어 정보는,랭크 지시자(Rank Indicator)인 것을 특징으로 하는,자원 할당 방법.
- 제 1 항에 있어서,확장 순환전치(Extended Cyclic Prefix)가 적용된 상기 백홀 상향링크 서브프레임의 전단에서 복수의 심볼들이 천공되는 경우, 상기 제어 정보 시퀀스를 맵핑하기 위한 심볼들은 인덱스 3 및 인덱스 7로 설정되는 것을 특징으로 하는,자원 할당 방법.
- 제 1 항에 있어서,확장 순환전치(Extended Cyclic Prefix)가 적용된 상기 백홀 상향링크 서브프레임의 전단에서 복수의 심볼들이 천공되는 경우, 상기 제어 정보 시퀀스를 맵핑하기 위한 심볼들은 인덱스 3, 인덱스 7 및 인덱스 9로 설정되는 것을 특징으로 하는,자원 할당 방법.
- 제 6항 또는 제 7 항에 있어서,상기 백홀 하향링크에 대한 제어 정보는,ACK/NACK(Acknowledgement/Negative ACK) 정보인 것을 특징으로 하는,자원 할당 방법.
- 무선 통신 시스템에서의 릴레이 노드로서,상기 릴레이 노드와 기지국 간의 백홀 하향링크에 대한 제어 정보 시퀀스를 생성하고, 상기 릴레이 노드와 상기 기지국 간의 백홀 상향링크 서브프레임의 전단 또는 후단에서 복수의 심볼들이 천공(Puncturing)되는 경우 상기 제어 정보 시퀀스를 맵핑하기 위한 심볼들을 설정하며, 상기 제어 정보 시퀀스를 상기 설정된 심볼들에 대응하는 자원 요소들에 부반송파 인덱스의 내림차순으로 시간 우선 맵핑(time-first mapping)을 수행하는 프로세서; 및상기 맵핑된 제어 정보 시퀀스를 상기 기지국으로 송신하기 위한 송신 모듈을 포함하는 것을 특징으로 하는,릴레이 노드.
- 제 9 항에 있어서,상기 프로세서는,일반 순환전치(Normal Cyclic Prefix)가 적용된 상기 백홀 상향링크 서브프레임의 후단에서 복수의 심볼들이 천공되는 경우, 상기 제어 정보 시퀀스를 맵핑하기 위한 심볼들은 인덱스 5 및 인덱스 8로 설정하는 것을 특징으로 하는,릴레이 노드.
- 제 9 항에 있어서,상기 프로세서는,일반 순환전치(Normal Cyclic Prefix)가 적용된 상기 백홀 상향링크 서브프레임의 후단에서 복수의 심볼들이 천공되는 경우, 상기 제어 정보 시퀀스를 맵핑하기 위한 심볼들은 인덱스 1, 인덱스 5 및 인덱스 8로 설정하는 것을 특징으로 하는,릴레이 노드.
- 제 9 항에 있어서,상기 프로세서는,일반 순환전치(Normal Cyclic Prefix)가 적용된 상기 백홀 상향링크 서브프레임의 전단에서 복수의 심볼들이 천공되는 경우, 상기 제어 정보 시퀀스를 맵핑하기 위한 심볼들은 인덱스 5, 인덱스 8 및 인덱스 12로 설정하는 것을 특징으로 하는,릴레이 노드.
- 제 10 항 내지 제 12 항 중 하나에 있어서,상기 백홀 하향링크에 대한 제어 정보는,랭크 지시자(Rank Indicator)인 것을 특징으로 하는,릴레이 노드.
- 제 9 항에 있어서,상기 프로세서는,확장 순환전치(Extended Cyclic Prefix)가 적용된 상기 백홀 상향링크 서브프레임의 전단에서 복수의 심볼들이 천공되는 경우, 상기 제어 정보 시퀀스를 맵핑하기 위한 심볼들은 인덱스 3 및 인덱스 7로 설정하는 것을 특징으로 하는,릴레이 노드.
- 제 9 항에 있어서,상기 프로세서는,확장 순환전치(Extended Cyclic Prefix)가 적용된 상기 백홀 상향링크 서브프레임의 전단에서 복수의 심볼들이 천공되는 경우, 상기 제어 정보 시퀀스를 맵핑하기 위한 심볼들은 인덱스 3, 인덱스 7 및 인덱스 9로 설정하는 것을 특징으로 하는,릴레이 노드.
- 제 14항 또는 제 15 항에 있어서,상기 백홀 하향링크에 대한 제어 정보는,ACK/NACK(Acknowledgement/Negative ACK) 정보인 것을 특징으로 하는,릴레이 노드.
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US13/976,360 US9084246B2 (en) | 2011-01-03 | 2012-01-03 | Method for transmitting uplink control information in wireless communication system and apparatus therefor |
KR1020137015160A KR101964647B1 (ko) | 2011-01-03 | 2012-01-03 | 무선 통신 시스템에서 상향링크 제어 정보를 전송하는 방법 및 이를 위한 장치 |
CN201280004618.4A CN103314539B (zh) | 2011-01-03 | 2012-01-03 | 在无线通信系统中发送上行链路控制信息的方法及其设备 |
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WO2013085307A1 (ko) * | 2011-12-06 | 2013-06-13 | 엘지전자 주식회사 | 무선 통신 시스템에서 원격 송신국의 제어 방법 및 장치 |
CN103378954B (zh) * | 2012-04-20 | 2019-03-15 | 北京三星通信技术研究有限公司 | 支持发送分集和信道选择的分配harq-ack信道资源的方法 |
USRE49468E1 (en) * | 2012-10-24 | 2023-03-21 | Samsung Electronics Co., Ltd | Method and apparatus for transmitting and receiving common channel information in wireless communication system |
US10673556B2 (en) * | 2015-01-09 | 2020-06-02 | Lg Electronics Inc. | Method for transmitting control information, and apparatus therefor |
US10680687B2 (en) | 2016-02-04 | 2020-06-09 | Lg Electronics Inc. | Method for mapping, transmitting, or receiving uplink control information in wireless communication system and device for same |
US10375707B2 (en) * | 2016-08-04 | 2019-08-06 | Qualcomm Incorporated | Dynamic resource allocation in wireless network |
US10595332B2 (en) * | 2016-09-30 | 2020-03-17 | Qualcomm Incorporated | Aligning slots allocated to extended cyclic prefix symbols with slots allocated to normal cyclic prefix symbols |
WO2018128492A1 (ko) * | 2017-01-08 | 2018-07-12 | 엘지전자 주식회사 | 무선 통신 시스템에서 단말의 상향링크 신호 전송 방법 및 이를 지원하는 장치 |
US10609699B2 (en) * | 2017-03-16 | 2020-03-31 | Kt Corporation | Method for monitoring, transmitting, and receiving downlink pre-emption indication information in new radio networks and apparatus thereof |
US10873920B2 (en) * | 2017-10-09 | 2020-12-22 | Qualcomm Incorporated | Timing and frame structure in an integrated access backhaul (IAB) network |
JP7080619B2 (ja) * | 2017-11-15 | 2022-06-06 | シャープ株式会社 | 端末装置及び通信方法 |
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US10701667B2 (en) * | 2018-04-09 | 2020-06-30 | Qualcomm Incorporated | Paging techniques in a wireless backhaul network |
KR20200129485A (ko) | 2019-05-08 | 2020-11-18 | 삼성전자주식회사 | 무선 통신 시스템에서 대기의 덕팅에 의한 간섭 제어 방법 및 장치 |
CN114128334A (zh) * | 2019-07-09 | 2022-03-01 | 瑞典爱立信有限公司 | 用于集成接入和回程的映射信息 |
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- 2012-01-03 CN CN201280004618.4A patent/CN103314539B/zh not_active Expired - Fee Related
- 2012-01-03 KR KR1020137015160A patent/KR101964647B1/ko active IP Right Grant
- 2012-01-03 US US13/976,360 patent/US9084246B2/en active Active
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CN103314539A (zh) | 2013-09-18 |
KR101964647B1 (ko) | 2019-04-02 |
US20130272189A1 (en) | 2013-10-17 |
US9084246B2 (en) | 2015-07-14 |
CN103314539B (zh) | 2015-11-25 |
WO2012093826A3 (ko) | 2012-09-20 |
KR20140017502A (ko) | 2014-02-11 |
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