WO2018062766A1 - 무선 통신 시스템에서 복수의 프로세싱 시간 또는 복수의 전송 시간 간격을 위한 방법 및 이를 위한 장치 - Google Patents
무선 통신 시스템에서 복수의 프로세싱 시간 또는 복수의 전송 시간 간격을 위한 방법 및 이를 위한 장치 Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
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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
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
- H04W8/24—Transfer of terminal data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
- H04L1/1819—Hybrid protocols; Hybrid automatic repeat request [HARQ] with retransmission of additional or different redundancy
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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
- 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
- H04L5/0078—Timing of allocation
- H04L5/0082—Timing of allocation at predetermined intervals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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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
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
- H04W80/08—Upper layer protocols
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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
Definitions
- the present invention relates to a wireless communication system, and more particularly, to a method and apparatus for a plurality of processing time or a plurality of transmission time intervals.
- Latency in packet data is one of the important performance metrics, and reducing it and providing faster Internet access to end users is not only in LTE, but also in the design of next-generation mobile systems, the so-called new RAT.
- new RAT One of the important tasks.
- the present invention intends to deal with the content of uplink transmission such as HARQ feedback or uplink data transmission in a wireless communication system supporting such a reduction in latency.
- the present invention supports the performance reporting of a terminal having a plurality of processing times in carrier aggregation, the operation of the terminal according to the carrier merging and a plurality of processing times, and a short transmission time interval or a plurality of transmission time intervals in the carrier merging. It relates to the operation of the terminal.
- the method may be performed by a terminal and the terminal may support a short processing time when carrier aggregation is configured. Reporting whether there is a base station; Determining a processing time to be used by the terminal when cross carrier aggregation is configured for the terminal; And performing an uplink transmission operation according to the determined processing time.
- reporting whether the short processing time can be supported may include whether the short processing time can be supported for each number of carriers or groups of carrier numbers used for the carrier aggregation.
- reporting of whether the short processing time can be supported may be provided per band or per band-combination.
- the report of whether the short processing time can be supported may include information on the processing time supportable by the band or by the band-combination.
- the reporting of whether the short processing time can be supported may include information on the maximum number of carriers supported by the short processing time per band or per band-combination.
- the processing time to be used by the terminal may be determined as a predetermined processing time.
- the processing time of the two serving cells may be the same.
- the uplink transmission operation may include a hybrid automatic repeat request (HARQ) feedback transmission operation according to downlink data reception or an uplink data transmission operation according to uplink approval reception.
- HARQ hybrid automatic repeat request
- the terminal can be configured to support more than one processing time.
- each downlink data may be limited to one codeword.
- the timing of HARQ feedback for downlink data reception according to different processing time overlaps if the downlink data scheduled by the specific downlink control information is two codewords, the two codewords HARQ feedback for may be bundled.
- the downlink short TTI of each cell may be a cell, cell group, or physical uplink control channel.
- control channel PUCCH may be configured for each cell group.
- the uplink short TTI of each cell may be a cell, cell group, or physical uplink control channel.
- control channel PUCCH may be configured for each cell group.
- a terminal supporting carrier aggregation and short processing time the terminal includes: a receiver and a transmitter; And a processor for controlling the receiver and the transmitter, wherein the processor reports to the base station whether the terminal can support a short processing time when the carrier aggregation is configured through the transmitter, and cross-carrier aggregation to the terminal. If this is set, it is possible to determine the processing time to be used by the terminal and to perform an uplink transmission operation according to the determined processing time.
- uplink transmission may be efficiently performed.
- FIG. 1 illustrates an example of a radio frame structure used in a wireless communication system.
- FIG. 2 illustrates an example of a downlink / uplink (DL / UL) slot structure in a wireless communication system.
- FIG 3 illustrates a downlink (DL) subframe structure used in a 3GPP LTE / LTE-A system.
- FIG. 4 illustrates an example of an uplink (UL) subframe structure used in a 3GPP LTE / LTE-A system.
- FIG. 5 illustrates an operation of a terminal according to an embodiment of the present invention.
- FIG. 6 shows a block diagram of an apparatus for implementing an embodiment (s) of the present invention.
- a user equipment may be fixed or mobile, and various devices which transmit and receive user data and / or various control information by communicating with a base station (BS) belong to this.
- the UE may be a terminal equipment (MS), a mobile station (MS), a mobile terminal (MT), a user terminal (UT), a subscriber station (SS), a wireless device, a personal digital assistant (PDA), or a wireless modem. It may be called a modem, a handheld device, or the like.
- a BS generally refers to a fixed station communicating with the UE and / or another BS, and communicates with the UE and another BS to exchange various data and control information.
- BS includes Advanced Base Station (ABS), Node-B (NB), evolved-NodeB (eNB), Base Transceiver System (BTS), Access Point, Processing Server (PS), Transmission Point (TP) May be called in other terms.
- ABS Advanced Base Station
- NB Node-B
- eNB evolved-NodeB
- BTS Base Transceiver System
- PS Processing Server
- TP Transmission Point
- BS is collectively referred to as eNB.
- a node refers to a fixed point capable of transmitting / receiving a radio signal by communicating with a user equipment.
- Various forms of eNBs may be used as nodes regardless of their name.
- the node may be a BS, an NB, an eNB, a pico-cell eNB (PeNB), a home eNB (HeNB), a relay, a repeater, and the like.
- the node may not be an eNB.
- it may be a radio remote head (RRH), a radio remote unit (RRU).
- RRHs, RRUs, etc. generally have a power level lower than the power level of the eNB.
- RRH or RRU, RRH / RRU is generally connected to an eNB by a dedicated line such as an optical cable
- RRH / RRU and eNB are generally compared to cooperative communication by eNBs connected by a wireless line.
- cooperative communication can be performed smoothly.
- At least one antenna is installed at one node.
- the antenna may mean a physical antenna or may mean an antenna port, a virtual antenna, or an antenna group.
- Nodes are also called points. Unlike conventional centralized antenna systems (ie, single node systems) where antennas are centrally located at base stations and controlled by one eNB controller, in a multi-node system A plurality of nodes are typically located farther apart than a predetermined interval.
- the plurality of nodes may be managed by one or more eNBs or eNB controllers that control the operation of each node or schedule data to be transmitted / received through each node.
- Each node may be connected to the eNB or eNB controller that manages the node through a cable or dedicated line.
- the same cell identifier (ID) may be used or different cell IDs may be used for signal transmission / reception to / from a plurality of nodes.
- ID cell identifier
- each of the plurality of nodes behaves like some antenna group of one cell.
- a multi-node system may be regarded as a multi-cell (eg, macro-cell / femto-cell / pico-cell) system.
- the network formed by the multiple cells is particularly called a multi-tier network.
- the cell ID of the RRH / RRU and the cell ID of the eNB may be the same or may be different.
- both the RRH / RRU and the eNB operate as independent base stations.
- one or more eNB or eNB controllers connected with a plurality of nodes may control the plurality of nodes to simultaneously transmit or receive signals to the UE via some or all of the plurality of nodes.
- multi-node systems depending on the identity of each node, the implementation of each node, etc., these multi-nodes in that multiple nodes together participate in providing communication services to the UE on a given time-frequency resource.
- the systems are different from single node systems (eg CAS, conventional MIMO system, conventional relay system, conventional repeater system, etc.).
- embodiments of the present invention regarding a method for performing data cooperative transmission using some or all of a plurality of nodes may be applied to various kinds of multi-node systems.
- a node generally refers to an antenna group spaced apart from another node by a predetermined distance or more
- embodiments of the present invention described later may be applied even when the node means any antenna group regardless of the interval.
- the eNB may control the node configured as the H-pol antenna and the node configured as the V-pol antenna, and thus embodiments of the present invention may be applied. .
- a communication scheme that enables different nodes to receive the uplink signal is called multi-eNB MIMO or CoMP (Coordinated Multi-Point TX / RX).
- Cooperative transmission schemes among such cooperative communication between nodes can be largely classified into joint processing (JP) and scheduling coordination.
- the former may be divided into joint transmission (JT) / joint reception (JR) and dynamic point selection (DPS), and the latter may be divided into coordinated scheduling (CS) and coordinated beamforming (CB).
- DPS is also called dynamic cell selection (DCS).
- JP Joint Processing Protocol
- JR refers to a communication scheme in which a plurality of nodes receive the same stream from the UE.
- the UE / eNB combines the signals received from the plurality of nodes to recover the stream.
- the reliability of signal transmission may be improved by transmit diversity.
- DPS in JP refers to a communication technique in which a signal is transmitted / received through one node selected according to a specific rule among a plurality of nodes.
- DPS since a node having a good channel condition between the UE and the node will be selected as a communication node, the reliability of signal transmission can be improved.
- a cell refers to a certain geographic area in which one or more nodes provide a communication service. Therefore, in the present invention, communication with a specific cell may mean communication with an eNB or a node that provides a communication service to the specific cell.
- the downlink / uplink signal of a specific cell means a downlink / uplink signal from / to an eNB or a node that provides a communication service to the specific cell.
- the cell providing uplink / downlink communication service to the UE is particularly called a serving cell.
- the channel state / quality of a specific cell means a channel state / quality of a channel or communication link formed between an eNB or a node providing a communication service to the specific cell and a UE.
- a UE transmits a downlink channel state from a specific node on a channel CSI-RS (Channel State Information Reference Signal) resource to which the antenna port (s) of the specific node is assigned to the specific node. Can be measured using CSI-RS (s).
- CSI-RS Channel State Information Reference Signal
- adjacent nodes transmit corresponding CSI-RS resources on CSI-RS resources orthogonal to each other.
- Orthogonality of CSI-RS resources means that the CSI-RS is allocated by CSI-RS resource configuration, subframe offset, and transmission period that specify symbols and subcarriers carrying the CSI-RS. This means that at least one of a subframe configuration and a CSI-RS sequence for specifying the specified subframes are different from each other.
- Physical Downlink Control CHannel / Physical Control Format Indicator CHannel (PCFICH) / PHICH (Physical Hybrid automatic retransmit request Indicator CHannel) / PDSCH (Physical Downlink Shared CHannel) are respectively DCI (Downlink Control Information) / CFI ( Means a set of time-frequency resources or a set of resource elements that carry downlink format ACK / ACK / NACK (ACKnowlegement / Negative ACK) / downlink data, and also a Physical Uplink Control CHannel (PUCCH) / Physical (PUSCH) Uplink Shared CHannel / PACH (Physical Random Access CHannel) means a set of time-frequency resources or a set of resource elements that carry uplink control information (UCI) / uplink data / random access signals, respectively.
- DCI Downlink Control Information
- CFI Means a set of time-frequency resources or a set of resource elements that carry downlink format ACK / ACK
- the PDCCH / PCFICH / PHICH / PDSCH / PUCCH / PUSCH / PRACH resource is referred to below:
- the expression that the user equipment transmits the PUCCH / PUSCH / PRACH is hereinafter referred to as uplink control information / uplink on or through PUSCH / PUCCH / PRACH, respectively.
- PDCCH / PCFICH / PHICH / PDSCH is used for downlink data / control information on or through PDCCH / PCFICH / PHICH / PDSCH, respectively. It is used in the same sense as sending it.
- Figure 1 illustrates an example of a radio frame structure used in a wireless communication system.
- Figure 1 (a) shows a frame structure for frequency division duplex (FDD) used in the 3GPP LTE / LTE-A system
- Figure 1 (b) is used in the 3GPP LTE / LTE-A system
- the frame structure for time division duplex (TDD) is shown.
- a radio frame used in a 3GPP LTE / LTE-A system has a length of 10 ms (307200 Ts), and is composed of 10 equally sized subframes (SF). Numbers may be assigned to 10 subframes in one radio frame.
- Each subframe has a length of 1 ms and consists of two slots. 20 slots in one radio frame may be sequentially numbered from 0 to 19. Each slot is 0.5ms long.
- the time for transmitting one subframe is defined as a transmission time interval (TTI).
- the time resource may be classified by a radio frame number (also called a radio frame index), a subframe number (also called a subframe number), a slot number (or slot index), and the like.
- the radio frame may be configured differently according to the duplex mode. For example, in the FDD mode, since downlink transmission and uplink transmission are divided by frequency, a radio frame includes only one of a downlink subframe or an uplink subframe for a specific frequency band. In the TDD mode, since downlink transmission and uplink transmission are separated by time, a radio frame includes both a downlink subframe and an uplink subframe for a specific frequency band.
- Table 1 illustrates a DL-UL configuration of subframes in a radio frame in the TDD mode.
- D represents a downlink subframe
- U represents an uplink subframe
- S represents a special subframe.
- the singular subframe includes three fields of Downlink Pilot TimeSlot (DwPTS), Guard Period (GP), and Uplink Pilot TimeSlot (UpPTS).
- DwPTS is a time interval reserved for downlink transmission
- UpPTS is a time interval reserved for uplink transmission.
- Table 2 illustrates the configuration of a singular frame.
- FIG. 2 illustrates an example of a downlink / uplink (DL / UL) slot structure in a wireless communication system.
- FIG. 2 shows a structure of a resource grid of a 3GPP LTE / LTE-A system. There is one resource grid per antenna port.
- a slot includes a plurality of Orthogonal Frequency Division Multiplexing (OFDM) symbols in the time domain and a plurality of resource blocks (RBs) in the frequency domain.
- OFDM symbol may mean a symbol period.
- the signal transmitted in each slot is * Subcarriers and It may be represented by a resource grid composed of OFDM symbols.
- Represents the number of resource blocks (RBs) in the downlink slot Represents the number of RBs in the UL slot.
- Wow Depends on the DL transmission bandwidth and the UL transmission bandwidth, respectively.
- Denotes the number of OFDM symbols in the downlink slot Denotes the number of OFDM symbols in the UL slot.
- the OFDM symbol may be called an OFDM symbol, a Single Carrier Frequency Division Multiplexing (SC-FDM) symbol, or the like according to a multiple access scheme.
- the number of OFDM symbols included in one slot may vary depending on the channel bandwidth and the length of the cyclic prefix (CP). For example, in case of a normal CP, one slot includes 7 OFDM symbols, whereas in case of an extended CP, one slot includes 6 OFDM symbols.
- FIG. 2 illustrates a subframe in which one slot includes 7 OFDM symbols for convenience of description, embodiments of the present invention can be applied to subframes having other numbers of OFDM symbols in the same manner. 2, each OFDM symbol, in the frequency domain, * Subcarriers are included.
- the types of subcarriers may be divided into data subcarriers for data transmission, reference signal subcarriers for transmission of reference signals, null subcarriers for guard band, and direct current (DC) components.
- the null subcarrier for the DC component is a subcarrier left unused and is mapped to a carrier frequency f0 during an OFDM signal generation process or a frequency upconversion process.
- the carrier frequency is also called the center frequency.
- 1 RB in the time domain It is defined as (eg, seven) consecutive OFDM symbols, and is defined by c (for example 12) consecutive subcarriers in the frequency domain.
- a resource composed of one OFDM symbol and one subcarrier is called a resource element (RE) or tone. Therefore, one RB is * It consists of three resource elements.
- Each resource element in the resource grid may be uniquely defined by an index pair (k, 1) in one slot. k is from 0 in the frequency domain * Index given up to -1, where l is from 0 in the time domain Index given up to -1.
- Two RBs one in each of two slots of the subframe, occupying the same consecutive subcarriers, are called a physical resource block (PRB) pair.
- PRB physical resource block
- Two RBs constituting a PRB pair have the same PRB number (or also referred to as a PRB index).
- VRB is a kind of logical resource allocation unit introduced for resource allocation.
- VRB has the same size as PRB.
- FIG 3 illustrates a downlink (DL) subframe structure used in a 3GPP LTE / LTE-A system.
- a DL subframe is divided into a control region and a data region in the time domain.
- up to three (or four) OFDM symbols located in the first slot of a subframe correspond to a control region to which a control channel is allocated.
- a resource region available for PDCCH transmission in a DL subframe is called a PDCCH region.
- the remaining OFDM symbols other than the OFDM symbol (s) used as the control region correspond to a data region to which a Physical Downlink Shared CHannel (PDSCH) is allocated.
- PDSCH Physical Downlink Shared CHannel
- a resource region available for PDSCH transmission in a DL subframe is called a PDSCH region.
- Examples of DL control channels used in 3GPP LTE include a physical control format indicator channel (PCFICH), a physical downlink control channel (PDCCH), a physical hybrid ARQ indicator channel (PHICH), and the like.
- the PCFICH is transmitted in the first OFDM symbol of a subframe and carries information about the number of OFDM symbols used for transmission of a control channel within the subframe.
- the PHICH carries a Hybrid Automatic Repeat Request (HARQ) ACK / NACK (acknowledgment / negative-acknowledgment) signal in response to the UL transmission.
- HARQ Hybrid Automatic Repeat Request
- DCI downlink control information
- DL-SCH downlink shared channel
- UL-SCH uplink shared channel
- paging channel a downlink shared channel
- the transmission format and resource allocation information of a downlink shared channel may also be called DL scheduling information or a DL grant, and may be referred to as an uplink shared channel (UL-SCH).
- the transmission format and resource allocation information is also called UL scheduling information or UL grant.
- the DCI carried by one PDCCH has a different size and use depending on the DCI format, and its size may vary depending on a coding rate.
- various formats such as formats 0 and 4 for uplink and formats 1, 1A, 1B, 1C, 1D, 2, 2A, 2B, 2C, 3, and 3A are defined for uplink.
- Hopping flag RB allocation, modulation coding scheme (MCS), redundancy version (RV), new data indicator (NDI), transmit power control (TPC), and cyclic shift DMRS Control information such as shift demodulation reference signal (UL), UL index, CQI request, DL assignment index, HARQ process number, transmitted precoding matrix indicator (TPMI), and precoding matrix indicator (PMI) information
- MCS modulation coding scheme
- RV redundancy version
- NDI new data indicator
- TPC transmit power control
- cyclic shift DMRS Control information such as shift demodulation reference signal (UL), UL index, CQI request, DL assignment index, HARQ process number, transmitted precoding matrix indicator (TPMI), and precoding matrix indicator (PMI) information
- UL shift demodulation reference signal
- CQI request UL assignment index
- HARQ process number transmitted precoding matrix indicator
- PMI precoding matrix indicator
- the DCI format that can be transmitted to the UE depends on the transmission mode (TM) configured in the UE.
- TM transmission mode
- not all DCI formats may be used for a UE configured in a specific transmission mode, but only certain DCI format (s) corresponding to the specific transmission mode may be used.
- the PDCCH is transmitted on an aggregation of one or a plurality of consecutive control channel elements (CCEs).
- CCE is a logical allocation unit used to provide a PDCCH with a coding rate based on radio channel conditions.
- the CCE corresponds to a plurality of resource element groups (REGs). For example, one CCE corresponds to nine REGs and one REG corresponds to four REs.
- REGs resource element groups
- a CCE set in which a PDCCH can be located is defined for each UE.
- the set of CCEs in which a UE can discover its PDCCH is referred to as a PDCCH search space, simply a search space (SS).
- SS search space
- An individual resource to which a PDCCH can be transmitted in a search space is called a PDCCH candidate.
- the collection of PDCCH candidates that the UE will monitor is defined as a search space.
- a search space for each DCI format may have a different size, and a dedicated search space and a common search space are defined.
- the dedicated search space is a UE-specific search space and is configured for each individual UE.
- the common search space is configured for a plurality of UEs.
- An aggregation level defining the search space is as follows.
- One PDCCH candidate corresponds to 1, 2, 4 or 8 CCEs depending on the CCE aggregation level.
- the eNB sends the actual PDCCH (DCI) on any PDCCH candidate in the search space, and the UE monitors the search space to find the PDCCH (DCI).
- monitoring means attempting decoding of each PDCCH in a corresponding search space according to all monitored DCI formats.
- the UE may detect its own PDCCH by monitoring the plurality of PDCCHs. Basically, since the UE does not know where its PDCCH is transmitted, every Pframe attempts to decode the PDCCH until every PDCCH of the corresponding DCI format has detected a PDCCH having its own identifier. It is called blind detection (blind decoding).
- the eNB may transmit data for the UE or the UE group through the data area.
- Data transmitted through the data area is also called user data.
- a physical downlink shared channel (PDSCH) may be allocated to the data area.
- Paging channel (PCH) and downlink-shared channel (DL-SCH) are transmitted through PDSCH.
- the UE may read data transmitted through the PDSCH by decoding control information transmitted through the PDCCH.
- Information indicating to which UE or UE group data of the PDSCH is transmitted, how the UE or UE group should receive and decode PDSCH data, and the like are included in the PDCCH and transmitted.
- a specific PDCCH is masked with a cyclic redundancy check (CRC) with a Radio Network Temporary Identity (RNTI) of "A", a radio resource (eg, a frequency location) of "B” and a transmission of "C".
- CRC cyclic redundancy check
- RNTI Radio Network Temporary Identity
- format information eg, transport block size, modulation scheme, coding information, etc.
- a reference signal (RS) to be compared with the data signal is required.
- the reference signal refers to a signal of a predetermined special waveform that the eNB and the UE know each other, which the eNB transmits to the UE or the eNB, and is also called a pilot.
- Reference signals are divided into a cell-specific RS shared by all UEs in a cell and a demodulation RS (DM RS) dedicated to a specific UE.
- DM RS demodulation RS
- the DM RS transmitted by the eNB for demodulation of downlink data for a specific UE may be specifically referred to as a UE-specific RS.
- the DM RS and the CRS may be transmitted together, but only one of the two may be transmitted.
- the DM RS transmitted by applying the same precoder as the data may be used only for demodulation purposes, and thus RS for channel measurement should be separately provided.
- an additional measurement RS, CSI-RS is transmitted to the UE.
- the CSI-RS is transmitted every predetermined transmission period consisting of a plurality of subframes, unlike the CRS transmitted every subframe, based on the fact that the channel state is relatively not changed over time.
- FIG. 4 illustrates an example of an uplink (UL) subframe structure used in a 3GPP LTE / LTE-A system.
- the UL subframe may be divided into a control region and a data region in the frequency domain.
- One or several physical uplink control channels may be allocated to the control region to carry uplink control information (UCI).
- One or several physical uplink shared channels may be allocated to a data region of a UL subframe to carry user data.
- subcarriers having a long distance based on a direct current (DC) subcarrier are used as a control region.
- subcarriers located at both ends of the UL transmission bandwidth are allocated for transmission of uplink control information.
- the DC subcarrier is a component that is not used for signal transmission and is mapped to a carrier frequency f0 during frequency upconversion.
- the PUCCH for one UE is allocated to an RB pair belonging to resources operating at one carrier frequency in one subframe, and the RBs belonging to the RB pair occupy different subcarriers in two slots.
- the PUCCH allocated in this way is expressed as that the RB pair allocated to the PUCCH is frequency hopped at the slot boundary. However, if frequency hopping is not applied, RB pairs occupy the same subcarrier.
- PUCCH may be used to transmit the following control information.
- SR Service Request: Information used for requesting an uplink UL-SCH resource. It is transmitted using OOK (On-Off Keying) method.
- HARQ-ACK A response to a PDCCH and / or a response to a downlink data packet (eg, codeword) on a PDSCH. This indicates whether the PDCCH or PDSCH is successfully received.
- One bit of HARQ-ACK is transmitted in response to a single downlink codeword, and two bits of HARQ-ACK are transmitted in response to two downlink codewords.
- HARQ-ACK response includes a positive ACK (simple, ACK), negative ACK (hereinafter, NACK), DTX (Discontinuous Transmission) or NACK / DTX.
- the term HARQ-ACK is mixed with HARQ ACK / NACK, ACK / NACK.
- CSI Channel State Information
- MIMO Multiple Input Multiple Output
- RI rank indicator
- PMI precoding matrix indicator
- the amount of uplink control information (UCI) that a UE can transmit in a subframe depends on the number of SC-FDMA available for control information transmission.
- SC-FDMA available for UCI means the remaining SC-FDMA symbol except for the SC-FDMA symbol for transmitting the reference signal in the subframe, and in the case of a subframe including a Sounding Reference Signal (SRS), the last SC of the subframe
- SRS Sounding Reference Signal
- the -FDMA symbol is also excluded.
- the reference signal is used for coherent detection of the PUCCH.
- PUCCH supports various formats according to the transmitted information.
- Table 4 shows mapping relationship between PUCCH format and UCI in LTE / LTE-A system.
- the PUCCH format 1 series is mainly used to transmit ACK / NACK information
- the PUCCH format 2 series is mainly used to carry channel state information (CSI) such as CQI / PMI / RI
- the PUCCH format 3 series is mainly used to transmit ACK / NACK information.
- the transmitted packet is transmitted through a wireless channel
- signal distortion may occur during the transmission process.
- the distortion In order to correctly receive the distorted signal at the receiving end, the distortion must be corrected in the received signal using the channel information.
- a method of transmitting the signal known to both the transmitting side and the receiving side and finding the channel information with the distortion degree when the signal is received through the channel is mainly used.
- the signal is called a pilot signal or a reference signal.
- the reference signal may be divided into an uplink reference signal and a downlink reference signal.
- an uplink reference signal as an uplink reference signal,
- DM-RS Demodulation-Reference Signal
- SRS sounding reference signal
- DM-RS Demodulation-Reference Signal
- CSI-RS Channel State Information Reference Signal
- MBSFN Multimedia Broadcast Single Frequency Network
- Reference signals can be classified into two types according to their purpose. There is a reference signal for obtaining channel information and a reference signal used for data demodulation. In the former, since the UE can acquire channel information on the downlink, it should be transmitted over a wide band, and even if the UE does not receive downlink data in a specific subframe, it should receive the reference signal. It is also used in situations such as handover.
- the latter is a reference signal transmitted together with a corresponding resource when the base station transmits a downlink, and the terminal can demodulate data by performing channel measurement by receiving the reference signal. This reference signal should be transmitted in the area where data is transmitted.
- a physical channel such as PDCCH / PDSCH / PUSCH / PUCCH may set a TTI smaller than 1 msec in order to reduce latency in communication between an eNB and a UE (hereinafter, Each represented by sPDCCH / sPDSCH / sPUSCH / sPUCCH.
- a plurality of physical channels may exist within a single subframe (eg, 1 msec) for a single UE or a plurality of UEs, and each may have a different TTI.
- the TTI may be 1 msec as a general subframe size in the LTE system (hereinafter, referred to as a general TTI), and a short TTI may refer to a smaller value, and may be a single / plural OFDM or SC-FDMA symbol unit.
- a short TTI that is, a case in which the TTI length is smaller than one subframe
- the main feature of the present invention is extended and applied even when the TTI is longer than one subframe or 1 ms or more. This is possible.
- the present invention may be extended.
- the present invention will be described based on LTE, but the contents can be applied to a technology in which other waveform / frame structures such as new radio access technology (RAT) are used.
- RAT new radio access technology
- the TTI is 1ms and remains the same as that of the existing LTE system.
- DL-to-UL timing for example, DL data transmission to DL HARQ feedback transmission, or UL approval transmission to UL data transmission.
- Time may be introduced, and the operation may be called a shortened processing time operation.
- a plurality of serving cells may be configured, and for each, assumption or configuration for short processing time and / or short TTI Assumptions and settings for may be different.
- TTI length is different, it may include a case where numerology such as subcarrier spacing is different.
- short processing time means DL data-to-DL HARQ-ACK timing and / or UL grant-to-UL data timing different from the existing legacy processing time.
- a rule may be defined to report whether the terminal can support a short processing time operation as capability signaling.
- a rule may be defined to apply to all carriers.
- the UE reports whether it can support a short processing time operation according to whether or not to perform the actual CA, or by the number of component carriers (CC) performing the actual CA (or for each range composed of groups of CC number)
- CC component carriers
- a rule may be defined to report whether the UE can support a short processing time operation in a band unit or a band combination unit (per band per band-combination unit).
- the terminal may independently report the capability of supporting a short processing time operation for each CC capable of CA, and as a result, the terminal may be more flexible. For example, a terminal with low processing power reports that short processing time operation can be supported only for one of two CCs capable of CA, while a terminal with a relatively high processing power supports both processing time operation with short CC. You can report this as possible.
- short processing time operations are supported for a particular band unit or band combination unit, they may be reported together for specific capabilities.
- a rule may be defined so that the UE reports on the processing time that can be supported in units of bands or units of band combinations.
- the report on the supportable processing time may be for the shortest processing time that can be supported or in all cases of supportable short processing time (eg, n + 1, n + 2, n + 3 of n + 3). If only 2 and n + 3 are supported, then n + 2, n + 3 can be considered as the shortest possible processing time).
- the UE may define a rule to report the maximum number of CCs that can support a short processing time operation in a specific band in units of bands or band combinations.
- the UE may more precisely report whether or not a short processing time operation is supported for a CC constituting an intra-band continuous CA. For example, even when performing an in-band continuous CA using the bandwidth class C in the band x, it is possible to support a short processing time operation for only some of the CCs of the plurality of CCs constituting the band x. .
- rules may be defined to report independent short processing time operational capability for each CC.
- information on whether a short processing time operation is supported per band unit or band combination unit and / or supportable processing time and / or a maximum number of CCs that can support a short processing time operation may be independently set for each CC in a band. Rules can be defined so that
- the terminal having the CA capability has more extra processing power and may use the same to support shorter processing time for more CCs. Therefore, the UE may define a rule to report the maximum number of CCs that can support a short processing time operation for each CC number performing the actual CA or to define / promise in advance.
- a rule when a terminal having a CA capability receives a setting related to a short processing time operation, a rule may be defined such that only CA operations for a certain number of CCs or less are supported.
- a rule When a terminal having a CA capability receives a configuration related to a short processing time operation, a rule may be defined such that an operation of the CA or the short processing time is disabled.
- the UE may independently report the maximum number of CCs capable of supporting a short processing time operation when performing a CA and the maximum number of CCs capable of supporting a short processing time operation when a CA is not performed, or predefined / Rules can be defined to be promised.
- the maximum transport block (TB) size and / or maximum timing advance (TA) and / or maximum number of transport layers and / or maximum number of transmission PRBs may be defined to be limited by this band or CC.
- the limits may be promised or signaled in advance and may differ independently, in particular by numerology (eg, TTI length or subcarrier spacing, etc.).
- a rule may be defined such that the UE reports a maximum TB size and / or a maximum supported TA and / or a maximum number of transport layers and / or a maximum number of transmission PRBs per band or CC when setting a short processing time operation. .
- a rule may be defined such that the terminal follows the processing time set in the PCell for the CC without a separate (re) setting process for the processing time.
- a rule may be defined such that the terminal follows the maximum (or minimum) processing time among the processing time set for the corresponding CC.
- the first processing time is a timing irrelevant to the short processing time setting, and corresponding DL HARQ feedback or UL data is SF or TTI #. It may be a timing or a time-consuming operation transmitted from n + 4.
- the first processing time is based on a minimum of 4 ms but may be longer than the corresponding value according to the actual DL / UL SF.
- the second processing time may be a newly introduced timing according to the short processing time setting.
- the second processing time is the timing or the like when DL data or UL grant is transmitted in SF or TTI #n, and corresponding DL HARQ feedback or UL data is transmitted in SF or TTI # n + 3. May be a time-consuming operation.
- TDD it is a minimum 3ms standard but may be longer than the corresponding value according to the actual DL / UL SF.
- the first processing time is used during a fallback operation (e.g. PDSCH / PUSCH scheduling with common search space (CSS) DCI and / or PDSCH scheduling with DCI format 1A or general RNTI use).
- a fallback operation e.g. PDSCH / PUSCH scheduling with common search space (CSS) DCI and / or PDSCH scheduling with DCI format 1A or general RNTI use.
- the second processing time may be used when applying a short processing time (eg PDSCH / PUSCH scheduling with USS DCI and / or PDSCH scheduling with TM-dependent DCI or using a third RNTI).
- a short processing time eg PDSCH / PUSCH scheduling with USS DCI and / or PDSCH scheduling with TM-dependent DCI or using a third RNTI.
- a short processing time operation may be configured for each cell.
- different processing times may be set for a plurality of TTIs having different lengths.
- the rule may be defined such that the number of codewords is limited to one.
- a rule may be defined such that the number of codewords is limited to one for a PDSCH scheduled with a UE-specific search space (USS) DCI or TM-dependent DCI.
- USS UE-specific search space
- the rule may be defined such that the number of codewords of the PDSCH scheduled by the USS DCI is limited to one, so that the total HARQ-ACK bits are two bits.
- a rule may be defined to perform bundling when the number of codewords is two for PDSCHs scheduled as USS DCI or TM-dependent DCI.
- the rules may be limited to be applied only to a terminal for which a specific PUCCH format (eg, PUCCH format 3/4/5) is not set.
- the number of codewords of the SCell is preferentially limited to one or HARQ for the codewords of the SCell.
- a rule may be defined to perform spatial bundling of ACK feedback.
- the proposal more generally suggests that if the timing of HARQ-ACK feedback for a DL grant with a plurality of different processing times overlaps in whole (or in part), the number of codewords in the PDSCH scheduled by each DL grant is limited to one.
- Rules can be defined to help.
- a rule may be defined such that the number of codewords is limited to one for the PDSCH scheduled with the USS DCI or TM-dependent DCI.
- a rule may be defined to perform bundling when the number of codewords is two for PDSCHs scheduled with USS DCI or TM-dependent DCI.
- the UE reports whether the number of CCs (or each range composed of groups of CCs) performing a real CA can support a short processing time operation" or “by number of CCs performing a real CA”. Report the maximum number of CCs that can support short processing time operations, "or” Maximum number of CCs that can support short processing time operations when performing CAs, and maximums that can support short processing time operations when not performing CAs. " The UE reports the number of CCs independently differently ", or similarly, in a situation in which the UE reports signaling related to short CA processing capability with its CA, a specific UE performs a short processing time operation.
- the UE may define a rule to follow the legacy processing time in all carriers that are configured / activated. Or, in the above situation, when the terminal is set / activated more than the number of carriers that can support a short processing time, the UE rules to follow a specific processing time predefined or signaled in all the configured / activated carriers Can be defined.
- a rule may be defined such that a processing time of a cell to be scheduled follows a processing time set in a scheduling cell at the time of scheduling.
- a rule may be defined such that the processing time of a cell being scheduled conforms to a specific processing time signaled or implicitly indicated via a higher / physical layer signal.
- the actual DL allocation-to- Processing time such as DL data and / or UL grant-to-UL data, may be determined as follows.
- the following rule may be applied for processing time determination in case of cross carrier scheduling.
- the actual processing time may be determined according to the processing time set in the cell to be scheduled. Characteristically, the rule may be applied to UL grant-to-UL data and / or DL allocation-to-DL data timing determination.
- the actual processing time may be determined by a longer processing time among the processing time set in the scheduled cell and the HARQ transmitting cell. For example, when processing times of n + 3 and n + 4 are set in the scheduled cell and the HARQ transmitting cell, rules may be defined such that DL data-to-DL HARQ transmission timing follows n + 4. That is, in order to operate with a shorter processing time (eg, n + 3), a rule may be defined such that at least both the scheduled cell and the HARQ transmitting cell must be set to a shorter processing time. Similarly, the actual processing time may be determined by the longer of the processing time set in the scheduling cell and the cell being scheduled.
- a rule may be defined such that cross-carrier scheduling is allowed only when the processing time settings of the scheduling cell and the scheduled cell are set to be the same.
- rules may be defined such that scheduled cells and HARQ transmitting cells always apply the same processing time setting. For example, when a short processing time is not set in a HARQ transmitting cell, only a cell in which a short processing time is not set may be allowed as a scheduled cell.
- the DL short TTI length may be set differently or identically for each cell.
- the DL short TTI length may be set differently for each cell group or PUCCH cell group.
- the DL short TTI length may be set differently for each TA group.
- the UL short TTI length may be set differently or identically for each cell.
- the UL short TTI length may be set differently for each cell group or PUCCH cell group.
- the UL short TTI length may be set differently for each TA group.
- the UE for which the sTTI operation is configured may be limited to set only a single TA group for each cell group or PUCCH group.
- the DL / UL TTI length setting may be performed through an upper layer signal or a physical layer signal.
- a new or new numerology of a DL or UL is a cell group or a PUCCH group. Or it may be set differently for each TA group.
- the DL / UL numerology setting may be performed through an upper layer signal or a physical layer signal.
- the processing time may be separately set for each cell group, PUCCH group, or TA group, and the processing time may be separately (differently) for each cell group, PUCCH group, or TA group even for the same (DL and / or UL) sTTI length. Can be set.
- the processing time may include DL data-to-DL HARQ-ACK timing and / or UL grant-to-UL data timing, where both timings are (independently) at the same (DL and / or UL) sTTI length. Also may be set differently for each cell group, PUCCH group or TA group.
- the UE may be configured with a short processing time operation and / or a short TTI operation.
- the UE may be configured as follows.
- the UE may independently derive and report the performance for the short processing time and the short TTI operation (more generally different / additional numerology operation). That is, the performance of the short processing time operation that the terminal can support in the situation that does not support short TTI operation (or different / additional numerology operation), and / or the short that the terminal can support in the situation that does not support the short processing time operation
- the performance of the TTI operation operation (or different / additional numerology operation) may be separately reported to the network.
- the performance signaling may be reported for each band combination.
- the terminal may not expect short processing time and short TTI operation (or different / additional numerology operation) to be set at the same time.
- the terminal may report joint performance for short processing time and short TTI operation (or different / additional numerology operation). Or, the terminal may report the joint performance of the short TTI operation for different short TTI lengths (or different numerologies).
- the performance signaling may be reported for each band combination. For example, the terminal may simultaneously support 7-symbol TTI operation and short processing time operation, whether 2-symbol TTI operation and short processing time operation are supported simultaneously, and 2-symbol TTI operation and 7-symbol TTI operation simultaneously. And the like can be reported as separate performance signaling.
- a rule may be defined to be CA only for a band combination in which the short TTI operation (or different / additional numerology operation) is supported.
- a rule may be defined such that only a band combination in which the short processing time operation is supported is CA.
- examples of the proposed schemes described may also be regarded as a kind of proposed schemes as they may be included as one of the implementation methods of the present invention.
- the proposed schemes may be independently implemented, some proposed schemes may be implemented in combination (or merge).
- Information on whether the proposed methods are applied may be defined so that the base station notifies the terminal through a predefined signal (eg, a physical layer signal or a higher layer signal).
- the 5 is a method for supporting carrier aggregation and short processing time in a wireless communication system.
- the method may be performed by a terminal.
- the terminal may report whether the terminal can support a short processing time to the base station (S510).
- the terminal may determine a processing time to be used by the terminal (S520).
- the terminal may perform an uplink transmission operation according to the determined processing time (S530).
- the reporting of whether the short processing time can be supported may include whether the short processing time can be supported for each number of carriers or groups of carrier numbers used for the carrier aggregation. In addition, a report of whether the short processing time can be supported may be provided per band or per band-combination. In addition, the report whether the short processing time can be supported may include information on the processing time that can be supported for each band or for each band-combination. In addition, the report whether the short processing time can be supported may include information about the maximum number of carriers supported by the short processing time for each band or band-combination.
- the processing time to be used by the terminal may be determined as a predetermined processing time.
- the terminal may perform the uplink according to a longer processing time among the processing times of the two serving cells.
- the transmission operation can be performed.
- processing times of the two serving cells may be the same.
- the uplink transmission operation may include a hybrid automatic repeat request (HARQ) feedback transmission operation according to downlink data reception or an uplink data transmission operation according to reception of an uplink grant.
- the terminal may be configured to support more than one processing time.
- HARQ feedback for downlink data reception according to different processing time overlaps each downlink data may be limited to one codeword.
- HARQ feedback for the two codewords May be bundled.
- the carrier merged cells support a downlink short transmission time interval (TTI)
- the downlink short TTI of each cell is a cell, a group of cells, or a physical uplink control channel (PUCCH) cell. It can be set for each group.
- the carrier merged cells support an uplink short transmission time interval (TTI)
- the uplink short TTI of each cell may be a cell, a cell group, or a physical uplink control channel (PUCCH).
- PUCCH physical uplink control channel
- FIG. 6 is a block diagram illustrating the components of a transmitter 10 and a receiver 20 for carrying out embodiments of the present invention.
- the transmitter 10 and the receiver 20 are associated with transmitters / receivers 13 and 23 capable of transmitting or receiving radio signals carrying information and / or data, signals, messages, etc.
- Memory 12, 22 for storing a variety of information, the transmitter / receiver 13, 23 and the memory 12, 22 and the like is operatively connected to control the components to control the components described above
- the memories 12 and 22 may store a program for processing and controlling the processors 11 and 21, and may temporarily store input / output information.
- the memories 12 and 22 may be utilized as buffers.
- the processors 11 and 21 typically control the overall operation of the various modules in the transmitter or receiver. In particular, the processors 11 and 21 may perform various control functions for carrying out the present invention.
- the processors 11 and 21 may also be called controllers, microcontrollers, microprocessors, microcomputers, or the like.
- the processors 11 and 21 may be implemented by hardware or firmware, software, or a combination thereof.
- firmware or software When implementing the present invention using hardware, application specific integrated circuits (ASICs) or digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), FPGAs ( field programmable gate arrays) may be provided in the processors 11 and 21.
- ASICs application specific integrated circuits
- DSPs digital signal processors
- DSPDs digital signal processing devices
- PLDs programmable logic devices
- FPGAs field programmable gate arrays
- firmware or software may be configured to include a module, a procedure, or a function for performing the functions or operations of the present invention, and configured to perform the present invention.
- the firmware or software may be provided in the processors 11 and 21 or stored in the memory 12 and 22 to be driven by the processors 11 and 21.
- the processor 11 of the transmission apparatus 10 is predetermined from the processor 11 or a scheduler connected to the processor 11 and has a predetermined encoding and modulation on a signal and / or data to be transmitted to the outside. After performing the transmission to the transmitter / receiver (13). For example, the processor 11 converts the data sequence to be transmitted into K layers through demultiplexing, channel encoding, scrambling, and modulation.
- the coded data string is also called a codeword and is equivalent to a transport block, which is a data block provided by the MAC layer.
- One transport block (TB) is encoded into one codeword, and each codeword is transmitted to a receiving device in the form of one or more layers.
- the transmitter / receiver 13 may include an oscillator for frequency upconversion.
- the transmitter / receiver 13 may include Nt transmit antennas, where Nt is a positive integer greater than or equal to one.
- the signal processing of the receiver 20 is the reverse of the signal processing of the transmitter 10.
- the transmitter / receiver 23 of the receiver 20 receives a radio signal transmitted by the transmitter 10.
- the transmitter / receiver 23 may include Nr receive antennas, and the transmitter / receiver 23 frequency down-converts each of the signals received through the receive antennas to restore baseband signals. do.
- Transmitter / receiver 23 may include an oscillator for frequency downconversion.
- the processor 21 may decode and demodulate a radio signal received through a reception antenna to restore data originally transmitted by the transmission apparatus 10.
- the transmitter / receiver 13, 23 is equipped with one or more antennas.
- the antenna transmits a signal processed by the transmitter / receiver 13, 23 to the outside or receives a radio signal from the outside under the control of the processors 11 and 21, thereby transmitting / receiving the transmitter / receiver. It performs the function of forwarding to (13, 23).
- Antennas are also called antenna ports.
- Each antenna may correspond to one physical antenna or may be configured by a combination of more than one physical antenna elements.
- the signal transmitted from each antenna can no longer be decomposed by the receiver 20.
- a reference signal (RS) transmitted in correspondence with the corresponding antenna defines the antenna as viewed from the perspective of the receiver 20, and whether the channel is a single radio channel from one physical antenna or includes the antenna.
- RS reference signal
- the receiver 20 enables channel estimation for the antenna. That is, the antenna is defined such that a channel carrying a symbol on the antenna can be derived from the channel through which another symbol on the same antenna is delivered.
- MIMO multi-input multi-output
- the terminal or the UE operates as the transmitter 10 in the uplink and the receiver 20 in the downlink.
- the base station or eNB operates as the receiving device 20 in the uplink, and operates as the transmitting device 10 in the downlink.
- the transmitter and / or the receiver may perform at least one or a combination of two or more of the embodiments of the present invention described above.
- the present invention can be used in a wireless communication device such as a terminal, a relay, a base station, and the like.
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Abstract
Description
DL-UL configuration | Downlink-to-Uplink Switch-point periodicity | Subframe number | |||||||||
0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | ||
0 | 5ms | D | S | U | U | U | D | S | U | U | U |
1 | 5ms | D | S | U | U | D | D | S | U | U | D |
2 | 5ms | D | S | U | D | D | D | S | U | D | D |
3 | 10ms | D | S | U | U | U | D | D | D | D | D |
4 | 10ms | D | S | U | U | D | D | D | D | D | D |
5 | 10ms | D | S | U | D | D | D | D | D | D | D |
6 | 5ms | D | S | U | U | U | D | S | U | U | D |
Special subframe configuration | Normal cyclic prefix in downlink | Extended cyclic prefix in downlink | ||||
DwPTS | UpPTS | DwPTS | UpPTS | |||
Normal cyclic prefix in uplink | Extended cyclic prefix in uplink | Normal cyclic prefix in uplink | Extended cyclic prefix in uplink | |||
0 | 6592·Ts | 2192·Ts | 2560·Ts | 7680·Ts | 2192·Ts | 2560·Ts |
1 | 19760·Ts | 20480·Ts | ||||
2 | 21952·Ts | 23040·Ts | ||||
3 | 24144·Ts | 25600·Ts | ||||
4 | 26336·Ts | 7680·Ts | 4384·Ts | *5120·Ts | ||
5 | 6592·Ts | 4384·Ts | *5120·Ts | 20480·Ts | ||
6 | 19760·Ts | 23040·Ts | ||||
7 | 21952·Ts | 12800·Ts | ||||
8 | 24144·Ts | - | - | - | ||
9 | 13168·Ts | - | - | - |
Search Space SK (L) | Number of PDCCH candidates M(L) | ||
Type | Aggregation Level L | Size[in CCEs] | |
UE-specific | 1 | 6 | 6 |
2 | 12 | 6 | |
4 | 8 | 2 | |
8 | 16 | 2 | |
Common | 4 | 16 | 4 |
8 | 16 | 2 |
PUCCH format | Modulation scheme | Number of bits per subframe | Usage | Etc. |
1 | N/A | N/A (exist or absent) | SR (Scheduling Request) | |
1a | BPSK | 1 | ACK/NACK orSR + ACK/NACK | One codeword |
1b | QPSK | 2 | ACK/NACK orSR + ACK/NACK | Two codeword |
2 | QPSK | 20 | CQI/PMI/RI | Joint coding ACK/NACK (extended CP) |
2a | QPSK+BPSK | 21 | CQI/PMI/RI + ACK/NACK | Normal CP only |
2b | QPSK+QPSK | 22 | CQI/PMI/RI + ACK/NACK | Normal CP only |
3 | QPSK | 48 | ACK/NACK orSR + ACK/NACK orCQI/PMI/RI + ACK/NACK |
Claims (15)
- 무선 통신 시스템에서 반송파 병합과 짧은 프로세싱 시간을 지원하는 방법에 있어서, 상기 방법은 단말에 의해 수행되고,반송파 병합이 설정되는 경우, 상기 단말이 짧은 프로세싱 시간을 지원할 수 있는지 여부를 기지국에게 보고하는 단계;상기 단말에게 교차 반송파 병합이 설정되는 경우, 상기 단말에 의해 사용될 프로세싱 시간을 결정하는 단계; 및상기 결정된 프로세싱 시간에 따라 상향링크 전송 동작을 수행하는 단계를 포함하는 것을 특징으로 하는, 방법.
- 제1항에 있어서, 상기 짧은 프로세싱 시간을 지원할 수 있는지 여부의 보고는 상기 반송파 병합에 사용되는 반송파 개수 또는 반송파 개수 그룹 별로 짧은 프로세싱 시간을 지원할 수 있는지를 포함하는 것을 특징으로 하는, 방법.
- 제1항에 있어서, 상기 짧은 프로세싱 시간을 지원할 수 있는지 여부의 보고는 대역 별 또는 대역-조합 별로 제공되는 것을 특징으로 하는, 방법.
- 제3항에 있어서, 상기 짧은 프로세싱 시간을 지원할 수 있는지 여부의 보고는 상기 대역 별 또는 상기 대역-조합 별로 지원가능한 프로세싱 시간에 대한 정보를 포함하는 것을 특징으로 하는, 방법.
- 제1항에 있어서, 상기 짧은 프로세싱 시간을 지원할 수 있는지 여부의 보고는 상기 대역 별 또는 상기 대역-조합 별로 짧은 프로세싱 시간이 지원되는 최대 반송파의 개수에 대한 정보를 포함하는 것을 특징으로 하는, 방법.
- 제5항에 있어서, 상기 최대 반송파의 개수보다 많은 수의 반송파가 상기 단말에게 설정 또는 활성화되면, 상기 단말에 의해 사용될 프로세싱 시간은 미리 결정된 프로세싱 시간으로 결정되는 것을 특징으로 하는, 방법.
- 제1항에 있어서, 상기 단말에게 교차 반송파 병합을 위한 두 개의 서빙 셀이 설정되는 경우, 상기 두 개의 서빙 셀의 프로세싱 시간이 상이하면, 상기 두 개의 서빙 셀의 프로세싱 시간 중 더 긴 프로세싱 시간에 따라 상기 상향링크 전송 동작을 수행하는 단계를 포함하는 것을 특징으로 하는, 방법.
- 제1항에 있어서, 상기 단말에게 교차 반송파 병합을 위한 두 개의 서빙 셀이 설정되는 경우, 상기 두 개의 서빙 셀의 프로세싱 시간은 동일한 것을 특징으로 하는, 방법.
- 제1항에 있어서, 상기 상향링크 전송 동작은 하향링크 데이터 수신에 따른 HARQ(Hybrid Automatic Repeat Request) 피드백 전송 동작 또는 상향링크 승인 수신에 따른 상향링크 데이터 전송동작을 포함하는 것을 특징으로 하는, 방법.
- 제1항에 있어서,상기 단말은 둘 이상의 프로세싱 시간을 지원하도록 설정된 것을 특징으로 하는, 방법.
- 제10항에 있어서,서로 다른 프로세싱 시간에 따른 하향링크 데이터 수신에 대한 HARQ 피드백의 타이밍이 중첩되는 경우, 각 하향링크 데이터는 1개의 코드워드로 제한되는 것을 특징으로 하는, 방법.
- 제10항에 있어서,서로 다른 프로세싱 시간에 따른 하향링크 데이터 수신에 대한 HARQ 피드백의 타이밍이 중첩되는 경우, 특정 하향링크 제어 정보에 의해 스케줄링된 하향링크 데이터가 2개의 코드워드이면 상기 2개의 코드워드에 대한 HARQ 피드백은 번들링되는 것을 특징으로 하는, 방법.
- 제1항에 있어서, 상기 반송파 병합된 셀들이 하향링크 짧은 전송 시간 간격(transmission time interval; TTI)을 지원하면, 각 셀들의 하향링크 짧은 TTI는 셀, 셀 그룹 또는 물리 상향링크 제어 채널(physical uplink control channel; PUCCH) 셀 그룹 별로 설정되는 것을 특징으로 하는, 방법.
- 제1항에 있어서, 상기 반송파 병합된 셀들이 상향링크 짧은 전송 시간 간격(transmission time interval; TTI)을 지원하면, 각 셀들의 상향링크 짧은 TTI는 셀, 셀 그룹 또는 물리 상향링크 제어 채널(physical uplink control channel; PUCCH) 셀 그룹 별로 설정되는 것을 특징으로 하는, 방법.
- 무선 통신 시스템에서 반송파 병합과 짧은 프로세싱 시간을 지원하는 단말에 있어서, 상기 단말은:수신기 및 송신기; 및상기 수신기 및 송신기를 제어하는 프로세서를 포함하고,상기 프로세서는 상기 송신기를 통해 반송파 병합이 설정되는 경우, 상기 단말이 짧은 프로세싱 시간을 지원할 수 있는지 여부를 기지국에게 보고하고, 상기 단말에게 교차 반송파 병합이 설정되는 경우, 상기 단말에 의해 사용될 프로세싱 시간을 결정하고, 그리고 상기 결정된 프로세싱 시간에 따라 상향링크 전송 동작을 수행하는 것을 특징으로 하는, 단말.
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110753341A (zh) * | 2018-07-23 | 2020-02-04 | 华为技术有限公司 | 一种资源配置方法及装置 |
CN112673672A (zh) * | 2018-07-06 | 2021-04-16 | 株式会社Ntt都科摩 | 用户终端以及无线通信方法 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20180017940A (ko) * | 2016-08-11 | 2018-02-21 | 삼성전자주식회사 | 무선 셀룰라 통신 시스템에서 지연감소를 위한 전송 방법 및 장치 |
CN109997327B (zh) * | 2016-11-12 | 2021-10-26 | Lg电子株式会社 | 在无线通信***中发送上行链路信号的方法及其装置 |
JP2020120142A (ja) * | 2017-05-26 | 2020-08-06 | シャープ株式会社 | 端末装置、基地局装置、通信方法、および、集積回路 |
US10820341B2 (en) * | 2018-02-12 | 2020-10-27 | Mediatek Inc. | Determination of requirement of UE processing time in NR |
US11026226B2 (en) | 2018-07-06 | 2021-06-01 | Qualcomm Incorporated | Feedback design for multi-transmission reception point transmission |
KR20210049612A (ko) * | 2019-10-25 | 2021-05-06 | 삼성전자주식회사 | 무선 통신 시스템에서 데이터를 송수신하는 방법 및 장치 |
CN115603883A (zh) * | 2020-02-14 | 2023-01-13 | 上海朗帛通信技术有限公司(Cn) | 一种被用于无线通信的节点中的方法和装置 |
WO2022084532A1 (en) * | 2020-10-23 | 2022-04-28 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for determining processing times for enhanced cross-carrier scheduling |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150103782A1 (en) * | 2013-10-14 | 2015-04-16 | Qualcomm Incorporated | Techniques for enabling asynchronous communications using unlicensed radio frequency spectrum |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2528378B1 (en) * | 2009-04-15 | 2016-06-08 | HTC Corporation | Method and system for handling measurement capability |
KR20130126427A (ko) * | 2012-05-11 | 2013-11-20 | 주식회사 팬택 | 다중 요소 반송파 시스템에서 단말의 성능정보의 전송장치 및 방법 |
EP2816858B8 (en) * | 2013-06-17 | 2018-05-02 | Alcatel Lucent | Base station and method of operating a base station |
WO2015142278A1 (en) * | 2014-03-20 | 2015-09-24 | Telefonaktiebolaget L M Ericsson (Publ) | Node and method for capability reporting |
EP3261379B1 (en) * | 2015-02-20 | 2021-08-11 | NTT DoCoMo, Inc. | User equipment, and delivery-confirmation-information transmission method |
EP3944551A1 (en) * | 2015-04-02 | 2022-01-26 | Samsung Electronics Co., Ltd. | Transmission and reception method and apparatus for reducing transmission time interval in wireless cellular communication system |
US20170111923A1 (en) * | 2015-10-14 | 2017-04-20 | Sharp Laboratories Of America, Inc. | User equipments, base stations and methods for low latency radio communications |
WO2017130993A1 (ja) * | 2016-01-27 | 2017-08-03 | 株式会社Nttドコモ | ユーザ端末、無線基地局及び無線通信方法 |
US10069613B2 (en) * | 2016-04-01 | 2018-09-04 | Motorola Mobility Llc | Method and apparatus for scheduling uplink transmissions with reduced latency |
US10440706B2 (en) * | 2016-08-08 | 2019-10-08 | Sharp Kabushiki Kaisha | Systems and methods for PUCCH resource allocation and HARQ-ACK reporting with processing time reduction |
US11477790B2 (en) * | 2016-08-10 | 2022-10-18 | Interdigital Patent Holdings | Timing advance and processing capabilities in a reduced latency system |
-
2017
- 2017-09-21 EP EP17856652.7A patent/EP3522642B1/en active Active
- 2017-09-21 JP JP2019517359A patent/JP6820412B2/ja active Active
- 2017-09-21 CN CN201780060275.6A patent/CN109792734B/zh active Active
- 2017-09-21 KR KR1020197009007A patent/KR102208128B1/ko active IP Right Grant
- 2017-09-21 WO PCT/KR2017/010392 patent/WO2018062766A1/ko unknown
-
2019
- 2019-03-29 US US16/369,236 patent/US10904745B2/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150103782A1 (en) * | 2013-10-14 | 2015-04-16 | Qualcomm Incorporated | Techniques for enabling asynchronous communications using unlicensed radio frequency spectrum |
Non-Patent Citations (4)
Title |
---|
"Shortened Processing Time for Downlink 1ms TTI", R1-166307, 3GPP TSG RAN WG1 #86, 13 August 2016 (2016-08-13), Gothenburg, Sweden, XP051142327 * |
HUAWEI ET AL.: "Discussion on CA Issues for Shortened TTI Operation", RL-167189, 3GPP TSG RAN WG1 MEETING #86, 12 August 2016 (2016-08-12), Gothenburg, Sweden, XP051132576 * |
LG ELECTRONICS: "Consideration on Support of CA Operation for NR", RL-166923, 3GPP TSG RAN WG1 MEETING #86, 13 August 2016 (2016-08-13), Gothenburg, Sweden, XP051132967 * |
OPPO: "Discussion of the UE Processing Time on the Support of Multiple Numerologies and Frame Structures", R1 -166615, 3GPP TSG RAN WG1 MEETING #86, 12 August 2016 (2016-08-12), Gothenburg, Sweden, XP051132215 * |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112673672A (zh) * | 2018-07-06 | 2021-04-16 | 株式会社Ntt都科摩 | 用户终端以及无线通信方法 |
EP3820195A4 (en) * | 2018-07-06 | 2022-03-09 | Ntt Docomo, Inc. | USER EQUIPMENT AND WIRELESS COMMUNICATION METHOD |
CN110753341A (zh) * | 2018-07-23 | 2020-02-04 | 华为技术有限公司 | 一种资源配置方法及装置 |
EP3809732A4 (en) * | 2018-07-23 | 2021-08-04 | Huawei Technologies Co., Ltd. | RESOURCE ALLOCATION PROCEDURE AND DEVICE |
JP2021531698A (ja) * | 2018-07-23 | 2021-11-18 | 華為技術有限公司Huawei Technologies Co., Ltd. | リソース構成方法および装置 |
JP7217338B2 (ja) | 2018-07-23 | 2023-02-02 | 華為技術有限公司 | リソース構成方法および装置 |
US11611871B2 (en) | 2018-07-23 | 2023-03-21 | Huawei Technologies Co., Ltd. | Resource configuration method and apparatus |
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