WO2019017614A1 - Procédé et appareil pour effectuer une transmission de canal de liaison montante dans un système de communication cellulaire sans fil - Google Patents

Procédé et appareil pour effectuer une transmission de canal de liaison montante dans un système de communication cellulaire sans fil Download PDF

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Publication number
WO2019017614A1
WO2019017614A1 PCT/KR2018/007473 KR2018007473W WO2019017614A1 WO 2019017614 A1 WO2019017614 A1 WO 2019017614A1 KR 2018007473 W KR2018007473 W KR 2018007473W WO 2019017614 A1 WO2019017614 A1 WO 2019017614A1
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Prior art keywords
signal
transmission
uplink
lte
base station
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PCT/KR2018/007473
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English (en)
Korean (ko)
Inventor
최승훈
김영범
김윤선
김태형
박성진
배태한
오진영
Original Assignee
삼성전자 주식회사
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Priority claimed from KR1020170097218A external-priority patent/KR102496875B1/ko
Application filed by 삼성전자 주식회사 filed Critical 삼성전자 주식회사
Priority to US16/631,731 priority Critical patent/US11903018B2/en
Publication of WO2019017614A1 publication Critical patent/WO2019017614A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes

Definitions

  • the present invention relates to a method and apparatus for performing uplink transmission in a wireless communication system.
  • a 5G communication system or a pre-5G communication system is referred to as a 4G network (Beyond 4G Network) communication system or a post-LTE system (Post LTE) system.
  • 4G network Beyond 4G Network
  • Post LTE post-LTE system
  • 5G communication systems are being considered for implementation in very high frequency (mmWave) bands (e.g., 60 gigahertz (60GHz) bands).
  • mmWave very high frequency
  • the 5G communication system In order to mitigate the path loss of the radio wave in the very high frequency band and to increase the propagation distance of the radio wave, in the 5G communication system, beamforming, massive MIMO, full-dimension MIMO (FD-MIMO ), Array antennas, analog beam-forming, and large scale antenna technologies are being discussed.
  • the 5G communication system has developed an advanced small cell, an advanced small cell, a cloud radio access network (cloud RAN), an ultra-dense network, (D2D), a wireless backhaul, a moving network, cooperative communication, Coordinated Multi-Points (CoMP), and interference cancellation Have been developed.
  • cloud RAN cloud radio access network
  • D2D ultra-dense network
  • CoMP Coordinated Multi-Points
  • ACM Advanced Coding Modulation
  • FQAM Hybrid FSK and QAM Modulation
  • SWSC Sliding Window Superposition Coding
  • FBMC Filter Bank Multi Carrier
  • SCMA subcarrier code multiple access
  • IoT Internet of Things
  • IoE Internet of Everything
  • M2M Machine to Machine
  • MTC Machine Type Communication
  • an intelligent IT (Internet Technology) service can be provided that collects and analyzes data generated from connected objects to create new value in human life.
  • IoT is a field of smart home, smart building, smart city, smart car or connected car, smart grid, health care, smart home appliance, and advanced medical service through fusion of existing information technology .
  • the 5G (next generation communication system) after LTE (Long Term Evolution or Evolved Universal Terrestrial Radio Access (E-UTRA)) and LTE-A (LTE-Advanced or E-UTRA Evolution) (5th Generation) system is being actively discussed.
  • the 5G system is aiming at high-speed data service of several Gbps using ultra-wideband.
  • 5G system considers ultra-high frequency band of several GHz or tens of GHz as candidate frequency.
  • the pathloss of the radio wave is increased in proportion to the frequency band, so that the coverage of the mobile communication system is reduced. Accordingly, the radiant energy of the radio wave is used as a predetermined destination point
  • a beamforming technique of concentrating and increasing the reaching distance of the radio wave is becoming important.
  • TA Timing Advance
  • a method of a terminal for solving the above problems includes determining a first transmission interval of a first signal scheduled for a first frequency and a second transmission interval of a second signal scheduled for a second frequency, Determining whether a first transmission period overlaps with a second transmission period, determining a priority order of the first signal and the second signal when at least a part of the first transmission period overlaps with the second transmission period, And performing communication with the base station according to a priority determined during a time when the first transmission interval overlaps with the second transmission interval.
  • a signal having a higher priority among the first signal and the second signal may be transmitted or received during a period in which the first transmission section overlaps with the second transmission section and a signal having a lower priority may be partially or entirely dropped.
  • the priority order includes a communication system of the first signal and the second signal, a time-axis order of the first transmission period and the second transmission period, a cell of the first frequency and the second frequency, The kind of information included in the first signal and the second signal, the payload size of the first signal and the second signal, and the transmission power of the first signal and the second signal.
  • the determining whether the first transmission period overlaps with the second transmission period may further include comparing a timing advance for the first signal and TA for the second signal.
  • a mobile station including a transmitter and a receiver for transmitting and receiving a signal, and a transmitter for receiving a first transmission interval of a first signal scheduled for the first frequency, And determines whether the first transmission period overlaps with the second transmission period. If at least a part of the first transmission period overlaps with the second transmission period, the priority of the first signal and the second signal is determined And a control unit configured to perform communication with the base station according to a priority determined during a time period during which the first transmission period overlaps with the second transmission period.
  • a method of transmitting a signal for scheduling transmission of a first signal at a first frequency to a mobile station Wherein the first signal and the second signal have a priority determined for the first signal and the second signal during a time when at least a portion of the first transmission interval of the first signal and the second transmission interval of the second signal overlap, And performing communication with the terminal in accordance with the request.
  • a base station including a transmitter and a receiver for transmitting and receiving signals, and a transmitter for transmitting a signal for scheduling transmission of a first signal at a first frequency to a terminal, And for transmitting a signal for scheduling the transmission of the second signal and for determining a priority determined for the first signal and the second signal for a period of time during which at least a portion of the first transmission interval of the first signal and the second transmission interval of the second signal overlap
  • a control unit configured to perform communication with the terminal.
  • a method and apparatus for performing uplink transmission in consideration of a TA value according to uplink transmission thereby providing a harmonic and inter-modulation product that can be generated according to a setup related to uplink transmission
  • 1 is a diagram showing a basic structure of a time-dominant region of an LTE system.
  • FIG. 2 is a diagram illustrating an example in which 5G services are multiplexed and transmitted in one system.
  • FIG. 3 is a diagram showing a first communication system to which the present invention is applied.
  • FIG. 4 is a diagram showing a second communication system to which the present invention is applied.
  • FIG. 5 is a diagram showing a third communication system to which the present invention is applied.
  • Embodiment 1 is a diagram showing Embodiment 1 proposed by the present invention.
  • Embodiment 2 proposed by the present invention.
  • FIG. 8 is a diagram illustrating a base station apparatus according to the present invention.
  • FIG. 9 is a diagram showing a terminal device according to the present invention.
  • Computer program instructions may also be stored on a computer or other programmable data processing equipment so that a series of operating steps may be performed on a computer or other programmable data processing equipment to create a computer- It is also possible for the instructions to perform the processing equipment to provide steps for executing the functions described in the flowchart block (s).
  • each block may represent a module, segment, or portion of code that includes one or more executable instructions for executing the specified logical function (s).
  • the functions mentioned in the blocks may occur out of order. For example, two blocks shown in succession may actually be executed substantially concurrently, or the blocks may sometimes be performed in reverse order according to the corresponding function.
  • " part " used in the present embodiment means a hardware component such as software or an FPGA or an ASIC, and 'part' performs certain roles.
  • 'part' is not meant to be limited to software or hardware.
  • &Quot; to " may be configured to reside on an addressable storage medium and may be configured to play one or more processors.
  • 'parts' may refer to components such as software components, object-oriented software components, class components and task components, and processes, functions, , Subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays, and variables.
  • the functions provided within the components and components may be further combined with a smaller number of components and components, or further components and components.
  • the components and components may be implemented to play back one or more CPUs in a device or a secure multimedia card.
  • the present invention can be applied to other communication systems having a technical background and a channel form without departing from the scope of the present invention and may be made by a person skilled in the technical field of the present invention.
  • the present invention can be applied to a multicarrier HSPA (High Speed Packet Access) supporting carrier coupling.
  • HSPA High Speed Packet Access
  • the present invention relates to a wireless communication system, and more particularly, to a wireless communication system in which different wireless communication systems coexist in one carrier frequency or a plurality of carrier frequencies and can transmit / receive data in at least one communication system among different communication systems. And a method and an apparatus for transmitting / receiving data to / from each communication system.
  • a mobile communication system has been developed to provide voice service while ensuring the user's activity.
  • the mobile communication system is gradually expanding not only to voice but also to data service, and now it has developed to the extent of providing high-speed data service.
  • a lack of resources and users demand higher speed services, and therefore, a more advanced mobile communication system is required.
  • LTE Long Term Evolution
  • 3GPP 3rd Generation Partnership Project
  • the LTE system adopts a Hybrid Automatic Repeat reQuest (HARQ) scheme in which a physical layer resends data when a decoding failure occurs in an initial transmission.
  • HARQ Hybrid Automatic Repeat reQuest
  • a receiver transmits information (NACK: Negative Acknowledgment) indicating decoding failure to the transmitter so that the transmitter can retransmit the corresponding data in the physical layer.
  • NACK Negative Acknowledgment
  • the receiver combines the data retransmitted by the transmitter with data that has not been decoded previously, thereby improving data reception performance.
  • an acknowledgment (ACK) indicating the decoding success is transmitted to the transmitter so that the transmitter can transmit new data.
  • FIG. 1 is a diagram illustrating a basic structure of a time-frequency domain, which is a radio resource region in which data or a control channel is transmitted in a downlink in an LTE system.
  • the horizontal axis represents the time domain and the vertical axis represents the frequency domain.
  • the minimum transmission unit in the time domain is an OFDM symbol, and N symb (102) OFDM symbols constitute one slot 106, and two slots form one subframe 105.
  • the length of the slot is 0.5 ms and the length of the subframe is 1.0 ms.
  • the radio frame 114 is a time domain unit consisting of 10 subframes.
  • the minimum transmission unit in the frequency domain is a subcarrier, and the bandwidth of the total system transmission bandwidth is composed of a total of N BW (104) subcarriers.
  • a basic unit of a resource can be represented by an OFDM symbol index and a subcarrier index as a resource element (RE) 112.
  • a resource block (RB or Physical Resource Block) 108 is defined as N symb (102) consecutive OFDM symbols in the time domain and N RB (110) consecutive subcarriers in the frequency domain.
  • one RB 108 is comprised of N symb x N RB REs 112.
  • the minimum transmission unit of data is the RB unit.
  • the LTE system defines and operates six transmission bandwidths.
  • the downlink transmission bandwidth and the uplink transmission bandwidth may be different from each other.
  • the channel bandwidth represents the RF bandwidth corresponding to the system transmission bandwidth.
  • Table 1 shows correspondence between system transmission bandwidth and channel bandwidth defined in the LTE system. For example, an LTE system with a 10 MHz channel bandwidth has a transmission bandwidth of 50 RBs.
  • the control information includes a control channel transmission interval indicator indicating how many OFDM symbols control information is transmitted, scheduling information for downlink data or uplink data, and an HARQ ACK / NACK signal.
  • scheduling information for downlink data or uplink data is transmitted from a base station to a mobile station through downlink control information (DCI).
  • DCI downlink control information
  • An uplink (UL) refers to a radio link through which a terminal transmits data or control signals to a base station
  • a downlink (DL) refers to a radio link through which a base station transmits data or control signals to a terminal.
  • the DCI defines various formats to determine whether it is scheduling information (uplink grant) for uplink data or scheduling information (DL (downlink) grant) for downlink data, a compact DCI Whether to apply spatial multiplexing using multiple antennas, whether DCI is used for power control, and the like.
  • DCI format 1 which is scheduling control information (DL grant) for downlink data, is configured to include at least the following control information.
  • Type 0 allocates resources by resource block group (RBG) by applying bitmap method.
  • the basic unit of scheduling is an RB (resource block) represented by a time and frequency domain resource
  • the RBG is composed of a plurality of RBs and serves as a basic unit of scheduling in the type 0 scheme.
  • Type 1 allows a specific RB to be allocated within the RBG.
  • - Resource block assignment Notifies the RB allocated to data transmission.
  • the resources to be represented are determined according to the system bandwidth and the resource allocation method.
  • MCS Modulation and coding scheme
  • - New data indicator Notifies HARQ initial transmission or retransmission.
  • Redundancy version Notifies redundancy version of HARQ.
  • the DCI is transmitted through a Physical Downlink Control Channel (PDCCH) or an Enhanced PDCCH (EPDCCH) through a channel coding and modulation process.
  • PDCH Physical Downlink Control Channel
  • EPDCCH Enhanced PDCCH
  • the DCI is independently channel-coded for each UE, and then is composed of independent PDCCHs and transmitted.
  • the PDCCH is mapped and transmitted during the control channel transmission period.
  • the frequency domain mapping position of the PDCCH is determined by the identifier (ID) of each terminal and spread over the entire system transmission band.
  • the downlink data is transmitted through a Physical Downlink Shared Channel (PDSCH), which is a physical channel for downlink data transmission.
  • PDSCH Physical Downlink Shared Channel
  • the PDSCH is transmitted after the control channel transmission interval.
  • the scheduling information such as the specific mapping position in the frequency domain, the modulation scheme, and the like is notified by the DCI transmitted through the PDCCH.
  • the base station notifies the UE of a modulation scheme applied to a PDSCH to be transmitted and a transport block size (TBS) to be transmitted through an MCS having 5 bits among the control information constituting the DCI.
  • TBS corresponds to a size before channel coding for error correction is applied to data (transport block, TB) to be transmitted by the base station.
  • the modulation schemes supported by the LTE system are QPSK (Quadrature Phase Shift Keying), 16QAM (Quadrature Amplitude Modulation), and 64QAM, and the respective modulation order (Qm) corresponds to 2, 4, and 6. That is, 2 bits per symbol for QPSK modulation, 4 bits per symbol for 16QAM modulation, and 6 bits per symbol for 64QAM modulation.
  • CA Bandwidth extension or Carrier Aggregation
  • CC constituent carrier
  • the LTE Rel-8 terminal is defined to have one constituent carrier wave for each of the downward and upward directions.
  • the downlink carrier wave and the uplink carrier wave that are connected to the SIB-2 are bundled and called a cell.
  • the SIB-2 connection relationship between the downlink carrier and the uplink carrier is transmitted as a system signal or an upper signal.
  • a terminal supporting a CA can receive downlink data through a plurality of serving cells and transmit uplink data.
  • a Carrier Indicator Field can be set as a field for indicating that a Physical Uplink Shared Channel (PUSCH) is indicated.
  • the CIF may be set to a terminal supporting CA.
  • the CIF is determined to be able to indicate another serving cell by adding 3 bits to the PDCCH information in a specific serving cell.
  • CIF is included only when performing cross carrier scheduling, and when the CIF is not included, cross carrier scheduling .
  • the CIF When the CIF is included in the DL assignment, the CIF indicates a serving cell to which a PDSCH scheduled to be scheduled by the DL assignment is to be transmitted, and the CIF is included in uplink resource allocation information (UL grant) , The CIF is defined to point to the serving cell to which the PUSCH scheduled to be transmitted by the UL grant is to be transmitted.
  • Carrier Aggregation which is a bandwidth extension technique, is defined in the LTE-10, and a plurality of serving cells can be set to the UE.
  • the UE periodically or non-periodically transmits channel information on the plurality of serving cells to the base station for data scheduling of the base station.
  • the base station schedules data for each carrier and transmits the data, and the terminal transmits A / N feedback on the data transmitted for each carrier.
  • the LTE Rel-10 is designed to transmit up to 21 bits of A / N feedback. When the A / N feedback and channel information transmission overlap in one subframe, the A / N feedback is transmitted and the channel information is discarded .
  • LTE Rel-11 is designed to transmit A / N feedback of up to 22 bits and channel information of one cell to PUCCH format 3 in transmission resources of PUCCH format 3 by multiplexing channel information of one cell together with A / N feedback Respectively.
  • LAA Licensed Assisted Access
  • LTE refers to all of the evolutionary technologies of LTE, such as LTE-A and LAA.
  • 5G or NR fifth-generation wireless cellular communication system
  • 5G is an example of an enhanced mobile broadband (eMBB) (hereinafter referred to as eMBB), massive machine type communication (hereinafter referred to as mMTC)
  • eMBB enhanced mobile broadband
  • mMTC massive machine type communication
  • a variety of 5G services such as Ultra Low Reliability and Low Latency Communications (hereinafter referred to as " URLLC ") will be referred to as a terminal maximum transmission rate of 20Gbps, a terminal maximum rate of 500km / , A terminal connection density of 1,000,000 terminals / km 2, and the like, to satisfy the requirements selected for each of the 5G services.
  • &quot Ultra Low Reliability and Low Latency Communications
  • mMTC is being considered to support application services such as the Internet of Thing (IoT) in 5G.
  • IoT Internet of Thing
  • mMTC needs to support the connection of large terminals in a cell, enhancement of terminal coverage, improved battery time, and cost reduction of terminals.
  • the Internet must be capable of supporting a large number of terminals (for example, 1,000,000 terminals / km 2 ) in a cell by providing communication functions by being attached to various sensors and various devices.
  • mMTC is required to have a wider coverage than eMBB because it is likely to be located in a shadow area such as an area where a terminal can not cover a cell or a building.
  • the mMTC is likely to be configured as a low-cost terminal and requires a very long battery life time because it is difficult to frequently replace the battery of the terminal.
  • cellular-based wireless communication used for a specific purpose is a service used for remote control, industrial automation, unmanned aerial vehicle, remote health control, emergency notification of robots or machinery , Ultra-low latency, and ultra-high reliability.
  • URLLC has a requirement to satisfy a maximum delay time of less than 0.5 ms and at the same time to provide a packet error rate of 10 -5 or less. Therefore, a transmission time interval (TTI) that is smaller than a 5G service such as an eMBB is required for URLLC, and a design requirement for allocating a wide resource in the frequency band is required.
  • TTI transmission time interval
  • the services considered in the above-mentioned fifth generation wireless cellular communication system should be provided as one framework. That is, for efficient resource management and control, it is preferable that each service is integrated into one system and controlled and transmitted rather than operated independently.
  • FIG. 2 is a diagram showing an example in which services to be considered in 5G are multiplexed in one system.
  • a frequency-time resource 201 used by 5G may be composed of a frequency axis 202 and a time axis 203.
  • FIG. 2 illustrates that 5G operates eMBB 205, mMTC 206, and URLLC 207 within a single framework.
  • eMBMS enhanced Mobile Broadcast / Multicast Service
  • eMBB 205 time-division multiplexed (TDM) or frequency-division multiplexed May be multiplexed and transmitted through Frequency Division Multiplexing (FDM), and Spatial Division Multiplexing may also be considered.
  • TDM time-division multiplexed
  • FDM Frequency Division Multiplexing
  • Spatial Division Multiplexing may also be considered.
  • eMBB 205 it is preferable to occupy and transmit the maximum frequency bandwidth at a specific arbitrary time in order to provide the above-mentioned increased data transmission rate.
  • the eMbB 205 service be transmitted in TDM within the system transmission bandwidth 201 with other services, but it is also preferable that the EMBB 205 be transmitted in FDM within the system transmission bandwidth with other services according to the needs of other services .
  • the mMTC 206 In the case of the mMTC 206, an increased transmission interval is required in order to secure wide coverage unlike other services, and coverage can be ensured by repetitively transmitting the same packet within the transmission interval. At the same time, in order to reduce the complexity of the terminal and the terminal price, the transmission bandwidth that the terminal can receive is limited. Considering this requirement, the mMTC 206 is preferably transmitted in FDM with other services within the transmission system bandwidth 201 of 5G.
  • the URLLC 207 has a short Transmit Time Interval (TTI) when compared with other services in order to satisfy the second delay requirement required by the service. At the same time, since it is necessary to have a low coding rate in order to satisfy the second reliability requirement, it is preferable to have a wide bandwidth on the frequency side. Given the requirements of such a URLLC 207, it is desirable that the URLLC 207 be TDM with other services within the transmission system bandwidth 201 of 5G.
  • TTI Transmit Time Interval
  • Each of the services described above may have different transmission / reception techniques and transmission / reception parameters to satisfy the requirements of each service.
  • each service may have a different numerology depending on each service requirement. Numerology refers to a method of calculating a Cyclic Prefix (CP) length, a subcarrier interval, and a subcarrier spacing in a communication system based on Orthogonal Frequency Division Multiplexing (OFDM) or Orthogonal Frequency Division Multiple Access (OFDMA) spacing, OFDM symbol length, transmission interval length (TTI), and the like.
  • OFDM Orthogonal Frequency Division Multiplexing
  • OFDMA Orthogonal Frequency Division Multiple Access
  • TTI transmission interval length
  • the eMBMS 208 may have a longer CP length than other services.
  • the eMBMS Since the eMBMS transmits broadcast-based upper traffic, the same data can be transmitted in all cells. At this time, if a signal received from a plurality of cells arrives within a CP length, the UE can receive and decode all of these signals, thereby obtaining a single frequency network (SFN) gain, Therefore, a terminal located at a cell boundary is also advantageous in that broadcasting information can be received without restriction of coverage.
  • SFN single frequency network
  • a terminal located at a cell boundary is also advantageous in that broadcasting information can be received without restriction of coverage.
  • the CP length is relatively long for supporting eMBMS in 5G, the CP overhead will cause waste, and at the same time, a longer OFDM symbol length is required compared to other services. A narrow subcarrier interval is required.
  • a shorter OFDM symbol length may be required as a smaller TTI is required compared to other services, and at the same time a wider subcarrier interval may be required.
  • the 5G frequency band (hereinafter referred to as sub-6 GHz in this specification) or the frequency band of 6 GHz or more ), It is possible to satisfy the data transmission rate required by 5G by using a frequency of 20 MHz or more.
  • 5G operates in sub-6GHz LTE and DC (Dual Connectivity) with non-stand alone (NSA), and when NR operates in stand-alone mode (Stand Alone, SA) .
  • SA stand-alone mode
  • simultaneous uplink transmission in LTE and 5G uplink carriers causes interference problems due to harmonic and inter-modulation products, Adds difficulties.
  • LTE uplink and uplink transmission are set at one uplink frequency, performing uplink transmission at the same time may cause interference problems due to harmonic and inter-modulation products.
  • uplink and downlink reception are set at different frequencies to the UE, harmonic and inter-modulation products of uplink transmissions at certain different frequencies may cause self-interference in downlink reception of the UE.
  • the present invention relates to performing uplink transmission on one uplink carrier at a given time when LTE and NR uplink carriers are set in the UE.
  • the present invention provides a method and apparatus for performing only one uplink transmission at a certain instant in consideration of the TA value when different timing alignment (TA) values are applied even if synchronization does not coincide with synchronization of LTE or NR transmission do.
  • TA timing alignment
  • a coexistence system in which the LTE cell and the 5G cell coexist and are combined in DC (dual connectivity) or CA (carrier aggregation), or a coexistence system in which the LTE cell and the 5G cell operate in stand- .
  • FIG. 3 4, and 5 are diagrams illustrating first, second, and third communication systems 300, 400, and 500 to which the present invention is applied.
  • the above drawings all show two different systems, LTE system and 5G system coexisting, and the measures proposed by the present invention are applied to both the system of FIG. 3, the system of FIG. 4, and the system of FIG. 5 It is possible.
  • FIG. 3A illustrates a case where LTE cell 302 and 5G cell 303 coexist in one base station 301 in the network.
  • the terminal 304 may be an LTE capable terminal having an LTE transmission / reception module, a 5G capable terminal having a 5G transmission / reception module, or a terminal having an LTE transmission / reception module / 5G transmission / reception module at the same time.
  • the terminal 304 acquires synchronization through the synchronization signal transmitted from the LTE cell 302 or the 5G cell 303 and transmits the synchronization information to the base station 301 and the LTE cell 302 or the 5G cell 303 ) To transmit and receive data.
  • the uplink control transmission is performed through the LTE cell 302 when the LTE cell is a P cell and through the 5G cell 303 when the 5G cell is a P cell.
  • the base station 301 may allow the terminal 304 to perform uplink transmission through one cell (or uplink carrier) among the LTE cell 302 and the 5G cell 303 at a moment.
  • the UE 304 receives information on which cell (or uplink carrier) among the LTE cell 302 and the 5G cell 303 to perform uplink transmission from the base station, and determines, based on the received information, Uplink transmission can be performed.
  • the information may be explicitly transmitted through an upper layer signal or a downlink physical control signal and may be implicitly transmitted from the cell (or downlink carrier) to which the downlink data scheduling is transmitted (or an uplink carrier SIB linked to the downlink carrier) ).
  • the LTE cell and the 5G cell may have a plurality of serving cells, and may support a total of 32 serving cells.
  • the base station 301 includes both an LTE transmission / reception module (system) and a 5G transmission / reception module (system), and the base station 301 can manage the LTE system and the 5G system in real time Do. For example, if the LTE system and the 5G system are operated at different times by dividing resources in time, it is possible to dynamically select the allocation of time resources of the LTE system and the 5G system.
  • the UE 304 transmits a signal indicating allocation of resources (time resources, frequency resources, antenna resources, spatial resources, etc.) managed by the LTE cell and the 5G cell from the LTE cell 302 or the 5G cell 303 It is possible to know through which resources the data reception from the LTE cell 302 and the 5G cell 303 are respectively performed.
  • the base station 301 transmits an LTE or 5G resource allocation signal to the terminal 304.
  • the signal may be an upper signal or a physical signal.
  • the LTE or 5G resource allocation signal is information indicating where the LTE or 5G resource is located.
  • the LTE or 5G resource allocation signal includes frequency information (carrier frequency, physical resource block), time information (MBSFN A sub-frame information for a 5G transmission, a reserved resource or blank resource information for determining that 5G terminals are not used for 5G transmission, a reserved resource Or information indicating that the 5G signal included in the blank resource is punctured when it is rate matched), antenna information, spatial information, duplex information (FDD DL, UL carrier information, TDD UL / DL configuration Information about the LAA operation, information about LAA operation), reference signal, or whether the LTE / 5G resource is occupied by the UE in real time And the like.
  • the 5G resource allocation signal may include whether the 5G resource is an LTE uplink subframe or an LTE MBSFN subframe.
  • the 5G resource allocation signal may also include whether the 5G resource starts in the first OFDM symbol, starts in the second OFDM symbol, or starts in the third OFDM symbol.
  • the 5G resource allocation signal includes offset information indicating a position at which a 5G resource starts in each subframe or each slot or a period and an offset indicating a frequency and a location of a time resource for searching for a 5G downlink control channel .
  • the 5G resource allocation signal may also include whether a 5G transmission is performed over 12 OFDM symbols or over 13 OFDM symbols and over 14 OFDM symbols.
  • the 5G resource allocation signal may include information required to perform uplink transmission through one cell (or uplink carrier) among the LTE cell and the 5G cell. For example, it may include an uplink transmission pattern indicating to which cell to perform uplink transmission in each slot or a minislot, or information on a TA (Timing Advance) value for each cell. Synchronization information in the LTE system may be additionally obtained by the terminal 304 and transmitted by the base station 301. [
  • the base station 301 transmits synchronization and system information for the 5G to the terminal 304.
  • the sync signal for 5G may be transmitted a separate sync signal for eMBB, mMTC, URLLC using different numerology
  • the common sync signal may be transmitted to a specific 5G resource using one numerology.
  • the above system information can be transmitted with a common system signal to a specific 5G resource using one numerology, and separate system information can be transmitted for eMBB, mMTC, and URLLC using different numerology.
  • the base station 301 transmits and receives data for the 5G service to the terminal 304 from the 5G resource. At this time, the base station 301 can receive uplink transmission from the UE 304 through one cell (or uplink carrier).
  • the 5G capable terminal 304 receives an LTE or 5G resource allocation signal from the base station 301.
  • the signal may be an upper signal or a physical signal.
  • the LTE or 5G resource allocation signal is information indicating where the LTE or 5G resource is located.
  • the LTE or 5G resource allocation signal includes frequency information (carrier frequency, physical resource block, etc.), time information (MBSFN subframe for 5G transmission, Information indicating uplink subframes for 5G transmission, reserved resources or blank resource information for determining that 5G terminals are not used for 5G transmission, and 5G signals included in reserved resources or blank resources indicating puncturing when rate matching is performed 5G resources due to transmission of a reference signal or a synchronization signal, whether or not the UE has received real-time information on the LTE / 5G resource, And the like.
  • frequency information carrier frequency, physical resource block, etc.
  • time information MMSFN subframe for 5G transmission
  • Information indicating uplink subframes for 5G transmission Information indicating uplink subframes for 5G transmission
  • reserved resources or blank resource information for determining that 5G terminals are not used for 5G transmission
  • the 5G resource allocation signal may include whether the 5G resource is an LTE uplink subframe or an LTE MBSFN subframe.
  • the 5G resource allocation signal may also include whether the 5G resource starts in the first OFDM symbol, starts in the second OFDM symbol, or starts in the third OFDM symbol.
  • the 5G resource allocation signal includes offset information indicating a position at which a 5G resource starts in each subframe or each slot or a period and an offset indicating a frequency and a location of a time resource for searching for a 5G downlink control channel .
  • the 5G resource allocation signal may also include whether a 5G transmission is performed over 12 OFDM symbols or over 13 OFDM symbols and over 14 OFDM symbols.
  • the 5G resource allocation signal may include information required to perform uplink transmission through one cell (or uplink carrier) among the LTE cell and the 5G cell. For example, it may include an uplink transmission pattern indicating to which cell to perform uplink transmission in each slot or a minislot, or information on a TA (Timing Advance) value for each cell. Synchronization information in the LTE system may be additionally obtained by the 5G capable terminal and may be transmitted by the base station 301. [
  • the terminal 304 acquires synchronization from the synchronization signal for the 5G transmitted by the base station 301, and receives the system information transmitted by the base station 301.
  • the synchronization signal for 5G may be a separate synchronization signal for eMBB, mMTC, URLLC using other numerology, or may be a common synchronization signal transmitted to a specific 5G resource using one numerology.
  • the above system information can be received with a common system signal on a specific 5G resource using one numerology, and separate system information can be received for eMBB, mMTC, URLLC using different numerology.
  • the UE 304 transmits and receives data for the 5G service from the 5G resource to the base station 301. At this time, the UE 304 can perform uplink transmission to the Node B 301 through one cell (or uplink carrier).
  • FIG. 4A shows an LTE macro base station 401 for wide coverage in a network and a 5G small base station 402 for increasing data transmission amount.
  • the terminal 404 may be an LTE capable terminal having an LTE transmission / reception module, a 5G capable terminal having a 5G transmission / reception module, or a terminal having an LTE transmission / reception module / 5G transmission / reception module at the same time.
  • the terminal 404 acquires synchronization through the synchronization signal transmitted from the LTE base station 401 or the 5G base station 402 and transmits the data through the LTE base station 401 and the 5G base station 402 Send and receive.
  • the uplink control transmission is performed through the LTE cell 401 when the LTE cell is a P cell and through the 5G cell 402 when the 5G cell is a P cell.
  • the LTE macro base station 401 or the 5G small base station 402 transmits the terminal 404 to the LTE macro base station 401 and the 5G small base station 402 through one cell of the base station (or uplink carrier) Link transmission.
  • the terminal 404 transmits information on which of the LTE macro base station 401 and the 5G small base station 402 to perform uplink transmission through a cell (or an uplink carrier) of a base station to the LTE macro base station 401 or the 5G small base station 402, and perform the uplink transmission in a cell determined based on the received information.
  • the information may be explicitly transmitted through an upper layer signal or a downlink physical control signal and may be explicitly transmitted from the cell (or downlink carrier) of the base station to which the downlink data scheduling is transmitted to the cell Uplink carrier).
  • the LTE base station 401 and the 5G base station 402 have an ideal backhaul network or a non-ideal backhaul network. Therefore, even if the uplink transmission is transmitted only to the LTE base station 401, the 5G base station 402 can communicate with the base station 401 through the X2 communication 403, It is possible to receive information from the LTE base station 401 in real time.
  • the LTE cell and the 5G cell may have a plurality of serving cells, and may support a total of 32 serving cells.
  • the base station 401 or 402 can manage LTE system and 5G system in real time. For example, when the base station 401 divides resources in time and operates the LTE system and the 5G system at different times, the assignment of time resources (uplink time resources or uplink frequency resources or antenna resources or space resources, A downlink time resource, a downlink frequency resource, etc.) and transmit the signal to another base station 402 at X2.
  • the terminal 404 allocates resources (uplink time resources or uplink frequency resources, antenna resources or spatial resources, downlink time resources, downlink frequency resources, downlink frequency resources, Resource, etc.) of the LTE cell 401 and the 5G cell 402, it is possible to know through which resource the data transmission / reception from the LTE cell 401 and the 5G cell 402 is performed.
  • resources uplink time resources or uplink frequency resources, antenna resources or spatial resources, downlink time resources, downlink frequency resources, downlink frequency resources, Resource, etc.
  • the base station 401 or 402 can operate the LTE system and the 5G system semi-statically. For example, when the base station 401 divides resources in time and operates the LTE system and the 5G system at different times, the assignment of time resources (uplink time resources or uplink frequency resources or antenna resources or space resources, A downlink time resource, a downlink frequency resource, and the like), and transmits the signal to the other base station base station 402 in advance by X2, thereby enabling the resource division of the LTE system and the 5G system.
  • time resources uplink time resources or uplink frequency resources or antenna resources or space resources, A downlink time resource, a downlink frequency resource, and the like
  • the terminal 404 allocates resources (uplink time resources or uplink frequency resources, antenna resources or spatial resources, downlink time resources, downlink frequency resources, downlink frequency resources, Resource, etc.) of the LTE cell 401 and the 5G cell 402, it is possible to know through which resource the data transmission / reception from the LTE cell 401 and the 5G cell 402 is performed.
  • resources uplink time resources or uplink frequency resources, antenna resources or spatial resources, downlink time resources, downlink frequency resources, downlink frequency resources, Resource, etc.
  • the base station 401 transmits an LTE or 5G resource allocation signal to the 5G base station 402 as X2 403, and transmits the LTE or 5G resource allocation signal to the terminal.
  • the allocation of time resources of the LTE system and the 5G system is selected, and the assignment information is transmitted to the other base station base station 402 by X2, Resource classification is possible.
  • the signal may be an upper signal or a physical signal.
  • the LTE or 5G resource allocation signal is information indicating where the LTE or 5G resource is located.
  • the LTE or 5G resource allocation signal includes frequency information (carrier frequency, physical resource block, etc.), time information (MBSFN subframe for 5G transmission, Information indicating uplink subframes for 5G transmission, reserved resources or blank resource information for determining that 5G terminals are not used for 5G transmission, and 5G signals included in reserved resources or blank resources indicating puncturing when rate matching is performed 5G resources due to transmission of a reference signal or a synchronization signal, whether or not the UE has received real-time information on the LTE / 5G resource, And the like.
  • frequency information carrier frequency, physical resource block, etc.
  • time information MMSFN subframe for 5G transmission
  • Information indicating uplink subframes for 5G transmission Information indicating uplink subframes for 5G transmission
  • reserved resources or blank resource information for determining that 5G terminals are not used for 5G transmission
  • the 5G resource allocation signal may include whether the 5G resource is an LTE uplink subframe or an LTE MBSFN subframe.
  • the 5G resource allocation signal may also include whether the 5G resource starts in the first OFDM symbol, starts in the second OFDM symbol, or starts in the third OFDM symbol.
  • the 5G resource allocation signal includes offset information indicating a position at which a 5G resource starts in each subframe or each slot or a period and an offset indicating a frequency and a location of a time resource for searching for a 5G downlink control channel .
  • the 5G resource allocation signal may also include whether a 5G transmission is performed over 12 OFDM symbols or over 13 OFDM symbols and over 14 OFDM symbols.
  • the 5G resource allocation signal may include information required to perform uplink transmission through one cell (or uplink carrier) among the LTE cell and the 5G cell. For example, it may include an uplink transmission pattern indicating to which cell to perform uplink transmission in each slot or a minislot, or information on a TA (Timing Advance) value for each cell. Synchronization information in the LTE system may be additionally obtained by the terminal 404 or may be transmitted by the base station 401 or 402.
  • the base station (401 or 402) transmits synchronization and system information for the 5G to the terminal (404).
  • the sync signal for 5G may be transmitted a separate sync signal for eMBB, mMTC, URLLC using different numerology
  • the common sync signal may be transmitted to a specific 5G resource using one numerology.
  • the above system information can be transmitted with a common system signal to a specific 5G resource using one numerology, and separate system information can be transmitted for eMBB, mMTC, and URLLC using different numerology.
  • step 412 the base station 401 or 402 transmits data for the 5G service to the terminal 404 from the 5G resource. At this time, only one of the base stations 401 and 402 can receive the uplink transmission from the terminal 404 at a certain moment.
  • the terminal 404 receives an LTE or 5G resource allocation signal from the base station 401 or 402.
  • the signal may be an upper signal or a physical signal.
  • the LTE or 5G resource allocation signal is information indicating where the LTE or 5G resource is located.
  • the LTE or 5G resource allocation signal includes frequency information (carrier frequency, physical resource block, etc.), time information (MBSFN subframe for 5G transmission, Information indicating uplink subframes for 5G transmission, reserved resources or blank resource information for determining that 5G terminals are not used for 5G transmission, and 5G signals included in reserved resources or blank resources indicating puncturing when rate matching is performed 5G resources due to transmission of a reference signal or a synchronization signal, whether or not the UE has received real-time information on the LTE / 5G resource, based on the received information, the antenna information, the spatial information, the duplex information (FDD DL, UL carrier information, TDD UL / DL configuration information, And the like.
  • frequency information carrier frequency, physical resource block, etc.
  • MMSFN subframe for 5G transmission time information
  • Information indicating uplink subframes for 5G transmission Information indicating uplink subframes for 5G transmission
  • reserved resources or blank resource information for determining that 5G terminals are not used for 5G transmission
  • the 5G resource allocation signal may include whether the 5G resource is an LTE uplink subframe or an LTE MBSFN subframe.
  • the 5G resource allocation signal may also include whether the 5G resource starts in the first OFDM symbol, starts in the second OFDM symbol, or starts in the third OFDM symbol.
  • the 5G resource allocation signal includes offset information indicating a position at which a 5G resource starts in each subframe or each slot or a period and an offset indicating a frequency and a location of a time resource for searching for a 5G downlink control channel .
  • the 5G resource allocation signal may also include whether a 5G transmission is performed over 12 OFDM symbols or over 13 OFDM symbols and over 14 OFDM symbols.
  • the 5G resource allocation signal may include information required to perform uplink transmission through one cell (or uplink carrier) among the LTE cell and the 5G cell. For example, it may include an uplink transmission pattern indicating to which cell to perform uplink transmission in each slot or a minislot, or information on a TA (Timing Advance) value for each cell. Synchronization information in the LTE system may be additionally obtained by the 5G capable terminal and may be transmitted by the base station 401 or 402.
  • the terminal 404 acquires synchronization from the synchronization signal for 5G transmitted by the base station 401 or 402, and receives the system information transmitted by the base station 401 or 402.
  • the synchronization signal for 5G may be a separate synchronization signal for eMBB, mMTC, URLLC using other numerology, or may be a common synchronization signal transmitted to a specific 5G resource using one numerology.
  • the above system information can be received with a common system signal on a specific 5G resource using one numerology, and separate system information can be received for eMBB, mMTC, URLLC using different numerology.
  • the terminal 404 transmits and receives data for the 5G service from the 5G resource to the base station 401 or 402. At this time, the terminal 404 can perform uplink transmission through one cell (or an uplink carrier) to one base station at one moment of the base stations 401 and 402.
  • FIG. 5A shows the LTE base station 501 and the 5G base station 504, respectively.
  • the LTE base station 501 and the 5G base station 504 are respectively stand-alone, and the terminal can camp in each base station.
  • the LTE capable terminal 503 having the LTE transmission and reception module can camp on the LTE base station 501 and the LTE capable terminal 503 can acquire synchronization through the synchronization signal transmitted from the LTE base station 501, And then transmit / receive data to / from the LTE base station 501 (502).
  • the 5G capable terminal 506 having the 5G transmission / reception module can camp on the 5G base station 504 and the 5G capable terminal 506 can acquire synchronization on the synchronization signal transmitted from the 5G base station 504, And then transmits / receives data to / from the 5G base station 504 (505).
  • the integrated controller 507 controls the LTE base station 501 and the 5G base station 504 in real- It is possible.
  • the integrated controller 507 divides resources on time and operates the LTE system and the 5G system at different times, it dynamically selects allocation of time resources of the LTE system and the 5G system and transmits the signals to the LTE base station 501 To the 5G base station 504.
  • the LTE-capable terminal 503 receives a signal indicating a resource capable of transmitting / receiving an LTE signal from the LTE base station 501, thereby knowing through which resource the data transmission / reception from the LTE base station is performed.
  • the 5G capable terminal 506 transmits a signal indicating a resource (uplink time resource, uplink frequency resource, antenna resource, spatial resource, downlink time resource, downlink frequency resource, etc.) to which 5G signal can be transmitted from the 5G base station 504 It is possible to know through which resource the data transmission / reception from the 5G base station is performed.
  • the base station procedure and the terminal procedure of FIG. 4 are basically followed. If there is a non-ideal backhaul, it is impossible to communicate with the fast base station X2. Accordingly, the BS 501 or 504 can operate the LTE system and the 5G system semi-statically. For example, when the base station 501 or 504 divides resources in time and operates the LTE system and the 5G system at different times, it selects the allocation of time resources of the LTE system and the 5G system, and transmits the signal to the other base station base stations 504 or 501), it is possible to distinguish resources between the LTE system and the 5G system.
  • the LTE-capable terminal 503 receives a signal indicating a resource capable of transmitting / receiving an LTE signal from the LTE base station 501, thereby knowing through which resource the data transmission / reception from the LTE base station is performed.
  • the 5G capable terminal 506 transmits a signal indicating a resource (uplink time resource, uplink frequency resource, antenna resource, spatial resource, downlink time resource, downlink frequency resource, etc.) to which 5G signal can be transmitted from the 5G base station 504 It is possible to know through which resource the data transmission / reception from the 5G base station is performed.
  • the base station 504 transmits synchronization and system information for 5G from the resources set for the 5G transmission to the 5G capable terminal 506.
  • the sync signal for 5G may be transmitted a separate sync signal for eMBB, mMTC, URLLC using different numerology
  • the common sync signal may be transmitted to a specific 5G resource using one numerology.
  • the above system information can be transmitted with a common system signal to a specific 5G resource using one numerology, and separate system information can be transmitted for eMBB, mMTC, and URLLC using different numerology.
  • the 5G base station 504 transmits an LTE or 5G resource allocation signal to the terminal 506.
  • the signal may be an upper signal or a physical signal.
  • the LTE or 5G resource allocation signal is information indicating where the LTE or 5G resource is located.
  • the LTE or 5G resource allocation signal includes frequency information (carrier frequency, physical resource block, etc.), time information (MBSFN subframe for 5G transmission, Information indicating uplink subframes for 5G transmission, reserved resources or blank resource information for determining that 5G terminals are not used for 5G transmission, and 5G signals included in reserved resources or blank resources indicating puncturing when rate matching is performed 5G resources due to transmission of a reference signal or a synchronization signal, whether or not the UE has received real-time information on the LTE / 5G resource, And the like.
  • frequency information carrier frequency, physical resource block, etc.
  • time information MMSFN subframe for 5G transmission
  • Information indicating uplink subframes for 5G transmission Information indicating uplink subframes for 5G transmission
  • reserved resources or blank resource information for determining that 5G terminals are not used for 5G transmission
  • the 5G resource allocation signal may include whether the 5G resource is an LTE uplink subframe or an LTE MBSFN subframe.
  • the 5G resource allocation signal may also include whether the 5G resource starts in the first OFDM symbol, starts in the second OFDM symbol, or starts in the third OFDM symbol.
  • the 5G resource allocation signal includes offset information indicating a position at which a 5G resource starts in each subframe or each slot or a period and an offset indicating a frequency and a location of a time resource for searching for a 5G downlink control channel .
  • the 5G resource allocation signal may also include whether a 5G transmission is performed over 12 OFDM symbols or over 13 OFDM symbols and over 14 OFDM symbols.
  • the 5G resource allocation signal may include information required to perform uplink transmission through one cell (or uplink carrier) among the LTE cell and the 5G cell. For example, it may include an uplink transmission pattern indicating to which cell to perform uplink transmission in each slot or a minislot, or information on a TA (Timing Advance) value for each cell. Synchronization information in the LTE system may be additionally obtained by the 5G capable terminal or may be transmitted by the base station 501.
  • the LTE or 5G resource allocation is determined from the aggregation controller 507 and transmitted to the 5G base station 504 in X2, thereby dividing the resources and operating the LTE system and the 5G system from other resources
  • the resource allocation of the LTE system and the 5G system is selected and the allocation information is transmitted to the base station 501 or 504 by X2.
  • the LTE base station or the 5G base station may select an LTE or 5G resource allocation and transmit it to another base station as in the base station procedure of FIG.
  • the base station 504 transmits and receives data for the 5G service from the 5G resource to the 5G capable terminal 506 with the terminal. At this time, the base station 504 can receive the uplink transmission from the 5G capable terminal 506 through one cell (or uplink carrier) at a certain instant.
  • the 5G capable terminal 506 acquires synchronization from the synchronization signal for 5G transmitted from the base station 504 in the resource set for the 5G transmission, and transmits the system information .
  • the synchronization signal for 5G may be a separate synchronization signal for eMBB, mMTC, URLLC using other numerology, or may be a common synchronization signal transmitted to a specific 5G resource using one numerology.
  • the above system information can be received with a common system signal on a specific 5G resource using one numerology, and separate system information can be received for eMBB, mMTC, URLLC using different numerology.
  • the 5G capable terminal 506 receives the LTE or 5G resource allocation signal from the base station 504.
  • the signal may be an upper signal or a physical signal.
  • the LTE or 5G resource allocation signal is information indicating where the LTE or 5G resource is located.
  • the LTE or 5G resource allocation signal includes frequency information (carrier frequency, physical resource block, etc.), time information (MBSFN subframe for 5G transmission, Information indicating uplink subframes for 5G transmission, reserved resources or blank resource information for determining that 5G terminals are not used for 5G transmission, and 5G signals included in reserved resources or blank resources indicating puncturing when rate matching is performed 5G resources due to transmission of a reference signal or a synchronization signal, whether or not the UE has received real-time information on the LTE / 5G resource, based on the received information, the antenna information, the spatial information, the duplex information (FDD DL, UL carrier information, TDD UL / DL configuration information, And the like.
  • frequency information carrier frequency, physical resource block, etc.
  • MMSFN subframe for 5G transmission time information
  • Information indicating uplink subframes for 5G transmission Information indicating uplink subframes for 5G transmission
  • reserved resources or blank resource information for determining that 5G terminals are not used for 5G transmission
  • the 5G resource allocation signal may include whether the 5G resource is an LTE uplink subframe or an LTE MBSFN subframe.
  • the 5G resource allocation signal may also include whether the 5G resource starts in the first OFDM symbol, starts in the second OFDM symbol, or starts in the third OFDM symbol.
  • the 5G resource allocation signal includes offset information indicating a position at which a 5G resource starts in each subframe or each slot or a period and an offset indicating a frequency and a location of a time resource for searching for a 5G downlink control channel .
  • the 5G resource allocation signal may also include whether a 5G transmission is performed over 12 OFDM symbols or over 13 OFDM symbols and over 14 OFDM symbols.
  • the 5G resource allocation signal may include information required to perform uplink transmission through one cell (or uplink carrier) among the LTE cell and the 5G cell. For example, it may include an uplink transmission pattern indicating to which cell to perform uplink transmission in each slot or a minislot, or information on a TA (Timing Advance) value for each cell. Synchronization information in the LTE system may be additionally obtained by the 5G capable terminal or may be transmitted by the base station 501.
  • the 5G capable terminal 506 transmits and receives data for the 5G service to the base station 504 in the 5G resource. At this time, the 5G capable terminal 506 can perform uplink transmission to the base station 504 through one cell (or uplink carrier).
  • FIG. 6 is a diagram showing the first embodiment 600 proposed by the present invention.
  • the terminal is configured to receive a plurality of uplink frequencies of the carrier A 601 and the carrier B 602 through reception of an upper layer signal in the communication system of FIG. 3, FIG. 4, and FIG.
  • the terminal is set as TA1 612 as a timing advance through reception of an upper layer signal, and in order for the uplink transmission in the carrier B 602, (613) through the reception of an upper layer signal.
  • the operation of the terminal according to the present invention is described assuming that the carrier A 601 and the carrier B 602 are different from each other.
  • the operation of the terminal according to the present invention can be applied even when there are a plurality of uplink transmissions in the carrier.
  • the uplink transmission 1 610 through the carrier A 601 in the slot n-1 is indicated to the terminal from the base station, and the uplink transmission 2 611 through the carrier B 602 in the slot n is transmitted from the base station to the terminal Directed.
  • the indicating method may be scheduling by a downlink physical control signal and setting by an upper layer signal.
  • the UE receives an upper layer signal or a downlink physical control channel from the base station and transmits the uplink transmission 1 610 or the uplink transmission 2 611.
  • the uplink transmission 1 610 or the uplink transmission 2 611 may be an uplink data channel, an uplink control channel, an uplink reference signal, or the like.
  • the uplink transmission 1 610 through the carrier A 610 in the slot n-1 and the uplink transmission 2 611 through the carrier B 611 in the slot n are different from the TA1 612 and the TA2 613
  • the transmission areas of uplink transmission 1 610 and uplink transmission 2 611 may overlap in the time domain since the uplink transmissions in carrier A 601 and carrier B 602 may not be synchronized 614 , 615). Therefore, interference problems arise due to harmonic and inter-modulation products, which are caused by overlapping two uplink transmissions in the time domain. Therefore, in this case, the terminal provides a scheme for performing only one uplink transmission at a moment.
  • the terminal when the LTE transmission and the 5G transmission are performed at the same time, the terminal always gives priority to the LTE transmission. That is, LTE transmits completely without dropping symbols, and 5G transmission overlapping in time with LTE transmission drops or overlaps overlapping portions.
  • a terminal performs LTE transmission / reception in a specific carrier by receiving LTE synchronization in a specific carrier, performing system information reception in accordance with the LTE standard, performing random access, RRC connection, control / data channel / reference signal transmission / reception, Is determined to be an LTE transmission.
  • the UE transmits the uplink 1 610 completely and the uplink 1 610 overlaps uplink 614 in the time domain. Only the remaining part of the uplink 2 (611) is transmitted without transmitting 615 of the uplink (611). Or if there is a portion 615 of uplink transmission 2 611 overlapping in the time domain with 614, the UE drops downlink 2 (611).
  • the uplink 2 (611) is an uplink control channel
  • the terminal can transmit a short PUCCH instead of the long PUCCH when only the remaining part of the uplink 2 (611) is transmitted without transmitting 615 of the uplink 2 (611) have.
  • the terminal may transmit the number of symbols of the long PUCCH by subtracting the number of symbols of the portion 615 from X1, and changing the symbol to X2 smaller than X1. For example, if X1 is 14 and 615 is 2 symbols, X2 may be determined to be 12.
  • the 5G base station If the 5G base station does not know the value of TA1 (612) set by the LTE base station to the UE, the 5G base station assumes puncturing for reception of uplink 2 (611) and decodes it. That is, the 5G base station maps 0 to the received value in the portion 615, and performs decoding of the uplink 2 (611).
  • the 5G base station assumes and decodes the rate mapping for reception of the uplink 2 (611). That is, the 5G base station performs decoding by mapping uplink / reference signals using only the remaining part, assuming that there is no 615 part in uplink 2 (611).
  • the terminal does not have the 615 part in the uplink transmission 2 (611), and the uplink channel / reference signal is mapped using only the remaining part to perform transmission.
  • the TA1 612 and the TA2 613 may be exchanged through a backhaul between the LTE and the 5G base station (backhaul, X2 or Xn interface), and the terminal may transmit the TA1 612 set by the LTE base station to the 5G base station, Data channel.
  • the UE transmits uplink transmission 1 610 overlapping with 615 in uplink transmission 2 611 in the time domain, Quot; 614 " Then, it transmits the uplink 2 (611) completely. Or if there is a portion 614 of uplink transmission 1 610 overlapping in the time domain with 615, the terminal drops uplink 1 610.
  • the uplink 1 (610) is an uplink control channel
  • the terminal can transmit a short PUCCH instead of the long PUCCH when transmitting only the remaining portion of the uplink 1 (610) without transmitting 614 of the uplink 1 610 have.
  • the terminal may transmit the number of symbols of the long PUCCH by subtracting the number of symbols of the portion 614 from X1, and changing it to X2 smaller than X1. For example, when X1 is 14 and 614 is 2 symbols, X2 may be determined to be 12.
  • the 5G base station assumes puncturing for reception of the uplink 1 (610). That is, the 5G base station maps 0 to the received value in the portion 614, and performs decoding of the uplink 1 (610).
  • the 5G base station assumes and decodes the rate mapping for the reception of the uplink transmission 1 610. That is, the 5G base station performs decoding by mapping uplink / reference signals using only the remaining part, assuming that there is no 614 part in uplink 1 (610).
  • the UE does not have the 614 portion in the uplink 1 (610) and the uplink channel / reference signal is mapped using only the remaining portion to perform transmission.
  • the TA1 612 and the TA2 613 may be exchanged through a backhaul between the LTE and the 5G base station (backhaul, X2 or Xn interface), and the terminal may transmit the TA2 613 set by the LTE base station to the 5G base station, Data channel.
  • the UE performs transmission based on the priority described below.
  • the first way to determine the priority is if the uplink 1 (610) is 5G and the uplink 2 (611) is 5G, the terminal gives priority to the transmission in time. That is, the UE completely transmits the uplink transmission 1 610 and transmits only the remaining portion of the uplink transmission 2 611 without transmitting 615 of the uplink transmission 2 611 overlapping in the time domain with 614 in the uplink transmission 1 610 send.
  • the second way of determining the priority is to prioritize the uplink transmission from the primary cell (Pcell). If the uplink transmission 1 610 is the uplink transmission transmitted in the primary cell and the uplink transmission 2 611 is the uplink transmission in the secondary cell (Scell), the UE transmits the uplink 1 610 completely And transmits only the remaining portion of the uplink 2 (611) without transmitting 615 in uplink transmission 1 (610) and 615 in uplink transmission 2 (611) overlapping in time domain.
  • a third method for determining priority is to determine which transmission should be prioritized in the overlapping portion by the type of channel, the type of UCI (Uplink Control Information), the payload size, and the like. That is, the UE transmits only the uplink transmission having the priority order, and does not transmit the uplink transmission having the lower priority, overlapping with the uplink transmission having the priority, and transmits only the uplink transmission having the non-overlapping priority. For example, when the uplink 1 (610) is the uplink data channel and the uplink 2 (611) is the uplink control channel and the time collision occurs (614, 615) as shown in FIG. 6, The uplink control channel is preferentially transmitted.
  • the terminal transmits only the remaining portion of the uplink 1 (610) without transmitting the temporally overlapping portion 614 of the uplink data channel of the uplink 1 (610).
  • the uplink data 1 610 is the uplink data channel including the control information
  • the uplink data 2 611 is the uplink data channel including only the data information
  • the UE first transmits the uplink data channel including the control information of the uplink 1 (610). That is, the terminal transmits only the remaining portion of the uplink 2 (611) without transmitting the temporally overlapping portion 615 of the uplink data channel of the uplink 2 (611).
  • the uplink transmission 1 610 is an uplink control channel including channel information
  • the uplink transmission 2 611 is an uplink control channel including A / N transmission
  • the channel information transmission and A / N transmission (614, 615) the UE transmits the A / N of the uplink 2 (611) with priority. That is, the UE transmits only the remaining portion of the uplink 1 (610) without transmitting 614 which is temporally overlapped with the A / N transmission in the uplink 1 (610).
  • the uplink control channel information transmission with a large payload size and the uplink control channel information transmission with a relatively small payload size collide with each other in time
  • the uplink control channel transmission having a large payload size is prioritized and transmitted.
  • a guard interval for adjusting the uplink transmission power is required.
  • the UE transmits the entire portion of the uplink 2 (611) without transmitting 615 of the uplink 2 (611), and transmits only the remaining portion of the uplink 2 (611).
  • the UE does not transmit 614 of uplink 1 610 but transmits only the remaining portion of uplink 1 610 and transmits uplink 2 611 completely.
  • only the non-overlapping portions are transmitted according to the waveform applied to the 5G uplink transmission or the lower priority downlink transmissions, which should be dropped by always giving priority to the LTE transmission in the first, and only the overlapping portion is dropped It is possible to drop entirely when there is overlapping part.
  • the waveform of the uplink transmission 2 611 is DFT-S In the case of -OFDM (discrete Fourier transform spread OFDM), the terminal does not transmit 615 but transmits only the remaining part of uplink 2 (611).
  • the waveform of the uplink transmission 2 611 is CP-OFDM (cyclic prefix based OFDM), when the UE has a portion 615 of the uplink transmission 2 611 overlapping with the base station 614 in the time domain, 611).
  • the reason why the above terminal operation can be applied is as follows.
  • the time-based mapping is applied when the upward waveform is DFT-S-OFDM, even if some OFDM symbols are dropped, only some symbols of the codeword are not transmitted, so that the base station can decode the uplink data.
  • the uplink waveform is the CP-OFDM, if the frequency priority mapping is applied, there is a high possibility that the entire codeword will not be transmitted when some OFDM symbols are dropped. In this case, it is impossible for the base station to decode the uplink data.
  • the uplink waveform may be determined according to the waveform indicated in the msg 2 to the UE during random access, and may be indicated to the UE by an upper signal or a physical signal.
  • the terminal performs uplink transmission according to the indicated waveform.
  • the terminal may cause self-interference in downlink reception due to harmonic and inter-modulation products of uplink transmissions at certain different frequencies. Therefore, in order to solve the self-interference problem of the downlink reception of the UE, a method of performing uplink or downlink transmission only at a moment considering the TA value according to the uplink transmission will be described.
  • FIG. 7 is a diagram showing a second embodiment 700 proposed by the present invention.
  • a plurality of frequencies, carrier A 701 and carrier B 702 are set to the terminal through reception of an upper layer signal in the communication systems of FIGS. 3, 4, and 5.
  • the UE performs downlink reception in the carrier A 701 and that the UE is set as a timing advance through the reception of the upper layer signal for the uplink transmission in the carrier B 702 .
  • the operation of the terminal according to the present invention is described assuming that the carrier A 701 and the carrier B 702 are different from each other.
  • the carrier A 701 and the carrier B 702 are in the same situation
  • the operation of the terminal according to the present invention can be applied even when downlink reception and uplink transmission are performed in the carrier.
  • the base station is capable of setting a sufficient guard subcarrier in the frequency domain, and that the base station is equipped with a transceiver capable of transmitting and receiving uplink and downlink simultaneously.
  • the indicating method may be scheduling by a downlink physical control signal and setting by an upper layer signal.
  • the UE receives an upper layer signal or a downlink physical control channel from the base station and receives the downlink 1 710 or the uplink 2 711.
  • the downlink transmission 1 710 or the uplink transmission 2 711 may be an uplink and downlink data channel, an uplink and downlink control channel, and an uplink and downlink reference signal.
  • downlink transmission 1 710 through carrier A 710 in slot n-1 and uplink 2 711 through carrier B 711 in slot n are affected by TA 712 and carrier A 701 and the carrier B 702 may not be synchronized, the transmission areas of the downlink transmission 1 710 and the uplink transmission 2 711 may overlap in the time domain (714, 715). Therefore, a self-interference problem occurs in the downlink reception 1 710 of the UE due to the harmonic and inter-modulation products in which the uplink transmissions overlap in the time domain. Therefore, in this case, the terminal provides a method for preventing the transmission / reception operation from colliding at a moment by performing only downward reception or uplink transmission at a moment.
  • LTE and 5G transmission are performed at the same time, the terminal always gives priority to LTE transmission.
  • LTE transmits and receives completely without symbols to be dropped, and 5G that overlaps with LTE in time loses transmission or reception of overlapping portions, or drops entirely.
  • a terminal performs LTE transmission / reception in a specific carrier by receiving LTE synchronization in a specific carrier, performing system information reception in accordance with the LTE standard, performing random access, RRC connection, control / data channel / reference signal transmission / reception, Is determined to be an LTE transmission.
  • the UE receives the downlink transmission 1 710 completely and transmits the uplink transmission 1 710 in the downlink transmission 1 710 to the uplink transmission 2 710 in the time domain. (711) of the uplink 2 (711) without transmitting 715 of the uplink 2 (711). Or if there is a portion 715 of the uplink transmission 2 711 overlapping in the time domain with 714, the terminal drops uplink 2 (711).
  • the uplink 2 (711) is an uplink control channel
  • the terminal can transmit a short PUCCH instead of the long PUCCH when transmitting only the remaining part of the uplink 2 (711) without transmitting 715 of the uplink 2 (711) have.
  • the terminal can transmit the number of symbols of the long PUCCH by subtracting the number of symbols of the portion 715 from X1, and changing the symbol to X2 smaller than X1. For example, if X1 is 14 and 715 is 2 symbols, X2 may be determined to be 12.
  • the 5G base station assumes and decodes rate mapping or puncturing for reception of uplink 2 (711). That is, in the 5G base station, it is assumed that there is no 715 part in the uplink 2 (711), or 0 is mapped and the up channel / reference signal is mapped using only the remaining part to perform decoding.
  • the uplink channel / reference signal is mapped using only the remaining part to perform transmission.
  • the TA 712 may be exchanged through a backhaul (X2 or Xn interface) between the LTE and the 5G base station.
  • the UE transmits downlink 1 710 overlapped with 715 in uplink transmission 2 711 in the time domain upon reception of downlink 1 710, ≪ / RTI > Then, it transmits the uplink 2 (711) completely. 715 requesting retransmission of the downlink 1 (710) without performing reception of the downlink 1 (710), the UE transmits a NACK (710) requesting retransmission of the downlink 1 To the base station.
  • the terminal assumes and decodes puncturing for reception of downlink 1 (710). That is, the terminal maps 0 to the received value in the portion 714, and performs decoding of the downlink 1 (710).
  • the TA 712 may be exchanged through a backhaul (X2 or Xn interface) between the LTE and the 5G base station and may transmit the TA 712 set by the LTE base station to the 5G base station through the uplink control / data channel .
  • a backhaul X2 or Xn interface
  • the UE performs transmission and reception of 5G based on the priority described below.
  • the first scheme for determining the priority is that if the downlink transmission 1 710 is 5G and the uplink transmission 1 711 is 5G, the terminal gives priority to the transmission in time. That is, the UE completely receives the downlink 1 (710) and transmits only the remaining portion of the uplink 2 (711) without transmitting 715 of the uplink 2 (711) overlapping with the 714 in the downlink 1 send. If the uplink transmission is earlier than the downlink transmission, the UE transmits the uplink transmission intact, does not perform downlink transmission in the portion overlapping the uplink transmission portion, and performs only the remaining portion of the downlink transmission based on rate mapping or puncturing And performs reception.
  • the second way to determine the priority is to send and receive data from the primary cell. If the downlink transmission 1 710 is a downlink transmission in a primary cell and the uplink transmission 2 711 is an uplink transmission in a secondary cell, the UE receives the downlink 1 710 completely, (711) of the uplink transmission 2 (711) overlapping in the time domain with 714 in the time domain.
  • a guard interval is required for the UE to switch the RF.
  • 1 710 and transmits only the remaining part of the uplink 2 711 without transmitting 715 of the uplink 2 711.
  • the UE receives only the remaining portion of the downlink 1 (710) and does not transmit the uplink 2 (711) without receiving 714 of the downlink 1 (710).
  • the terminal drops 715 of the uplink 2 (711) It is possible to drop 714 of downlink transmission 1 (710).
  • the reason why the above terminal operation can be applied is as follows. If transmission of a downlink reference signal for decoding a downlink control channel or transmission of a downlink reference signal is set up, if the area is dropped by the terminal, the terminal transmits the downlink data channel indicated by the scheduling of the downlink control channel, Lt; / RTI > can not be performed. Therefore, priority can be given to an area for searching for the downlink control channel or an area including a downlink reference signal for decoding.
  • the setting of the area for searching for the downlink control channel may be indicated to the terminal by the uplink layer signal, and the terminal performs the downlink control channel search in the indicated resource area through the reception of the signal.
  • the downlink reference signal can be determined according to the standard, and the transmission position can be distinguished according to whether the slot-based transmission is set or the mini- slot-based transmission is set by the upper signal.
  • the resource region of the downlink reference signal can be determined based on the location.
  • FIG. 8 is a diagram illustrating a base station apparatus 800 according to the present invention.
  • the controller 801 sets a plurality of carriers to the terminal according to the base station procedure according to the present invention shown in FIGS. 3, 4 and 5 and FIGS. 6 and 7 of the present invention.
  • the terminal 80 transmits /
  • the UE controls the transmission / reception of the LTE / 5G data / control channel and the reference signal according to a method of performing only one uplink / downlink transmission at a moment.
  • the scheduler 803 schedules LTE and 5G data and transmits and receives data to and from the terminal through the LTE and 5G data transceiver 807.
  • FIG. 9 is a diagram illustrating a terminal device 900 according to the present invention.
  • the controller 901 receives the settings for a plurality of carriers from the base station according to the terminal procedure according to the present invention shown in FIGS. 3, 4 and 5 and FIGS. 6 and 7 of the present invention and performs transmission and reception with the base station through each carrier Control of transmission / reception of data / control channels and reference signals of the LTE / 5G according to a method in which the UE performs only one uplink / downlink transmission at a moment according to the present invention.

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

Abstract

La présente invention concerne une technique de communication consistant à fusionner, à une technologie de l'IdO, un système de communication 5G destiné à prendre en charge un débit de transmission de données supérieur à celui d'un système 4G, et un système associé. La présente invention peut être appliquée à des services intelligents (par exemple une maison intelligente, un bâtiment intelligent, une ville intelligente, une voiture intelligente ou une voiture connectée, des soins de santé, l'enseignement numérique, le commerce de détail, les services liés à la sécurité et à la sûreté) sur la base de la technologie de communication 5G et de technologie associée à l'IdO. La présente invention concerne un procédé et un appareil permettant d'effectuer une transmission de liaison montante dans un système de communication sans fil.
PCT/KR2018/007473 2017-07-19 2018-07-02 Procédé et appareil pour effectuer une transmission de canal de liaison montante dans un système de communication cellulaire sans fil WO2019017614A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16/631,731 US11903018B2 (en) 2017-07-19 2018-07-02 Method and apparatus for performing uplink channel transmission in wireless cellular communication system

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20170091395 2017-07-19
KR10-2017-0091395 2017-07-19
KR10-2017-0097218 2017-07-31
KR1020170097218A KR102496875B1 (ko) 2017-07-19 2017-07-31 무선 셀룰라 통신 시스템에서 상향 채널 전송 방법 및 장치

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013048188A2 (fr) * 2011-09-29 2013-04-04 엘지전자 주식회사 Procédé de régulation de la puissance d'émission en liaison montante et dispositif sans fil le mettant en oeuvre
KR20140111655A (ko) * 2011-12-20 2014-09-19 엘지전자 주식회사 무선 통신 시스템에서 상향링크 동기 획득 방법 및 장치
WO2015126130A1 (fr) * 2014-02-19 2015-08-27 삼성전자 주식회사 Procédé et dispositif de sélection et d'attribution d'indice de faisceau de transmission ayant une priorité
WO2015156486A1 (fr) * 2014-04-09 2015-10-15 엘지전자 주식회사 Procédé permettant d'exécuter une commande de puissance et équipement d'utilisateur
KR20160143657A (ko) * 2015-05-08 2016-12-14 엘지전자 주식회사 무선 통신 시스템에서 상향링크 신호를 송신 또는 수신하기 위한 방법 및 이를 위한 장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013048188A2 (fr) * 2011-09-29 2013-04-04 엘지전자 주식회사 Procédé de régulation de la puissance d'émission en liaison montante et dispositif sans fil le mettant en oeuvre
KR20140111655A (ko) * 2011-12-20 2014-09-19 엘지전자 주식회사 무선 통신 시스템에서 상향링크 동기 획득 방법 및 장치
WO2015126130A1 (fr) * 2014-02-19 2015-08-27 삼성전자 주식회사 Procédé et dispositif de sélection et d'attribution d'indice de faisceau de transmission ayant une priorité
WO2015156486A1 (fr) * 2014-04-09 2015-10-15 엘지전자 주식회사 Procédé permettant d'exécuter une commande de puissance et équipement d'utilisateur
KR20160143657A (ko) * 2015-05-08 2016-12-14 엘지전자 주식회사 무선 통신 시스템에서 상향링크 신호를 송신 또는 수신하기 위한 방법 및 이를 위한 장치

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