WO2018202012A1 - Procédé de détermination de cellule, dispositif terminal et dispositif de réseau - Google Patents

Procédé de détermination de cellule, dispositif terminal et dispositif de réseau Download PDF

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Publication number
WO2018202012A1
WO2018202012A1 PCT/CN2018/085120 CN2018085120W WO2018202012A1 WO 2018202012 A1 WO2018202012 A1 WO 2018202012A1 CN 2018085120 W CN2018085120 W CN 2018085120W WO 2018202012 A1 WO2018202012 A1 WO 2018202012A1
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WIPO (PCT)
Prior art keywords
subband
slot format
indication information
format corresponding
terminal device
Prior art date
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Ceased
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PCT/CN2018/085120
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English (en)
Chinese (zh)
Inventor
夏金环
冯淑兰
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • 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
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • 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) or DMT
    • 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

Definitions

  • the present application relates to the field of communications and, more particularly, to a method, terminal device and network device for determining a slot format.
  • 5th generation communication base station (5 th generation Node Base, 5G ) a new air interface (New Radio, NR) standard support type carrier spacing seedy, e.g., subcarrier spacing of 15kHz, 30kHz, 60kHz, 120kHz, 240kHz and 480kHz and the like.
  • NR New Radio
  • the subcarrier spacing in a certain subband is inversely proportional to the length of the OFDM symbol corresponding to the subband, that is, the larger the subcarrier spacing, the OFDM symbol The shorter the length.
  • the base station can implement transmission of different services by adjusting the slot format of the slot.
  • the slot format may be 7 OFDM symbols for downlink transmission (only DL), or both for uplink transmission (only UL), or most symbols for uplink transmission ( UL centric), or most symbols are used for DL centric.
  • the terminal device receives the indication information sent by the base station at the start time of the time slot corresponding to the certain sub-band, and determines the slot format of the corresponding time slot according to the indication information to transmit the corresponding service. That is to say, in the conventional solution, the terminal device only supports the same seed carrier interval type in a certain time domain resource, that is, corresponds to one slot format, and only one type of service can be transmitted.
  • current terminal devices and base stations are capable of supporting types having different subcarrier spacings in different frequency ranges, and therefore a method of determining a slot format in such a scenario is urgently needed.
  • the present application provides a method for determining a slot format, a terminal device, and a network device, which can simultaneously transmit different services and improve transmission efficiency.
  • a first aspect provides a method for determining a slot format, the method comprising: determining a slot format corresponding to a reference subband in a plurality of subbands; determining the plurality of subbands according to a slot format corresponding to the reference subband The target subband in the corresponding slot format, the type of the subcarrier spacing in the target subband is different from the type of the subcarrier spacing in the reference subband.
  • the type of the carrier interval is different from the type of the subcarrier spacing in the reference subband, so that the terminal device can simultaneously transmit different services, thereby improving transmission efficiency.
  • the method further includes: receiving first indication information, where the first indication information is used to indicate a slot format corresponding to the reference subband; wherein determining the slot format corresponding to the reference subband includes And determining, according to the first indication information, a slot format corresponding to the reference subband.
  • the terminal device receives the first indication information, and determines a slot format corresponding to the reference subband according to the first indication information, so that the terminal device can dynamically switch the slot format corresponding to the reference subband, so that the transmission service can be dynamically adjusted.
  • the receiving the first indication information includes: receiving the first indication information in the reference subband.
  • the terminal device receives the first indication information in the reference subband, avoiding detecting the first indication information in all the subbands, and reducing power consumption of the terminal device.
  • the receiving the first indication information comprises: receiving the first indication information in each of a plurality of time slots corresponding to the target sub-band.
  • the terminal device receives the first indication information in each of the plurality of time slots corresponding to the target sub-band, and improves the accuracy of the first indication information received by the terminal device.
  • the receiving the first indication information comprises: receiving the first indication information in a first time slot of the plurality of time slots corresponding to the target sub-band.
  • the first time slot may be any one of the plurality of time slots, or may be the first time slot of the plurality of time slots.
  • the terminal device receives the first indication information in the first time slot, thereby saving power consumption of the terminal device.
  • the first indication information is carried in the downlink control information or in the downlink control channel region.
  • the target subband and the reference subband belong to the same system bandwidth.
  • the target subband and the reference subband belong to different system bandwidths.
  • determining the target subcarriers in the multiple subbands according to the slot format corresponding to the reference subband includes: determining, according to the slot format corresponding to the reference subband, a first symbol corresponding to the reference subband, the first symbol is used as a first guard interval, and the first symbol is in a time domain. Having at least two second symbols corresponding to the target sub-band; determining at least one second symbol of the at least two second symbols as a second guard interval; determining, according to the second guard interval, the target sub-band corresponding The slot format.
  • the two symbols are determined as the second guard interval, so that uplink and downlink transmissions are simultaneously performed in one time slot by the second guard interval, and interference between the reference subband and the target subband can also be avoided.
  • determining the target subcarriers in the multiple subbands according to the slot format corresponding to the reference subband includes: determining, according to the slot format corresponding to the reference subband, the use of all the first symbols included in the time domain by the second symbol, where the first symbol is a symbol corresponding to the reference subband, The second symbol is any one of the symbols corresponding to the target subband, and the first symbol is used for uplink transmission, for downlink transmission, or for use as a guard interval; according to the second symbol, all the numbers included in the time domain
  • the purpose of a symbol is to determine the purpose of the second symbol; and according to the use of the second symbol, determine a slot format corresponding to the target subband.
  • Determining, by the terminal device, the use of all the first symbols included in the time domain according to the slot format corresponding to the reference subband, and determining the second according to the use of all the first symbols included in the time domain by the second symbol The purpose of the symbol is to determine the slot format corresponding to the target subband according to the use of the second symbol, so that the smaller subcarrier can be flexibly configured by using the subband where the smaller subcarrier spacing is located as the reference subband.
  • the slot format of the subband in which the carrier spacing is located is
  • the determining of the use of the second symbol according to the use of all the first symbols included in the time domain by the second symbol comprises: if the use of all the first symbols includes for uplink transmission and For downlink transmission, the purpose of the second symbol is invalid; if the use of all the first symbols includes for uplink transmission and for use as a guard interval, the purpose of the second symbol is for use as a guard interval; The use of the first symbol includes for downlink transmission and for use as a guard interval, the purpose of which is for use as a guard interval.
  • the use of the second symbol is determined based on the use of all of the first symbols contained in the time domain by the second symbol, avoiding interference between the reference subband and the target subband.
  • the terminal device and the network device may pre-set the correspondence between the slot format corresponding to the reference subband and the slot format corresponding to the target subband, so that the terminal device can determine the target subband corresponding to the slot format corresponding to the reference subband.
  • the slot format avoids self-interference and saves system power.
  • the slot format corresponding to the reference subband is all used for uplink transmission in a certain time slot, or all for downlink transmission.
  • the terminal device and the network device may preset that the slot format corresponding to the target sub-band is the same as the slot format corresponding to the reference sub-band, so that self-interference can be avoided.
  • the terminal device and the network device may preset to be used for all uplink transmission or all for downlink transmission. If the time slot format corresponding to the reference subband is all used for downlink transmission in a certain time slot, the terminal device and the network device may preset that the corresponding time slot format of the target subband in the time slot included in the time slot is all It is used for uplink transmission or all for downlink transmission, so that self-interference can be avoided.
  • the method further includes: receiving second indication information, where the second indication information is used to indicate a correspondence between a slot format corresponding to the target subband and a slot format corresponding to the reference subband; The second indication information determines a correspondence between a slot format corresponding to the target subband and a slot format corresponding to the reference subband.
  • the terminal device can learn the correspondence between the slot format corresponding to the target sub-band configured by the network device and the slot format corresponding to the reference sub-band according to the received second indication information, so that the transmission service can be dynamically adjusted.
  • the method before determining the slot format corresponding to the reference subband, further includes: sending, to the network device, capability information, where the capability information is used to indicate a type of the at least one subcarrier spacing supported by the terminal device; Receiving a third indication information, where the third indication information is used to indicate the reference subband, the type of the subcarrier spacing of the reference subband is one of a type of subcarrier spacing supported by the terminal device and the network device; The third indication information determines the reference subband.
  • the reference subband is a type of subcarrier spacing that both the terminal device and the network device can support, thereby ensuring normal transmission of the service.
  • the method further includes: receiving fourth indication information, where the fourth indication information is used to indicate an effective duration of a slot format corresponding to the target subband.
  • the terminal device does not need to detect the first indication information for a long period of time, which saves power consumption of the terminal device.
  • a second aspect provides a method for determining a slot format, the method comprising: determining a slot format corresponding to a reference subband in a plurality of subbands; and transmitting, to the terminal device, first indication information, where the first indication information is used And indicating the slot format corresponding to the reference subband, where the first indication information is further used to indicate that the terminal device determines, according to the slot format corresponding to the reference subband, a slot format corresponding to the target subband in the multiple subbands, where The type of the subcarrier spacing in the target subband is different from the type of the subcarrier spacing in the reference subband.
  • the network device determines the slot format corresponding to the reference subband, and sends the first indication information to the terminal device, so that the terminal device determines the slot format corresponding to the reference subband according to the first indication information, so that the network device can dynamically configure the reference.
  • the sub-band corresponds to the slot format, so that the transmission service can be dynamically adjusted.
  • network devices can transmit different services at the same time, thereby improving transmission efficiency.
  • the sending the first indication information to the terminal device includes: sending the first indication information in the reference sub-band.
  • the network device sends the first indication information to the terminal device in the reference subband to avoid sending the first indication information in all the subbands, which reduces the power consumption of the network device.
  • the sending the first indication information to the terminal device includes: sending the first indication information in each of a plurality of time slots corresponding to each of the plurality of sub-bands.
  • the network device sends the first indication information in each of the multiple time slots corresponding to the target sub-band, so that the terminal device can accurately receive the first indication information, which improves the accuracy of the terminal device receiving the first indication information. degree.
  • the sending the first indication information to the terminal device includes: sending the first indication information in a first time slot of the multiple time slots corresponding to each of the multiple sub-bands.
  • the first time slot may be any one of the plurality of time slots, or may be the first time slot of the plurality of time slots.
  • the network device sends the first indication information in the first time slot, thereby saving power consumption of the network device.
  • the method further includes: sending the second indication information, where the second indication information is used to indicate a correspondence between a slot format corresponding to the target subband and a slot format corresponding to the reference subband.
  • the network device can flexibly configure the correspondence between the slot format corresponding to the target subband and the slot format corresponding to the reference subband, so that the transmission service can be dynamically adjusted.
  • the method further includes: receiving capability information sent by the terminal device, where the capability information is used to indicate a type of subcarrier spacing supported by the terminal device, and sending third indication information to the terminal device, where The third indication information is used to indicate the reference subband, and the type of the subcarrier spacing of the reference subband is one of types of subcarrier spacing supported by the terminal device and the network device.
  • the network device selects the type of subcarrier spacing that both the terminal device and the network device can support, thereby ensuring normal transmission of the service.
  • the method further includes: transmitting fourth indication information, where the fourth indication information is used to indicate an effective duration of a slot format corresponding to the target subband.
  • the network device sends the fourth indication information to the terminal device, so that the terminal device does not need to detect the first indication information for a long period of time, which saves power consumption of the terminal device.
  • a terminal device comprising means for performing the method of the first aspect or any of the possible implementations of the first aspect.
  • a network device comprising means for performing the method of any of the possible implementations of the second aspect or the second aspect.
  • a system comprising:
  • the terminal device of the above third aspect and the network device of the above fourth aspect are identical to the terminal device of the above third aspect and the network device of the above fourth aspect.
  • a terminal device including a processor, a memory, and a communication interface.
  • the processor is coupled to the memory and communication interface.
  • the memory is for storing instructions for the processor to execute, and the communication interface is for communicating with other network elements under the control of the processor.
  • the processor executes the instructions stored by the memory, the execution causes the processor to perform the method of the first aspect or any of the possible implementations of the first aspect.
  • a network device including: a processor, a memory, and a communication interface.
  • the processor is coupled to the memory and communication interface.
  • the memory is for storing instructions for the processor to execute, and the communication interface is for communicating with other network elements under the control of the processor.
  • the processor executes the instructions stored by the memory, the execution causes the processor to perform the method of any of the possible implementations of the second aspect or the second aspect.
  • a computer storage medium storing program code for indicating an instruction to perform the method of the first aspect or any of the possible implementations of the first aspect .
  • a ninth aspect a computer storage medium storing program code for indicating an instruction to execute the method of any of the above-mentioned second aspect or any of the possible implementations of the second aspect is stored in the computer storage medium .
  • the terminal device determines a slot format corresponding to the reference subband, and determines a slot format corresponding to the target subband according to the slot format corresponding to the reference subband, and a type and a reference subband of the subcarrier spacing in the target subband.
  • the types of neutron carrier spacing are different, so that the terminal device can transmit different services at the same time, thereby improving transmission efficiency.
  • FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present application
  • 2 is a schematic diagram of correspondence between different subcarrier spacings and OFDM symbols
  • FIG. 3 is a schematic diagram of a slot format
  • FIG. 4 is a schematic flowchart of a method for determining a slot format according to an embodiment of the present application
  • FIG. 5 is a schematic diagram of a method for determining a slot format according to an embodiment of the present application.
  • FIG. 6 is a schematic diagram of a method for determining a slot format according to another embodiment of the present application.
  • FIG. 7 is a schematic block diagram of a terminal device according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • FIG. 9 is a schematic block diagram of a network device according to an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a network device according to an embodiment of the present application.
  • FIG. 11 is a schematic block diagram of a system in accordance with an embodiment of the present application.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access
  • the technical solutions of the embodiments of the present application can be applied to various communication systems based on non-orthogonal multiple access technologies, such as a sparse code multiple access (SCMA) system, and a low-density signature (Low). Density Signature (LDS) system, etc., of course, the SCMA system and the LDS system may also be referred to as other names in the communication field; further, the technical solution of the embodiment of the present application can be applied to multi-carrier using non-orthogonal multiple access technology.
  • SCMA sparse code multiple access
  • LDS Density Signature
  • Orthogonal Frequency Division Multiplexing OFDM
  • Filter Bank Multi-Carrier FBMC
  • General Frequency Division Multiplexing Generalized Frequency Division Multiplexing (OFDM)) Frequency Division Multiplexing (GFDM)
  • Filtered Orthogonal Frequency Division Multiplexing Filtered-OFDM, F-OFDM
  • the terminal device in the embodiment of the present application may refer to a user equipment (User Equipment, UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, and a wireless device.
  • Communication device user agent or user device.
  • the access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), with wireless communication.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • the network device in the embodiment of the present application may be a device for communicating with a terminal device, where the network device may be a Base Transceiver Station (BTS) in GSM or CDMA, or may be a base station (NodeB, NB) in a WCDMA system. And may be an evolved base station (eNB or eNodeB) in the LTE system, or may be a wireless controller in a cloud radio access network (CRAN) scenario, or the network device may be The embodiments of the present application are not limited to the relay station, the access point, the in-vehicle device, the wearable device, and the network device in the future 5G network or the network device in the future evolved PLMN network.
  • BTS Base Transceiver Station
  • NodeB NodeB
  • NB base station
  • CRAN cloud radio access network
  • the embodiments of the present application are not limited to the relay station, the access point, the in-vehicle device, the wearable device, and the network device in the future 5G network or
  • FIG. 1 is a schematic diagram of an application scenario of the present application.
  • the communication system in FIG. 1 may include at least one terminal device 10 and a network device 20.
  • the network device 20 is configured to provide communication services for each terminal device 10 and access the core network.
  • the network device 20 can be used to send configuration information, a downlink control channel, and a data channel to each terminal device 10, and receive each terminal.
  • Each terminal device 10 accesses the network by searching for a synchronization signal, a broadcast signal, or the like transmitted by the network device 20, thereby performing communication with the network.
  • each terminal device 10 receives configuration information, downlink control information, and downlink control information transmitted by the network device 20.
  • the data channel, and the uplink data channel and the uplink control channel are transmitted to the network device 20.
  • the arrows shown in FIG. 1 may represent uplink/downlink transmissions by a cellular link between the terminal device 10 and the network device 20.
  • the subcarrier spacing is inversely proportional to the length of the OFDM symbol, ie, the larger the subcarrier spacing, the shorter the OFDM symbol length.
  • FIG. 2 shows a schematic diagram of the correspondence between different subcarrier spacings and OFDM symbols. As shown in FIG. 2, the subcarrier spacing is a correspondence between 15 kHz and 60 kHz and OFDM symbols, respectively. Within the system bandwidth of a serving cell, different subcarrier spacing frequency division multiplexing can be set to meet the needs of different services.
  • the Evolved Mobile Broadband (eMBB) service operates in a frequency range of 15 kHz subcarrier spacing
  • the Ultra Reliability Low Latency Communication (URLLC) service operates at a frequency of 30 kHz or 60 kHz.
  • the device capability of the UE determines the type of subcarrier spacing that the UE can support. For example, a certain type of UE can have both eMBB service and URLCC service.
  • the UE can work in the frequency range of the subcarrier spacing type of 15 kHz, and can work. In the frequency range of the subcarrier spacing type of 30 kHz or 60 kHz.
  • the OFDM system uses Fast Fourier Transformation (FFT) to transform an OFDM symbol in a time domain to a corresponding subcarrier in the frequency domain, and inverse transform of the subcarrier in the frequency domain by FFT. That is, the Inverse Fast Fourier Transformation (IFFT) is changed into an OFDM symbol in the time domain.
  • FFT Fast Fourier Transformation
  • IFFT Inverse Fast Fourier Transformation
  • the subcarrier spacing is inversely proportional to the length of the OFDM symbol, that is, the time length of the corresponding one OFDM symbol when the type of the subcarrier spacing is 15 kHz is one OFDM symbol corresponding to the type of the subcarrier spacing of 60 kHz. 4 times the length of time.
  • the data is transmitted based on a Transmission Time Interval (TTI), that is, one data transmission, and the length of time is 1 TTI.
  • TTI Transmission Time Interval
  • one TTI may be one subframe 1 ms, or one slot.
  • the slot can be a relative unit, that is, only the number of OFDM symbols included in the slot is defined. For example, as shown in FIG. 2, one slot contains 7 OFDM symbols.
  • the absolute time length of one slot is 0.5 ms
  • the absolute of one slot is 0.125ms.
  • the serving cell supports dynamic service changes, and the serving cell can dynamically change the format of the time slot.
  • 3 is a schematic diagram of a slot format. As shown in FIG. 3, a slot slot containing 7 OFDM symbols is taken as an example. 7 OFDM symbols in a slot can be used in the downlink, or both can be used in the uplink, and the partial symbols can be used as the downlink, or part of the symbols. For the upside.
  • the change of the slot format can be determined according to the service change of the serving cell, for example, each slot is different.
  • the terminal device receives the indication information sent by the base station at the start time of the time slot corresponding to the certain sub-band, and determines the slot format of the corresponding time slot according to the indication information to transmit the corresponding service. That is to say, in the conventional solution, the terminal device only supports the same seed carrier interval type in a certain time domain resource, that is, corresponds to one slot format, and only one type of service can be transmitted.
  • current terminal devices and base stations are capable of supporting types having different subcarrier spacings in different frequency ranges, and therefore a method of determining a slot format in such a scenario is urgently needed.
  • FIG. 4 is a schematic flowchart of a method for determining a slot format in an embodiment of the present application.
  • the terminal device receives the first indication information sent by the network device, and correspondingly, the network device sends the first indication information to the terminal device.
  • the first indication information is used to indicate a slot format corresponding to the reference subband in the multiple subbands.
  • the terminal device may further report the capability information to the network device, where the capability information is used to indicate a type of the subcarrier spacing supported by the terminal device.
  • the network device determines, according to the received capability information, the type of the subcarrier spacing supported by the network device and the terminal device in combination with the type of the subcarrier spacing supported by the network device, and sends the third indication information to the network device to notify the terminal device network device.
  • the type of subcarrier spacing for the selected reference is a configurable communication protocol, or a type of the subcarrier spacing supported by the terminal device.
  • the network device selects the type of subcarrier spacing that both the terminal device and the network device can support. If there are multiple types of subcarrier spacings that can be supported by both the terminal device and the network device, the network device can arbitrarily select one of the subcarrier spacing types as the reference subcarrier spacing type, or set different subband priorities in advance. Select the type of subcarrier spacing of the reference, and so on. This application does not limit this.
  • the type of different subcarrier spacing may be different in frequency domain spacing between adjacent subcarriers in a certain subband.
  • the third indication information may further indicate, in which frequency ranges, the types of subcarrier spacings that support the reference, so that the terminal device can quickly find the subband in which the type of the reference subcarrier spacing is located, that is, the reference subband, which is improved. System efficiency.
  • subcarrier spacings supported in the frequency range may also be preset, which is not limited in this application.
  • the third indication information may be specific to a serving cell in the network device, for example, carried in a Physical Broadcast Control Channel (PBCH) or a System Information Block (SIB).
  • PBCH Physical Broadcast Control Channel
  • SIB System Information Block
  • the third indication information may be terminal device specific, or terminal device group specific, for example, carried in Radio Resource Control (RRC) signaling.
  • RRC Radio Resource Control
  • the network device may support multiple serving cells at the same time, and the corresponding third indication information may be sent for each serving cell, or a third indication information may indicate multiple serving cells, which is not limited in this application.
  • the network device may not send the third indication information to the terminal device, where the terminal device may preset a type of subcarrier spacing that is commonly supported by the network device.
  • the terminal device reports the capability information to the network device, where the capability information may “explicitly” indicate the type of the subcarrier spacing supported by the terminal device.
  • the capability information includes a type of the subcarrier spacing supported by the terminal device.
  • the capability information may also be an "implicit" type indicating the subcarrier spacing supported by the terminal device.
  • the reporting capability information may include a service type supported by the terminal device.
  • the network device can learn the type of subcarrier spacing supported by the terminal device according to the service type supported by the terminal device, because different service types correspond to different types of subcarrier spacing.
  • the eMMB service corresponds to a type of 15 kHz subcarrier spacing
  • the URLLC service corresponds to a type of 30 kHz or 60 kHz subcarrier spacing.
  • the system can also set the type of subcarrier spacing that all terminal devices support by default, for example, 15 kHz, so that the terminal device can also report the type of subcarrier spacing of this type, and only report the additional support of the terminal device.
  • the type of carrier spacing can also set the type of subcarrier spacing that all terminal devices support by default, for example, 15 kHz, so that the terminal device can also report the type of subcarrier spacing of this type, and only report the additional support of the terminal device.
  • the type of carrier spacing can also set the type of subcarrier spacing that all terminal devices support by default, for example, 15 kHz.
  • the terminal device may determine the reference subframe by using a type of the subcarrier spacing supported by the preset network device and a type of the subcarrier spacing supported by the terminal device. band.
  • the terminal device may receive the first indication information in the reference subband. That is, the network device sends the first indication information in the reference subband. That is, regardless of which subband (which may be referred to as a "target subband") the terminal device is prepared to receive data, the first indication information needs to be received on the reference subband.
  • the network device sends the first indication information in the reference subband. That is, regardless of which subband (which may be referred to as a "target subband") the terminal device is prepared to receive data, the first indication information needs to be received on the reference subband.
  • the network device may send the first indication information in each of a plurality of time slots corresponding to the reference subband, or may send the first indication in any one of a plurality of time slots corresponding to the reference subband.
  • An indication message Or the terminal device receives the first indication information in a certain time slot of the reference subband by preset with the network device.
  • the network device sends the first indication information in each of a plurality of time slots corresponding to each of the plurality of subbands.
  • the terminal device can also receive the first indication information in each of the plurality of time slots corresponding to the target sub-band, thereby improving the accuracy of the first indication information received by the terminal device.
  • the terminal device may further receive the first indication information in a first time slot of the multiple time slots corresponding to the target sub-band, thereby saving system power consumption.
  • the first time slot may be any one of the multiple time slots, or may be the first time slot of the multiple time slots, which is not limited in this application.
  • the first indication information may be carried in the downlink control information or in the downlink control channel region, which is not limited in this application.
  • the network device may send the fifth indication information to the terminal device, where the fifth indication information is used to indicate whether the serving cell where the terminal device is located supports dynamically changing the slot format.
  • the terminal device determines, according to the fifth indication information, whether the first indication information needs to be monitored. When determining that the serving cell where the terminal device is located supports dynamically changing the slot format, the terminal device monitors and receives the first indication information.
  • the terminal device determines, according to the first indication information, a slot format corresponding to the reference subband.
  • the slot format corresponding to the reference subband may be any of the slot formats in FIG.
  • the terminal device may preset the slot format corresponding to the reference subband with the network device, so that the terminal device does not need to perform step 401, that is, the terminal device may directly determine the slot format corresponding to the reference subband.
  • the terminal device determines, according to the slot format corresponding to the reference subband, a slot format corresponding to the target subband in the multiple subbands, where the type of the subcarrier spacing in the target subband is spaced from the subcarrier in the reference subband. Different types.
  • the terminal device can determine the slot format corresponding to the target subband according to the slot format corresponding to the reference subband, so that the terminal device can simultaneously transmit different services. Thereby improving the transmission efficiency.
  • the terminal device can transmit different services at the same time, and can also avoid resource waste and improve resource utilization.
  • each sub-band includes multiple sub-carriers, and the interval type of the sub-carriers is the interval of sub-carriers in a certain sub-band.
  • the sub-carriers supported in the 5G NR standard specification may have an interval of 15 kHz, 30 kHz, 60 kHz, and 120 kHz. 240 kHz, 480 kHz, etc., which is not limited in this application.
  • the target subband and the reference subband may belong to the same system bandwidth, or may belong to different system bandwidths, which is not limited in the present application.
  • the target subband and the reference subband may be one of a plurality of subbands included in the first system bandwidth, and the reference subband may be the second system bandwidth.
  • One of the plurality of subbands; or the target subband is a complete system bandwidth (eg, the first system bandwidth), and the reference subband is another complete system bandwidth (eg, the second system bandwidth), the present application This is not limited.
  • the terminal device and the network device may preset the correspondence between the slot format corresponding to the reference subband and the slot format corresponding to the target subband, so that the terminal device can determine the slot format corresponding to the reference subband.
  • the target sub-band corresponds to the slot format to avoid self-interference and save system power consumption.
  • the terminal device and the network device may preset that the slot format corresponding to the target subband is the same as the slot format corresponding to the reference subband.
  • the terminal device and the network device may be preset.
  • the corresponding time slot format of the target subband in the time slot included in the time slot is all used for uplink transmission or all for downlink transmission. If the time slot format corresponding to the reference subband is all used for downlink transmission in a certain time slot, the terminal device and the network device may preset that the corresponding time slot format of the target subband in the time slot included in the time slot is all Used for uplink transmission or all for downlink transmission.
  • the network device can flexibly configure the correspondence between the slot format corresponding to the target subband and the slot format corresponding to the reference subband, and notify the terminal device by using the second indication information, so that the terminal device receives the second indication.
  • the information can determine the corresponding relationship.
  • the slot format corresponding to the target subband can be determined, thereby improving the flexibility of the slot format corresponding to the target subband of the network device configuration. Sex.
  • the terminal device determines, according to the slot format corresponding to the reference subband, the slot format corresponding to the target subband. Determining, by the terminal device, the first symbol used as the first guard interval according to the slot format corresponding to the reference subband, where the first symbol includes at least two second symbols corresponding to the target subband in the time domain, and then At least one of the at least two symbols is determined as a second guard interval, and the slot format corresponding to the target sub-band is determined according to the second guard interval.
  • the slot format corresponding to the target subband is in the second protection.
  • the symbol usage before the interval is the same as the reference sub-band using the symbol before the first guard interval. If the reference subband and the target subband belong to different system bandwidths, and the slot format corresponding to the reference subband is used for the uplink or the majority for the downlink, the slot format corresponding to the target subband is before the second guard interval.
  • the symbol usage and the reference sub-band may or may not be the same as the symbol usage before the first guard interval.
  • the first symbol includes at least two second symbols corresponding to the target sub-band in the time domain, which may be understood as the maximum number of second symbols that the first symbol can include in the time domain, and the first symbol is The time domain is greater than or equal to the at least two second symbols.
  • a sub-band with a minimum subcarrier spacing of 15 kHz is used as a reference sub-band
  • a sub-band with a sub-carrier spacing of 30 kHz is used as a target sub-band
  • the slot format corresponding to the reference sub-band is The symbols before the first guard interval are used for downlink transmission, and the symbols after the first guard interval are used for uplink transmission, and the reference subband belongs to the same system bandwidth as the target subband.
  • the terminal device determines the first symbol according to the slot format corresponding to the reference subband, that is, the special region “G” in FIG. 5, where the first symbol includes two second symbols in the time domain, and the two second symbols may be used.
  • the first second symbol in the second guard interval, or the second second symbol in the two second symbols as the second guard interval, or both of the symbols are used as the second guard interval,
  • the symbols before the second guard interval are all downlink transmissions, and the symbols after the second guard interval are all uplink transmissions.
  • FIG. 5 also shows an embodiment in which a sub-band with a minimum subcarrier spacing of 15 kHz is used as a reference sub-band, and a sub-band spacing of 60 kHz, 120 kHz, or 240 kHz is used as a target sub-band.
  • the reference sub-band may also be a sub-band with a sub-carrier spacing of 30 kHz as shown in FIG. 5, or a sub-carrier spacing of 60 kHz, 120 kHz, or 240 kHz, etc., which is not limited in this application.
  • guard interval is used for the conversion of the radio channel of the terminal device.
  • the terminal device determines, according to the slot format corresponding to the reference subband, the target subband.
  • the slot format may first determine, according to the slot format corresponding to the reference subband, the use of all the first symbols included in the time domain, the first symbol is a symbol corresponding to the reference subband, and according to the second The use of all the first symbols contained in the symbol in the time domain determines the purpose of the second symbol, and in turn determines the slot format corresponding to the target subband based on the purpose of the second symbol.
  • the first symbol is used for uplink transmission, for downlink transmission, or for use as a guard interval, and the second symbol is any one of time slots corresponding to the target sub-band.
  • the use of the second symbol is invalid. If the use of all of the first symbols contained in the time domain in the time domain is for uplink transmission and for use as a guard interval, the use of the second symbol is for use as a guard interval. If the use of all the first symbols contained in the second symbol in the time domain is for downlink transmission and for use as a guard interval, the use of the second symbol is for use as a guard interval. If the use of all the first symbols included in the second symbol in the time domain is for uplink transmission, the purpose of the second symbol is for uplink transmission. If the use of all the first symbols contained in the second symbol in the time domain is for downlink transmission, the purpose of the second symbol is for downlink transmission.
  • FIG. 6 is taken as an example.
  • a sub-band with a maximum sub-carrier spacing of 120 kHz is used as a reference sub-band, and a sub-band with a sub-carrier spacing of 30 kHz is used as a target sub-band.
  • the first second symbol includes four first symbols in the time domain, the purpose of which is for downlink transmission, and the purpose of the first second symbol is for downlink transmission.
  • the use of the four first symbols included in the second second symbol is for use as a guard interval and for uplink transmission, respectively, and the second second symbol is used as a guard interval.
  • the fourth second symbol included in the time domain has two uses for the uplink transmission and two for the downlink transmission, and the fourth second symbol is the invalid symbol.
  • FIG. 6 also shows an embodiment in which a sub-band with a maximum sub-carrier spacing of 120 kHz is used as a reference sub-band, and a sub-band with a sub-carrier spacing of 15 kHz, 30 kHz, 60 kHz, or 240 kHz is used as a target sub-band.
  • the reference subband may also be a subband with a subcarrier spacing of 30 kHz as shown in FIG. 6, or a subcarrier spacing of 60 kHz, or 240 kHz, etc., which is not limited in this application.
  • the network device may further send fourth indication information to the terminal device, where the fourth indication information is used to indicate an effective duration of the slot format corresponding to the target subband.
  • the terminal device receives the fourth indication information, so that the terminal device does not need to detect the first indication information continuously within the effective duration, thereby saving power consumption of the terminal device.
  • the fourth indication information may also be carried in the downlink control information, and the fourth indication information may “explicitly” indicate the effective duration of the slot format corresponding to the target subband, and may also “implicitly” indicate the target subframe.
  • the effective duration with the corresponding slot format may indicate that the effective duration may be the same as the slot length corresponding to the reference subband, or twice the length of the slot corresponding to the reference subband, or 4 of the slot length corresponding to the reference subband. Times, or infinity, that is, the slot format does not change.
  • the fourth indication information may also be an effective duration indicating a slot format corresponding to the reference subband.
  • the slot format corresponding to the reference subband is unchanged, the slot format corresponding to the target subband does not change.
  • the slot format corresponding to the subband changes, and the target subband re-determines the slot format corresponding to the target subband according to the slot format corresponding to the reference subband, that is, “implicitly” indicates that the slot format corresponding to the target subband is valid. duration.
  • the terminal device determines a slot format corresponding to a reference subband in the multiple subbands, and determines a target in the multiple subbands according to the slot format corresponding to the reference subband.
  • the slot format corresponding to the subband, the type of the subcarrier spacing in the target subband is different from the type of the subcarrier spacing in the reference subband, so that the terminal device can simultaneously transmit different services, thereby improving transmission efficiency.
  • the size of the sequence numbers of the foregoing processes does not mean the order of execution sequence, and the order of execution of each process should be determined by its function and internal logic, and should not be applied to the embodiment of the present application.
  • the implementation process constitutes any limitation.
  • FIG. 7 is a schematic block diagram of a terminal device 700 according to an embodiment of the present application. As shown in FIG. 7, the terminal device 700 includes:
  • the processing module 710 is configured to determine a slot format corresponding to the reference subband in the multiple subbands
  • the processing module 710 is further configured to determine, according to a slot format corresponding to the reference subband, a slot format corresponding to a target subband in the multiple subbands, a type of the subcarrier spacing in the target subband, and the reference subband The type of neutron carrier spacing is different.
  • the terminal device 700 further includes: a receiving module 720, configured to receive first indication information, where the first indication information is used to indicate a slot format corresponding to the reference subband; the processing module 710 is specifically configured to: The first indication information determines a slot format corresponding to the reference subband.
  • the receiving module 720 is specifically configured to: receive the first indication information in the reference subband.
  • the receiving module 720 is specifically configured to: receive the first indication information in each of a plurality of time slots corresponding to the target sub-band.
  • the receiving module 720 is specifically configured to: receive the first indication information in a first time slot of the multiple time slots corresponding to the target sub-band.
  • the processing module 710 is specifically configured to: determine, according to the slot format corresponding to the reference subband, the reference subband corresponding a first symbol, the first symbol is used as a first guard interval, and the first symbol includes at least two second symbols corresponding to the target sub-band in a time domain; The at least one second symbol is determined as a second guard interval; and according to the second guard interval, a slot format corresponding to the target sub-band is determined.
  • the processing module 710 is specifically configured to: determine, according to the slot format corresponding to the reference subband, that the second symbol is in time The use of all the first symbols included in the domain, the first symbol is a symbol corresponding to the reference subband, and the second symbol is any symbol corresponding to the target subband, and the first symbol is used for uplink transmission. For downlink transmission or for use as a guard interval; determining the use of the second symbol according to the use of all the first symbols included in the time domain by the second symbol; determining the target according to the use of the second symbol With the corresponding slot format.
  • the processing module 710 is specifically configured to: if the use of the all the first symbols is used for uplink transmission and for downlink transmission, the use of the second symbol is invalid; if the use of the first symbol includes For uplink transmission and for use as a guard interval, the second symbol is used for protection intervals; if the purpose of all the first symbols is for downlink transmission and for use as a guard interval, the second symbol is used for Used as a guard interval.
  • the processing module 710 is specifically configured to: determine, according to a correspondence between a slot format corresponding to the target subband and a slot format corresponding to the reference subband, and a slot format corresponding to the reference subband. With the corresponding slot format.
  • the receiving module 720 is further configured to receive the second indication information, where the second indication information is used to indicate a correspondence between a slot format corresponding to the target subband and a slot format corresponding to the reference subband;
  • the processing module 710 is further configured to determine, according to the second indication information, a correspondence between a slot format corresponding to the target subband and a slot format corresponding to the reference subband.
  • the terminal device 700 further includes: a sending module, configured to send the capability information to the network device, where the capability information is used to indicate a type of the subcarrier spacing supported by the terminal device; the receiving module 720 is further configured to receive the third Instructing information, the third indication information is used to indicate the reference subband, and the type of the subcarrier spacing of the reference subband is one of types of subcarrier spacing supported by the terminal device and the network device; The module 710 is further configured to determine the reference subband according to the third indication information.
  • a sending module configured to send the capability information to the network device, where the capability information is used to indicate a type of the subcarrier spacing supported by the terminal device
  • the receiving module 720 is further configured to receive the third Instructing information, the third indication information is used to indicate the reference subband, and the type of the subcarrier spacing of the reference subband is one of types of subcarrier spacing supported by the terminal device and the network device
  • the module 710 is further configured to determine the reference subband according to the third indication information.
  • the receiving module 720 is further configured to receive fourth indication information, where the fourth indication information is used to indicate an effective duration of a slot format corresponding to the target subband.
  • the terminal device in the embodiment of the present application determines the slot format corresponding to the reference subband in the plurality of subbands, and determines the target subband in the plurality of subbands according to the slot format corresponding to the reference subband.
  • the type of the subcarrier spacing in the target subband is different from the type of the subcarrier spacing in the reference subband, so that the terminal device can simultaneously transmit different services, thereby improving transmission efficiency.
  • the terminal device 700 may correspond to the terminal device in the method 400 of determining the slot format of the embodiment of the present application, and the foregoing and other management operations of the respective modules in the terminal device 700 and/or The functions are respectively implemented in order to implement the corresponding steps of the foregoing various methods, and are not described herein for brevity.
  • the receiving module 720 in the embodiment of the present application may be implemented by a transceiver, and the processing module 710 may be implemented by a processor.
  • the terminal device 800 can include a transceiver 810, a processor 820, and a memory 830.
  • the memory 830 can be used to store indication information, and can also be used to store code, instructions, and the like executed by the processor 820.
  • FIG. 9 is a schematic block diagram of a network device 900 according to an embodiment of the present application. As shown in FIG. 9, the network device 900 includes:
  • the processing module 910 is configured to determine a slot format corresponding to the reference subband in the multiple subbands
  • the sending module 920 is configured to send the first indication information to the terminal device, where the first indication information is used to indicate a slot format corresponding to the reference subband, where the first indication information is further used to indicate that the terminal device is configured according to the reference subband
  • the corresponding slot format determines a slot format corresponding to the target subband in the plurality of subbands, wherein a type of the subcarrier spacing in the target subband is different from a type of the subcarrier spacing in the reference subband.
  • the sending module 920 is specifically configured to: send the first indication information in the reference subband.
  • the sending module 920 is specifically configured to: send the first indication information in each of a plurality of time slots corresponding to each of the plurality of subbands.
  • the sending module 920 is specifically configured to: send the first indication information in a first time slot of the multiple time slots corresponding to each of the multiple sub-bands.
  • the sending module 920 is specifically configured to: send the second indication information, where the second indication information is used to indicate a correspondence between a slot format corresponding to the target subband and a slot format corresponding to the reference subband.
  • the network device 900 further includes: a receiving module, configured to receive capability information sent by the terminal device, where the capability information is used to indicate a type of subcarrier spacing supported by the terminal device; the sending module 920 is further configured to: Transmitting, to the terminal device, third indication information, where the third indication information is used to indicate the reference subband, where a type of subcarrier spacing of the reference subband is in a type of subcarrier spacing supported by the terminal device and the network device One.
  • a receiving module configured to receive capability information sent by the terminal device, where the capability information is used to indicate a type of subcarrier spacing supported by the terminal device
  • the sending module 920 is further configured to: Transmitting, to the terminal device, third indication information, where the third indication information is used to indicate the reference subband, where a type of subcarrier spacing of the reference subband is in a type of subcarrier spacing supported by the terminal device and the network device One.
  • the sending module 920 is further configured to send fourth indication information, where the fourth indication information is used to indicate a valid duration of a slot format corresponding to the target subband.
  • the network device in the embodiment of the present application determines the slot format corresponding to the reference subband, and sends the first indication information to the terminal device, so that the terminal device determines the slot format corresponding to the reference subband according to the first indication information. So that the network device can transmit different services at the same time, thereby improving the transmission efficiency.
  • the network device can dynamically configure the slot format corresponding to the reference subband, so that the transmission service can be dynamically adjusted.
  • the network device 900 may correspond to the network device in the method 400 of determining the slot format of the embodiment of the present application, and the above and other management operations and/or other management operations of the respective modules in the network device 900.
  • the functions are respectively implemented in order to implement the corresponding steps of the foregoing various methods, and are not described herein for brevity.
  • the sending module 920 in the embodiment of the present application may be implemented by a transceiver, and the processing module 910 may be implemented by a processor.
  • network device 1000 can include a transceiver 1010, a processor 1020, and a memory 1030.
  • the memory 1030 can be used to store indication information, and can also be used to store code, instructions, and the like executed by the processor 1020.
  • processor 820 or processor 1020 may be an integrated circuit chip with signal processing capabilities.
  • each step of the foregoing method embodiment may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software.
  • the processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA), or the like. Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or carried out.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method.
  • the memory 830 or the memory 1030 in the embodiments of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read only memory (PROM), an erasable programmable read only memory (Erasable PROM, EPROM), or an electric Erase programmable read only memory (EEPROM) or flash memory.
  • the volatile memory can be a Random Access Memory (RAM) that acts as an external cache.
  • RAM Random Access Memory
  • many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM).
  • SDRAM Double Data Rate SDRAM
  • DDR SDRAM Double Data Rate SDRAM
  • ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • SLDRAM Synchronous Connection Dynamic Random Access Memory
  • DR RAM direct memory bus random access memory
  • the system 1100 includes:
  • the embodiment of the present application further provides a computer storage medium, which can store program instructions for indicating any of the above methods.
  • the storage medium may be specifically a storage 830 or 1030.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present application which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

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Abstract

La présente invention concerne un procédé de détermination d'une cellule, un dispositif terminal et un dispositif de réseau. Le procédé consiste à : déterminer un format de tranche de temps correspondant à une sous-bande de référence d'une pluralité de sous-bandes ; selon le format de tranche de temps correspondant à ladite sous-bande de référence, déterminer un format de tranche de temps correspondant à une sous-bande cible de ladite pluralité de sous-bandes, le type de l'espacement des sous-porteuses dans ladite sous-bande cible étant différent du type de l'espacement des sous-porteuses dans la sous-bande de référence. Le dispositif terminal des modes de réalisation de la présente invention est apte à transmettre simultanément différents services, ce qui améliore l'efficacité de transmission.
PCT/CN2018/085120 2017-05-02 2018-04-28 Procédé de détermination de cellule, dispositif terminal et dispositif de réseau Ceased WO2018202012A1 (fr)

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