WO2021088875A1 - Procédé et dispositif de transmission pour gc-pdcch - Google Patents

Procédé et dispositif de transmission pour gc-pdcch Download PDF

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Publication number
WO2021088875A1
WO2021088875A1 PCT/CN2020/126510 CN2020126510W WO2021088875A1 WO 2021088875 A1 WO2021088875 A1 WO 2021088875A1 CN 2020126510 W CN2020126510 W CN 2020126510W WO 2021088875 A1 WO2021088875 A1 WO 2021088875A1
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Prior art keywords
cot
pdcch
slot format
time slot
terminal device
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PCT/CN2020/126510
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English (en)
Chinese (zh)
Inventor
李�根
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维沃移动通信有限公司
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Publication of WO2021088875A1 publication Critical patent/WO2021088875A1/fr

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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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the embodiments of the application relate to the field of communications, and in particular to a transmission method and device for a Group Common (GC) Physical Downlink Control Channel (PDCCH) (GC-PDCCH for short).
  • GC Group Common
  • PDCCH Physical Downlink Control Channel
  • GC-PDCCH is a new control channel introduced in the New Radio (NR) communication system.
  • GC-PDCCH is mainly used by network equipment to indicate downlink control information to a group of terminal equipment, such as slot format information (Slot Format Information). , SFI), SFI is used to indicate the time slot format of the current time slot and/or one or more subsequent time slots.
  • SFI Slot Format Information
  • a network device when a network device acquires a channel, it can continue to transmit for a certain period of time, that is, Channel Occupancy Time (COT), and can share the COT to the terminal device it is connected to for transmission.
  • COT Channel Occupancy Time
  • the terminal device can reduce some unnecessary operations (such as PDCCH monitoring) to save power consumption.
  • a solution is provided in the related art, which uses the number of slots indicated by the SFI in the GC-PDCCH to indicate the COT length.
  • the purpose of the embodiments of the present application is to provide a GC-PDCCH transmission method and device to solve the problem that COT cannot be effectively indicated in related technologies.
  • a GC-PDCCH transmission method is provided, the method is executed by a terminal device, and the method includes:
  • GC-PDCCH Receiving a GC-PDCCH, where the GC-PDCCH includes SFI information, and the SFI information is used to indicate a time slot format combination of one or more time slots;
  • the end position of the COT is determined.
  • a GC-PDCCH transmission method is provided, the method is executed by a network device, and the method includes:
  • the SFI information is used to indicate the time slot format combination of one or more time slots; the time slot format combination is used to indicate the end position of the COT.
  • a terminal device in a third aspect, includes:
  • a receiving module configured to receive a GC-PDCCH, where the GC-PDCCH includes SFI information, and the SFI information is used to indicate a time slot format combination of one or more time slots;
  • the determining module is used to determine the end position of the COT according to the time slot format combination indicated by the SFI information.
  • a network device in a fourth aspect, includes:
  • a sending module configured to send GC-PDCCH, where the GC-PDCCH includes SFI information
  • the SFI information is used to indicate the time slot format combination of one or more time slots; the time slot format combination is used to indicate the end position of the COT.
  • a terminal device in a fifth aspect, includes a processor, a memory, and a computer program that is stored on the memory and can run on the processor.
  • the computer program When the computer program is executed by the processor, Implement the steps of the GC-PDCCH transmission method as described in the first aspect.
  • a network device in a sixth aspect, includes a processor, a memory, and a computer program that is stored on the memory and can run on the processor.
  • the computer program is executed by the processor, The steps of the GC-PDCCH transmission method as described in the second aspect are realized.
  • a computer-readable storage medium is provided, and a computer program is stored on the computer-readable storage medium.
  • the computer program is executed by a processor, the GC-PDCCH described in the first and second aspects is implemented. The steps of the transmission method.
  • the GC-PDCCH received by the terminal equipment includes SFI information, which is used to indicate the time slot format combination of one or more time slots, and the terminal equipment can determine the end of COT according to the above time slot format combination position.
  • SFI information which is used to indicate the time slot format combination of one or more time slots
  • the embodiment of the present application implicitly indicates the end position of the COT through the time slot format combination indicated by the SFI, which can realize the effective indication of the COT.
  • Subsequent terminal devices can also share the COT to improve the utilization efficiency of unlicensed spectrum; at the same time, terminal devices can reduce some unnecessary operations (such as PDCCH monitoring) to save power consumption.
  • Fig. 1 is a schematic flowchart of a GC-PDCCH transmission method according to an embodiment of the present application
  • FIG. 2 is a schematic diagram of the COT end position in the GC-PDCCH transmission method according to an embodiment of the present application
  • FIG. 3 is a schematic diagram of a COT position initiated by a terminal device in a GC-PDCCH transmission method according to an embodiment of the present application;
  • Fig. 4 is a schematic flowchart of a GC-PDCCH transmission method according to another embodiment of the present application.
  • Fig. 5 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • Fig. 6 is a schematic structural diagram of a network device according to an embodiment of the present application.
  • Fig. 7 is a schematic structural diagram of a terminal device according to another embodiment of the present application.
  • Fig. 8 is a schematic structural diagram of a network device according to another embodiment of the present application.
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access
  • terminal equipment may include, but is not limited to, a mobile station (Mobile Station, MS), a mobile terminal (Mobile Terminal), a mobile phone (Mobile Telephone), a user equipment (User Equipment, UE), and a mobile phone (handset).
  • the terminal equipment can communicate with one or more core networks through a radio access network (Radio Access Network, RAN), for example, the terminal equipment can be a mobile phone (or It is called a "cellular" phone), a computer with wireless communication function, etc.
  • the terminal device can also be a portable, pocket-sized, handheld, built-in computer or vehicle-mounted mobile device.
  • the network device is a device deployed in a wireless access network to provide wireless communication functions for terminal devices.
  • the network device may be a base station, and the base station may include various forms of macro base stations, micro base stations, relay stations, and access points.
  • the names of devices with base station functions may be different.
  • an LTE network it is called an evolved NodeB (evolved NodeB, eNB, or eNodeB)
  • eNB evolved NodeB
  • 3G Third Generation
  • Node B Node B
  • Network equipment, etc. the terms used do not constitute a restriction.
  • an embodiment of the present application provides a GC-PDCCH transmission method 100.
  • the method can be executed by a terminal device.
  • the method can be executed by software or hardware installed on the terminal device. Including the following steps:
  • S102 Receive a GC-PDCCH, where the GC-PDCCH includes SFI information, and the SFI information is used to indicate a time slot format combination of one or more time slots.
  • the network device can perform GC-PDCCH configuration for the terminal device, for example, configure the period and time-frequency position of the GC-PDCCH, so that the terminal device can receive the GC-PDCCH according to the above configuration.
  • the network device can use the unlicensed spectrum to send the GC-PDCCH; it can also use the licensed spectrum, such as the primary carrier, to send the GC-PDCCH, so as to improve the reliability of GC-PDCCH transmission.
  • the GC-PDCCH received by the terminal device includes SFI information (SFI information may also be referred to as SFI for short), and the SFI information is used to indicate a slot format combination of one or more time slots.
  • SFI information may also be referred to as SFI for short
  • SFI information is used to indicate a slot format combination of one or more time slots.
  • SFI information mentioned in the embodiment of this specification is used to indicate the time slot format combination of one or more time slots, or it can be called SFI information used to indicate the time slot format combination, and the time slot format combination Used to indicate the time slot format of one or more time slots.
  • the network device can configure multiple (less than or equal to 512) slot format combinations for the terminal device through Radio Resource Control (RRC) signaling, and each slot format combination can indicate 1-256 The slot format of each slot.
  • RRC Radio Resource Control
  • each slot format combination can indicate 1-256 The slot format of each slot. It should be noted that although this is called a time slot format combination, in fact, the time slot format combination may include only one time slot.
  • Table 1 schematically shows the time slot format of some time slots.
  • the leftmost column is the time slot format index.
  • the maximum number of time slot formats supported by NR Rel15 is 256, including indicating that each symbol of the time slot is Downlink (Downlink, D), Uplink (Uplink, U) or Flexible (Flexible, F).
  • time slot format indexes 56 to 254 are reserved time slot formats; time slot format index 255 is a time slot format that does not indicate the dynamic uplink and downlink status of the symbol.
  • the SFI information when the SFI information indicates the time slot format combination of one or more time slots, it may specifically indicate the time slot format index of one or more time slots.
  • the terminal equipment is usually configured with multiple time slot format combinations, and each time slot format combination may also include an index. Therefore, the SFI information may also only indicate the index of the time slot format combination.
  • the time slot format combination indicated by SFI is (0, 4, 1, 18).
  • the time slot format of the 4 time slots in the time slot format combination is (DDDDDDDDD, DDDDDDDDDFF, UUUUUUUUUUUUUUU , DDDFFFFFF).
  • the slot format combination indicated by SFI is (0, 4, 1, 18, 255, 255). From Table 1, it can be seen that the slot format of the 6 slots in the slot format combination is ( DDDDDDDDD, DDDDDDDDDDFF, UUUUUUUUUUU, DDDFFFFFF, XXXXXXXXXXXX, XXXXXXXXXXXX).
  • the above X may indicate the dynamic uplink and downlink status without an indicator symbol (the following is the same).
  • the time slot format with all Xs can also be any one of the time slot format indexes 56-254 in Table 1.
  • S104 Determine the end position of the COT according to the time slot format combination indicated by the SFI information.
  • the COT mentioned in this step may be the continuous transmission time after the network device acquires the channel.
  • the end position of the COT may be the position of the end symbol of the COT, including but not limited to the position of the time slot where the end symbol is located and the position of the end symbol in the time slot.
  • FIG. 2 is a schematic diagram of the time domain of the COT of the network device shown.
  • the horizontal axis represents time
  • the vertical axis (not shown) represents frequency
  • the shaded area with diagonal lines represents the area occupied by GC-PDCCH.
  • Figure 2 schematically shows three GC-PDCCHs.
  • the COT in Figure 2 spans two GC-PDCCH cycles, and the end position of the COT can be implicitly indicated by the SFI in the second GC-PDCCH (ie, the GC-PDCCH in the middle position). Normally, the start position of COT does not need to be indicated.
  • the end position of COT is determined. Specifically, it can be determined according to the time slot format of one or more time slots in the time slot format combination indicated by SFI information. End position.
  • the end symbol of the COT is the last non-flexible symbol among all symbols included in the slot(s) of the slot format combination (one or more).
  • the non-flexible symbols mentioned here can be uplink symbols or downlink symbols.
  • S104 may specifically determine the last non-flexible symbol among all symbols included in the time slot in the time slot format combination, and use the last non-flexible symbol as the end position of the COT.
  • one or more (continuous) flexible symbols may be included after the last non-flexible symbol, and these one or more continuous flexible symbols may be referred to as non-COT (out of COT) indications.
  • the end symbol of the COT is the last symbol of the last non-specified time slot format in the time slot of the time slot format combination.
  • S104 may specifically determine the last symbol of the time slot of the last non-specified time slot format among the time slots in the time slot format combination, and use the determined last symbol as the end position of the COT.
  • one or more (consecutive) time slots of the specified time slot format can be included after the last time slot.
  • These one or more time slots of the specified time slot format can be called non-COT. (out of COT) instructions.
  • the end symbol of the COT is the last non-flexible symbol of the last non-specified time slot format in the time slot of the time slot format combination.
  • S104 may specifically determine the last non-flexible symbol of the time slot of the last non-specified time slot format among the time slots in the time slot format combination, and use the last non-flexible symbol as the end position of the COT.
  • one or more (continuous) flexible symbols can be included after the last non-specified time slot format; at the same time, after the last non-specified time slot format, it can also include One or more (continuous) time slots in the specified time slot format, therefore, the above one or more (continuous) flexible symbols and (last) one or more time slots in the specified time slot format can be referred to as non-COT (out of COT) instructions.
  • the non-designated time slot format mentioned above can be a time slot format other than the specified time slot format in Table 1.
  • the non-designated time slot format can be the time slot format index 0 to 55 in Table 1. Any one of.
  • time slot format can also be referred to as Time slot type
  • designated time slot format can also be called designated time slot type, preset time slot type or preset time slot format, etc.
  • non-designated time slot format can also be called non-designated time slot type, non-preset time
  • the slot type is also called a slot format other than the specified slot format, etc.
  • the GC-PDCCH received by the terminal equipment includes SFI information.
  • the SFI information is used to indicate the time slot format combination of one or more time slots.
  • the format combination determines the end position of the COT.
  • the embodiment of the present application implicitly indicates the end position of the COT through the time slot format combination indicated by the SFI, which can realize the effective indication of the COT.
  • Subsequent terminal devices can also share the COT and access channels faster to improve the utilization efficiency of unlicensed spectrum; at the same time, terminal devices can reduce some unnecessary operations (such as PDCCH monitoring) to save power consumption.
  • the various embodiments of the present application implicitly indicate the end position of COT through the combination of the slot format indicated by the SFI carried by the GC-PDCCH.
  • the GC-PDCCH is for the terminal equipment in the entire cell. A group of user equipment, thus narrowing the user range to a certain extent;
  • the GC-PDCCH is aimed at a group of user equipment, thereby saving signaling Overhead.
  • the end position of the COT is determined. Specifically, it may be to determine all symbols of the time slot included in the time slot format combination. , The last non-flexible symbol. That is, the last non-flexible symbol is the ending symbol of COT (COT ending symbol).
  • this slot format combination in the slot format is 4 slots (dDDDDDDDD, DDDDDDDDDFF, UUUUUUUUUUUUUUUUU, DD D FFFFFF), and the bold underlined symbols D COT end symbol.
  • the end position of the COT is determined according to the time slot format combination indicated by the SFI information mentioned in S104 of the embodiment 100. Specifically, it may be determined in all time slots included in the time slot format combination. , The last symbol of the time slot of the last non-specified time slot format. That is, the last symbol of the time slot of the next non-designated time slot format is the end symbol of COT.
  • the slot format of the 6 slots in this slot format combination is (DDDDDDDDD, DDDDDDDDDFF, UUUUUUUUUUU, DDDFFFFFFF F , XXXXXXXXXXXX, XXXXXXXXXXXXXXX), and the bolded and underlined F symbol is the end symbol of COT.
  • the end position of the COT is determined according to the time slot format combination indicated by the SFI information mentioned in S104 of the embodiment 100. Specifically, it may be determined in all time slots included in the time slot format combination. , The last non-flexible symbol of the time slot of the last non-specified time slot format. That is, the last non-flexible symbol of the slot of the latter non-designated slot format is the end symbol of the COT.
  • the terminal device may also ignore the status of time slots and/or symbols outside the COT indicated by the SFI information.
  • the slot format information indicating a combination of a slot format in SFI 6 slots is (DDDDDDDDD, DDDDDDDDDFF, UUUUUUUUUUU, DD D FFFFFF, XXXXXXXXXXXXX, XXXXXXXXXXX), and the bold underlined symbols are the end symbol D of COT ,
  • the terminal equipment can ignore the following symbols and time slots FFFFFF, XXXXXXXXXXXXXX, XXXXXXXXXXXXXXX.
  • the terminal device may further include the following step: determining whether the time domain position of the GC-PDCCH is in the terminal device (a group of receiving GC-PDCCH) Any one of the terminal equipment, the follow-up is similar) In the COT (UE initiated COT) initiated. If it is determined that the time domain position of the GC-PDCCH is within the COT initiated by the terminal device, the terminal device does not share the aforementioned COT.
  • the time domain position of the second GC-PDCCH in Figure 3 is within the COT initiated by the terminal device.
  • the start position of the COT refer to the start position of the UE COT in Figure 3
  • the end position of the COT is refer to Figure 3
  • a group of terminal devices that receive the second GC-PDCCH do not share the aforementioned COT.
  • the GC-PDCCH includes a preset field
  • the determining whether the time domain position of the GC-PDCCH is in the COT initiated by the terminal device includes: according to the indication value of the preset field, It is determined whether the time domain position of the GC-PDCCH is within the COT initiated by the terminal device.
  • the COT duration field is set to 0 or a specific value to indicate the COT initiated for the terminal device.
  • the symbols included in the time slot in the time slot format combination indicated by the SFI information are all flexible symbols, it is determined that the time domain position of the GC-PDCCH is within the COT initiated by the terminal device.
  • the time slots in the time slot format combination indicated by the SFI information are all specified time slot formats, it is determined that the time domain position of the GC-PDCCH is within the COT initiated by the terminal device.
  • the specified time slot format mentioned here includes at least one of the following:
  • the above multiple embodiments are specific, if the COT duration field in the GC-PDCCH is set to 0; or the time slot format indicated by the SFI is combined as (255, 255, 255, 255, 255, 255); or when the slot format combination indicated by SFI is (2, 2, 2, 2, 2, 2) (all flexible symbols), it indicates that the GC-PDCCH transmission is a COT initiated by the terminal device , The behavior of the terminal device remains unchanged.
  • the method further includes: if the target LBT subband is available and semi-static uplink data is configured or scheduled on the uplink symbol indicated by the SFI information in the COT, performing the COT In the sharing operation, format 2 is performed on the target LBT subband (Listen Before Talk, LBT); wherein, the target LBT subband is any one of the broadband.
  • the terminal device can share the COT initiated by the network device, so that the terminal device can quickly access the channel and improve the utilization efficiency of the unlicensed spectrum.
  • the above format 2 (or Cat 2 or Type II) means 16us or 25us channel listening, which can be used for specific signal acquisition channels, and the maximum continuous transmission length should be less than a certain value, such as 1ms.
  • the terminal device may also send the uplink data on the uplink symbol indicated by the SFI information in the COT.
  • the uplink data may be, for example, a physical random access channel (Physical Random Access Channel, PRACH); a periodic or semi-static sounding reference signal (Sounding Reference Signal, SRS), etc.
  • the method further includes: if the target LBT subband is not available (not available) ), cancel PDCCH monitoring and cancel semi-static downlink reception on the target LBT subband in the COT; wherein, the target LBT subband is any one of the broadband.
  • this embodiment may also determine whether to cancel semi-static uplink transmission on the target LBT subband according to the time slot format indicated by the SFI information in the COT.
  • the uplink data may be, for example, PRACH; periodic or semi-static SRS, etc.
  • the terminal device is configured or scheduled with semi-static uplink data:
  • the semi-static uplink data transmission processing is cancelled.
  • the idle condition of each LBT subband includes whether the LBT subband is in an invalid state. If a certain LBT subband is in an invalid state, it may specifically be that the network device has not performed the LBT monitoring of the LBT subband.
  • the method further includes: not changing the transmission behavior on the target LBT subband, that is, ignoring the indication of the SFI information on the target LBT subband.
  • the terminal device ignores the indication of the SFI information on the target LBT subband, and continues to send or receive processing according to the previous semi-static configuration; wherein, the target LBT subband is any one of the broadband.
  • the transmission method of the GC-PDCCH according to the embodiment of the present application is described in detail above with reference to FIG. 1.
  • the GC-PDCCH transmission method according to another embodiment of the present application will be described in detail below in conjunction with FIG. 4. It can be understood that the interaction between the network device and the terminal device described from the network device side is the same as the description on the terminal device side in the method shown in FIG. 1, and to avoid repetition, the related description is appropriately omitted.
  • Fig. 4 is a schematic diagram of the implementation process of the GC-PDCCH transmission method according to the embodiment of the present application, which can be applied to the network device side. As shown in FIG. 4, the method 400 includes:
  • S402 Send a GC-PDCCH, where the GC-PDCCH includes SFI information.
  • the SFI information is used to indicate the time slot format combination of one or more time slots; the time slot format combination is used to indicate the end position of the COT.
  • the GC-PDCCH sent by the network device includes SFI information, and the SFI information is used to indicate the time slot format combination of one or more time slots.
  • the terminal device can follow the above time slot format The combination determines the end position of the COT.
  • the embodiment of the present application implicitly indicates the end position of the COT through the time slot format combination indicated by the SFI, which can realize the effective indication of the COT.
  • Subsequent terminal devices can also share the COT to improve the utilization efficiency of unlicensed spectrum; at the same time, terminal devices can reduce some unnecessary operations (such as PDCCH monitoring) to save power consumption.
  • the various embodiments of the present application implicitly indicate the end position of COT through the combination of the slot format indicated by the SFI carried by the GC-PDCCH.
  • the GC-PDCCH is for the terminal equipment in the entire cell. A group of user equipment, thus narrowing the user range to a certain extent;
  • the GC-PDCCH is aimed at a group of user equipment, thereby saving signaling Overhead.
  • the end position of the COT includes the end symbol of the COT
  • the end symbol of the COT is the last non-flexible symbol among the symbols included in the one or more time slots.
  • the end position of the COT includes the end symbol of the COT
  • the end symbol of the COT is the last symbol of the last non-designated time slot format in the one or more time slots.
  • the end position of the COT includes the end symbol of the COT
  • the end symbol of the COT is the last non-flexible symbol of the last non-designated time slot format in the one or more time slots.
  • the GC-PDCCH includes a preset field, the preset field includes an indication value, and the indication value is used to indicate whether the time domain position of the GC-PDCCH is in the terminal device Within the initiated COT.
  • the time domain position of the GC-PDCCH is in the COT initiated by the terminal device
  • the symbols included in the one or more time slots are all flexible symbols;
  • the time slot format of the one or more time slots is a designated time slot format.
  • the transmission method of the GC-PDCCH according to the embodiment of the present application is described in detail above in conjunction with Fig. 1 to Fig. 4.
  • the terminal device according to the embodiment of the present application will be described in detail below with reference to FIG. 5.
  • Fig. 5 is a schematic structural diagram of a terminal device according to an embodiment of the present application. As shown in FIG. 5, the terminal device 500 includes:
  • the receiving module 502 may be used to receive the GC-PDCCH, where the GC-PDCCH includes SFI information, and the SFI information is used to indicate the time slot format combination of one or more time slots;
  • the determining module 504 may be used to determine the end position of the COT according to the time slot format combination indicated by the SFI information.
  • the received GC-PDCCH includes SFI information, which is used to indicate the time slot format combination of one or more time slots, and the terminal device can determine the end of COT according to the above time slot format combination position.
  • the embodiment of the present application implicitly indicates the end position of the COT through the time slot format combination indicated by the SFI, which can realize the effective indication of the COT.
  • Subsequent terminal devices can also share the COT to improve the utilization efficiency of unlicensed spectrum; at the same time, terminal devices can reduce some unnecessary operations (such as PDCCH monitoring) to save power consumption.
  • the various embodiments of the present application implicitly indicate the end position of COT through the combination of the slot format indicated by the SFI carried by the GC-PDCCH.
  • the GC-PDCCH is for the terminal equipment in the entire cell. A group of user equipment, thus narrowing the user range to a certain extent;
  • the GC-PDCCH is aimed at a group of user equipment, thereby saving signaling Overhead.
  • the end position of the COT includes the end symbol of the COT
  • the end symbol of the COT is the last non-flexible symbol among the symbols included in the one or more time slots.
  • the end position of the COT includes the end symbol of the COT
  • the end symbol of the COT is the last symbol of the last non-designated time slot format in the one or more time slots.
  • the end position of the COT includes the end symbol of the COT
  • the end symbol of the COT is the last non-flexible symbol of the last non-designated time slot format in the one or more time slots.
  • the determining module 504 may also be used for:
  • the determining module 504 may also be used for:
  • the GC-PDCCH includes a preset field
  • the determining module 504 is specifically configured to:
  • the indication value of the preset field it is determined whether the time domain position of the GC-PDCCH is within the COT initiated by the terminal device.
  • the determining module 504 is specifically configured to:
  • the time domain position of the GC-PDCCH is within the COT initiated by the terminal device.
  • time slot format of the one or more time slots is a designated time slot format, it is determined that the time domain position of the GC-PDCCH is within the COT initiated by the terminal device.
  • the terminal device 500 further includes a sharing module for:
  • the target LBT subband is available and semi-static uplink data is configured or scheduled on the uplink symbol indicated by the SFI information in the COT, then the COT sharing operation is performed, and the target LBT subband Listen to LBT before proceeding to format 2;
  • the target LBT subband is any one of the broadband.
  • the terminal device 500 further includes a sending module, configured to:
  • the uplink data is sent on the uplink symbol.
  • the receiving module 502 may also be used for:
  • the target LBT subband is any one of the broadband.
  • the receiving module 502 may also be used for:
  • the idle condition of each LBT subband includes whether the LBT subband is in an invalid state.
  • the receiving module 502 may also be used for:
  • the target LBT subband is any one of the broadband.
  • the specified time slot format includes at least one of the following:
  • the terminal device 500 can refer to the process of the method 100 corresponding to the embodiment of the present application, and each unit/module in the terminal device 500 and the other operations and/or functions described above are used to implement the corresponding methods in the method 100.
  • Fig. 6 is a schematic structural diagram of a network device according to an embodiment of the present application. As shown in FIG. 6, the network device 600 includes:
  • the sending module 602 may be used to send GC-PDCCH, where the GC-PDCCH includes SFI information;
  • the SFI information is used to indicate the time slot format combination of one or more time slots; the time slot format combination is used to indicate the end position of the COT.
  • the sent GC-PDCCH includes SFI information, which is used to indicate the time slot format combination of one or more time slots, and the terminal device can determine the end position of the COT according to the above time slot format combination .
  • the embodiment of the present application implicitly indicates the end position of the COT through the time slot format combination indicated by the SFI, which can realize the effective indication of the COT.
  • Subsequent terminal devices can also share the COT to improve the utilization efficiency of unlicensed spectrum; at the same time, terminal devices can reduce some unnecessary operations (such as PDCCH monitoring) to save power consumption.
  • the various embodiments of the present application implicitly indicate the end position of COT through the combination of the slot format indicated by the SFI carried by the GC-PDCCH.
  • the GC-PDCCH is for the terminal equipment in the entire cell. A group of user equipment, thus narrowing the user range to a certain extent;
  • the GC-PDCCH is aimed at a group of user equipment, thereby saving signaling Overhead.
  • the end position of the COT includes the end symbol of the COT
  • the end symbol of the COT is the last non-flexible symbol among the symbols included in the one or more time slots.
  • the end position of the COT includes the end symbol of the COT
  • the end symbol of the COT is the last symbol of the last non-designated time slot format in the one or more time slots.
  • the end position of the COT includes the end symbol of the COT
  • the end symbol of the COT is the last non-flexible symbol of the last non-designated time slot format in the one or more time slots.
  • the GC-PDCCH includes a preset field, the preset field includes an indication value, and the indication value is used to indicate whether the time domain position of the GC-PDCCH is in the terminal device Within the initiated COT.
  • the time domain position of the GC-PDCCH is in the COT initiated by the terminal device
  • the symbols included in the one or more time slots are all flexible symbols; or,
  • the time slot format of the one or more time slots is a designated time slot format.
  • the network device 600 can refer to the process of the method 400 corresponding to the embodiment of the present application, and each unit/module in the network device 600 and the above-mentioned other operations and/or functions are used to implement the corresponding methods in the method 400.
  • Fig. 7 is a block diagram of a terminal device according to another embodiment of the present application.
  • the terminal device 700 shown in FIG. 7 includes: at least one processor 701, a memory 702, at least one network interface 704, and a user interface 703.
  • the various components in the terminal device 700 are coupled together through the bus system 705.
  • the bus system 705 is used to implement connection and communication between these components.
  • the bus system 705 also includes a power bus, a control bus, and a status signal bus.
  • various buses are marked as the bus system 705 in FIG. 7.
  • the user interface 703 may include a display, a keyboard, a pointing device (for example, a mouse, a trackball), a touch panel or a touch screen, etc.
  • the memory 702 in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (Random Access Memory, RAM), which is used as an external cache.
  • RAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • Synchronous DRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • Double Data Rate SDRAM Double Data Rate SDRAM
  • DDRSDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • Enhanced SDRAM, ESDRAM Synchronous Link Dynamic Random Access Memory
  • Synchronous Link Dynamic Random Access Memory Synchronous Link Dynamic Random Access Memory
  • DRRAM Direct Rambus RAM
  • the memory 702 of the system and method described in the embodiments of the present application is intended to include, but is not limited to, these and any other suitable types of memory.
  • the memory 702 stores the following elements, executable modules or data structures, or a subset of them, or an extended set of them: an operating system 7021 and an application 7022.
  • the operating system 7021 includes various system programs, such as a framework layer, a core library layer, a driver layer, etc., for implementing various basic services and processing hardware-based tasks.
  • the application program 7022 includes various application programs, such as a media player (Media Player), a browser (Browser), etc., which are used to implement various application services.
  • a program that implements the method of the embodiment of the present application may be included in the application program 7022.
  • the terminal device 700 further includes: a computer program stored in the memory 702 and capable of running on the processor 701.
  • the computer program is executed by the processor 701 to implement the steps of the method embodiment 100 as follows.
  • the method disclosed in the foregoing embodiments of the present application may be applied to the processor 701 or implemented by the processor 701.
  • the processor 701 may be an integrated circuit chip with signal processing capability. In the implementation process, the steps of the foregoing method can be completed by an integrated logic circuit of hardware in the processor 701 or instructions in the form of software.
  • the aforementioned processor 701 may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other Programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module may be located in a computer-readable storage medium that is mature in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the computer-readable storage medium is located in the memory 702, and the processor 701 reads information in the memory 702, and completes the steps of the foregoing method in combination with its hardware.
  • a computer program is stored on the computer-readable storage medium, and when the computer program is executed by the processor 701, each step of the above method embodiment 100 is implemented.
  • the embodiments described in the embodiments of the present application may be implemented by hardware, software, firmware, middleware, microcode, or a combination thereof.
  • the processing unit can be implemented in one or more application specific integrated circuits (ASIC), digital signal processor (Digital Signal Processing, DSP), digital signal processing equipment (DSP Device, DSPD), programmable Logic device (Programmable Logic Device, PLD), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA), general-purpose processors, controllers, microcontrollers, microprocessors, and others for performing the functions described in this application Electronic unit or its combination.
  • ASIC application specific integrated circuits
  • DSP Digital Signal Processing
  • DSP Device digital signal processing equipment
  • PLD programmable Logic Device
  • PLD Field-Programmable Gate Array
  • FPGA Field-Programmable Gate Array
  • the technology described in the embodiments of the present application can be implemented through modules (for example, procedures, functions, etc.) that execute the functions described in the embodiments of the present application.
  • the software codes can be stored in the memory and executed by the processor.
  • the memory can be implemented in the processor or external to the processor.
  • the terminal device 700 can implement the various processes implemented by the terminal device in the foregoing embodiments, and can achieve the same or equivalent technical effects. To avoid repetition, details are not described herein again.
  • FIG. 8 is a structural diagram of a network device applied in an embodiment of the present application, which can implement the details of the method embodiment 400 and achieve the same effect.
  • the network device 800 includes: a processor 801, a transceiver 802, a memory 803, and a bus interface, where:
  • the network device 800 further includes: a computer program stored in the memory 803 and capable of running on the processor 801, and the computer program is executed by the processor 801 to implement the steps of the method embodiment 400.
  • the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 801 and various circuits of the memory represented by the memory 803 are linked together.
  • the bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits. These are all known in the art, and therefore, no further description will be given here.
  • the bus interface provides the interface.
  • the transceiver 802 may be a plurality of elements, including a transmitter and a receiver, and provide a unit for communicating with various other devices on a transmission medium.
  • the processor 801 is responsible for managing the bus architecture and general processing, and the memory 803 can store data used by the processor 801 when performing operations.
  • the embodiment of the present application also provides a computer-readable storage medium, and a computer program is stored on the computer-readable storage medium.
  • a computer program is stored on the computer-readable storage medium.
  • the computer program When the computer program is executed by a processor, it implements any one of the method embodiment 100 and the method embodiment 400 described above. Each process can achieve the same technical effect. In order to avoid repetition, I will not repeat it here.
  • the computer-readable storage medium such as read-only memory (Read-Only Memory, ROM for short), random access memory (Random Access Memory, RAM for short), magnetic disk, or optical disk, etc.
  • the technical solution of this application essentially or the part that contributes to the existing technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, The optical disc) includes several instructions to make a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the various embodiments of the present application.
  • a terminal which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.

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

Abstract

Selon des modes de réalisation, la présente invention concerne un procédé et un dispositif pour un GC-PDCCH. Le procédé consiste : à recevoir un GC-PDCCH, le GC-PDCCH comprenant des informations SFI, les informations SFI étant utilisées pour indiquer une combinaison de formats d'intervalle d'un ou de plusieurs intervalles ; en fonction de la combinaison de formats d'intervalle indiquée par les informations SFI, à déterminer la position de fin d'un COT.
PCT/CN2020/126510 2019-11-07 2020-11-04 Procédé et dispositif de transmission pour gc-pdcch WO2021088875A1 (fr)

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