WO2020125289A1 - 占有时隙的确定方法及装置、存储介质、用户终端 - Google Patents

占有时隙的确定方法及装置、存储介质、用户终端 Download PDF

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Publication number
WO2020125289A1
WO2020125289A1 PCT/CN2019/118756 CN2019118756W WO2020125289A1 WO 2020125289 A1 WO2020125289 A1 WO 2020125289A1 CN 2019118756 W CN2019118756 W CN 2019118756W WO 2020125289 A1 WO2020125289 A1 WO 2020125289A1
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Prior art keywords
time slot
slot format
indicated
spatial
base station
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PCT/CN2019/118756
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English (en)
French (fr)
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周欢
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北京展讯高科通信技术有限公司
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Priority to EP19897581.5A priority Critical patent/EP3902174A4/en
Priority to US17/415,207 priority patent/US20220022054A1/en
Publication of WO2020125289A1 publication Critical patent/WO2020125289A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0078—Timing of 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
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • 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
    • 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
    • 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
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space

Definitions

  • the present invention relates to the field of communication technologies, and in particular, to a method and device for determining occupied time slots, storage media, and user terminals.
  • the 3rd Generation Partnership Project (3GPP) standards organization will study how to deploy NR networks on unlicensed spectrum to achieve fair and effective use of unlicensed spectrum and improve 5G New Radio (NR) system The purpose of the data transmission rate.
  • the 3GPP LTE system uses a Listen-Before-Talk (LBT) process to achieve the coexistence of different operators and other systems in the unlicensed spectrum.
  • LBT Listen-Before-Talk
  • PDCCH Physical Downlink Control Channel
  • the evolved base station (Evolved Node B, gNB) uses LBT in a certain direction and accesses the channel
  • the user terminal User Equipment, UE
  • the length of the occupied channel that is, the occupied time slot, which helps to enable the The UE shares the channel with the base station to increase the channel occupancy rate.
  • the transmission mode of the beam introduced in NR is non-omnidirectional transmission, and it is often transmitted by using a specific beam in a certain direction.
  • the UE cannot know the beam direction of the channel occupied by the base station, and it is difficult to effectively share the channel with the base station.
  • the technical problem solved by the present invention is to provide a method and device for determining the occupied time slot, storage medium, and user terminal, which can enable the UE to more effectively share channels with the base station.
  • an embodiment of the present invention provides a method for determining an occupied time slot, which includes the following steps: receiving a slot format indication index and a number N of time slot format indication slots from a base station through a PDCCH, and passing the The time slot format indication index determines the starting position of the time slot indicated by the time slot format in the PDCCH; the number M of spatial directions received from the base station, different spatial directions have different spatial reception parameters, and the slave base station Receiving multiple indication signals sent from M spatial directions, each of which corresponds to a spatial direction and has a spatial reception parameter; according to the indication signal, determine the M spatial directions; in the M spatial directions , Determine the time slot occupied by the base station in each spatial direction according to the starting position of the time slot indicated in the time slot format in the PDCCH and the number N of time slots indicated in the time slot format; M is a positive integer, and N is a positive integer.
  • the slot format indication index is a slot format indication index in a single spatial direction; in the M spatial directions, the time slots indicated according to the slot format respectively start in the PDCCH
  • the starting position and the number N of time slots indicated by the time slot format, determining the time slots occupied by the base station in each spatial direction includes: in the first spatial direction, the time slots indicated according to the time slot format are in the PDCCH And the number N of time slots indicated by the time slot format determines the end position of the time slot indicated by the time slot format in the first spatial direction; in the second spatial direction, the first spatial direction
  • the end position of the time slot indicated by the time slot format on is the starting position of the time slot indicated by the time slot format in the PDCCH in the second spatial direction, and the number of time slots indicated by the time slot format N , Determine the end position of the time slot indicated by the time slot format in the second space direction; in turn, in the Mth space direction, the end position of the time slot indicated by the time slot format in the M-1th space direction is The starting position of
  • the slot format indication index is a slot format indication index in M spatial directions; in the M spatial directions, the time slots indicated in the PDCCH according to the slot format are respectively The starting position and the number N of time slots indicated by the time slot format, and determining the time slots occupied by the base station in each spatial direction include: in the M spatial directions, time slots indicated according to the time slot format The starting position in the PDCCH and the number N of slots indicated by the slot format determine the end position of the slot indicated by the slot format in each spatial direction, thereby determining the base station in each spatial direction Occupied time slot.
  • the indication signal includes: a downlink reference signal or an SSB signal.
  • the method for determining the occupied time slot further includes: determining one or more of the following frequency domain resources of the signal as the frequency domain resources occupied by the base station in various spatial directions: the PDCCH, all The PDSCH scheduled by the PDCCH and the indicator signal.
  • determining the M spatial directions according to the indication signal includes: receiving high-level signaling from the base station, the high-level signaling indicating the correspondence between each indication signal and the spatial direction; according to the indication signal And the corresponding relationship, to determine the M spatial directions.
  • the number of the indication signals is M
  • determining the M spatial directions according to the indication signal includes: receiving high-level signaling from a base station, and the high-level signaling indicates each indication signal and the space
  • the directions have a one-to-one correspondence; according to the indication signal and the one-to-one correspondence, the M spatial directions are determined.
  • an embodiment of the present invention provides an apparatus for determining occupied slots, including: an index receiving module adapted to receive a slot format indication index and the number of slots N indicated by the slot format from a base station through a PDCCH , And determine the starting position of the time slot indicated by the time slot format in the PDCCH by using the time slot format indication index; the indication signal receiving module is adapted to receive the number M of spatial directions from the base station, different spaces The direction has different spatial reception parameters, and multiple indication signals sent from the M spatial directions are received from the base station, each indication signal corresponds to a spatial direction and has a spatial reception parameter; the spatial direction determination module is adapted to respond to the indication A signal to determine the M spatial directions; a time slot determination module adapted to respectively start in the PDCCH and the time slot format of the time slot indicated by the time slot format in the M space directions The number N of the indicated time slots determines the time slots occupied by the base station in various spatial directions; where M is a positive integer and N is a positive integer.
  • an embodiment of the present invention provides a storage medium on which computer instructions are stored, and when the computer instructions run, the steps of the method for determining the occupied time slot described above are executed.
  • an embodiment of the present invention provides a user terminal, including a memory and a processor, the memory stores computer instructions that can run on the processor, and when the processor runs the computer instructions The steps of the above method for determining the occupied time slot are executed.
  • the UE by setting the number M of the spatial directions sent by the base station and a plurality of indication signals sent from the M spatial directions, the UE can determine the M spatial directions according to the indication signals, and then determine the The time slots occupied by the base station in various spatial directions are compared with the prior art where the UE cannot know the beam direction of the channel occupied by the base station. With the solution of the embodiment of the present invention, the UE can more effectively share channels with the base station.
  • the UE may adopt various schemes to determine the time slots occupied by the base station in various spatial directions, thereby helping users to select according to specific situations and improving user convenience.
  • the high-level signaling indicates that each indication signal has a one-to-one correspondence with the spatial direction, which helps to make the UE more accurate Determine the beam direction of the channel occupied by the base station to further improve the effectiveness of channel sharing with the base station.
  • FIG. 1 is a flowchart of a method for determining occupied time slots in an embodiment of the present invention
  • FIG. 2 is a flowchart of a specific implementation manner of step S13 in FIG. 1;
  • step S13 in FIG. 1 is a flowchart of another specific implementation manner of step S13 in FIG. 1;
  • step S14 in FIG. 1 is a flowchart of a specific implementation manner of step S14 in FIG. 1;
  • FIG. 5 is a schematic diagram of a working scenario of indicating a starting position of a time slot in a PDCCH indicated by a time slot format in an embodiment of the present invention
  • FIG. 6 is a schematic diagram of another working scenario for indicating a starting position of a slot indicated by a slot format in a PDCCH in an embodiment of the present invention
  • FIG. 7 is a schematic structural diagram of a device for determining occupied slots in an embodiment of the present invention.
  • the UE when gNB uses LBT in a certain direction and accesses the channel, the UE can determine the length of the occupied channel, that is, the occupied time slot, which helps the UE to share the channel with the base station and improve Channel occupancy.
  • each radio frame is divided into 10 subframes of the same size and a length of 1 ms.
  • Each subframe may contain multiple subframes with different subcarrier intervals.
  • Each time slot is composed of a certain number of symbols, and the number of symbols is determined by the type of cyclic prefix (Cyclic Prefix, CP).
  • NR Compared with LTE's special subframe structure, which has a fixed number of 10 downlink, GP, and uplink symbols, NR introduces a slot format (Slot Format, SF), which includes downlink and flexible (flexible, indicated by X) in a certain time slot And the number of upstream symbols.
  • SF can include three configuration methods, which are semi-static cell-level Radio Resource Control (RRC) signaling configuration method, UE-specific RRC signaling configuration method, and dynamic slot format information (Dynamic SFI) configuration method.
  • RRC Radio Resource Control
  • UE-specific RRC signaling configuration method UE-specific RRC signaling configuration method
  • Dynamic SFI dynamic slot format information
  • the configuration method of the dynamic time slot format information is to use the PDCCH to dynamically transmit the time slot format indication (Slot Format Indication, SFI) information to a group of UEs, and the format of the downlink control information (Downlink Control Information, DCI) is called DCI Format 2-0.
  • SFI Time Slot Format Indication
  • DCI Downlink Control Information
  • the SFI information carried on the PDCCH may indicate the format of one or more time slots (Slots) on one or more carriers, which is called a time slot format combination set, and the position of the time slot format combination set in the DCI is configured by high-level signaling.
  • the index information is obtained and the index points to a UE-specific table, which can know which symbols in the time slot are "Uplink (UL)” and which are “Downlink (DL)” , Which are'flexible'.
  • the above UE-specific table may be configured and combined in a "single time slot format” table.
  • the "Single Time Slot Format” table contains all the time slot formats (less than 256) that can be supported in NR.
  • the 3GPP LTE system uses the LBT process to achieve the coexistence of different operators and other systems in the unlicensed spectrum.
  • nodes in an unlicensed spectrum first use clear channel assessment (Clear Channel Assessment, CCA) to determine whether the current channel (in 20MHz units) is available.
  • CCA Clear Channel Assessment
  • any LBT process includes Energy Detection to determine whether the channel is occupied.
  • Assisted authorized access (Licensed-assisted Access, Using LTE, LAA-LTE) supports two channel access processes in downlink transmission.
  • LAA uplink transmission also supports these two channel access processes, called Type 1 channel access and Type 2 channel access.
  • Type 1 channel access is based on Cat 4 channel access
  • Type 2 is based on fixed time length (Cat 2) channel access (LBT of at least 25us before transmission).
  • Type 1 process Detect the channel is idle during the delay duration (Defer duration T d ), and N in Step 4 is 0 and N increases with the channel status (Slot duration), proceed as follows:
  • N N init , where N init is a random number from 0 to CW p ;
  • step 2 If the channel in the above additional defer duration T d is idle, step 2 is executed, otherwise step 5 is executed.
  • the above channel access process will require different maximum channel occupation time (Maximum Channel Occupy Time, MCOT) according to different channel access priorities, which is T mcot,p in the table below, which means the maximum available channel time .
  • MCOT Maximum Channel Occupy Time
  • channel access may use different priorities, resulting in different channel occupation time.
  • the inventor of the present invention has found through research that in NR, the transmission mode of the introduced beam is a non-omnidirectional transmission, and a specific beam in a certain direction is often used for transmission.
  • the UE cannot know the beam direction of the channel occupied by the base station, and it is difficult to effectively share the channel with the base station.
  • the NR introduces a beam transmission method, that is, non-omnidirectional transmission, but a specific beam in a certain direction is used for transmission. More specifically, in order to support beam transmission, there are processes of beam management, beam indication, beam recovery and so on in the NR.
  • the protocol stipulates that beam indication uses Transmission Configuration (Transmission, Configuration, Indication, TCI) to indicate the characteristics of downlink transmission, such as Doppler frequency shift, Doppler spread, average delay, delay extension, and spatial reception parameter (beam).
  • TCI Transmission Configuration
  • the UE may configure up to M TCI-States (TCI-State) to indicate the PDCCH scheduling PDSCH transmission state, and M depends on the capabilities of the UE.
  • Each TCI-State contains the quasi-co-location (QCL) relationship between PDSCH, DMRS and one or two reference signals.
  • the quasi-co-location type of the PDCCH demodulation reference signal (Demodulation, Reference, Signal, DMRS) symbol and the reference signal is configured by higher layer signaling and then activated by the MAC layer signaling.
  • the channel state information reference signal (Channel-State Information Reference, CSI-RS) can be configured with the quasi-co-location type of CSI-RS or Single Sideband (SSB) signal.
  • the types of co-location can include the following:
  • -'QCL-TypeA' ⁇ Doppler shift Doppler shift, Doppler spread Doppler spread, average delay average delay, delay spread delay ⁇
  • the UE is informed of the uplink beam direction that should be adopted by configuring or indicating spatial correlation information (Spatial Relation Info).
  • the spatial correlation information of the periodic sounding reference signal (SRS) contains the SSB index, that is, the UE uses the same spatial transmission filter as the SSB to send the SRS; if the CSI-RS index is included, the UE uses the SCSI and receives CSI -The spatial transmission filter with the same RS; if the SRS index is included, the UE transmits the SRS using the same spatial transmission filter as the reference SRS.
  • SRS periodic sounding reference signal
  • the inventor of the present invention further found that, in the unlicensed spectrum, when the base station adopts LBT in a certain direction and accesses the channel, in addition to notifying the terminal of the channel occupation time, it also needs to notify the beam direction of the occupied channel, thereby effectively Channel sharing with terminals to increase channel occupancy and improve system performance.
  • the UE by setting the number M of the spatial directions sent by the base station and a plurality of indication signals sent from the M spatial directions, the UE can determine the M spatial directions according to the indication signals, and then determine the The time slots occupied by the base station in various spatial directions are compared with the prior art where the UE cannot know the beam direction of the channel occupied by the base station. With the solution of the embodiment of the present invention, the UE can more effectively share channels with the base station.
  • FIG. 1 is a flowchart of a method for determining an occupied time slot in an embodiment of the present invention.
  • the method for determining the occupied time slot may include steps S11 to S14:
  • Step S11 Receive the slot format indication index and the number N of timeslots indicated by the slot format from the base station through the PDCCH, and determine the timeslot indicated by the slot format in the PDCCH by using the slot format indication index The starting position of
  • Step S12 The number M of the spatial directions is received from the base station, different spatial directions have different spatial reception parameters, and multiple indication signals sent from the M spatial directions are received from the base station, each indication signal corresponding to a spatial direction and With space receiving parameters;
  • Step S13 Determine the M spatial directions according to the instruction signal
  • Step S14 In the M spatial directions, according to the starting position of the time slot indicated by the time slot format in the PDCCH and the number N of time slots indicated by the time slot format, determine that the base station is located Time slots occupied in various spatial directions.
  • M is a positive integer and N is a positive integer.
  • both the slot format indication index and the number N are configured by the base station, and then the UE receives from the base station through the PDCCH.
  • the configuration method of the dynamic time slot format information is that the base station uses the PDCCH to dynamically transmit time slot format indication index (SFI) information to a group of UEs, and the DCI format is called DCI format 2-0.
  • SFI time slot format indication index
  • the UE may determine the starting position of the time slot indicated in the time slot format in the PDCCH by using the SFI information.
  • the UE may determine the starting position.
  • the UE can determine the end position of the time slot indicated by the time slot format in the PDCCH according to the starting position and the number N of time slots indicated by the time slot format.
  • the UE receives the number M of spatial directions from the base station, and receives multiple indication signals sent from the M space directions from the base station.
  • each indication signal corresponds to a spatial direction and has spatial reception parameters.
  • the downlink and uplink transmissions allowed during the channel occupation time have the same spatial characteristics, that is, have the same spatial reception parameters.
  • the UE only downlink transmission of a specific TCI type D is allowed during the downlink transmission time, and the UE only needs to receive a downlink signal or channel with this QCL-TypeD if necessary. The UE does not receive downlink signals or channels with different QCL-TypeD.
  • the indication signal may include: a downlink reference signal or an SSB signal.
  • the downlink reference signal may include a CSI-RS signal, for example.
  • the number of spatial directions that the UE receives from the base station is 2, and the CSI-RS1 and CSI-RS2 signals sent from the two spatial directions are received from the base station.
  • the UE may determine the M spatial directions according to the indication signal.
  • FIG. 2 is a flowchart of a specific implementation manner of step S13 in FIG. 1.
  • the step of determining the M spatial directions according to the instruction signal may include steps S21 to S22, and each step will be described below.
  • the UE may receive high-level signaling from the base station, where the high-level signaling indicates the correspondence between each indication signal and the spatial direction;
  • the high-level signaling may be RRC signaling, for example.
  • step S22 the UE may determine the M spatial directions according to the indication signal and the corresponding relationship.
  • the number of the indication signals may not be limited.
  • the UE by setting the high-level signaling to indicate that each indication signal has a corresponding relationship with the spatial direction, it is helpful for the UE to accurately determine the beam direction of the channel occupied by the base station and improve the channel sharing with the base station. Effectiveness.
  • FIG. 3 is a flowchart of another specific implementation manner of step S13 in FIG.
  • the step of determining the M spatial directions according to the instruction signal may include steps S31 to S32, and each step will be described below.
  • the UE may receive high-level signaling from the base station, and the high-level signaling indicates that each indication signal has a one-to-one correspondence with the spatial direction;
  • the high-level signaling may be RRC signaling, for example.
  • step S32 the M spatial directions are determined according to the instruction signal and the one-to-one correspondence.
  • the high-level signaling indicates that each indication signal has a one-to-one correspondence with the spatial direction, which helps the UE to determine more accurately
  • the beam direction of the channel occupied by the base station further improves the effectiveness of channel sharing with the base station.
  • step S14 the UE in the M spatial directions respectively according to the starting position of the time slot indicated by the time slot format in the PDCCH and the time indicated by the time slot format
  • the number N of slots determines the time slots occupied by the base station in various spatial directions.
  • the UE may obtain M sets of slot format combination sets according to the slot format indication index carried by the PDCCH, and each set of slot format combination sets corresponds to the signal occupancy in a single spatial direction, and the UE can determine whether it needs to be performed Downstream reception in this direction, and upstream transmission.
  • the first group is the signal occupancy when the UE receives the spatial characteristics corresponding to CSI-RS 1, and the UE can determine whether Downlink reception in this direction and uplink transmission are required.
  • FIG. 4 is a flowchart of a specific implementation manner of step S14 in FIG. 1.
  • determine The steps of the time slots occupied in the space direction may include steps S41 to S43, and each step will be described below.
  • step S41 in the first spatial direction, according to the starting position of the time slot indicated by the time slot format in the PDCCH and the number N of time slots indicated by the time slot format, determine the The end position of the time slot indicated by the time slot format.
  • step S42 in the second spatial direction, the end position of the time slot indicated by the time slot format in the first spatial direction is the time slot indicated by the time slot format in the second spatial direction in the PDCCH
  • the starting position, and the end position of the time slot indicated by the time slot format in the second spatial direction is determined according to the number N of time slots indicated by the time slot format.
  • step S43 sequentially, in the Mth space direction, the end position of the time slot indicated by the time slot format in the M-1th space direction is the time slot indicated by the time slot format in the Mth space direction.
  • the time slot format indication index may be a time slot format indication index in a single spatial direction.
  • the step of indicating the starting position of the time slot indicated by the time slot format in the PDCCH may be indicated by higher layer signaling.
  • the high-level signaling may be RRC signaling, for example.
  • the UE may determine the end position of the time slot indicated by the slot format in the first spatial direction according to the start position of the time slot indicated by the slot format in the first spatial direction, and then determine in turn The start position and end position of the time slot indicated by the time slot format in each spatial direction, compared to the base station notifying the UE of the start position and end of the time slot indicated by the time slot format in each spatial direction to the UE through signaling Location helps save signaling.
  • FIG. 5 is a schematic diagram of a working scenario of indicating a starting position of a slot indicated by a slot format in a PDCCH in an embodiment of the present invention.
  • high-level signaling is only used to indicate the starting position a of the time slot in the PDCCH in the first spatial direction, and the UE needs to determine other positions by itself.
  • the UE determines the end position b according to the starting position a and the number N of time slots indicated by the slot format; further, the UE uses the position b as the second spatial direction
  • the starting position b on the page is determined according to the position b and the number N of the time slots indicated in the slot format; and the starting position and ending position in other spatial directions are confirmed in turn until the Mth space
  • the end position of the time slot indicated by the time slot format in the M-1th spatial direction is the starting position d of the time slot indicated by the time slot format in the Mth spatial direction in the PDCCH, and is based on
  • the number N of time slots indicated by the time slot format determines the end position e of the time slot indicated by the time slot format in the Mth space direction.
  • the UE may determine the end position of the time slot indicated by the slot format in the first spatial direction according to the start position of the time slot indicated by the slot format in the first spatial direction, and then determine in turn The start position and end position of the time slot indicated by the time slot format in each spatial direction, compared to the base station notifying the UE of the start position and end of the time slot indicated by the time slot format in each spatial direction to the UE through signaling Location helps save signaling.
  • step S14 in FIG. 1 may also have another specific implementation manner.
  • the starting position of the time slot indicated in the PDCCH format according to the time slot format in the PDCCH is And the number N of time slots indicated by the time slot format
  • the step of determining the time slots occupied by the base station in each spatial direction may include: in the M spatial directions, the time slots indicated according to the time slot format are The starting position in the PDCCH and the number N of slots indicated by the slot format determine the end position of the slot indicated by the slot format in each spatial direction, thereby determining the base station in each spatial direction Occupied time slot.
  • the slot format indication index may be a slot format indication index in M spatial directions.
  • FIG. 6 is a schematic diagram of another working scenario of indicating a starting position of a time slot in a PDCCH indicated by a time slot format in the embodiment of the present invention.
  • high-layer signaling may be used to indicate the starting position of the time slot in the PDCCH indicated by the slot format in various spatial directions, and the UE may only determine according to the starting position End position in each spatial direction.
  • the UE determines the ending position B (C, E) according to the starting position A (B, D) and the number N of slots indicated by the slot format, thereby determining the base station Time slots occupied in various spatial directions.
  • the UE may determine only the end position of the time slot indicated by the time slot format in each spatial direction according to the start position of the time slot indicated by the time slot format in each spatial direction, which is helpful Improve computing efficiency.
  • the UE may adopt various schemes to determine the time slots occupied by the base station in various spatial directions, thereby helping users to select according to specific situations and improving user convenience.
  • the method for determining the occupied time slot may further include: determining one or more of the following frequency domain resources of the signal as the frequency domain resources occupied by the base station in various spatial directions: the PDCCH, all The PDSCH scheduled by the PDCCH and the indicator signal.
  • the indication signal may be a downlink reference signal or SSB signal.
  • the UE can determine the sub-band information occupied by the downlink channel by using the received downlink signal and/or channel and using its frequency domain resource as the frequency domain resource occupied by the base station in various spatial directions without DCI2- 0 additional instructions.
  • the subbands in which all downlink reference signals and/or channels are located are the subbands occupied by all downlink channels, and the UE may combine DCI format 2 The time domain channel occupancy information and the subband (frequency domain) channel occupancy information notified in -0, to obtain the time frequency channel occupancy.
  • the subbands where all PDCCHs are located are the subbands occupied by all downlink channels, and the UE can combine the time domain channels notified in DCI format 2-0 The occupancy information and the channel occupancy information of this subband (frequency domain) obtain the channel occupancy in the time-frequency domain.
  • the subbands where all PDSCHs are located are the subbands occupied by all downlink channels, and the UE can combine the time domain notified in the DCI format 2-0
  • the channel occupancy information and this sub-band (frequency domain) channel occupancy information obtain the time-frequency domain channel occupancy.
  • the subbands in which all indicator signals are located are the subbands occupied by all downlink channels.
  • the UE may combine the notifications in DCI format 2-0.
  • the time-domain channel occupancy information and this sub-band (frequency domain) channel occupancy information obtain the time-frequency domain channel occupancy.
  • the UE can implicitly obtain the sub-band information occupied by the downlink channel through the received downlink signal and/or channel without additional indication of DCI2-0, which helps to save signaling overhead.
  • the UE by setting the number M of the spatial directions sent by the base station and a plurality of indication signals sent from the M spatial directions, the UE can determine the M spatial directions according to the indication signals, and then determine the The time slots occupied by the base station in various spatial directions are compared with the prior art where the UE cannot know the beam direction of the channel occupied by the base station. With the solution of the embodiment of the present invention, the UE can more effectively share channels with the base station.
  • FIG. 7 is a schematic structural diagram of a device for determining an occupied time slot in an embodiment of the present invention.
  • the apparatus for determining the occupied time slot may include:
  • the index receiving module 71 is adapted to receive the slot format indication index and the number N of time slots indicated by the slot format from the base station through the PDCCH, and determine the time slot indicated by the slot format by using the slot format indication index The starting position in the PDCCH;
  • the indication signal receiving module 72 is adapted to receive the number M of spatial directions from the base station, different spatial directions have different spatial reception parameters, and receive multiple indication signals transmitted from the M spatial directions from the base station, each indication signal corresponding to In a spatial direction and with spatial reception parameters;
  • the spatial direction determining module 73 is adapted to determine the M spatial directions according to the instruction signal
  • the time slot determining module 74 is adapted to respectively, in the M spatial directions, the starting position of the time slot indicated in the time slot format in the PDCCH and the number N of time slots indicated in the time slot format, Determine the time slots occupied by the base station in various spatial directions; where M is a positive integer and N is a positive integer.
  • the time slot format indication index is a time slot format indication index in a single spatial direction
  • the time slot determination module may include: a first spatial time slot determination submodule, adapted to be in the first spatial direction according to The starting position of the time slot indicated by the time slot format in the PDCCH and the number N of time slots indicated by the time slot format determine the end position of the time slot indicated by the time slot format in the first spatial direction; second The spatial time slot determination submodule is adapted to end the time slot indicated by the time slot format in the first spatial direction in the second spatial direction as the time slot format indicated in the second spatial direction The starting position of the slot in the PDCCH, and according to the number N of the slots indicated by the slot format, determine the end position of the slot indicated by the slot format in the second spatial direction; the Mth space slot is determined
  • the submodule is adapted to sequentially, in the Mth space direction, the end position of the time slot indicated by the time slot format in the M-1th space direction is the time slot indicated by the time slot format in the Mth space
  • the time slot format indication index is a time slot format indication index in M spatial directions
  • the time slot determination module may include: a multi-space time slot determination submodule, adapted to be in the M spatial directions , Determine the end of the time slot indicated by the time slot format in each spatial direction according to the starting position of the time slot indicated by the time slot format in the PDCCH and the number N of time slots indicated by the time slot format Location to determine the time slots occupied by the base station in various spatial directions.
  • the indication signal may include: a downlink reference signal or an SSB signal.
  • the apparatus for determining the occupied time slot may further include: a frequency domain resource determination module adapted to determine frequency domain resources of one or more of the following signals as the frequency occupied by the base station in various spatial directions Domain resources: the PDCCH, the PDSCH scheduled by the PDCCH, and the indicator signal.
  • a frequency domain resource determination module adapted to determine frequency domain resources of one or more of the following signals as the frequency occupied by the base station in various spatial directions Domain resources: the PDCCH, the PDSCH scheduled by the PDCCH, and the indicator signal.
  • the spatial direction determination module may include: a first correspondence determination submodule adapted to receive high-level signaling from the base station, the high-level signaling indicating the correspondence between each indication signal and the spatial direction; first The spatial direction determination submodule is adapted to determine the M spatial directions according to the indication signal and the corresponding relationship.
  • the spatial direction determination module may include: a second correspondence determination submodule adapted to receive high-level signaling from the base station, the high-level signaling indicating that each indication signal has a one-to-one correspondence with the spatial direction;
  • the second spatial direction determination submodule is adapted to determine the M spatial directions according to the indication signal and the one-to-one correspondence.
  • An embodiment of the present invention further provides a storage medium on which computer instructions are stored, and when the computer instructions are executed, the steps of the method for determining occupied slots shown in FIGS. 1 to 6 described above are executed.
  • the storage medium may be a computer-readable storage medium, for example, it may include a non-volatile memory (non-volatile) or a non-transitory (non-transitory) memory, and may also include an optical disk, a mechanical hard disk, a solid-state hard disk, and the like.
  • An embodiment of the present invention further provides a user terminal, including a memory and a processor, the memory stores computer instructions capable of running on the processor, and the processor executes the computer instruction when executing the above-mentioned FIG. 1 To the steps shown in FIG. 6 regarding the determination method of the occupied time slot.
  • the terminal includes but is not limited to terminal devices such as mobile phones, computers, and tablet computers.

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Abstract

一种占有时隙的确定方法及装置、存储介质、用户终端，所述方法包括：通过PDCCH从基站接收时隙格式指示索引以及时隙格式指示的时隙的个数N，并通过所述时隙格式指示索引确定所述时隙格式指示的时隙在所述PDCCH中的起始位置；从基站接收空间方向的个数M，以及从基站接收发送自M个空间方向的多个指示信号；根据所述指示信号，确定所述M个空间方向；在所述M个空间方向上，分别根据所述时隙格式指示的时隙在所述PDCCH中的起始位置以及时隙格式指示的时隙的个数N，确定所述基站在各个空间方向上占有的时隙。本发明方案可以使UE更有效地与基站进行信道共享。

Description

占有时隙的确定方法及装置、存储介质、用户终端
本申请要求于2018年12月18日提交中国专利局、申请号为201811552353.7、发明名称为“占有时隙的确定方法及装置、存储介质、用户终端”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术领域，尤其涉及一种占有时隙的确定方法及装置、存储介质、用户终端。
背景技术
第三代合作伙伴计划(The 3rd Generation Partnership Project，3GPP)标准组织将研究在非授权频谱上如何部署NR网络，从而达到公平有效地利用非授权频谱，提高5G新空口(New Radio，NR)系统的数据传输速率的目的。3GPP LTE系统采用先听后说(Listen-Before-Talk，LBT)过程实现非授权频谱中不同运营商及其它系统的共存。
由于信道接入可能采用不同优先级，导致不同的信道占用时长。3GPP会议中讨论决定通过物理下行控制信道(Physical Downlink Control Channel，PDCCH)发送公共时隙格式信道用于通知终端信道占有时间，包含信道占用时长，及下行及上行分配。
当演进型基站(Evolved Node B，gNB)采用某个方向的LBT并且接入信道后，可以使用户终端(User Equipment，UE)确定占有信道的时长，也即确定占有时隙，有助于使UE与所述基站进行信道共享，提高信道的占有率。
然而，NR中引入波束的发送方式为非全方位发位，往往使用某个方向的特定波束发送。在现有技术中，UE无法得知基站占用信道的波束方向，难以有效地与基站进行信道共享。
发明内容
本发明解决的技术问题是提供一种占有时隙的确定方法及装置、存储介质、用户终端，可以使UE更有效地与基站进行信道共享。
为解决上述技术问题，本发明实施例提供一种占有时隙的确定方法，包括以下步骤：通过PDCCH从基站接收时隙格式指示索引以及时隙格式指示的时隙的个数N，并通过所述时隙格式指示索引确定所述时隙格式指示的时隙在所述PDCCH中的起始位置；从基站接收空间方向的个数M，不同的空间方向具有不同的空间接收参数，以及从基站接收发送自M个空间方向的多个指示信号，每个指示信号对应于一个空间方向且具有空间接收参数；根据所述指示信号，确定所述M个空间方向；在所述M个空间方向上，分别根据所述时隙格式指示的时隙在所述PDCCH中的起始位置以及时隙格式指示的时隙的个数N，确定所述基站在各个空间方向上占有的时隙；其中，M为正整数，N为正整数。
可选的，所述时隙格式指示索引为单个空间方向上的时隙格式指示索引；在所述M个空间方向上，分别根据所述时隙格式指示的时隙在所述PDCCH中的起始位置以及时隙格式指示的时隙的个数N，确定所述基站在各个空间方向上占有的时隙包括：在第一空间方向上，根据所述时隙格式指示的时隙在PDCCH中的起始位置以及时隙格式指示的时隙的个数N，确定在第一空间方向上的时隙格式指示的时隙的结束位置；在第二空间方向上，以所述第一空间方向上的时隙格式指示的时隙的结束位置为第二空间方向上所述时隙格式指示的时隙在PDCCH中的起始位置，并根据所述时隙格式指示的时隙的个数N，确定在第二空间方向上的时隙格式指示的时隙的结束位置；依 次在第M空间方向上，以所述第M-1空间方向上的时隙格式指示的时隙的结束位置为第M空间方向上所述时隙格式指示的时隙在PDCCH中的起始位置，并根据所述时隙格式指示的时隙的个数N，确定在第M空间方向上的时隙格式指示的时隙的结束位置，从而确定所述基站在各个空间方向上占有的时隙。
可选的，所述时隙格式指示索引为M个空间方向上的时隙格式指示索引；在所述M个空间方向上，分别根据所述时隙格式指示的时隙在所述PDCCH中的起始位置以及时隙格式指示的时隙的个数N，确定所述基站在各个空间方向上占有的时隙包括：在所述M个空间方向上，根据所述时隙格式指示的时隙在所述PDCCH中的起始位置以及时隙格式指示的时隙的个数N，确定在每个空间方向上的时隙格式指示的时隙的结束位置，从而确定所述基站在各个空间方向上占有的时隙。
可选的，所述指示信号包括：下行参考信号或SSB信号。
可选的，所述的占有时隙的确定方法还包括：确定以下一种或多种信号的频域资源，以作为所述基站在各个空间方向上占有的频域资源：所述PDCCH、所述PDCCH调度的PDSCH以及所述指示信号。
可选的，根据所述指示信号，确定所述M个空间方向包括：从基站接收高层信令，所述高层信令指示每个指示信号与所述空间方向的对应关系；根据所述指示信号以及所述对应关系，确定所述M个空间方向。
可选的，所述指示信号的数量为M个，根据所述指示信号，确定所述M个空间方向包括：从基站接收高层信令，所述高层信令指示每个指示信号与所述空间方向具有一一对应关系；根据所述指示信号以及所述一一对应关系，确定所述M个空间方向。
为解决上述技术问题，本发明实施例提供一种占有时隙的确定装置，包括：索引接收模块，适于通过PDCCH从基站接收时隙格式指 示索引以及时隙格式指示的时隙的个数N，并通过所述时隙格式指示索引确定所述时隙格式指示的时隙在所述PDCCH中的起始位置；指示信号接收模块，适于从基站接收空间方向的个数M，不同的空间方向具有不同的空间接收参数，以及从基站接收发送自M个空间方向的多个指示信号，每个指示信号对应于一个空间方向且具有空间接收参数；空间方向确定模块，适于根据所述指示信号，确定所述M个空间方向；时隙确定模块，适于在所述M个空间方向上，分别根据所述时隙格式指示的时隙在所述PDCCH中的起始位置以及时隙格式指示的时隙的个数N，确定所述基站在各个空间方向上占有的时隙；其中，M为正整数，N为正整数。
为解决上述技术问题，本发明实施例提供一种存储介质，其上存储有计算机指令，所述计算机指令运行时执行上述占有时隙的确定方法的步骤。
为解决上述技术问题，本发明实施例提供一种用户终端，包括存储器和处理器，所述存储器上存储有能够在所述处理器上运行的计算机指令，所述处理器运行所述计算机指令时执行上述占有时隙的确定方法的步骤。
与现有技术相比，本发明实施例的技术方案具有以下有益效果：
在本发明实施例中，通过设置基站发送空间方向的个数M以及发送自M个空间方向的多个指示信号，可以使UE根据所述指示信号，确定所述M个空间方向，进而确定所述基站在各个空间方向上占有的时隙，相比于现有技术中UE无法得知基站占用信道的波束方向，采用本发明实施例的方案，UE可以更有效地与基站进行信道共享。
进一步，在本发明实施例中，UE可以采用多种方案确定基站在各个空间方向上占有的时隙，从而有助于用户根据具体情况选用，提高用户便利性。
进一步，在本发明实施例中，通过设置所述指示信号的数量为M个，且所述高层信令指示每个指示信号与所述空间方向具有一一对应关系，有助于使UE更准确地确定基站占用信道的波束方向，进一步提高与基站进行信道共享的有效性。
附图说明
图1是本发明实施例中一种占有时隙的确定方法的流程图；
图2是图1中步骤S13的一种具体实施方式的流程图；
图3是图1中步骤S13的另一种具体实施方式的流程图；
图4是图1中步骤S14的一种具体实施方式的流程图；
图5是本发明实施例中一种对时隙格式指示的时隙在PDCCH中的起始位置进行指示的工作场景示意图；
图6是本发明实施例中另一种对时隙格式指示的时隙在PDCCH中的起始位置进行指示的工作场景示意图；
图7是本发明实施例中一种占有时隙的确定装置的结构示意图。
具体实施方式
在现有技术中，当gNB采用某个方向的LBT并且接入信道后，可以使UE确定占有信道的时长，也即确定占有时隙，有助于使UE与所述基站进行信道共享，提高信道的占有率。
具体地，在3GPP NR系统中，在时域长度为10ms的无线帧内，每个无线帧被分为10个同样大小的长度为1ms的子帧，由子载波间隔不同每个子帧可包含多个时隙。每个时隙由一定数量的符号构成，且符号个数由循环前缀(Cyclic Prefix，CP)类型决定。
与LTE的特殊子帧结构为固定10种下行、GP和上行符号个数 相比，NR中引入时隙格式(Slot Format，SF)，包含某时隙中下行、灵活(flexible，用X表示)和上行符号个数。SF可以包含三种配置方式，分别为半静态小区级无线资源控制(Radio Resource Control，RRC)信令配置方式，UE专用RRC信令配置方式，以及动态时隙格式信息(Dynamic SFI)配置方式。
其中，所述动态时隙格式信息配置方式为使用PDCCH动态将时隙格式指示(Slot Format Indication，SFI)信息发送给一组UE，所述下行控制信息(Downlink Control Information，DCI)格式称为DCI格式2-0。PDCCH上承载的SFI信息可以指示一个或多个载波上一个或多个时隙(Slot)的格式，称为时隙格式组合集，时隙格式组合集在DCI内的位置通过高层信令配置。从而在UE收到时隙格式组合集后，获得索引信息且索引指向一个UE专用表格，可以获知时隙中哪些符号是“上行(Uplink，UL)”，哪些是“下行(Downlink，DL)”，哪些是'flexible'。其中，上述UE专用表格可以是由“单个时隙格式”表格中配置及组合而成。“单个时隙格式”表格包含NR中所有可以支持的时隙格式(少于256种)。
3GPP LTE系统采用LBT过程实现非授权频谱中不同运营商及其它系统的共存。其中，LBT过程即在非授权频谱中节点在传输数据前先通过明确信道评估(Clear Channel Assessment，CCA)判断当前信道(以20MHz为单位)是否可用。
进一步地，任何LBT过程均包含能量检测(Energy Detection)决定信道是否被占用。一些地区法规规定一个能量检测门限(Energy Detection Threshold)，若节点接收能量高于此门限则认为信道忙。辅助授权接入(Licensed-assisted Access Using LTE，LAA-LTE)下行传输中支持两种信道接入过程，当需要发送上行物理共享信道(Physical Uplink Shared Channel，PUSCH)/物理下行控制信道(Physical Downlink Control Channel，PDCCH)/增强物理下行控制信道(Enhanced Physical Downlink Control Channel，EPDCCH)的信道接 入过程(也称为Cat 4信道接入)，和需要发送发现参考信号的信道接入过程(也称为Cat 2信道接入)；同样的，LAA上行传输也支持这两种信道接入过程，称为Type 1信道接入和Type 2信道接入。
其中，Type 1信道接入是基于Cat 4的信道接入，Type 2是基于固定时间长度(Cat 2)的信道接入(传输之前至少25us的LBT)。
Type 1过程：在推迟持续时间(Defer duration T d)时间内检测信道空闲，且Step 4中N的为0而且N随着信道状态而增加(Slot duration)，按下述步骤进行：
1)N＝N init,其中N init为0～CW p的随机数；
2)若N>0且eNB减少计数器值，即N＝N-1；
3)检测长度为额外时隙持续时间(an additional slot duration)的信道状态，若此additional slot duration空闲，则执行step 4，否则执行step 5；
4)若N＝0停止，否则执行step 2；
5)检测长度为额外延迟持续时间(an additional defer duration T d)的信道状态；
6)若上述additional defer duration T d中信道空闲，则执行step 2，否则执行step 5。
其中，采用上述信道接入过程，会根据不同信道接入优先级而要求不同的最大信道占用时间(Maximum Channel Occupy Time,MCOT)即下表中的T mcot,p，表示最大可占用的信道时间。
表1
Figure PCTCN2019118756-appb-000001
Figure PCTCN2019118756-appb-000002
Type 2过程:至少检测信道T drs＝25us且平均能量低于X Thresh，且传输时间少于1ms，可以在非授权小区传输的信道上发下行或上行数据。
可见，由于信道接入可能采用不同优先级，导致不同的信道占用时长。3GPP会议中讨论决定通过PDCCH发送公共时隙格式信道用于通知终端信道占有时间，包含信道占用时长，及下行及上行分配。
本发明的发明人经过研究发现，在NR中，引入波束的发送方式为非全方位发位，往往使用某个方向的特定波束发送。在现有技术中，UE无法得知基站占用信道的波束方向，难以有效地与基站进行信道共享。
具体地，NR中引入波束的发送方式，即非全方位发位，而是使用某个方向的特定波束发送。更具体地，为了支持波束发送，NR中有波束管理，波束指示，波束恢复等等过程。其中协议规定了波束指示采用传输配置指示(Transmission Configuration Indication，TCI)指示下行传输的特性，如多普勒频移，多普勒扩展，平均时延，时延扩展，空间接收参数(波束)。UE可以配置最多M个TCI状态(TCI-State)指示PDCCH调度PDSCH传输状态，M取决于UE能力。每个TCI-State包含PDSCH DMRS与一个或两个参考信号的准共址(Quasi co-location，QCL)关系。PDCCH解调参考信号(Demodulation Reference Signal，DMRS)符号与参考信号的准共址类型通过高层信令配置然后MAC层信令激活。而信道状态信息参考 信号(Channel State Information Reference Signal,CSI-RS)可以配置与CSI-RS或单边带(Single Side Band，SSB)信号的准共址类型。
其中，共址类型可以包括下述几种：
-'QCL-TypeA':{多普勒频移Doppler shift,多普勒扩展Doppler spread,平均时延average delay,时延扩展delay spread}
-'QCL-TypeB':{多普勒频移Doppler shift,多普勒扩展Doppler spread}
-'QCL-TypeC':{多普勒频移Doppler shift,多普勒扩展average delay}
-'QCL-TypeD':{空间接收参数Spatial Rx parameter}
而在上行信道或信号传输中，通过配置或指示空间相关信息(Spatial Relation Info)告诉UE应该采用的上行波束方向。如周期探测参考信号(Sounding reference signal，SRS)的空间相关信息包含SSB索引，即UE发送SRS采用与接收SSB相同的空间传输滤波器；若包含CSI-RS索引，即UE发送SRS采用与接收CSI-RS相同的空间传输滤波器；若包含SRS索引则UE发送SRS采用与发送参考SRS相同的空间传输滤波器。
本发明的发明人经过研究后进一步发现，在非授权频谱中，当基站采用某个方向的LBT并且接入信道后，除了通知终端占有信道时长，还需要通知占用信道的波束方向，从而有效的与终端进行信道共享，提高信道的占有率，提升系统性能。
在本发明实施例中，通过设置基站发送空间方向的个数M以及发送自M个空间方向的多个指示信号，可以使UE根据所述指示信号，确定所述M个空间方向，进而确定所述基站在各个空间方向上占有的时隙，相比于现有技术中UE无法得知基站占用信道的波束方向，采用本发明实施例的方案，UE可以更有效地与基站进行信道共享。
为使本发明的上述目的、特征和有益效果能够更为明显易懂，下面结合附图对本发明的具体实施例做详细的说明。
参照图1，图1是本发明实施例中一种占有时隙的确定方法的流程图。所述占有时隙的确定方法可以包括步骤S11至步骤S14：
步骤S11：通过PDCCH从基站接收时隙格式指示索引以及时隙格式指示的时隙的个数N，并通过所述时隙格式指示索引确定所述时隙格式指示的时隙在所述PDCCH中的起始位置；
步骤S12：从基站接收空间方向的个数M，不同的空间方向具有不同的空间接收参数，以及从基站接收发送自M个空间方向的多个指示信号，每个指示信号对应于一个空间方向且具有空间接收参数；
步骤S13：根据所述指示信号，确定所述M个空间方向；
步骤S14：在所述M个空间方向上，分别根据所述时隙格式指示的时隙在所述PDCCH中的起始位置以及时隙格式指示的时隙的个数N，确定所述基站在各个空间方向上占有的时隙。
其中，M为正整数，N为正整数。
在步骤S11的具体实施中，所述时隙格式指示索引以及个数N均是由基站配置的，进而UE从基站通过PDCCH接收。
具体地，所述动态时隙格式信息配置方式为基站使用PDCCH动态将时隙格式指示索引(SFI)信息发送给一组UE，所述DCI格式称为DCI格式2-0。
需要指出的是，UE接收所述SFI信息后，可以通过所述SFI信息确定所述时隙格式指示的时隙在所述PDCCH中的起始位置。在本发明实施例中，对于UE确定所述起始位置的具体实施方式不做限制。
进一步地，UE根据所述起始位置以及时隙格式指示的时隙的个数N，可以确定所述时隙格式指示的时隙在所述PDCCH中的结束位置。
在步骤S12的具体实施中，UE从基站接收空间方向的个数M，以及从基站接收发送自M个空间方向的多个指示信号。
其中，不同的空间方向具有不同的空间接收参数，每个指示信号对应于一个空间方向且具有空间接收参数。
具体地，信道占用时间内允许进行的下行和上行传输，具有相同的空间特性，也即具有相同的空间接收参数。
更具体而言，下行传输时间内只允许进行特定TCI类型D的下行传输，UE只如需要接收具有此QCL-TypeD的下行信号或信道。UE不接收具有不同QCL-TypeD的下行信号或信道。
上行传输时间内只允许进行特定空间相关信息的上行传输，UE只能在上行时间内发送具有此空间相关信息的上行信号或信道。UE不能在上行时间内发送其它空间相关信息的上行信号或信道。
进一步地，所述指示信号可以包括：下行参考信号或SSB信号。
其中，所述下行参考信号例如可以包括CSI-RS信号。
进一步地，以所述M为2为例，则UE从基站接收的空间方向的数量为2个，以及从基站接收发送自2个空间方向的CSI-RS 1信号以及CSI-RS 2信号。
在步骤S13的具体实施中，UE可以根据所述指示信号，确定所述M个空间方向。
参照图2，图2是图1中步骤S13的一种具体实施方式的流程图。所述根据所述指示信号，确定所述M个空间方向的步骤可以包括步骤S21至步骤S22，以下对各个步骤进行说明。
在步骤S21中，UE可以从基站接收高层信令，所述高层信令指示每个指示信号与所述空间方向的对应关系；
其中，所述高层信令例如可以为RRC信令。
在步骤S22中，UE可以根据所述指示信号以及所述对应关系，确定所述M个空间方向。
需要指出的是，在本发明实施例中，可以不对所述指示信号的数量进行限制，例如可以存在多个指示信号对应于一个空间方向的情况，从而降低对指示信号的限制。
在本发明实施例中，通过设置所述高层信令指示每个指示信号与所述空间方向具有对应关系，有助于使UE准确地确定基站占用信道的波束方向，提高与基站进行信道共享的有效性。
参照图3，图3是图1中步骤S13的另一种具体实施方式的流程图。
所述根据所述指示信号，确定所述M个空间方向的步骤可以包括步骤S31至步骤S32，以下对各个步骤进行说明。
在步骤S31中，UE可以从基站接收高层信令，所述高层信令指示每个指示信号与所述空间方向具有一一对应关系；
其中，所述高层信令例如可以为RRC信令。
在步骤S32中，根据所述指示信号以及所述一一对应关系，确定所述M个空间方向。
在本发明实施例中，通过设置所述指示信号的数量为M个，且所述高层信令指示每个指示信号与所述空间方向具有一一对应关系，有助于使UE更准确地确定基站占用信道的波束方向，进一步提高与基站进行信道共享的有效性。
可以理解的是，相比于不对指示信号的数量进行限制的情况，通过设置所述指示信号的数量为M个，更容易指示以及确定每个指示信号与所述空间方向之间的对应关系，有助于节省高层信令的信令资源。
继续参照图1，在步骤S14的具体实施中，UE在所述M个空间 方向上，分别根据所述时隙格式指示的时隙在所述PDCCH中的起始位置以及时隙格式指示的时隙的个数N，确定所述基站在各个空间方向上占有的时隙。
在具体实施中，UE可以根据PDCCH承载的时隙格式指示索引，得到M组时隙格式组合集，每一组时隙格式组合集对应单一空间方向的信号占用情况，UE可以判断出是否需要进行此方向的下行接收，及上行发送。
具体而言，如UE根据M个方向上的时隙格式指示索引得到2组时隙格式组合集，第一组为UE接收CSI-RS 1对应空间特性时的信号占用情况，UE可以判断出是否需要进行此方向的下行接收，及上行发送。
参照图4，图4是图1中步骤S14的一种具体实施方式的流程图。所述在所述M个空间方向上，分别根据所述时隙格式指示的时隙在所述PDCCH中的起始位置以及时隙格式指示的时隙的个数N，确定所述基站在各个空间方向上占有的时隙的步骤可以包括步骤S41至步骤S43，以下对各个步骤进行说明。
在步骤S41中，在第一空间方向上，根据所述时隙格式指示的时隙在PDCCH中的起始位置以及时隙格式指示的时隙的个数N，确定在第一空间方向上的时隙格式指示的时隙的结束位置。
在步骤S42中，在第二空间方向上，以所述第一空间方向上的时隙格式指示的时隙的结束位置为第二空间方向上所述时隙格式指示的时隙在PDCCH中的起始位置，并根据所述时隙格式指示的时隙的个数N，确定在第二空间方向上的时隙格式指示的时隙的结束位置。
在步骤S43中，依次在第M空间方向上，以所述第M-1空间方向上的时隙格式指示的时隙的结束位置为第M空间方向上所述时隙格式指示的时隙在PDCCH中的起始位置，并根据所述时隙格式指示的时隙的个数N，确定在第M空间方向上的时隙格式指示的时隙的 结束位置，从而确定所述基站在各个空间方向上占有的时隙。
其中，所述时隙格式指示索引可以为单个空间方向上的时隙格式指示索引。
进一步地，所述对时隙格式指示的时隙在PDCCH中的起始位置进行指示的步骤可以使采用高层信令指示的。
其中，所述高层信令例如可以为RRC信令。
在本发明实施例中，UE可根据第一空间方向上的时隙格式指示的时隙的起始位置，自行确定第一空间方向上的时隙格式指示的时隙的结束位置，进而依次确定每一空间方向上的时隙格式指示的时隙的起始位置以及结束位置，相比于基站通过信令向UE告知每一空间方向上的时隙格式指示的时隙的起始位置以及结束位置，有助于节省信令。
参照图5，图5是本发明实施例中一种对时隙格式指示的时隙在PDCCH中的起始位置进行指示的工作场景示意图。
如图5中的箭头所示，高层信令仅用于指示在第一空间方向上，所述时隙格式指示的时隙在PDCCH中的起始位置a，UE需要自行确定其他位置。
具体而言，在第一空间方向上，UE根据起始位置a以及时隙格式指示的时隙的个数N，确定结束位置b；进一步地，UE以所述位置b作为在第二空间方向上的起始位置b，根据位置b以及时隙格式指示的时隙的个数N，确定结束位置c；并依次对其他空间方向上的起始位置以及结束位置进行确认，直至在第M空间方向上，以所述第M-1空间方向上的时隙格式指示的时隙的结束位置为第M空间方向上所述时隙格式指示的时隙在PDCCH中的起始位置d，并根据所述时隙格式指示的时隙的个数N，确定在第M空间方向上的时隙格式指示的时隙的结束位置e。
在本发明实施例中，UE可根据第一空间方向上的时隙格式指示 的时隙的起始位置，自行确定第一空间方向上的时隙格式指示的时隙的结束位置，进而依次确定每一空间方向上的时隙格式指示的时隙的起始位置以及结束位置，相比于基站通过信令向UE告知每一空间方向上的时隙格式指示的时隙的起始位置以及结束位置，有助于节省信令。
在具体实施中，图1中步骤S14还可以具有另一种具体实施方式，在所述M个空间方向上，分别根据所述时隙格式指示的时隙在所述PDCCH中的起始位置以及时隙格式指示的时隙的个数N，确定所述基站在各个空间方向上占有的时隙的步骤可以包括：在所述M个空间方向上，根据所述时隙格式指示的时隙在所述PDCCH中的起始位置以及时隙格式指示的时隙的个数N，确定在每个空间方向上的时隙格式指示的时隙的结束位置，从而确定所述基站在各个空间方向上占有的时隙。
其中，所述时隙格式指示索引可以为M个空间方向上的时隙格式指示索引。
参照图6，图6是本发明实施例中另一种对时隙格式指示的时隙在PDCCH中的起始位置进行指示的工作场景示意图。
如图6中的箭头所示，高层信令可以用于指示在各个空间方向上，所述时隙格式指示的时隙在PDCCH中的起始位置，UE根据所述起始位置，可以仅确定各个空间方向上的结束位置。
具体而言，在每个空间方向上，UE根据起始位置A(B、D)以及时隙格式指示的时隙的个数N，确定结束位置B(C、E)，从而确定所述基站在各个空间方向上占有的时隙。
在本发明实施例中，UE可根据每个空间方向上的时隙格式指示的时隙的起始位置，仅确定每个空间方向上的时隙格式指示的时隙的结束位置，有助于提高运算效率。
在本发明实施例中，UE可以采用多种方案确定基站在各个空间 方向上占有的时隙，从而有助于用户根据具体情况选用，提高用户便利性。
进一步地，所述的占有时隙的确定方法还可以包括：确定以下一种或多种信号的频域资源，以作为所述基站在各个空间方向上占有的频域资源：所述PDCCH、所述PDCCH调度的PDSCH以及所述指示信号。其中，所述指示信号可以为下行参考信号或SSB信号。
具体地，UE通过接收的下行信号及或信道，且将其频域资源作为所述基站在各个空间方向上占有的频域资源，可以自行确定下行信道占用的子带信息，而不需要DCI2-0的额外指示。
更具体地，当UE监听到一个或多个PDCCH及或PDSCH及或下行参考信号时，所有下行参考信号及或信道所处于子带即为所有下行信道占用的子带，UE可以结合DCI格式2-0内通知的时域信道占用信息及此子带(频域)信道占用信息，得到时频域信道占用。
在一种具体实施方式中，当UE监听到一个或多个PDCCH时，所有PDCCH所处的子带即为所有下行信道占用的子带，UE可以结合DCI格式2-0内通知的时域信道占用信息及此子带(频域)信道占用信息，得到时频域信道占用。
在另一种具体实施方式中，当UE监听到一个或多个PDSCH时，所有PDSCH所处的子带即为所有下行信道占用的子带，UE可以结合DCI格式2-0内通知的时域信道占用信息及此子带(频域)信道占用信息，得到时频域信道占用。
在又一种具体实施方式中，当UE监听到一个或多个指示信号时，所有指示信号所处的子带即为所有下行信道占用的子带，UE可以结合DCI格式2-0内通知的时域信道占用信息及此子带(频域)信道占用信息，得到时频域信道占用。
在本发明实施例中，UE可以通过接收的下行信号及或信道隐式获得下行信道占用的子带信息，而不需要DCI2-0的额外指示，有助 于节约信令开销。
在本发明实施例中，通过设置基站发送空间方向的个数M以及发送自M个空间方向的多个指示信号，可以使UE根据所述指示信号，确定所述M个空间方向，进而确定所述基站在各个空间方向上占有的时隙，相比于现有技术中UE无法得知基站占用信道的波束方向，采用本发明实施例的方案，UE可以更有效地与基站进行信道共享。
参照图7，图7是本发明实施例中一种占有时隙的确定装置的结构示意图。所述占有时隙的确定装置可以包括：
索引接收模块71，适于通过PDCCH从基站接收时隙格式指示索引以及时隙格式指示的时隙的个数N，并通过所述时隙格式指示索引确定所述时隙格式指示的时隙在所述PDCCH中的起始位置；
指示信号接收模块72，适于从基站接收空间方向的个数M，不同的空间方向具有不同的空间接收参数，以及从基站接收发送自M个空间方向的多个指示信号，每个指示信号对应于一个空间方向且具有空间接收参数；
空间方向确定模块73，适于根据所述指示信号，确定所述M个空间方向；
时隙确定模块74，适于在所述M个空间方向上，分别根据所述时隙格式指示的时隙在所述PDCCH中的起始位置以及时隙格式指示的时隙的个数N，确定所述基站在各个空间方向上占有的时隙；其中，M为正整数，N为正整数。
进一步地，所述时隙格式指示索引为单个空间方向上的时隙格式指示索引，所述时隙确定模块可以包括：第一空间时隙确定子模块，适于在第一空间方向上，根据所述时隙格式指示的时隙在PDCCH中的起始位置以及时隙格式指示的时隙的个数N，确定在第一空间方向上的时隙格式指示的时隙的结束位置；第二空间时隙确定子模块，适 于在在第二空间方向上，以所述第一空间方向上的时隙格式指示的时隙的结束位置为第二空间方向上所述时隙格式指示的时隙在PDCCH中的起始位置，并根据所述时隙格式指示的时隙的个数N，确定在第二空间方向上的时隙格式指示的时隙的结束位置；第M空间时隙确定子模块，适于依次在第M空间方向上，以所述第M-1空间方向上的时隙格式指示的时隙的结束位置为第M空间方向上所述时隙格式指示的时隙在PDCCH中的起始位置，并根据所述时隙格式指示的时隙的个数N，确定在第M空间方向上的时隙格式指示的时隙的结束位置，从而确定所述基站在各个空间方向上占有的时隙。
进一步地，所述时隙格式指示索引为M个空间方向上的时隙格式指示索引，所述时隙确定模块可以包括：多空间时隙确定子模块，适于在所述M个空间方向上，根据所述时隙格式指示的时隙在所述PDCCH中的起始位置以及时隙格式指示的时隙的个数N，确定在每个空间方向上的时隙格式指示的时隙的结束位置，从而确定所述基站在各个空间方向上占有的时隙。
进一步地，所述指示信号可以包括：下行参考信号或SSB信号。
进一步地，所述的占有时隙的确定装置还可以包括：频域资源确定模块，适于确定以下一种或多种信号的频域资源，以作为所述基站在各个空间方向上占有的频域资源：所述PDCCH、所述PDCCH调度的PDSCH以及所述指示信号。
进一步地，所述空间方向确定模块可以包括：第一对应关系确定子模块，适于从基站接收高层信令，所述高层信令指示每个指示信号与所述空间方向的对应关系；第一空间方向确定子模块，适于根据所述指示信号以及所述对应关系，确定所述M个空间方向。
进一步地，所述空间方向确定模块可以包括：第二对应关系确定子模块，适于从基站接收高层信令，所述高层信令指示每个指示信号与所述空间方向具有一一对应关系；第二空间方向确定子模块，适于根据所述指示信号以及所述一一对应关系，确定所述M个空间方向。
关于该占有时隙的确定装置的原理、具体实现和有益效果请参照前文及图1至图6示出的关于占有时隙的确定方法的相关描述，此处不再赘述。
本发明实施例还提供了一种存储介质，其上存储有计算机指令，所述计算机指令运行时执行上述图1至图6示出的关于占有时隙的确定方法的步骤。所述存储介质可以是计算机可读存储介质，例如可以包括非挥发性存储器(non-volatile)或者非瞬态(non-transitory)存储器，还可以包括光盘、机械硬盘、固态硬盘等。
本发明实施例还提供了一种用户终端，包括存储器和处理器，所述存储器上存储有能够在所述处理器上运行的计算机指令，所述处理器运行所述计算机指令时执行上述图1至图6示出的关于占有时隙的确定方法的步骤。所述终端包括但不限于手机、计算机、平板电脑等终端设备。
虽然本发明披露如上，但本发明并非限定于此。任何本领域技术人员，在不脱离本发明的精神和范围内，均可作各种更动与修改，因此本发明的保护范围应当以权利要求所限定的范围为准。

Claims (10)

  1. 一种占有时隙的确定方法，其特征在于，包括以下步骤：
    通过PDCCH从基站接收时隙格式指示索引以及时隙格式指示的时隙的个数N，并通过所述时隙格式指示索引确定所述时隙格式指示的时隙在所述PDCCH中的起始位置；
    从基站接收空间方向的个数M，不同的空间方向具有不同的空间接收参数，以及从基站接收发送自M个空间方向的多个指示信号，每个指示信号对应于一个空间方向且具有空间接收参数；
    根据所述指示信号，确定所述M个空间方向；
    在所述M个空间方向上，分别根据所述时隙格式指示的时隙在所述PDCCH中的起始位置以及时隙格式指示的时隙的个数N，确定所述基站在各个空间方向上占有的时隙；
    其中，M为正整数，N为正整数。
  2. 根据权利要求1所述的占有时隙的确定方法，其特征在于，所述时隙格式指示索引为单个空间方向上的时隙格式指示索引；
    在所述M个空间方向上，分别根据所述时隙格式指示的时隙在所述PDCCH中的起始位置以及时隙格式指示的时隙的个数N，确定所述基站在各个空间方向上占有的时隙包括：
    在第一空间方向上，根据所述时隙格式指示的时隙在PDCCH中的起始位置以及时隙格式指示的时隙的个数N，确定在第一空间方向上的时隙格式指示的时隙的结束位置；
    在第二空间方向上，以所述第一空间方向上的时隙格式指示的时隙的结束位置为第二空间方向上所述时隙格式指示的时隙在PDCCH中的起始位置，并根据所述时隙格式指示的时隙的个数N，确定在第二空间方向上的时隙格式指示的时隙的结束位置；
    依次在第M空间方向上，以所述第M-1空间方向上的时隙格式指 示的时隙的结束位置为第M空间方向上所述时隙格式指示的时隙在PDCCH中的起始位置，并根据所述时隙格式指示的时隙的个数N，确定在第M空间方向上的时隙格式指示的时隙的结束位置，从而确定所述基站在各个空间方向上占有的时隙。
  3. 根据权利要求1所述的占有时隙的确定方法，其特征在于，所述时隙格式指示索引为M个空间方向上的时隙格式指示索引；
    在所述M个空间方向上，分别根据所述时隙格式指示的时隙在所述PDCCH中的起始位置以及时隙格式指示的时隙的个数N，确定所述基站在各个空间方向上占有的时隙包括：
    在所述M个空间方向上，根据所述时隙格式指示的时隙在所述PDCCH中的起始位置以及时隙格式指示的时隙的个数N，确定在每个空间方向上的时隙格式指示的时隙的结束位置，从而确定所述基站在各个空间方向上占有的时隙。
  4. 根据权利要求1所述的占有时隙的确定方法，其特征在于，所述指示信号包括：下行参考信号或SSB信号。
  5. 根据权利要求1所述的占有时隙的确定方法，其特征在于，还包括：
    确定以下一种或多种信号的频域资源，以作为所述基站在各个空间方向上占有的频域资源：
    所述PDCCH、所述PDCCH调度的PDSCH以及所述指示信号。
  6. 根据权利要求1所述的占有时隙的确定方法，其特征在于，根据所述指示信号，确定所述M个空间方向包括：
    从基站接收高层信令，所述高层信令指示每个指示信号与所述空间方向的对应关系；
    根据所述指示信号以及所述对应关系，确定所述M个空间方向。
  7. 根据权利要求1所述的占有时隙的确定方法，其特征在于，所述 指示信号的数量为M个，根据所述指示信号，确定所述M个空间方向包括：
    从基站接收高层信令，所述高层信令指示每个指示信号与所述空间方向具有一一对应关系；
    根据所述指示信号以及所述一一对应关系，确定所述M个空间方向。
  8. 一种占有时隙的确定装置，其特征在于，包括：
    索引接收模块，适于通过PDCCH从基站接收时隙格式指示索引以及时隙格式指示的时隙的个数N，并通过所述时隙格式指示索引确定所述时隙格式指示的时隙在所述PDCCH中的起始位置；
    指示信号接收模块，适于从基站接收空间方向的个数M，不同的空间方向具有不同的空间接收参数，以及从基站接收发送自M个空间方向的多个指示信号，每个指示信号对应于一个空间方向且具有空间接收参数；
    空间方向确定模块，适于根据所述指示信号，确定所述M个空间方向；
    时隙确定模块，适于在所述M个空间方向上，分别根据所述时隙格式指示的时隙在所述PDCCH中的起始位置以及时隙格式指示的时隙的个数N，确定所述基站在各个空间方向上占有的时隙；
    其中，M为正整数，N为正整数。
  9. 一种存储介质，其上存储有计算机指令，其特征在于，所述计算机指令运行时执行权利要求1至7任一项所述占有时隙的确定方法的步骤。
  10. 一种用户终端，包括存储器和处理器，所述存储器上存储有能够在所述处理器上运行的计算机指令，其特征在于，所述处理器运行所述计算机指令时执行权利要求1至7任一项所述占有时隙的确定方法 的步骤。
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