WO2019184565A1 - 物理下行共享信道接收及其时域资源指示方法、装置、存储介质、基站、终端 - Google Patents

物理下行共享信道接收及其时域资源指示方法、装置、存储介质、基站、终端 Download PDF

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Publication number
WO2019184565A1
WO2019184565A1 PCT/CN2019/072668 CN2019072668W WO2019184565A1 WO 2019184565 A1 WO2019184565 A1 WO 2019184565A1 CN 2019072668 W CN2019072668 W CN 2019072668W WO 2019184565 A1 WO2019184565 A1 WO 2019184565A1
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Prior art keywords
time domain
shared channel
row index
physical downlink
downlink shared
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PCT/CN2019/072668
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English (en)
French (fr)
Inventor
周欢
黄甦
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北京展讯高科通信技术有限公司
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Priority to US16/321,408 priority Critical patent/US11729760B2/en
Publication of WO2019184565A1 publication Critical patent/WO2019184565A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • 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
    • H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1469—Two-way operation using the same type of signal, i.e. duplex using time-sharing
    • 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
    • H04W72/20—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
    • H04W72/30—Resource management for broadcast services

Definitions

  • the present disclosure relates to the field of communications technologies, and in particular, to a physical downlink shared channel receiving and a time domain resource indicating method, apparatus, storage medium, base station, and terminal.
  • each radio frame is included in 10 radio frames with a time domain length of 10 ms.
  • a sub-frame of size 1 ms in length.
  • Each subframe includes a plurality of time slots.
  • Each time slot consists of a certain number of symbols, and the number of symbols is determined by the type of cyclic prefix (CP).
  • CP cyclic prefix
  • the format of Downlink Control Information (DCI) for scheduling the Physical Downlink Shared Channel (PDSCH) in the NR includes the format 1_0 and the format 1_1.
  • the DCI format includes a time domain resource assignment, which is used to notify a user equipment (User Equipment, UE) of a PDSCH time domain resource location.
  • the DCI may indicate a row index pointing to the UE time domain specific table, provide Orthogonal Frequency Division Multiplexing (OFDM) symbols for PDSCH transmission, including the starting OFDM symbol and the allocated OFDM symbol length, and transmit the PDSCH.
  • the UE time domain specific table used by DCI format 1-1 can be configured by higher layer signaling.
  • the UE time domain-specific tables used in DCI format 1-0 are not configurable, resulting in limited scheduling resources available to the PDSCH.
  • the technical problem addressed by the present disclosure is how to achieve the flexibility of PDSCH scheduling.
  • an embodiment of the present disclosure provides a time domain resource indication method for a physical downlink shared channel, where the time domain resource indication method of the physical downlink shared channel includes determining a physical downlink sharing according to a symbol position of a pre-demodulation reference signal.
  • the start symbol position of the time domain resource of the channel; the row index is determined in the preset time domain table according to the start symbol position; and the row index is carried in the downlink control information and sent to the user equipment.
  • the row index in the preset time domain table indicates a plurality of different starting locations and corresponding symbol lengths, and the plurality of different starting locations correspond to the front A plurality of configurable symbol positions of the demodulation reference signal.
  • the user equipment detects the downlink control information outside a set of control resources configured by a physical broadcast channel.
  • the user equipment detects the downlink control information in a control resource set, and the control resource set is time division multiplexed with a transmission resource of the physical downlink shared channel.
  • the starting symbol position indicated by the row index is 8, and the symbol length occupied by the time domain resource is 4.
  • the symbol position of the pre-demodulation reference signal is mapped according to a configuration of a physical broadcast channel.
  • the start symbol position indicated by the row index is 8, 9, or 10, and the symbol length occupied by the time domain resource is 4; or the line index indicates the The start symbol position is 7, and the time domain resource occupies a symbol length of 7.
  • the determining, according to the starting symbol position, the row index in the preset time domain table includes: according to the starting symbol location, and a symbol length required by the time domain resource Determine the row index.
  • the embodiment of the present disclosure further discloses a physical downlink shared channel receiving method, where the physical downlink shared channel receiving method includes:
  • the row index in the preset time domain table indicates a plurality of different starting locations and corresponding symbol lengths, and the plurality of different starting locations correspond to the front A plurality of configurable symbol positions of the demodulation reference signal.
  • the receiving the row index carried in the downlink control information includes: detecting and receiving the downlink control information outside a control resource set configured by the physical broadcast channel.
  • the receiving the row index carried in the downlink control information includes: detecting, in the control resource set, the downlink control information, the control resource set, and the transmission resource of the physical downlink shared channel Time division multiplexing.
  • the starting symbol position indicated by the row index is 8, and the symbol length occupied by the time domain resource is 4.
  • the symbol position of the pre-demodulation reference signal is mapped according to a configuration of a physical broadcast channel.
  • the receiving, by the row index, the row index in the downlink control information includes: the starting symbol location indicated by the row index is 8, 9, or 10, and the symbol occupied by the time domain resource The length is 4; or the starting symbol position indicated by the row index is 7, and the symbol length occupied by the time domain resource is 7.
  • the embodiment of the present disclosure further discloses a time domain resource indication apparatus for a physical downlink shared channel, including: a start symbol position determining module, configured to determine a time domain for transmitting a physical downlink shared channel according to a symbol position of a pre-demodulation reference signal. a start symbol position of the resource; the row index determining module is adapted to determine the row index in the preset time domain table according to the start symbol position; the row index sending module is adapted to carry the row index in the downlink control information Sent to the user device.
  • the row index in the preset time domain table indicates a plurality of different starting locations and corresponding symbol lengths, and the plurality of different starting locations correspond to the front A plurality of configurable symbol positions of the demodulation reference signal.
  • the user equipment detects the downlink control information outside a set of control resources configured by a physical broadcast channel.
  • the user equipment detects the downlink control information in a control resource set, and the control resource set is time division multiplexed with a transmission resource of the physical downlink shared channel.
  • the starting symbol position indicated by the row index is 8, and the symbol length occupied by the time domain resource is 4.
  • the symbol position of the pre-demodulation reference signal is mapped according to a configuration of a physical broadcast channel.
  • the start symbol position indicated by the row index is 8, 9, or 10, and the symbol length occupied by the time domain resource is 4; or the line index indicates the The start symbol position is 7, and the time domain resource occupies a symbol length of 7.
  • the determining, according to the starting symbol position, the row index in the preset time domain table includes: according to the starting symbol location, and a symbol length required by the time domain resource Determine the row index.
  • the embodiment of the present disclosure further discloses a physical downlink shared channel receiving apparatus, including: a row index receiving module, configured to receive a pre-demodulation reference signal and a row index carried in the downlink control information; and a time domain resource determining module Determining, according to the row index and the symbol position of the pre-demodulation reference signal, a starting symbol position and a symbol length of a time domain resource for transmitting a physical downlink shared channel in a preset time domain table; a physical downlink shared channel solution And a modulation module, configured to demodulate the physical downlink shared channel according to a start symbol position and a symbol length of the time domain resource.
  • a row index receiving module configured to receive a pre-demodulation reference signal and a row index carried in the downlink control information
  • a time domain resource determining module Determining, according to the row index and the symbol position of the pre-demodulation reference signal, a starting symbol position and a symbol length of a time domain resource for transmitting a physical downlink shared
  • the row index in the preset time domain table indicates a plurality of different starting locations and corresponding symbol lengths, and the plurality of different starting locations correspond to the front A plurality of configurable symbol positions of the demodulation reference signal.
  • the row index receiving module detects and receives the downlink control information outside a set of control resources configured by a physical broadcast channel.
  • the row index receiving module detects the downlink control information in a control resource set, where the control resource set is time division multiplexed with a transmission resource of the physical downlink shared channel.
  • the start symbol position indicated by the row index is 8, and the time domain resource occupies a symbol length of 4.
  • the symbol position of the pre-demodulation reference signal is mapped according to a configuration of a physical broadcast channel.
  • the start symbol position indicated by the row index is 8, 9, or 10, and the symbol length occupied by the time domain resource is 4; or the line index indicates the The start symbol position is 7, and the time domain resource occupies a symbol length of 7.
  • the embodiment of the present disclosure further discloses a storage medium, where the computer instruction is stored, the step of executing the time domain resource indication method of the physical downlink shared channel when the computer instruction is running, or the physical downlink shared channel receiving method A step of.
  • Embodiments of the present disclosure also disclose a base station including a memory and a processor, the memory storing computer instructions executable on the processor, the processor executing the physical downlink when the computer instruction is executed The step of the time domain resource indication method of the shared channel.
  • Embodiments of the present disclosure also disclose a terminal including a memory and a processor, the memory storing computer instructions executable on the processor, the processor executing the physical downlink when the computer instruction is executed The steps of the shared channel receiving method.
  • the technical solution of the present disclosure determines a start symbol position of a time domain resource for transmitting a physical downlink shared channel according to a symbol position of the pre-demodulation reference signal; determining a row index in a preset time domain table according to at least the start symbol position; The row index is carried in the downlink control information and sent to the user equipment.
  • the row index in the preset time domain table indicates a plurality of different starting positions, and the plurality of different starting positions correspond to the plurality of configurable symbol positions of the pre-demodulation reference signal, thereby With fewer row indexes, more starting symbol positions can be indicated; further, in the case where the total number of row indexes in the preset table is limited, the saved row index can be used for configuration of more other mapping types. The flexibility of PDSCH scheduling is achieved.
  • the user equipment detects the downlink control information in a control resource set, and the control resource set is time-division multiplexed with a transmission resource of the physical downlink shared channel.
  • the start symbol position indicated by the row index is 8, and the symbol length occupied by the time domain resource is 4.
  • the mapping type of the PDSCH is Type B (Type B), that is, the symbol position of the pre-demodulation reference signal is at the first symbol position of the time domain resource.
  • the time domain resource start symbol position is 8 and the occupied symbol length is 4, Therefore, when the starting position of the control resource set is the symbol 7 and the length is 1, the resource scheduling of the PDSCH can be completed in the same time slot to meet the user requirements.
  • the start symbol position indicated by the row index is 8, 9, or 10, and the symbol length occupied by the time domain resource is 4; or the start symbol position indicated by the row index is 7
  • the time domain resource occupies a symbol length of 7.
  • the mapping type of the PDSCH is type B, and when the user equipment detects the downlink control information outside the control resource set configured by the physical broadcast channel, the start time symbol position of the time domain resource may be 8, 9 or 10, the configuration of the occupied symbol length is 4; and, the time domain resource start symbol position is 7, and the occupied symbol length is 7. Therefore, more configurations of resource scheduling of the PDSCH under the mapping type B are implemented, and the flexibility of PDSCH scheduling is further improved.
  • FIG. 1 is a flowchart of a method for indicating a time domain resource of a physical downlink shared channel according to an embodiment of the present disclosure
  • FIG. 2 is a flowchart of a method for receiving a physical downlink shared channel according to an embodiment of the present disclosure
  • FIG. 3 is a schematic structural diagram of a time domain resource indication apparatus of a physical downlink shared channel according to an embodiment of the present disclosure
  • FIG. 4 is a schematic structural diagram of a physical downlink shared channel receiving apparatus according to an embodiment of the present disclosure.
  • the UE time domain-specific tables used in DCI format 1-0 are not configurable, resulting in limited scheduling resources available to the PDSCH.
  • the pre-DMRS is mapped according to a location configured in a physical broadcast channel (PBCH), such as symbol 2 and symbol 3.
  • PBCH physical broadcast channel
  • the mapping type is Type B, the pre-DMRS is in the first symbol position of the time domain resource of the PDSCH.
  • mapping type there are more resource configuration options with the mapping type being Type A. Only a limited number of resource configuration options with the mapping type being Type B make the PDSCH scheduling inflexible. There are still some time domain resource requirements that are not met.
  • the PDCCH is in the control resource set CORESET0 and the pattern 1 is used, that is, the transmission resources of the CORESET0 and the PDSCH are time-division multiplexed, and the PDSCH mapping type B cannot be supported, the start symbol is 8, and the length is 4 Domain resource option; when DCI format 1-0 is detected in non-CORESET0, PDSCH mapping type B cannot be supported, the start symbol is 8/9/10, and the time domain resource option of length is 4.
  • each row index in the preset time domain table indicates a plurality of different starting positions, and the plurality of different starting positions correspond to the plurality of configurable symbol positions of the pre-demodulation reference signal,
  • fewer row indices can be used to indicate more starting symbol positions; further, in the case where the total number of row indexes in the preset table is limited, the saved row index can be used for more mapping type configurations.
  • the flexibility of PDSCH scheduling is achieved.
  • FIG. 1 is a flowchart of a method for indicating a time domain resource of a physical downlink shared channel according to an embodiment of the present disclosure.
  • the time domain resource indication method of the physical downlink shared channel shown in FIG. 1 can be used by the base station side, for example, by a base station, and the method can include the following steps:
  • Step S101 Determine, according to a symbol position of the pre-demodulation reference signal, a start symbol position of a time domain resource that transmits the physical downlink shared channel.
  • Step S102 determining a row index in the preset time domain table according to at least the starting symbol position
  • Step S103 The row index is carried in the downlink control information and sent to the user equipment.
  • the base station can determine the symbol position of the Premodulation Reference Signal (DMRS). Since the preamble DMRS is usually at the first symbol position of the time domain resource of the PDSCH, in step S101, the base station can determine the start symbol position of the time domain resource of the PDSCH according to the symbol position of the preamble DMRS. In other words, the symbol position of the preamble DMRS is the starting symbol position of the time domain resource of the PDSCH.
  • DMRS Premodulation Reference Signal
  • the row index in the preset time domain table of the embodiment indicates a plurality of different starting positions and corresponding symbol lengths, and the plurality of different starting positions correspond to the plurality of pre-demodulation reference signals. Configure the symbol location.
  • each row index in the preset time domain table may indicate a plurality of different starting positions and their corresponding symbol lengths, or a certain row index or some row indexes in the preset time domain table may indicate multiple differences.
  • the starting position and its corresponding symbol length may indicate a plurality of different starting positions and their corresponding symbol lengths.
  • the preset table may be pre-configured and stored in the base station and the user equipment.
  • the base station and the user equipment pre-approve the specific configuration of the preset table, for example, the preset table is agreed by the communication protocol, and the base station and the user equipment can learn the options in the preset table when needed.
  • mapping type When the mapping type is Type A, the pre-DMRS will be mapped according to the location configured in the Physical Broadcast Channel (PBCH), such as Symbol 2 and Symbol 3.
  • PBCH Physical Broadcast Channel
  • the mapping type is Type B, the pre-DMRS is in the first symbol position of the time domain resource of the PDSCH.
  • the parameter dmrs-TypeA-Position in the PBCH can configure whether the pre-DMRS is at symbol 2 or symbol 3.
  • the PBCH may configure the pre-DMRS to be at symbol 2 or symbol 3.
  • the starting position indicated by the row index (such as X, X+1, X+2, X+3, ...) may be symbol 2 or symbol 3.
  • one subframe has 14 symbols, which are symbols 0, 1, 2, ..., 13 in turn; under the extended CP, there are 12 symbols in one subframe, and symbols 0, 1, 2 in order. ..., 11.
  • the row index may be determined in the preset time domain table according to at least the starting symbol position.
  • start symbol position is the symbol 2
  • index X, X+1, X+2, and X+3 includes an option that the start position is 2, and does not include the option that the start position is 3.
  • start symbol position is the symbol 3
  • index X, X+1, X+2, X+3 includes an option that the start position is 3, and does not include the option that the start position is 2.
  • the base station may further determine the row index determining row index by using a symbol length required by the time domain resource.
  • the row index is carried in the downlink control information and sent to the user equipment.
  • the base station may further determine the row index by combining the time slot offset of the time domain resource.
  • the row index in the preset time domain table indicates a plurality of different starting positions, and the plurality of different starting positions correspond to the plurality of configurable symbol positions of the pre-demodulation reference signal, thereby With fewer row indexes, more starting symbol positions can be indicated; further, in the case where the total number of row indexes in the preset table is limited, the saved row index can be used for configuration of more other mapping types. The flexibility of PDSCH scheduling is achieved.
  • the symbol position of the pre-demodulation reference signal is mapped according to a configuration of a physical broadcast channel.
  • a plurality of different starting locations correspond to a plurality of configurable symbol locations of the pre-DMRS.
  • the plurality of configurable symbol locations of the pre-DMRS are mapped according to the configuration of the PBCH.
  • the PBCH configures a plurality of configurable symbol positions of the pre-DMRS as symbol 2 and symbol 3.
  • the step S103 shown in FIG. 1 may include the following steps: the line index is carried in the downlink control information of the format 1_0 and sent to the user equipment.
  • the format of the DCI may include 1_0 and 1_1.
  • the table used by DCI in the format 1_1 can be configured by higher layer signaling. Therefore, the row index determined in the preset table by the method shown in FIG. 1 can be sent to the UE through the DCI of the format 1_0.
  • the user equipment may detect the downlink control information outside a control resource set configured by a physical broadcast channel.
  • the UE may monitor the PDCCH in the control resource set CORESET0.
  • the detection of DCI1_0 in the control resource set CORESET0 needs to be limited by the time-frequency domain relationship between the SSB and the PDSCH and the PDCCH, and must meet the preset time-frequency domain conditions, and cannot be randomly configured.
  • the other control resource set detection DCI1_0 other than the control resource set CORESET0 can be restricted by the time-frequency domain relationship between the SSB and the PDSCH and the PDCCH, and thus the configurable range is larger. Embodiments of the present disclosure may be applied in this scenario.
  • DCI1_0 may include but is not limited to the following information:
  • VRB-to-PRB mapping of a virtual resource block (VRB) to a physical resource block (PRB)
  • the user equipment detects the downlink control information in a control resource set, and the control resource set is time-division multiplexed with a transmission resource of the physical downlink shared channel.
  • detecting DCI1_0 in the control resource set CORESET0 requires limitation of the time-frequency domain relationship between the SSB, the PDSCH, and the PDCCH, and satisfies the preset time-frequency domain condition.
  • the time-frequency domain relationship between the SSB and the PDSCH and the PDCCH is time division multiplexing.
  • the starting symbol position indicated by the row index is 8, and the symbol length occupied by the time domain resource is 4.
  • the start symbol position indicated by the row index may be 8, when The symbol length occupied by the domain resource can be 4.
  • the frequency of the control resource set CORESET0 is greater than a preset frequency, for example, 6 GHz, that is, the control resource set CORESET0 is at At high frequencies, the UE has the need to perform DCI reception and PDSCH scheduling in the same time slot.
  • a row index can be added to the preset table, indicating that the starting symbol position is 8, and the symbol length occupied by the time domain resource is an option of 4.
  • the row index Y indicates that the start symbol position of the time domain resource is 8, and the symbol length occupied by the time domain resource is 4.
  • the symbol position of the control resource set CORESET0 is 7, and the symbol length is 1, the scheduling of the PDSCH can be performed in the current slot (that is, the slot in which the symbols 7, 8, 9, 10, 11 are located).
  • the start symbol position indicated by the row index is 8, 9, or 10, and the symbol length occupied by the time domain resource is 4; or the line index indicates the The start symbol position is 7, and the time domain resource occupies a symbol length of 7.
  • the row index The indicated start symbol position is 8, 9, or 10, and the time domain resource occupies a symbol length of 4; or, the row index indicates a start symbol position of 7, and the time domain resource occupies a symbol length of 7.
  • the other control resource set detection DCI1_0 other than the control resource set CORESET0 can be restricted by the time-frequency domain relationship between the SSB and the PDSCH and the PDCCH, and thus the configurable range is larger.
  • the mapping type of the PDSCH is type B.
  • the embodiment of the present disclosure supports the starting symbol position as 8, 9, or 10 in the preset table, the symbol length occupied by the time domain resource is 4, and the starting symbol position is 7, the symbol occupied by the time domain resource A configuration with a length of 7.
  • the embodiments of the present disclosure implement the configuration of resource scheduling of the PDSCH under the mapping type B, and further improve the flexibility of the PDSCH scheduling.
  • the physical downlink shared channel receiving method may include the following steps:
  • Step S201 receiving a pre-demodulation reference signal and a row index carried in the downlink control information
  • Step S202 Determine, according to the row index and the symbol position of the pre-demodulation reference signal, a starting symbol position and a symbol length of a time domain resource for transmitting a physical downlink shared channel in a preset time domain table;
  • Step S203 Demodulate the downlink shared channel according to a start symbol position and a symbol length of the time domain resource.
  • the physical downlink shared channel receiving method shown in FIG. 2 can be used on the user equipment side.
  • the UE may receive the pre-DMRS and the DCI sent by the base station.
  • the row index is carried in the DCI.
  • the row index may indicate the start symbol position and symbol length of the time domain resource of the PDSCH in the preset table. Those skilled in the art can understand that the row index can also indicate the time slot offset of the time domain resource of the PDSCH, the mapping type, and the like.
  • a plurality of different starting positions indicated by the row index may be determined in the preset time domain table according to the row index.
  • the starting symbol position of the time domain resource can be determined according to the symbol position of the pre-DMRS. So far, the UE can determine the starting symbol position and symbol length of the time domain resource of the PDSCH.
  • the symbol position of the DMRS received by the UE is 2, and the row index is X. According to the index X, it is possible to determine that the starting position S is 2, the symbol length L is 12, and the starting position S is 3, and the symbol length L is 11 options.
  • the symbol position according to the pre-DMRS is 2.
  • the UE can determine that the start time symbol of the time domain resource of the PDSCH is 2 and the symbol length is 12.
  • the PDSCH can be demodulated within the time domain resource defined by the start symbol position and the symbol length.
  • the UE may demodulate the PDSCH by using the pre-DMRS.
  • the row index in the preset time domain table indicates a plurality of different starting positions, and the plurality of different starting positions correspond to the plurality of configurable symbol positions of the pre-demodulation reference signal, thereby Using fewer row indexes can indicate more starting symbol positions; further, in the case where the total number of row indexes in the preset table is limited, the saved row index can be used for configuration of more other mapping types, The flexibility of PDSCH scheduling.
  • the step S201 shown in FIG. 2 may include the following steps: receiving the row index carried in the downlink control information in the format 1_0.
  • the step S201 shown in FIG. 2 may further include the step of detecting and receiving the downlink control information outside the control resource set of the physical broadcast channel configuration.
  • the step S201 shown in FIG. 2 may further include the following steps: detecting the downlink control information in a control resource set, and the control resource set and the transmission resource of the physical downlink shared channel are time division multiplexed
  • the row index indicates the The start symbol position is 8, and the time domain resource occupies a symbol length of 4.
  • the symbol position of the pre-demodulation reference signal is mapped according to a configuration of a physical broadcast channel.
  • the step S201 shown in FIG. 2 may further include the following steps: the starting symbol position indicated by the row index is 8, 9, or 10, and the symbol length occupied by the time domain resource is Or the start symbol position indicated by the row index is 7, and the symbol length occupied by the time domain resource is 7.
  • the start symbol position indicated by the row index is 8, 9 or 10
  • the symbol length occupied by the time domain resource is 4
  • the starting symbol position indicated by the row index is 7, and the symbol length occupied by the time domain resource is 7.
  • the time domain resource indicating device 30 of the physical downlink shared channel can be used for the base station side.
  • the time domain resource indicating means 30 of the physical downlink shared channel may include a start symbol position determining module 301, a row index determining module 302, and a row index transmitting module 303.
  • the start symbol position determining module 301 is adapted to determine, according to the symbol position of the pre-demodulation reference signal, a start symbol position of the time domain resource for transmitting the physical downlink shared channel;
  • the row index determining module 302 is adapted to determine a row index in the preset time domain table based at least on the starting symbol position;
  • the row index sending module 303 is adapted to carry the row index in the downlink control information and send it to the user equipment.
  • the row index in the preset time domain table indicates a plurality of different starting locations and corresponding symbol lengths, and the plurality of different starting locations correspond to the plurality of configurable symbols of the pre-demodulation reference signal position
  • the time domain resource indicating device 30 of the physical downlink shared channel may be internally integrated or externally coupled to the base station.
  • the base station may determine the starting symbol position of the time domain resource of the PDSCH according to the symbol position of the pre-DMRS.
  • the symbol position of the preamble DMRS is the starting symbol position of the time domain resource of the PDSCH.
  • the preset table may be pre-configured and stored in the base station and the user equipment.
  • the base station and the user equipment pre-approve the specific configuration of the preset table, for example, the preset table is agreed by the communication protocol, and the base station and the user equipment can learn the options in the preset table when needed.
  • the row index in the preset time domain table indicates a plurality of different starting positions, and the plurality of different starting positions correspond to the plurality of configurable symbol positions of the pre-demodulation reference signal, thereby With fewer row indexes, more starting symbol positions can be indicated; further, in the case where the total number of row indexes in the preset table is limited, the saved row index can be used for configuration of more other mapping types. The flexibility of PDSCH scheduling is achieved.
  • the row index sending module 303 may send the row index to the user equipment in the downlink control information of the format 1_0.
  • the format of the DCI may include 1_0 and 1_1.
  • the table used by DCI in the format 1_1 can be configured by higher layer signaling. Therefore, the row index determined in the preset table can be sent to the UE through the DCI of the format 1_0.
  • the user equipment detects the downlink control information outside a control resource set configured by a physical broadcast channel.
  • the user equipment detects the downlink control information in a control resource set, and the control resource set is time division multiplexed with a transmission resource of the physical downlink shared channel.
  • the UE may monitor the PDCCH in the control resource set CORESET0.
  • the detection of DCI1_0 in the control resource set CORESET0 needs to be limited by the time-frequency domain relationship between the SSB and the PDSCH and the PDCCH, and must meet the preset time-frequency domain conditions, and cannot be randomly configured.
  • the other control resource set detection DCI1_0 other than the control resource set CORESET0 can be restricted by the time-frequency domain relationship between the SSB and the PDSCH and the PDCCH, and thus the configurable range is larger. Embodiments of the present disclosure may be applied in this scenario.
  • detecting DCI1_0 in the control resource set CORESET0 requires limitation of the time-frequency domain relationship between the SSB, the PDSCH, and the PDCCH, and satisfies the preset time-frequency domain condition.
  • the time-frequency domain relationship between the SSB and the PDSCH and the PDCCH is time division multiplexing.
  • start symbol position indicated by the row index is 8, and the symbol length occupied by the time domain resource is 4.
  • the start symbol position indicated by the row index may be 8, when The symbol length occupied by the domain resource can be 4.
  • the frequency of the control resource set CORESET0 is greater than a preset frequency, for example, 6 GHz, that is, the control resource set CORESET0 is at At high frequencies, the UE has the need to perform DCI reception and PDSCH scheduling in the same time slot.
  • a row index can be added to the preset table, indicating that the starting symbol position is 8, and the symbol length occupied by the time domain resource is an option of 4.
  • the start symbol position indicated by the row index is 8, 9, or 10, and the symbol length occupied by the time domain resource is 4; or the start symbol position indicated by the row index is 7
  • the time domain resource occupies a symbol length of 7.
  • the row index The starting symbol position of the indication may be 8, 9 or 10, and the symbol length occupied by the time domain resource may be 4; or the starting symbol position indicated by the row index may be 7, and the symbol length occupied by the time domain resource may be 7.
  • the other control resource set detection DCI1_0 other than the control resource set CORESET0 can be restricted by the time-frequency domain relationship between the SSB and the PDSCH and the PDCCH, and thus the configurable range is larger.
  • the mapping type of the PDSCH is type B. That is, when the symbol position of the pre-DMRS is not limited to the configuration of the PBCH, the time domain resources available for the PDSCH may have more configurations.
  • the embodiment of the present disclosure supports the starting symbol position as 8, 9, or 10 in the preset table, the symbol length occupied by the time domain resource is 4, and the starting symbol position is 7, the symbol occupied by the time domain resource A configuration with a length of 7.
  • the physical downlink shared channel receiving apparatus 40 can be used for the UE side.
  • the physical downlink shared channel receiving apparatus 40 may include a row index receiving module 401, a time domain resource determining module 402, and a physical downlink shared channel demodulating module 403.
  • the row index receiving module 401 is adapted to receive a pre-demodulation reference signal and a row index carried in the downlink control information;
  • the time domain resource determining module 402 is adapted to: according to the row index and the pre-demodulation reference signal a symbol position, determining a start symbol position and a symbol length of a time domain resource for transmitting a physical downlink shared channel in a preset time domain table;
  • the physical downlink shared channel demodulation module 403 is adapted to start a symbol position according to the time domain resource And the symbol length demodulates the physical downlink shared channel.
  • the row index in the preset time domain table indicates a plurality of different starting locations and corresponding symbol lengths, and the plurality of different starting locations correspond to the plurality of configurable symbols of the pre-demodulation reference signal position.
  • the row index in the preset time domain table indicates a plurality of different starting positions, and the plurality of different starting positions correspond to the plurality of configurable symbol positions of the pre-demodulation reference signal, thereby With fewer row indexes, more starting symbol positions can be indicated; further, in the case where the total number of row indexes in the preset table is limited, the saved row index can be used for configuration of more other mapping types. The flexibility of PDSCH scheduling is achieved.
  • the row index receiving module 401 can receive the row index carried in the downlink control information in the format 1_0.
  • the row index receiving module 401 detects and receives the downlink control information outside the set of control resources configured by the physical broadcast channel.
  • the row index receiving module 401 detects the downlink control information in a control resource set, and the control resource set is time-division multiplexed with the transmission resource of the physical downlink shared channel.
  • the start symbol position indicated by the row index is 8, and the symbol length occupied by the time domain resource is 4.
  • the start symbol position indicated by the row index may be 8, and the time domain resource The occupied symbol length can be 4.
  • the mapping type of the PDSCH is Type B (Type B), that is, the symbol position of the pre-demodulation reference signal is at the first symbol position of the time domain resource.
  • Type B the symbol position of the pre-demodulation reference signal is at the first symbol position of the time domain resource.
  • the start symbol position indicated by the row index is 8, 9, or 10, and the symbol length occupied by the time domain resource is 4; or the line index indicates the The start symbol position is 7, and the time domain resource occupies a symbol length of 7.
  • the row index receiving module 401 detects downlink control information outside the control resource set of the physical broadcast channel configuration.
  • the start of the row index indication The symbol position may be 8, 9 or 10, and the symbol length occupied by the time domain resource may be 4; or the start symbol position indicated by the row index may be 7, and the symbol length occupied by the time domain resource may be 7.
  • the mapping type of the PDSCH is type B, and when the user equipment detects the downlink control information outside the control resource set configured by the physical broadcast channel, the start time symbol position of the time domain resource may be 8, 9 or 10, the configuration of the occupied symbol length is 4; and, the time domain resource start symbol position is 7, and the occupied symbol length is 7. Therefore, more configurations of resource scheduling of the PDSCH under the mapping type B are implemented, and the flexibility of PDSCH scheduling is further improved.
  • the embodiment of the present disclosure further discloses a storage medium on which computer instructions are stored, and the steps of the time domain resource indication method of the physical downlink shared channel shown in FIG. 1 may be executed when the computer instruction is running, or the method in FIG. 2 is executed.
  • the storage medium may include a ROM, a RAM, a magnetic disk, an optical disk, or the like.
  • the storage medium may also include a non-volatile or non-transitory memory or the like.
  • Embodiments of the present disclosure also disclose a base station that can include a memory and a processor having stored thereon computer instructions executable on the processor.
  • Embodiments of the present disclosure also disclose a terminal that can include a memory and a processor on which is stored computer instructions executable on the processor.
  • the step of the physical downlink shared channel receiving method shown in FIG. 2 may be performed when the processor runs the computer instructions.
  • the terminal includes, but is not limited to, a terminal device such as a mobile phone, a computer, a tablet computer, and the like.

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Abstract

一种物理下行共享信道接收及其时域资源指示方法、装置、存储介质、基站、终端，物理下行共享信道的时域资源指示方法包括：根据前置解调参考信号的符号位置确定传输物理下行共享信道的时域资源的起始符号位置；至少根据所述起始符号位置在预设时域表格中确定行索引；将所述行索引携带于下行控制信息中发送给用户设备。本公开技术方案可以实现PDSCH调度的灵活性。

Description

物理下行共享信道接收及其时域资源指示方法、装置、存储介质、基站、终端 技术领域
本公开涉及通信技术领域，尤其涉及一种物理下行共享信道接收及其时域资源指示方法、装置、存储介质、基站、终端。
背景技术
在第三代合作伙伴计划(3rd Generation Partnership Project,3GPP)的新无线(New Radio,NR)系统的帧结构中，在时域长度为10ms的无线帧内，每个无线帧被包括10个同样大小的长度为1ms的子帧。每个子帧包括多个时隙。每个时隙由一定数量的符号构成，且符号数量由循环前缀(cyclic prefix,CP)类型决定。
现有技术中，NR中调度物理下行共享信道(Physical Downlink Shared Channel,PDSCH)的下行控制信息(Downlink Control Information,DCI)的格式包括格式1_0和格式1_1。其中，上述DCI格式中包含时域资源分配(time domain resource assignment)，用于通知用户设备(User Equipment,UE)使用的PDSCH时域资源位置。DCI可以指示指向UE时域专用表格的行索引，提供用于PDSCH传输的正交频分复用(Orthogonal Frequency Division Multiplexing,OFDM)符号，包含起始OFDM符号和分配的OFDM符号长度、发送PDSCH的时隙偏置、PDSCH的映射类型Type A或Type B。DCI格式1-1所使用UE时域专用表格可以由高层信令配置。
但是，DCI格式1-0时所使用UE时域专用表格均不可配置，导致PDSCH可使用的调度资源有限。
发明内容
本公开解决的技术问题是如何实现PDSCH调度的灵活性。
为解决上述技术问题，本公开实施例提供一种物理下行共享信道的时域资源指示方法，物理下行共享信道的时域资源指示方法包括根据前置解调参考信号的符号位置确定传输物理下行共享信道的时域资源的起始符号位置；至少根据所述起始符号位置在预设时域表格中确定行索引；将所述行索引携带于下行控制信息中发送给用户设备。
在一种可能的实施方式中，所述预设时域表格中的所述行索引指示多个不同的起始位置及其对应的符号长度，所述多个不同的起始位置对应所述前置解调参考信号的多个可配置符号位置。
在一种可能的实施方式中，所述用户设备在物理广播信道配置的控制资源集合之外检测所述下行控制信息。
在一种可能的实施方式中，所述用户设备在控制资源集合内检测所述下行控制信息，且所述控制资源集合与所述物理下行共享信道的传输资源时分复用。
在一种可能的实施方式中，所述行索引指示的所述起始符号位置为8，所述时域资源占用的符号长度为4。
在一种可能的实施方式中，所述前置解调参考信号的符号位置是按照物理广播信道的配置进行映射的。
在一种可能的实施方式中，所述行索引指示的所述起始符号位置为8、9或10，所述时域资源占用的符号长度为4；或者，所述行索引指示的所述起始符号位置为7，所述时域资源占用的符号长度为7。
在一种可能的实施方式中，所述至少根据所述起始符号位置在预设时域表格中确定行索引包括：根据所述起始符号位置，以及所述时域资源所需的符号长度确定所述行索引。
为解决上述技术问题，本公开实施例还公开了一种物理下行共享信道接收方法，物理下行共享信道接收方法包括：
接收前置解调参考信号以及携带于下行控制信息中的行索引；根据所述行索引和所述前置解调参考信号的符号位置，在预设时域表格中确定传输物理下行共享信道的时域资源的起始符号位置和符号长度；根据所述时域资源的起始符号位置和符号长度解调所述下行共享信道。
在一种可能的实施方式中，所述预设时域表格中的所述行索引指示多个不同的起始位置及其对应的符号长度，所述多个不同的起始位置对应所述前置解调参考信号的多个可配置符号位置。
在一种可能的实施方式中，所述接收携带于下行控制信息中的行索引包括：在物理广播信道配置的控制资源集合之外检测并接收所述下行控制信息。
在一种可能的实施方式中，所述接收携带于下行控制信息中的行索引包括：在控制资源集合内检测所述下行控制信息，所述控制资源集合与所述物理下行共享信道的传输资源时分复用。
在一种可能的实施方式中，所述行索引指示的所述起始符号位置为8，所述时域资源占用的符号长度为4。
在一种可能的实施方式中，所述前置解调参考信号的符号位置是按照物理广播信道的配置进行映射的。
在一种可能的实施方式中，所述接收携带于下行控制信息中的行索引包括：所述行索引指示的所述起始符号位置为8、9或10，所述时域资源占用的符号长度为4；或者，所述行索引指示的所述起始符号位置为7，所述时域资源占用的符号长度为7。
本公开实施例还公开了一种物理下行共享信道的时域资源指示装置，包括：起始符号位置确定模块，适于根据前置解调参考信号的符号位置确定传输物理下行共享信道的时域 资源的起始符号位置；行索引确定模块，适于至少根据所述起始符号位置在预设时域表格中确定行索引；行索引发送模块，适于将所述行索引携带于下行控制信息中发送给用户设备。
在一种可能的实施方式中，所述预设时域表格中的所述行索引指示多个不同的起始位置及其对应的符号长度，所述多个不同的起始位置对应所述前置解调参考信号的多个可配置符号位置。
在一种可能的实施方式中，所述用户设备在物理广播信道配置的控制资源集合之外检测所述下行控制信息。
在一种可能的实施方式中，所述用户设备在控制资源集合内检测所述下行控制信息，且所述控制资源集合与所述物理下行共享信道的传输资源时分复用。
在一种可能的实施方式中，所述行索引指示的所述起始符号位置为8，所述时域资源占用的符号长度为4。
在一种可能的实施方式中，所述前置解调参考信号的符号位置是按照物理广播信道的配置进行映射的。
在一种可能的实施方式中，所述行索引指示的所述起始符号位置为8、9或10，所述时域资源占用的符号长度为4；或者，所述行索引指示的所述起始符号位置为7，所述时域资源占用的符号长度为7。
在一种可能的实施方式中，所述至少根据所述起始符号位置在预设时域表格中确定行索引包括：根据所述起始符号位置，以及所述时域资源所需的符号长度确定所述行索引。
本公开实施例还公开了一种物理下行共享信道接收装置，包括：行索引接收模块，适于接收前置解调参考信号以及携带于下行控制信息中的行索引；时域资源确定模块，适于根据所述行索引和所述前置解调参考信号的符号位置，在预设时域表格中确定传输物理下行共享信道的时域资源的起始符号位置和符号长度；物理下行共享信道解调模块，适于根据所述时域资源的起始符号位置和符号长度解调所述物理下行共享信道。
在一种可能的实施方式中，所述预设时域表格中的所述行索引指示多个不同的起始位置及其对应的符号长度，所述多个不同的起始位置对应所述前置解调参考信号的多个可配置符号位置。
在一种可能的实施方式中，所述行索引接收模块在物理广播信道配置的控制资源集合之外检测并接收所述下行控制信息。
在一种可能的实施方式中，所述行索引接收模块在控制资源集合内检测所述下行控制信息，所述控制资源集合与所述物理下行共享信道的传输资源时分复用。
在一种可能的实施方式中，所述行索引指示的所述起始符号位置为8，所述时域资源 占用的符号长度为4。
在一种可能的实施方式中，所述前置解调参考信号的符号位置是按照物理广播信道的配置进行映射的。
在一种可能的实施方式中，所述行索引指示的所述起始符号位置为8、9或10，所述时域资源占用的符号长度为4；或者，所述行索引指示的所述起始符号位置为7，所述时域资源占用的符号长度为7。
本公开实施例还公开了一种存储介质，其上存储有计算机指令，所述计算机指令运行时执行所述物理下行共享信道的时域资源指示方法的步骤，或者所述物理下行共享信道接收方法的步骤。
本公开实施例还公开了一种基站，包括存储器和处理器，所述存储器上存储有可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所述物理下行共享信道的时域资源指示方法的步骤。
本公开实施例还公开了一种终端，包括存储器和处理器，所述存储器上存储有可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所述物理下行共享信道接收方法的步骤。
与现有技术相比，本公开实施例的技术方案具有以下有益效果：
本公开技术方案根据前置解调参考信号的符号位置确定传输物理下行共享信道的时域资源的起始符号位置；至少根据所述起始符号位置在预设时域表格中确定行索引；将所述行索引携带于下行控制信息中发送给用户设备。本公开技术方案中，预设时域表格中的行索引指示多个不同的起始位置，多个不同的起始位置对应所述前置解调参考信号的多个可配置符号位置，由此，采用更少的行索引可以指示更多的起始符号位置；进而，在预设表格中的行索引总量有限的情况下，节省下的行索引可以用于更多其他映射类型的配置，实现了PDSCH调度的灵活性。
进一步地，所述用户设备在控制资源集合内检测所述下行控制信息，且所述控制资源集合与所述物理下行共享信道的传输资源时分复用。所述行索引指示的所述起始符号位置为8，所述时域资源占用的符号长度为4。本公开技术方案中，PDSCH的映射类型为类型B(Type B)，也即前置解调参考信号的符号位置处于所述时域资源的第一个符号位置。控制资源集合与PDSCH的时域关系为时分复用且控制资源集合所处频率为高频的情况下，可以支持所述时域资源起始符号位置为8，占用的符号长度为4的配置，从而在控制资源集合的起始位置为符号7且长度为1的情况下，可以在同一时隙内完成PDSCH的资源调度，满足用户需求。
进一步地，所述行索引指示的所述起始符号位置为8、9或10，所述时域资源占用的符号长度为4；或者，所述行索引指示的所述起始符号位置为7，所述时域资源占用的符 号长度为7。本公开技术方案中，PDSCH的映射类型为类型B，且用户设备在物理广播信道配置的控制资源集合之外检测所述下行控制信息时，可以支持时域资源起始符号位置为8、9或10，占用的符号长度为4的配置；以及，时域资源起始符号位置为7，占用的符号长度为7的配置。从而实现了更多种PDSCH在映射类型B下的资源调度的配置，进一步提升PDSCH调度的灵活性。
附图说明
图1是本公开实施例一种物理下行共享信道的时域资源指示方法的流程图；
图2是本公开实施例一种物理下行共享信道接收方法的流程图；
图3是本公开实施例一种物理下行共享信道的时域资源指示装置的结构示意图；
图4是本公开实施例一种物理下行共享信道接收装置的结构示意图。
具体实施方式
如背景技术中所述，DCI格式1-0时所使用UE时域专用表格均不可配置，导致PDSCH可使用的调度资源有限。
在3GPP无线接入网络的RAN1 92会议中，如表1所示，有提案R1-1803504讨论上述表格中包含的时域资源。表1中示出了现有方案中所有可用的PDSCH的时域资源的配置。也即索引0至索引15指示的资源配置(包括映射类型、时隙偏置、起始位置和符号长度)。
具体地，映射类型为Type A时，前置DMRS会按照物理广播信道(Physical broadcast channel，PBCH)中配置的位置映射，例如符号2和符号3。映射类型为Type B时，前置DMRS会处于PDSCH的时域资源的第一个符号位置。
但是有较多的映射类型为Type A的资源配置选项，只有有限的几种映射类型为Type B的资源配置选项，使PDSCH的调度不灵活。仍然有一些时域资源需求没有满足。
例如，当PDCCH处于控制资源集合CORESET0内且采用图样(pattern)1时，也即CORESET0与PDSCH的传输资源时分复用，无法支持PDSCH映射类型B，起始符号为8，且长度为4的时域资源选项；当DCI格式1-0在非CORESET0内检测时，无法支持PDSCH映射类型B，起始符号为8/9/10，且长度为4的时域资源选项。PDSCH映射类型B，起始符号为7，且长度为7的时域资源选项。
表1
Figure PCTCN2019072668-appb-000001
本公开技术方案中，预设时域表格中的每一行索引指示多个不同的起始位置，多个不同的起始位置对应所述前置解调参考信号的多个可配置符号位置，由此，采用更少的行索引可以指示更多的起始符号位置；进而，在预设表格中的行索引总量有限的情况下，节省下的行索引可以用于更多其他映射类型的配置，实现了PDSCH调度的灵活性。
为使本公开的上述目的、特征和优点能够更为明显易懂，下面结合附图对本公开的具体实施例做详细的说明。
图1是本公开实施例一种物理下行共享信道的时域资源指示方法的流程图。
图1所示物理下行共享信道的时域资源指示方法可以用于基站侧，例如由基站执行，所述方法可以包括以下步骤：
步骤S101：根据前置解调参考信号的符号位置确定传输物理下行共享信道的时域资源的起始符号位置；
步骤S102：至少根据所述起始符号位置在预设时域表格中确定行索引；
步骤S103：将所述行索引携带于下行控制信息中发送给用户设备。
本实施例中，基站可以确定前置解调参考信号(Demodulation Reference Signal,DMRS)的符号位置。由于前置DMRS通常处于PDSCH的时域资源的第一个符号位置，因此在步骤S101中，基站可以根据前置DMRS的符号位置确定PDSCH的时域资源的起始符号位置。换言之，前置DMRS的符号位置为PDSCH的时域资源的起始符号位置。
本实施例的预设时域表格中的行索引指示多个不同的起始位置及其对应的符号长度，所述多个不同的起始位置对应所述前置解调参考信号的多个可配置符号位置。例如，预设时域表格中的每一行索引可以指示多个不同的起始位置及其对应的符号长度，或者，预设时域表格中的某一行索引或某些行索引可以指示多个不同的起始位置及其对应的符号长度。
需要说明的是，预设表格可以是预先配置好，并存储于基站和用户设备中。或者，基站和用户设备预先约定好预设表格的具体配置，例如通过通信协议约定好预设表格，在需要时，基站和用户设备可以获知预设表格中的选项。
具体请参照表2，映射类型为Type A时，前置DMRS会按照物理广播信道(Physical broadcast channel，PBCH)中配置的位置映射，例如符号2和符号3。映射类型为Type B时，前置DMRS会处于PDSCH的时域资源的第一个符号位置。
具体地，PBCH中的参数dmrs-TypeA-Position可以配置前置DMRS处于符号2还是符号3。
具体实施中，PBCH可以配置前置DMRS处于符号2或符号3。在表2所示的预设表格中，行索引(如X、X+1、X+2、X+3、…)指示的起始位置可以是符号2或符号3。
可以理解的是，常规CP下，一个子帧有14个符号，依次为符号0、1、2…、13；扩展CP下，，一个子帧有12个符号，依次为符号0、1、2…、11。
表2
Figure PCTCN2019072668-appb-000002
需要说明的是，表2中仅示出部分时域资源的配置选项；省略号部分还可以配置其他选项，例如可以选用表1中的部分配置选项，本公开实施例对此不做限制。
在步骤S102的具体实施中，可以至少根据所述起始符号位置在预设时域表格中确定行索引。
例如，起始符号位置为符号2时，可以确定索引X、X+1、X+2、X+3中包括起始位置为2的选项，不包括起始位置为3的选项。起始符号位置为符号3时，可以确定索引X、X+1、X+2、X+3中包括起始位置为3的选项，不包括起始位置为2的选项。
进一步地，基站还可以结合所述时域资源所需的符号长度确定所述行索引确定行索引。进而在步骤S103中，将所述行索引携带于下行控制信息中发送给用户设备。
需要说明的是，基站还可以结合时域资源的时隙偏置确定所述行索引。
本公开实施例中，预设时域表格中的行索引指示多个不同的起始位置，多个不同的起始位置对应所述前置解调参考信号的多个可配置符号位置，由此，采用更少的行索引可以指示更多的起始符号位置；进而，在预设表格中的行索引总量有限的情况下，节省下的行索引可以用于更多其他映射类型的配置，实现了PDSCH调度的灵活性。
进一步地，所述前置解调参考信号的符号位置是按照物理广播信道的配置进行映射的。
继续参照表2，多个不同的起始位置对应前置DMRS的多个可配置符号位置。前置DMRS的多个可配置符号位置是按照PBCH的配置进行映射的。例如，PBCH配置前置DMRS的多个可配置符号位置为符号2和符号3。
本领域技术人员可以理解的是，本公开实施例所称符号均是指单个子帧内的符号，以符号0开始，以符号13或符号11结束。
本公开一个具体实施例中，图1所示步骤S103可以包括以下步骤：将所述行索引携带于格式为1_0的下行控制信息中发送给所述用户设备。
具体地，DCI的格式可以包括1_0和1_1。格式为1_1的DCI所使用的表格可以由高层信令配置。因此，通过图1所示方法在预设表格中确定的行索引，可以通过格式为1_0的DCI发送给UE。
本公开一种应用场景中，所述用户设备可以在物理广播信道配置的控制资源集合之外检测所述下行控制信息。
具体地，控制资源集合CORESET0是UE初始接入小区时，由PBCH配置的，UE可以在控制资源集合CORESET0内监听PDCCH。在控制资源集合CORESET0内检测DCI1_0，需要受SSB与PDSCH、PDCCH的时频域关系的限制，必须满足预设的时频域条件，不能随机配置。在控制资源集合CORESET0之外的其他控制资源集合检测DCI1_0，可以不受SSB与PDSCH、PDCCH的时频域关系的限制，因此可配置的范围更大。本公开实施例可以在该场景下应用。
具体地，DCI1_0可以包括但不限于下述信息：
- DCI格式标识(Identifier for DCI formats)；
- 频域资源分配(Frequency domain resource assignment)；
- 时域资源分配(Time domain resource assignment)；
- 起始虚拟资源块(Virtual resource block，VRB)到物理资源块(Physical resource block，PRB)的映射(VRB-to-PRB mapping)；
- 调制和编码方式(Modulation and coding scheme)；
- 新数据指示(New data indicator)；
- 冗余版本(Redundancy version)；
- HARQ进程个数(HARQ process number)；
- 下行分配索引(Downlink assignment index)；
- 调度PUCCH的TPC命令(TPC command for scheduled PUCCH)；
- PUCCH资源指示(PUCCH resource indicator)；
- PDSCH到HARQ反馈的定时指示(PDSCH-to-HARQ feedback timing indicator)。
本公开另一种应用场景中，所述用户设备在控制资源集合内检测所述下行控制信息， 且所述控制资源集合与所述物理下行共享信道的传输资源时分复用。
如前所述，在控制资源集合CORESET0内检测DCI1_0，需要受到SSB与PDSCH、PDCCH的时频域关系的限制，满足预设的时频域条件。在该场景下，SSB与PDSCH、PDCCH的时频域关系为时分复用。
在一种可能的实施方式中，所述行索引指示的所述起始符号位置为8，所述时域资源占用的符号长度为4。
举例来说，前置解调参考信号的符号位置处于时域资源的第一个符号位置，且控制资源集合所处频率大于预设频率时，行索引指示的起始符号位置可以为8，时域资源占用的符号长度可以为4。对于在控制资源集合CORESET0内检测DCI1_0，SSB与PDSCH、PDCCH的时频域关系为时分复用的场景下，控制资源集合CORESET0所处频率大于预设频率，例如6GHz，也即控制资源集合CORESET0处于高频，UE具有在同一时隙进行DCI接收和PDSCH调度的需求。由此，可以在预设表格中增加行索引，指示起始符号位置为8，时域资源占用的符号长度为4的选项。
表3
索引 映射类型 时隙偏置K0 起始位置S 符号长度L
… … … … …
Y Type B 0 8 4
如表3所示，行索引Y指示时域资源的起始符号位置为8，时域资源占用的符号长度为4。由此，在控制资源集合CORESET0的符号位置为7，且符号长度为1时，可以在本时隙(也即符号7、8、9、10、11所在的时隙)内进行PDSCH的调度。
需要说明的是，表3中仅示出部分时域资源的配置选项；省略号部分还可以配置其他选项，例如可以选用表1、表2中的部分配置选项，本公开实施例对此不做限制。
本公开另一个具体实施例中，所述行索引指示的所述起始符号位置为8、9或10，所述时域资源占用的符号长度为4；或者，所述行索引指示的所述起始符号位置为7，所述时域资源占用的符号长度为7。
举例来说，用户设备在物理广播信道配置的控制资源集合之外检测所述下行控制信息，且前置解调参考信号的符号位置处于所述时域资源的第一个符号位置时，行索引指示的起始符号位置为8、9或10，时域资源占用的符号长度为4；或者，行索引指示的起始符号位置为7，时域资源占用的符号长度为7。如前所述，在控制资源集合CORESET0之外的其他控制资源集合检测DCI1_0，可以不受SSB与PDSCH、PDCCH的时频域关系的限制，因此可配置的范围更大。PDSCH的映射类型为类型B，也即前置DMRS的符号位置不限于PBCH的配置时，PDSCH可用的时域资源可以有更多的配置。由此，本公开实 施例在预设表格中支持起始符号位置为8、9或10，时域资源占用的符号长度为4；以及起始符号位置为7，所述时域资源占用的符号长度为7的配置。
具体可参照表4，预设表格的选项中可以支持下述配置。
表4
索引 映射类型 时隙偏置K0 起始位置S 符号长度L
… … … … …
Y Type B 0 8 4
Z Type B 0 9 4
Z+1 Type B 0 10 4
Z+2 Type B 0 7 7
本公开实施例实现了更多种PDSCH在映射类型B下的资源调度的配置，进一步提升PDSCH调度的灵活性。
需要说明的是，表4中仅示出部分时域资源的配置选项；省略号部分还可以配置其他选项，例如可以选用表1、表2中的部分配置选项，本公开实施例对此不做限制。
如图2所示，物理下行共享信道接收方法可以包括以下步骤：
步骤S201：接收前置解调参考信号以及携带于下行控制信息中的行索引；
步骤S202：根据所述行索引和所述前置解调参考信号的符号位置，在预设时域表格中确定传输物理下行共享信道的时域资源的起始符号位置和符号长度；
步骤S203：根据所述时域资源的起始符号位置和符号长度解调所述下行共享信道。
图2所示的物理下行共享信道接收方法可以用于用户设备侧。
在步骤S201的具体实施中，UE可以接收基站发送的前置DMRS以及DCI。DCI中携带行索引。行索引在预设表格中可以指示PDSCH的时域资源的起始符号位置和符号长度。本领域技术人员可以理解的是，行索引还可以指示PDSCH的时域资源的时隙偏置、映射类型等。
在步骤S202的具体实施中，根据行索引可以在预设时域表格中确定该行索引指示的多个不同的起始位置。根据前置DMRS的符号位置可以确定时域资源的起始符号位置。至此，UE可以确定PDSCH的时域资源的起始符号位置和符号长度。
例如，继续参照表2，UE接收到的DMRS的符号位置为2，行索引为X。根据索引X可以确定起始位置S为2，符号长度L为12，以及起始位置S为3，符号长度L为11两种选项。根据前置DMRS的符号位置为2。由此，UE可以确定PDSCH的时域资源的起始 符号位置为2，符号长度为12。
进而在步骤S203中，可以在起始符号位置和符号长度所限定的时域资源内解调PDSCH。具体地，UE可以利用前置DMRS解调PDSCH。
本实施例中，预设时域表格中的行索引指示多个不同的起始位置，多个不同的起始位置对应所述前置解调参考信号的多个可配置符号位置，由此，采用更少的行索引可以指示更多的起始符号位置；进而，在预设表格中的行索引总量有限的情况下，节省下的行索引可以用于更多其他映射类型的配置，实现了PDSCH调度的灵活性。
本公开一个具体实施例中，图2所示步骤S201可以包括以下步骤：接收格式为1_0的下行控制信息中携带的所述行索引。
本公开一个具体应用中，图2所示步骤S201还可以包括以下步骤：在物理广播信道配置的控制资源集合之外检测并接收所述下行控制信息。
本公开另一个具体应用中，图2所示步骤S201还可以包括以下步骤：在控制资源集合内检测所述下行控制信息，所述控制资源集合与所述物理下行共享信道的传输资源时分复用
进一步地，所述前置解调参考信号的符号位置处于所述时域资源的第一个符号位置，且所述控制资源集合所处频率大于预设频率时，所述行索引指示的所述起始符号位置为8，所述时域资源占用的符号长度为4。
本公开另一个具体实施例中，所述前置解调参考信号的符号位置是按照物理广播信道的配置进行映射的。
本公开又一个具体实施例中，图2所示步骤S201还可以包括以下步骤：所述行索引指示的所述起始符号位置为8、9或10，所述时域资源占用的符号长度为4；或者，所述行索引指示的所述起始符号位置为7，所述时域资源占用的符号长度为7。例如，在物理广播信道配置的控制资源集合之外检测下行控制信息，前置解调参考信号的符号位置处于所述时域资源的第一个符号位置时，行索引指示的起始符号位置为8、9或10，时域资源占用的符号长度为4；或者，行索引指示的所述起始符号位置为7，时域资源占用的符号长度为7。
请参照图3，物理下行共享信道的时域资源指示装置30可以用于基站侧。物理下行共享信道的时域资源指示装置30可以包括起始符号位置确定模块301、行索引确定模块302和行索引发送模块303。
其中，起始符号位置确定模块301适于根据前置解调参考信号的符号位置确定传输物理下行共享信道的时域资源的起始符号位置；
行索引确定模块302适于至少根据所述起始符号位置在预设时域表格中确定行索引；
行索引发送模块303适于将所述行索引携带于下行控制信息中发送给用户设备。
所述预设时域表格中的行索引指示多个不同的起始位置及其对应的符号长度，所述多个不同的起始位置对应所述前置解调参考信号的多个可配置符号位置
物理下行共享信道的时域资源指示装置30可以内部集成或外部耦接于基站。
基站可以根据前置DMRS的符号位置确定PDSCH的时域资源的起始符号位置。换言之，前置DMRS的符号位置为PDSCH的时域资源的起始符号位置。
需要说明的是，预设表格可以是预先配置好，并存储于基站和用户设备中。或者，基站和用户设备预先约定好预设表格的具体配置，例如通过通信协议约定好预设表格，在需要时，基站和用户设备可以获知预设表格中的选项。
本公开实施例中，预设时域表格中的行索引指示多个不同的起始位置，多个不同的起始位置对应所述前置解调参考信号的多个可配置符号位置，由此，采用更少的行索引可以指示更多的起始符号位置；进而，在预设表格中的行索引总量有限的情况下，节省下的行索引可以用于更多其他映射类型的配置，实现了PDSCH调度的灵活性。
本公开一个具体实施例中，行索引发送模块303可以将所述行索引携带于格式为1_0的下行控制信息中发送给所述用户设备。
具体地，DCI的格式可以包括1_0和1_1。格式为1_1的DCI所使用的表格可以由高层信令配置。因此，在预设表格中确定的行索引，可以通过格式为1_0的DCI发送给UE。
本公开一种应用中，所述用户设备在物理广播信道配置的控制资源集合之外检测所述下行控制信息。
本公开另一种应用中，所述用户设备在控制资源集合内检测所述下行控制信息，且所述控制资源集合与所述物理下行共享信道的传输资源时分复用。
具体地，控制资源集合CORESET0是UE初始接入小区时，由PBCH配置的，UE可以在控制资源集合CORESET0内监听PDCCH。在控制资源集合CORESET0内检测DCI1_0，需要受SSB与PDSCH、PDCCH的时频域关系的限制，必须满足预设的时频域条件，不能随机配置。在控制资源集合CORESET0之外的其他控制资源集合检测DCI1_0，可以不受SSB与PDSCH、PDCCH的时频域关系的限制，因此可配置的范围更大。本公开实施例可以在该场景下应用。
如前所述，在控制资源集合CORESET0内检测DCI1_0，需要受到SSB与PDSCH、PDCCH的时频域关系的限制，满足预设的时频域条件。在该场景下，SSB与PDSCH、PDCCH的时频域关系为时分复用。
进一步地，所述行索引指示的所述起始符号位置为8，所述时域资源占用的符号长度为4。
举例来说，前置解调参考信号的符号位置处于时域资源的第一个符号位置，且控制资源集合所处频率大于预设频率时，行索引指示的起始符号位置可以为8，时域资源占用的符号长度可以为4。对于在控制资源集合CORESET0内检测DCI1_0，SSB与PDSCH、PDCCH的时频域关系为时分复用的场景下，控制资源集合CORESET0所处频率大于预设频率，例如6GHz，也即控制资源集合CORESET0处于高频，UE具有在同一时隙进行DCI接收和PDSCH调度的需求。由此，可以在预设表格中增加行索引，指示起始符号位置为8，时域资源占用的符号长度为4的选项。
具体地，所述行索引指示的所述起始符号位置为8、9或10，所述时域资源占用的符号长度为4；或者，所述行索引指示的所述起始符号位置为7，所述时域资源占用的符号长度为7。举例来说，用户设备在物理广播信道配置的控制资源集合之外检测所述下行控制信息，且前置解调参考信号的符号位置处于所述时域资源的第一个符号位置时，行索引指示的起始符号位置可以为8、9或10，时域资源占用的符号长度可以为4；或者，行索引指示的起始符号位置可以为7，时域资源占用的符号长度可以为7。
如前所述，在控制资源集合CORESET0之外的其他控制资源集合检测DCI1_0，可以不受SSB与PDSCH、PDCCH的时频域关系的限制，因此可配置的范围更大。PDSCH的映射类型为类型B，也即前置DMRS的符号位置不限于PBCH的配置时，PDSCH可用的时域资源可以有更多的配置。由此，本公开实施例在预设表格中支持起始符号位置为8、9或10，时域资源占用的符号长度为4；以及起始符号位置为7，所述时域资源占用的符号长度为7的配置。
关于所述物理下行共享信道的时域资源指示装置30的工作原理、工作方式的更多内容，可以参照图1至图2中的相关描述，这里不再赘述。
请参照图4，物理下行共享信道接收装置40可以用于UE侧。物理下行共享信道接收装置40可以包括行索引接收模块401、时域资源确定模块402和物理下行共享信道解调模块403。
其中，行索引接收模块401适于接收前置解调参考信号以及携带于下行控制信息中的行索引；时域资源确定模块402适于根据所述行索引和所述前置解调参考信号的符号位置，在预设时域表格中确定传输物理下行共享信道的时域资源的起始符号位置和符号长度；物理下行共享信道解调模块403适于根据所述时域资源的起始符号位置和符号长度解调所述物理下行共享信道。
所述预设时域表格中的行索引指示多个不同的起始位置及其对应的符号长度，所述多个不同的起始位置对应所述前置解调参考信号的多个可配置符号位置。
本公开实施例中，预设时域表格中的行索引指示多个不同的起始位置，多个不同的起始位置对应所述前置解调参考信号的多个可配置符号位置，由此，采用更少的行索引可以 指示更多的起始符号位置；进而，在预设表格中的行索引总量有限的情况下，节省下的行索引可以用于更多其他映射类型的配置，实现了PDSCH调度的灵活性。
本公开一个具体实施例中，行索引接收模块401可以接收格式为1_0的下行控制信息中携带的所述行索引。
本公开一个具体应用中，行索引接收模块401在物理广播信道配置的控制资源集合之外检测并接收所述下行控制信息。
本公开另一个具体应用中，行索引接收模块401在控制资源集合内检测所述下行控制信息，所述控制资源集合与所述物理下行共享信道的传输资源时分复用。
进一步地，所述行索引指示的所述起始符号位置为8，所述时域资源占用的符号长度为4。例如，前置解调参考信号的符号位置处于时域资源的第一个符号位置，且控制资源集合所处频率大于预设频率时，行索引指示的起始符号位置可以为8，时域资源占用的符号长度可以为4。
本公开实施例中，PDSCH的映射类型为类型B(Type B)，也即前置解调参考信号的符号位置处于所述时域资源的第一个符号位置。控制资源集合与PDSCH的时域关系为时分复用且控制资源集合所处频率为高频的情况下，可以支持所述时域资源起始符号位置为8，占用的符号长度为4的配置，从而在控制资源集合的起始位置为符号7且长度为1的情况下，可以在同一时隙内完成PDSCH的资源调度，满足用户需求。
本公开另一个具体实施例中，所述行索引指示的所述起始符号位置为8、9或10，所述时域资源占用的符号长度为4；或者，所述行索引指示的所述起始符号位置为7，所述时域资源占用的符号长度为7。例如，行索引接收模块401在物理广播信道配置的控制资源集合之外检测下行控制信息，前置解调参考信号的符号位置处于时域资源的第一个符号位置时，行索引指示的起始符号位置可以为8、9或10，时域资源占用的符号长度可以为4；或者，行索引指示的起始符号位置可以为7，时域资源占用的符号长度可以为7。
本公开实施例中，PDSCH的映射类型为类型B，且用户设备在物理广播信道配置的控制资源集合之外检测所述下行控制信息时，可以支持时域资源起始符号位置为8、9或10，占用的符号长度为4的配置；以及，时域资源起始符号位置为7，占用的符号长度为7的配置。从而实现了更多种PDSCH在映射类型B下的资源调度的配置，进一步提升PDSCH调度的灵活性。
关于所述物理下行共享信道接收装置40的工作原理、工作方式的更多内容，可以参照图1至图2中的相关描述，这里不再赘述。
本公开实施例还公开了一种存储介质，其上存储有计算机指令，所述计算机指令运行时可以执行图1中所示物理下行共享信道的时域资源指示方法的步骤，或者执行图2中所示物理下行共享信道接收方法的步骤。所述存储介质可以包括ROM、RAM、磁盘或光盘 等。所述存储介质还可以包括非挥发性存储器(non-volatile)或者非瞬态(non-transitory)存储器等。
本公开实施例还公开了一种基站，所述基站可以包括存储器和处理器，所述存储器上存储有可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可以执行图1中所示物理下行共享信道的时域资源指示方法的步骤。
本公开实施例还公开了一种终端，所述终端可以包括存储器和处理器，所述存储器上存储有可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可以执行图2中所示物理下行共享信道接收方法的步骤。所述终端包括但不限于手机、计算机、平板电脑等终端设备。
虽然本公开披露如上，但本公开并非限定于此。任何本领域技术人员，在不脱离本公开的精神和范围内，均可作各种更动与修改，因此本公开的保护范围应当以权利要求所限定的范围为准。

Claims (33)

  1. 一种物理下行共享信道的时域资源指示方法，其特征在于，包括：
    根据前置解调参考信号的符号位置确定传输物理下行共享信道的时域资源的起始符号位置；
    至少根据所述起始符号位置在预设时域表格中确定行索引；
    将所述行索引携带于下行控制信息中发送给用户设备。
  2. 根据权利要求1所述的方法，其特征在于，所述预设时域表格中的所述行索引指示多个不同的起始位置及其对应的符号长度，所述多个不同的起始位置对应所述前置解调参考信号的多个可配置符号位置。
  3. 根据权利要求1所述的物理下行共享信道的时域资源指示方法，其特征在于，所述用户设备在物理广播信道配置的控制资源集合之外检测所述下行控制信息。
  4. 根据权利要求1所述的物理下行共享信道的时域资源指示方法，其特征在于，所述用户设备在控制资源集合内检测所述下行控制信息，且所述控制资源集合与所述物理下行共享信道的传输资源时分复用。
  5. 根据权利要求4所述的物理下行共享信道的时域资源指示方法，其特征在于，所述行索引指示的所述起始符号位置为8，所述时域资源占用的符号长度为4。
  6. 根据权利要求1所述的物理下行共享信道的时域资源指示方法，其特征在于，所述前置解调参考信号的符号位置是按照物理广播信道的配置进行映射的。
  7. 根据权利要求1所述的物理下行共享信道的时域资源指示方法，其特征在于，所述行索引指示的所述起始符号位置为8、9或10，所述时域资源占用的符号长度为4；或者，所述行索引指示的所述起始符号位置为7，所述时域资源占用的符号长度为7。
  8. 根据权利要求1所述的物理下行共享信道的时域资源指示方法，其特征在于，所述至少根据所述起始符号位置在预设时域表格中确定行索引包括：
    根据所述起始符号位置，以及所述时域资源所需的符号长度确定所述行索引。
  9. 一种物理下行共享信道接收方法，其特征在于，包括：
    接收前置解调参考信号以及携带于下行控制信息中的行索引；
    根据所述行索引和所述前置解调参考信号的符号位置，在预设时域表格中确定传输物理下行共享信道的时域资源的起始符号位置和符号长度；
    根据所述时域资源的起始符号位置和符号长度解调所述下行共享信道。
  10. 根据权利要求9所述的方法，其特征在于，所述预设时域表格中的所述行索引指示多个不同的起始位置及其对应的符号长度，所述多个不同的起始位置对应所述前置解调 参考信号的多个可配置符号位置。
  11. 根据权利要求9所述的物理下行共享信道接收方法，其特征在于，所述接收携带于下行控制信息中的行索引包括：
    在物理广播信道配置的控制资源集合之外检测并接收所述下行控制信息。
  12. 根据权利要求9所述的物理下行共享信道接收方法，其特征在于，所述接收携带于下行控制信息中的行索引包括：
    在控制资源集合内检测所述下行控制信息，所述控制资源集合与所述物理下行共享信道的传输资源时分复用。
  13. 根据权利要求12所述的物理下行共享信道接收方法，其特征在于，所述行索引指示的所述起始符号位置为8，所述时域资源占用的符号长度为4。
  14. 根据权利要求9所述的物理下行共享信道接收方法，其特征在于，所述前置解调参考信号的符号位置是按照物理广播信道的配置进行映射的。
  15. 根据权利要求9所述的物理下行共享信道接收方法，其特征在于，所述接收携带于下行控制信息中的行索引包括：
    所述行索引指示的所述起始符号位置为8、9或10，所述时域资源占用的符号长度为4；
    或者，所述行索引指示的所述起始符号位置为7，所述时域资源占用的符号长度为7。
  16. 一种物理下行共享信道的时域资源指示装置，其特征在于，包括：
    起始符号位置确定模块，适于根据前置解调参考信号的符号位置确定传输物理下行共享信道的时域资源的起始符号位置；
    行索引确定模块，适于至少根据所述起始符号位置在预设时域表格中确定行索引；
    行索引发送模块，适于将所述行索引携带于下行控制信息中发送给用户设备。
  17. 根据权利要求16所述的方法，其特征在于，所述预设时域表格中的所述行索引指示多个不同的起始位置及其对应的符号长度，所述多个不同的起始位置对应所述前置解调参考信号的多个可配置符号位置。
  18. 根据权利要求16所述的物理下行共享信道的时域资源指示装置，其特征在于，所述用户设备在物理广播信道配置的控制资源集合之外检测所述下行控制信息。
  19. 根据权利要求16所述的物理下行共享信道的时域资源指示装置，其特征在于，所述用户设备在控制资源集合内检测所述下行控制信息，且所述控制资源集合与所述物理下行共享信道的传输资源时分复用。
  20. 根据权利要求19所述的物理下行共享信道的时域资源指示装置，其特征在于，所述行 索引指示的所述起始符号位置为8，所述时域资源占用的符号长度为4。
  21. 根据权利要求16所述的物理下行共享信道的时域资源指示装置，其特征在于，所述前置解调参考信号的符号位置是按照物理广播信道的配置进行映射的。
  22. 根据权利要求16所述的物理下行共享信道的时域资源指示装置，其特征在于，所述行索引指示的所述起始符号位置为8、9或10，所述时域资源占用的符号长度为4；或者，所述行索引指示的所述起始符号位置为7，所述时域资源占用的符号长度为7。
  23. 根据权利要求16所述的物理下行共享信道的时域资源指示装置，其特征在于，所述至少根据所述起始符号位置在预设时域表格中确定行索引包括：
    根据所述起始符号位置，以及所述时域资源所需的符号长度确定所述行索引。
  24. 一种物理下行共享信道接收装置，其特征在于，包括：
    行索引接收模块，适于接收前置解调参考信号以及携带于下行控制信息中的行索引；
    时域资源确定模块，适于根据所述行索引和所述前置解调参考信号的符号位置，在预设时域表格中确定传输物理下行共享信道的时域资源的起始符号位置和符号长度；
    物理下行共享信道解调模块，适于根据所述时域资源的起始符号位置和符号长度解调所述物理下行共享信道。
  25. 根据权利要求24所述的装置，其特征在于，所述预设时域表格中的所述行索引指示多个不同的起始位置及其对应的符号长度，所述多个不同的起始位置对应所述前置解调参考信号的多个可配置符号位置。
  26. 根据权利要求24所述的物理下行共享信道接收装置，其特征在于，所述行索引接收模块在物理广播信道配置的控制资源集合之外检测并接收所述下行控制信息。
  27. 根据权利要求24所述的物理下行共享信道接收装置，其特征在于，所述行索引接收模块在控制资源集合内检测所述下行控制信息，所述控制资源集合与所述物理下行共享信道的传输资源时分复用。
  28. 根据权利要求27所述的物理下行共享信道接收装置，其特征在于，所述行索引指示的所述起始符号位置为8，所述时域资源占用的符号长度为4。
  29. 根据权利要求24所述的物理下行共享信道接收装置，其特征在于，所述前置解调参考信号的符号位置是按照物理广播信道的配置进行映射的。
  30. 根据权利要求24所述的物理下行共享信道接收装置，其特征在于，所述行索引指示的所述起始符号位置为8、9或10，所述时域资源占用的符号长度为4；或者，所述行索引指示的所述起始符号位置为7，所述时域资源占用的符号长度为7。
  31. 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8中任一项所述物理下行共享信道的时域资源指示方法的步骤，或者权利要求9至15中任一项所述物理下行共享信道接收方法的步骤。
  32. 一种基站，包括存储器和处理器，所述存储器上存储有可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8中任一项所述物理下行共享信道的时域资源指示方法的步骤。
  33. 一种终端，包括存储器和处理器，所述存储器上存储有可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9至15中任一项所述物理下行共享信道接收方法的步骤。
PCT/CN2019/072668 2018-03-29 2019-01-22 物理下行共享信道接收及其时域资源指示方法、装置、存储介质、基站、终端 WO2019184565A1 (zh)

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