WO2023005998A1 - Ndi确定方法、装置、终端及存储介质 - Google Patents

Ndi确定方法、装置、终端及存储介质 Download PDF

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Publication number
WO2023005998A1
WO2023005998A1 PCT/CN2022/108369 CN2022108369W WO2023005998A1 WO 2023005998 A1 WO2023005998 A1 WO 2023005998A1 CN 2022108369 W CN2022108369 W CN 2022108369W WO 2023005998 A1 WO2023005998 A1 WO 2023005998A1
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Prior art keywords
downlink scheduling
information
transmission
rnti
terminal
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PCT/CN2022/108369
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English (en)
French (fr)
Inventor
王飞
王大鹏
杨拓
张嘉真
李男
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China Mobile Communications Group Co Ltd
Research Institute of China Mobile Communication Co Ltd
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China Mobile Communications Group Co Ltd
Research Institute of China Mobile Communication Co Ltd
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Publication of WO2023005998A1 publication Critical patent/WO2023005998A1/zh
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • 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
    • H04W72/1273—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of downlink data flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/40—Connection management for selective distribution or broadcast

Definitions

  • the present application relates to the field of wireless communication, in particular to a new data indicator (NDI, New Data Indicator) determination method, device, terminal and storage medium.
  • NDI New Data indicator
  • the total number of HARQ processes supported by each cell (cell) of the user equipment (UE) in the new air interface (NR) system is configurable, and supports a maximum of 16 HARQ processes (English can be expressed as HARQ process).
  • the current mainstream trend is not to limit the total number of HARQ processes available for unicast and multicast, that is, unicast and multicast transmission can flexibly use a maximum of 16 HARQ processes any of the .
  • embodiments of the present application provide an NDI determination method, device, terminal, and storage medium.
  • An embodiment of the present application provides an NDI determination method applied to a terminal, including:
  • each physical downlink control channel (PDCCH) monitoring opportunity perform the following operations:
  • the current downlink scheduling allocation is determined based on at least two of the following information Whether the NDI rollover occurs:
  • First information where the first information represents the radio network temporary identifier (RNTI) to which the current downlink scheduling assignment is directed;
  • RNTI radio network temporary identifier
  • the second information characterizes whether the terminal is enabled for the retransmission mode of point-to-multipoint (PTM) transmission based on the function of point-to-point (PTP) transmission;
  • PTM point-to-multipoint
  • PTP point-to-point
  • third information where the third information represents the RNTI targeted by the last downlink scheduling assignment
  • the fourth information indicates whether the last downlink scheduling assignment is for unicast transmission or multicast transmission; the terminal has at least one RNTI for multicast transmission.
  • the determining whether the NDI assigned by the downlink scheduling this time has been reversed includes:
  • the second information indicates that the terminal is not enabled for retransmission of PTM transmission
  • the method can be based on the function of PTP transmission, and when the third information indicates that the last downlink scheduling allocation is for Cell Radio Network Temporary Identity (C-RNTI) interference, it is determined that the NDI of the current downlink scheduling allocation is reversed.
  • C-RNTI Cell Radio Network Temporary Identity
  • the determining whether the NDI assigned by the downlink scheduling this time has been reversed includes:
  • the second information indicates that the terminal is enabled for retransmission of PTM transmission
  • the method can be based on the function of PTP transmission, when the third information indicates that the last downlink scheduling allocation is for C-RNTI, and the fourth information indicates that the last downlink scheduling allocation is for unicast transmission, determine the current The NDI assigned by the next downlink scheduling is reversed.
  • the determining whether the NDI assigned by the downlink scheduling this time has been reversed includes:
  • the first information indicates that the current downlink scheduling allocation is the first RNTI for multicast transmission for the terminal
  • the third information indicates that the last downlink scheduling allocation is for the terminal
  • the second RNTI used for multicast transmission it is determined that the NDI allocated for downlink scheduling this time has been reversed; the first RNTI used for multicast transmission is different from the second RNTI used for multicast transmission.
  • the current downlink scheduling allocation is for the first multicast transmission, and the determining whether the NDI of the current downlink scheduling allocation is reversed includes:
  • the second information indicates that the terminal is enabled for retransmission of PTM transmission
  • the method can be based on the function of PTP transmission, when the third information indicates that the last downlink scheduling allocation is for C-RNTI, and the fourth information indicates that the last downlink scheduling allocation is for the second multicast transmission, determine the The NDI assigned by the downlink scheduling this time is reversed; the first multicast transmission is different from the second multicast transmission.
  • the determining whether the NDI assigned by the downlink scheduling this time has been reversed includes:
  • the first information indicates that the current downlink scheduling allocation is for a C-RNTI
  • the third information indicates that the last downlink scheduling allocation is for an RNTI for multicast transmission
  • the determining whether the NDI assigned by the downlink scheduling this time has been reversed includes:
  • the first information indicates that the current downlink scheduling assignment is for C-RNTI
  • the second information indicates that the terminal is enabled with a retransmission mode for PTM transmission based on PTP transmission
  • the third information indicates that the last downlink scheduling allocation is for C-RNTI
  • the fourth information indicates that the last downlink scheduling allocation is for multicast transmission
  • the method also includes:
  • the second information displayed or implicitly indicated by the network side is received.
  • the second information explicitly or implicitly indicated by the network side is received through radio resource control (RRC) signaling.
  • RRC radio resource control
  • the embodiment of the present application also provides an NDI determination device, including:
  • the processing unit is configured to perform the following operations at each PDCCH monitoring opportunity for a serving cell:
  • the current downlink scheduling allocation is determined based on at least two of the following information Whether the NDI rollover occurs:
  • First information where the first information represents the RNTI for which the current downlink scheduling allocation is targeted;
  • the second information indicates whether the terminal is enabled for the retransmission mode of PTM transmission based on the function of PTP transmission;
  • third information where the third information represents the RNTI targeted by the last downlink scheduling assignment
  • the fourth information indicates whether the last downlink scheduling assignment is for unicast transmission or multicast transmission; the terminal has at least one RNTI for multicast transmission.
  • the embodiment of the present application also provides a terminal, including: a processor and a communication interface; wherein,
  • the processor is configured to perform the following operations at each PDCCH monitoring opportunity for a serving cell:
  • the current downlink scheduling allocation is determined based on at least two of the following information Whether the NDI rollover occurs:
  • First information where the first information represents the RNTI for which the current downlink scheduling allocation is targeted;
  • the second information characterizes whether the terminal is enabled for the retransmission mode of PTM transmission based on the function of PTP transmission;
  • third information where the third information represents the RNTI targeted by the last downlink scheduling assignment
  • the fourth information indicates whether the last downlink scheduling assignment is for unicast transmission or multicast transmission; the terminal has at least one RNTI for multicast transmission.
  • An embodiment of the present application also provides a terminal, including: a processor and a memory configured to store a computer program that can run on the processor,
  • the processor is configured to execute the steps of any one of the above methods when running the computer program.
  • the embodiment of the present application also provides a storage medium on which a computer program is stored, and when the computer program is executed by a processor, the steps of any one of the above methods are implemented.
  • the terminal performs the following operations: Scheduling and allocation, and when the current downlink scheduling allocation is based on the first HARQ process, determine whether the NDI of the current downlink scheduling allocation is reversed based on at least two of the following information: first information, the first information represents The RNTI targeted for the current downlink scheduling allocation; the second information, the second information indicates whether the terminal is enabled for the retransmission mode of point PTM transmission based on the function of PTP transmission; the third information, the The third information indicates the RNTI for which the last downlink scheduling allocation was targeted; the fourth information indicates whether the last downlink scheduling allocation is for unicast transmission or multicast transmission; the terminal has at least one RNTI for multicast transmissions.
  • first information the first information represents The RNTI targeted for the current downlink scheduling allocation
  • the second information the second information indicates whether the terminal is enabled for the retransmission mode of point PTM transmission based on the function of PTP transmission
  • the third information the The third information indicates the RNTI for which the last downlink scheduling allocation was
  • the terminal for each serving cell, at each PDCCH monitoring opportunity, the terminal combines different conditions such as the enabling situation, the unicast or multicast situation of the previous scheduling, and the scrambling situation of the previous scheduling. , to determine whether the NDI is reversed, so that the base station and the terminal can have a consistent understanding of whether a PDSCH transmission is unicast or multicast, whether it is a unicast retransmission or a multicast retransmission, etc., so that when supporting multicast and unicast Efficient multicast transmission is realized under the premise of dynamically sharing the HARQ process.
  • Fig. 1 is the schematic flow chart of the method for determining the NDI of the embodiment of the present application
  • FIG. 2 is a schematic flow diagram of the HARQ process used when the application embodiment-multicast and unicast share the HARQ process;
  • FIG. 3 is a schematic flow diagram of the HARQ process used when multicast and unicast share the HARQ process in the application embodiment 2 of the present application;
  • FIG. 4 is a schematic flow diagram of the HARQ process used when multicast and unicast share the HARQ process in the application embodiment 3 of the present application;
  • FIG. 5 is a schematic flow diagram of the HARQ process used when multicast and unicast share the HARQ process in Embodiment 4 of the present application;
  • FIG. 6 is a schematic structural diagram of an NDI determination device according to an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a terminal according to an embodiment of the present application.
  • the HARQ process number HPN
  • NDI NDI
  • HPN and NDI are used to help the UE identify whether a PDSCH transmission is initial transmission or retransmission.
  • HPN the HARQ process number
  • NDI NDI
  • HPN#0 if the NDI in the DCI of this transmission is inverted compared to the NDI in the DCI of the previous transmission, this transmission is the initial transmission; if no inversion occurs, this transmission for retransmission.
  • unicast and multicast transmission can flexibly use any one of the maximum 16 HARQ processes, but this flexibility is based on certain rules, that is, a rule needs to be defined to ensure that the base station and the terminal can There is a consistent understanding of whether a physical downlink shared channel (PDSCH) transmission is unicast or multicast, whether it is unicast retransmission or multicast retransmission, etc.
  • PDSCH physical downlink shared channel
  • the terminal can Wait for a combination of different conditions to determine whether the NDI is flipped.
  • the embodiment of the present application provides a method for determining NDI, which is applied to a terminal, as shown in FIG. 1, the method includes:
  • Step 100 Determine corresponding information
  • Step 101 For a serving cell, at each PDCCH monitoring opportunity, perform the following operations:
  • the current downlink scheduling allocation is determined based on at least two of the following information Whether the NDI rollover occurs:
  • First information where the first information represents the RNTI used for the scrambling of the current downlink scheduling allocation, that is, the first information represents the RNTI for which the current downlink scheduling allocation is targeted;
  • the second information indicates whether the terminal is enabled for the retransmission mode of point PTM transmission based on the function of PTP transmission;
  • the third information represents the RNTI used for the scrambling of the last downlink scheduling assignment, that is, the third information represents the RNTI for the last downlink scheduling assignment;
  • the fourth information indicates whether the last downlink scheduling assignment is for unicast transmission or multicast transmission; the terminal has at least one RNTI for multicast transmission.
  • the terminal may be called a UE, or may be called a user or the like.
  • the corresponding information includes the first information, second information, third information and fourth information in step 101.
  • the solution provided in the embodiment of the present application is a method for using a HARQ process. Therefore, the solution in the embodiment of the present application is specifically executed by a medium access control (MAC) entity of the terminal.
  • MAC medium access control
  • one MAC entity of the terminal has at least one C-RNTI, one or more group radio network temporary identifiers (G-RNTI) (assumed to be G-RNTI-1 ⁇ G-RNTI-N, typically corresponding to Multicast service 1 to multicast service N).
  • G-RNTI group radio network temporary identifiers
  • the downlink scheduling assignment for the serving cell may also be referred to as the PDCCH for the serving cell, or the DCI for the serving cell, or the downlink assignment for the serving cell (in English, it may be expressed as downlink assignment ), which is not limited in this embodiment of the present application.
  • the first information may also be understood as a radio network temporary identifier (RNTI) representing the MAC entity used for local scheduling and scrambling.
  • RNTI radio network temporary identifier
  • the current scheduling allocation is scrambled based on a certain G-RNTI of the MAC entity, that is, the first information indicates that the current downlink scheduling allocation is the terminal's first multi-purpose
  • the RNTI for broadcast transmission (the RNTI for multicast transmission can also be called G-RNTI), in this case, there are the following HARQ process usage methods:
  • the retransmission method for PTM transmission (which may be the initial transmission) may be based on the function of PTP transmission (it can also be understood that the terminal does not It is possible to use PTP for retransmission for PTM transmission, for example, the network side does not configure unicast services for the terminal for a period of time), and the previous downlink scheduling assignment for the first HARQ process is based on the C- If the RNTI is scrambled, it is considered that the NDI allocated by the current downlink scheduling is reversed. At this time, no matter what the actual value of the NDI in the DCI of the current downlink scheduling allocation is, the NDI allocated by the current downlink scheduling is considered to be reversed.
  • the non-enabled retransmission mode for PTM transmission can be based on the function of PTP transmission, which may be the default behavior of the terminal (such as pre-specifying the behavior of the terminal), that is, no network side Any indication (such as any RRC configuration message indication), the default behavior of the terminal is that it does not support the retransmission mode for PTM transmission and can be based on PTP transmission.
  • the default behavior of the terminal such as pre-specifying the behavior of the terminal
  • no network side Any indication such as any RRC configuration message indication
  • the non-enabled retransmission mode for PTM transmission can be based on the function of PTP transmission, and can also be based on an indication on the network side (for example, through an RRC configuration message indication), and this indication can be explicit or implicit; example Specifically, the RRC configuration message instructing the terminal to disable the retransmission mode for PTM transmission may be based on the function of PTP transmission.
  • the terminal is not enabled for ACK/NACK based HARQ feedback, thus implicitly indicates that the terminal disables the function that the retransmission mode for PTM transmission can be based on PTP transmission.
  • the method may also include:
  • the second information displayed or implicitly indicated by the network side is received.
  • the terminal receives the second information explicitly or implicitly indicated by the network side through RRC signaling.
  • the third information indicates that the last downlink scheduling allocation is for the C-RNTI
  • the fourth information indicates that when the last downlink scheduling allocation is for unicast transmission, it is determined that the NDI of the current downlink scheduling allocation is reversed.
  • the retransmission method for PTM transmission (which may be the initial transmission) may be based on the function of PTP transmission (it can also be understood that the terminal has It is possible to use PTP for retransmission for PTM transmission, for example, the network side configures unicast service for the terminal within a period of time), and the previous downlink scheduling assignment for the first HARQ process is based on the C-RNTI of the MAC entity scrambled, and if the previous downlink scheduling allocation is for unicast services instead of multicast services, it is considered that the NDI of the DCI in this downlink scheduling allocation has been reversed. At this time, regardless of the NDI in the DCI of this downlink scheduling allocation The actual value of is considered that the NDI allocated by this downlink scheduling has been reversed.
  • the enabled retransmission mode for PTM transmission can be based on the function of PTP transmission, which may be the default behavior of the terminal (for example, the behavior of the terminal is specified in advance), that is, it does not require the network side Any indication (such as any RRC configuration message indication), the default behavior of the terminal is to support the retransmission mode for the PTM initial transmission can be based on the PTP transmission.
  • the function of PTP transmission which may be the default behavior of the terminal (for example, the behavior of the terminal is specified in advance), that is, it does not require the network side Any indication (such as any RRC configuration message indication), the default behavior of the terminal is to support the retransmission mode for the PTM initial transmission can be based on the PTP transmission.
  • the enabled retransmission mode for PTM transmission can be based on the function of PTP transmission, and can also be based on an indication on the network side (for example, through an RRC configuration message indication), and this indication can be explicit or implicit; example Specifically, the RRC configuration message indicates that the terminal enables the retransmission mode for PTM transmission based on the function of PTP transmission. Through the RRC configuration message, the terminal is enabled with ACK/NACK based HARQ feedback, thereby implicitly indicating The terminal is enabled with the function that the retransmission mode for the initial PTM transmission can be based on the PTP transmission.
  • the method may also include:
  • the second information displayed or implicitly indicated by the network side is received.
  • the terminal receives the second information explicitly or implicitly indicated by the network side through RRC signaling.
  • a typical method for distinguishing whether the downlink scheduling allocation of the C-RNTI used for cyclic redundancy check (CRC) scrambling is for unicast services or for multicast services is:
  • the unicast or multicast (UnicastOrMulticast) field in DCI is 1 bit, "0" indicates unicast services, and "1" Indicates a multicast service; for another example, UnicastOrMulticast in DCI is 2 bits, "00" indicates a unicast service, "01” indicates a multicast service 1, "10” indicates a multicast service 2, and "11” indicates a multicast service 3. Based on this, the terminal obtains the third information.
  • the third information indicates that the last downlink scheduling allocation is the second RNTI for multicast transmission of the terminal, it is determined that the NDI of the current downlink scheduling allocation has been reversed; the second An RNTI for multicast transmission is different from the second RNTI for multicast transmission.
  • the MAC entity has multiple G-RNTIs (assumed to be G-RNTI-1 ⁇ G-RNTI-N, typically corresponding to multicast service 1 ⁇ multicast service N), if the first HARQ If the previous downlink scheduling allocation of the process was scrambled based on another G-RNTI of the MAC entity (that is, it is different from this G-RNTI-1), it is considered that the NDI of the DCI for this downlink scheduling allocation has flipped, and at this time , regardless of the actual value of the NDI in the DCI allocated by the downlink scheduling this time), it is considered that the NDI allocated by the downlink scheduling this time has been reversed.
  • the third information indicates that the last downlink scheduling assignment is for the C-RNTI
  • the fourth information indicates that when the last downlink scheduling allocation is for the second multicast transmission, it is determined that the NDI of the current downlink scheduling allocation has been reversed; the first multicast transmission and the second multicast transmission different.
  • the MAC entity has multiple G-RNTIs (assumed to be G-RNTI-1 ⁇ G-RNTI-N, typically corresponding to multicast service 1 ⁇ multicast service N), if the terminal is used
  • the retransmission method for PTM transmission can be based on the function of PTP transmission (it can also be considered that it is possible to use PTP for retransmission for PTM transmission within a period of time (can be determined according to needs), for example, the network side is all
  • the terminal is configured with a unicast service)
  • the previous downlink scheduling allocation for the first HARQ process is scrambled based on the C-RNTI of the MAC entity, and if the previous downlink scheduling allocation is based on other G-RNTI
  • the NDI of the DCI for this downlink scheduling assignment has been reversed. At this time, no matter what the actual value of NDI in
  • the enabled retransmission mode for PTM transmission can be based on the function of PTP transmission, which may be the default behavior of the terminal (for example, the behavior of the terminal is specified in advance), that is, it does not require the network side Any indication (such as any RRC configuration message indication), the default behavior of the terminal is to support the retransmission mode for the PTM initial transmission can be based on the PTP transmission.
  • the function of PTP transmission which may be the default behavior of the terminal (for example, the behavior of the terminal is specified in advance), that is, it does not require the network side Any indication (such as any RRC configuration message indication), the default behavior of the terminal is to support the retransmission mode for the PTM initial transmission can be based on the PTP transmission.
  • the enabled retransmission mode for PTM transmission can be based on the function of PTP transmission, and can also be based on an indication on the network side (for example, through an RRC configuration message indication), and this indication can be explicit or implicit; example Specifically, the RRC configuration message indicates that the terminal enables the retransmission mode for PTM transmission based on the function of PTP transmission. Through the RRC configuration message, the terminal is enabled with ACK/NACK based HARQ feedback, thereby implicitly indicating The terminal is enabled with the function that the retransmission mode for the initial PTM transmission can be based on the PTP transmission.
  • the method may also include:
  • the second information displayed or implicitly indicated by the network side is received.
  • the terminal receives the second information explicitly or implicitly indicated by the network side through RRC signaling.
  • a typical method for distinguishing whether the downlink scheduling allocation of the C-RNTI used for CRC scrambling is for unicast services or multicast services is: the corresponding downlink scheduling
  • the UnicastOrMulticast field in DCI is 1 bit, "0" indicates unicast services, and "1" indicates multicast services; for another example, UnicastOrMulticast in DCI is 2 bits, "00” indicates a unicast service, "01” indicates a multicast service 1, "10” indicates a multicast service 2, and "11” indicates a multicast service 3, and the terminal obtains the third information accordingly.
  • the current scheduling allocation is based on the C-RNTI of the MAC entity, that is, the first information indicates that the current downlink scheduling allocation is for the C-RNTI.
  • the first information indicates that the current downlink scheduling allocation is for the C-RNTI.
  • the NDI of the DCI for this downlink scheduling allocation is reversed.
  • the actual value of the NDI in the DCI allocated by the downlink scheduling this time is considered to be an inversion of the NDI allocated by the downlink scheduling this time.
  • a typical method of distinguishing whether the downlink scheduling allocation of the C-RNTI used for CRC scrambling is for unicast services or multicast services is: the corresponding downlink scheduling allocation
  • There is an indication field in which is used to indicate whether it is for unicast services or multicast services.
  • the UnicastOrMulticast field in DCI is 1 bit, "0" indicates unicast services, and "1" indicates multicast services;
  • another example is UnicastOrMulticast in DCI is 2 bits , "00" indicates a unicast service, "01” indicates a multicast service 1, "10” indicates a multicast service 2, and "11” indicates a multicast service 3, and the terminal obtains the third information accordingly.
  • the third information indicates that the last downlink scheduling allocation is for the C-RNTI
  • the fourth information indicates that when the last downlink scheduling allocation is for multicast transmission, it is determined that the NDI of the current downlink scheduling allocation is reversed.
  • the terminal is enabled to retransmit the PTM transmission (which can be the initial transmission) based on the function of the PTP transmission (it can also be understood that the terminal may Use PTP to perform retransmission for PTM transmission, for example, the network side configures unicast service for the terminal within a period of time), if the previous downlink scheduling assignment for the first HARQ process is based on the C-RNTI of the MAC entity Scrambled, and if the previous downlink scheduling allocation is for multicast services instead of unicast services, it is considered that the NDI of the DCI for this downlink scheduling allocation has been reversed, regardless of the actual value of NDI in the DCI for this downlink scheduling allocation It is considered that the NDI allocated by this downlink scheduling has been reversed.
  • the enabled retransmission mode for PTM transmission can be based on the function of PTP transmission, which may be the default behavior of the terminal (for example, the behavior of the terminal is specified in advance), that is, it does not require the network side Any indication (such as any RRC configuration message indication), the default behavior of the terminal is to support the retransmission mode for the PTM initial transmission can be based on the PTP transmission.
  • the function of PTP transmission which may be the default behavior of the terminal (for example, the behavior of the terminal is specified in advance), that is, it does not require the network side Any indication (such as any RRC configuration message indication), the default behavior of the terminal is to support the retransmission mode for the PTM initial transmission can be based on the PTP transmission.
  • the enabled retransmission mode for PTM transmission can be based on the function of PTP transmission, and can also be based on an indication on the network side (for example, through an RRC configuration message indication), and this indication can be explicit or implicit; example Specifically, the RRC configuration message indicates that the terminal enables the retransmission mode for PTM transmission based on the function of PTP transmission. Through the RRC configuration message, the terminal is enabled with ACK/NACK based HARQ feedback, thereby implicitly indicating The terminal is enabled with the function that the retransmission mode for the initial PTM transmission can be based on the PTP transmission.
  • the method may also include:
  • the second information displayed or implicitly indicated by the network side is received.
  • the terminal receives the second information explicitly or implicitly indicated by the network side through RRC signaling.
  • the corresponding downlink scheduling allocation has An indication field is used to indicate whether it is for unicast services or multicast services.
  • the UnicastOrMulticast field in DCI is 1 bit, "0" indicates unicast services, and "1" indicates multicast services; for another example, UnicastOrMulticast in DCI is 2 bits, " 00" indicates a unicast service, "01” indicates a multicast service 1, "10” indicates a multicast service 2, and "11” indicates a multicast service 3, and the terminal obtains the third information accordingly.
  • the terminal performs the following operations: If a downlink scheduling allocation for the serving cell is received at a PDCCH monitoring opportunity, and this time
  • the terminal for each serving cell, at each PDCCH monitoring opportunity, the terminal combines different conditions such as the enabling situation, the unicast or multicast situation of the previous scheduling, and the scrambling situation of the previous scheduling. , to determine whether the NDI is reversed, so that the base station and the terminal can have a consistent understanding of whether a PDSCH transmission is unicast or multicast, whether it is a unicast retransmission or a multicast retransmission, etc., so that when supporting multicast and On the premise that unicast dynamically shares the HARQ process, efficient multicast transmission is realized.
  • MCS multicast and broadcast service
  • NDI can indicate 0 or 1, regardless of whether it indicates 0 or 1, UE1 and UE2 Both UE2 thinks that the NDI has been reversed this time, and then UE1 and UE2 will feed back the ACK/NACK for the PTM initial transmission of the multicast service at an appropriate time; after that, at time t2, UE1 and UE2 respectively perform PTP for the multicast service.
  • the corresponding DCI indicates that the HPN of the corresponding HARQ process is HPN#0.
  • the NDI in the DCI at this time should remain unchanged from the NDI used in the initial transmission. A rollover occurs.
  • NDI 1.
  • the NDI in the DCI at this time should remain the same as the NDI used in the initial transmission. change, that is, no flipping occurs.
  • UE1 and UE2 belong to MBS group 1, receive multicast service 1, use G-RNTI1 for TM transmission, assume that UE1 and UE3 belong to MBS group 2 at the same time, receive multicast service 2, and use G-RNTI2 for PTM transmission;
  • UE1 and UE3 then receive the PTM initial transmission of multicast service 2 at time t1 (G-RNTI2, the HPN of the corresponding HARQ process is HPN#0), at this time NDI It can indicate 0 or 1.
  • UE1 and UE3 will feed back ACK/NACK for multicast service 2 at an appropriate time;
  • G-RNTI1 the HPN of the corresponding HARQ process is HPN#0
  • NDI is reversed this time.
  • UE1 and UE2 belong to an MBS group 1, receive multicast service 1, use G-RNTI1 for PTM transmission, assume that UE1 and UE3 belong to MBS group 2 at the same time, receive multicast service 2, and use G-RNTI2 for PTM transmission ;
  • UE1 and UE3 then receive the PTM initial transmission of multicast service 2 at time t1 (G-RNTI2, the HPN of the corresponding HARQ process is HPN#0), at this time , NDI can indicate 0 or 1.
  • NDI For UE1, no matter whether NDI indicates 0 or 1, it is considered that this NDI has been reversed, and then UE1 and UE3 will feed back ACK/NACK for multicast service 2 at an appropriate time (this step It is the same as the application embodiment 3 before); after that, UE1 receives the PTP retransmission of multicast service 1 at time t2 (G-RNTI1, the HPN of the corresponding HARQ process is HPN#0), according to the related unicast retransmission
  • UE1 regardless of the
  • the embodiment of the present application also provides an NDI determination device, which is set on the terminal, as shown in Figure 6, the device includes:
  • the processing unit 601 is configured to perform the following operations at each PDCCH monitoring opportunity for a serving cell:
  • the current downlink scheduling allocation is determined based on at least two of the following information Whether the NDI rollover occurs:
  • First information where the first information represents the RNTI for which the current downlink scheduling allocation is targeted;
  • the second information characterizes whether the terminal is enabled for the retransmission mode of PTM transmission based on the function of PTP transmission;
  • third information where the third information represents the RNTI targeted by the last downlink scheduling assignment
  • the fourth information indicates whether the last downlink scheduling assignment is for unicast transmission or multicast transmission; the terminal has at least one RNTI for multicast transmission.
  • the device may also include:
  • the determining unit 602 is configured to determine corresponding information; the corresponding information includes first information, second information, third information, and fourth information.
  • the determining unit 602 is configured to receive the second information explicitly or implicitly indicated by the network side.
  • the determining unit 602 is configured to receive the second information explicitly or implicitly indicated by the network side through RRC signaling.
  • processing unit 601 is configured to:
  • the second information indicates that the terminal is not enabled for retransmission of PTM transmission
  • the method can be based on the PTP transmission function, and when the third information indicates that the last downlink scheduling allocation is for the C-RNTI, it is determined that the NDI of the current downlink scheduling allocation is reversed.
  • processing unit 601 is configured to:
  • the second information indicates that the terminal is enabled for retransmission of PTM transmission
  • the method can be based on the function of PTP transmission, when the third information indicates that the last downlink scheduling allocation is for C-RNTI, and the fourth information indicates that the last downlink scheduling allocation is for unicast transmission, determine the current The NDI assigned by the next downlink scheduling is reversed.
  • processing unit 601 is configured to:
  • the first information indicates that the current downlink scheduling allocation is the first RNTI for multicast transmission for the terminal
  • the third information indicates that the last downlink scheduling allocation is for the terminal
  • the second RNTI used for multicast transmission it is determined that the NDI allocated for downlink scheduling this time has been reversed; the first RNTI used for multicast transmission is different from the second RNTI used for multicast transmission.
  • processing unit 601 is configured to:
  • the second information indicates that the terminal is enabled for retransmission of PTM transmission
  • the method can be based on the function of PTP transmission, when the third information indicates that the last downlink scheduling allocation is for C-RNTI, and the fourth information indicates that the last downlink scheduling allocation is for the second multicast transmission, determine the The NDI assigned by the downlink scheduling this time is reversed; the first multicast transmission is different from the second multicast transmission.
  • processing unit 601 is configured to:
  • the first information indicates that the current downlink scheduling allocation is for a C-RNTI
  • the third information indicates that the last downlink scheduling allocation is for an RNTI for multicast transmission
  • processing unit 601 is configured to:
  • the first information indicates that the current downlink scheduling assignment is for C-RNTI
  • the second information indicates that the terminal is enabled with a retransmission mode for PTM transmission based on PTP transmission
  • the third information indicates that the last downlink scheduling allocation is for C-RNTI
  • the fourth information indicates that the last downlink scheduling allocation is for multicast transmission
  • the determining unit 602 may be implemented by a processor in the NDI determining device combined with a communication interface, and the processing unit 601 may be implemented by a processor in the NDI determining device.
  • the NDI determination device when the NDI determination device provided in the above-mentioned embodiment determines NDI, it only uses the division of the above-mentioned program modules for illustration. In practical applications, the above-mentioned processing allocation can be completed by different program modules according to needs. The internal structure of the device is divided into different program modules to complete all or part of the processing described above.
  • the device for determining NDI provided by the above embodiment is based on the same idea as the embodiment of the method for determining NDI, and its specific implementation process can be found in the embodiment of the method, and will not be repeated here.
  • the embodiment of the present application also provides a terminal, as shown in FIG. 7, the terminal 700 includes:
  • Communication interface 701 capable of information interaction with the network side
  • the processor 702 is connected to the communication interface 701 to implement information interaction with the network side, and is configured to execute the method provided by one or more technical solutions on the terminal side when running the computer program;
  • the processor 702 is configured to perform the following operations at each PDCCH monitoring opportunity for a serving cell:
  • the current downlink scheduling allocation is determined based on at least two of the following information Whether the NDI rollover occurs:
  • First information where the first information represents the RNTI for which the current downlink scheduling allocation is targeted;
  • the second information characterizes whether the terminal is enabled for the retransmission mode of PTM transmission based on the function of PTP transmission;
  • third information where the third information represents the RNTI targeted by the last downlink scheduling assignment
  • the fourth information indicates whether the last downlink scheduling assignment is for unicast transmission or multicast transmission; the terminal has at least one RNTI for multicast transmission.
  • the processor 702 is further configured to determine corresponding information; the corresponding information includes first information, second information, third information, and fourth information.
  • the processor 702 is configured to receive the second information explicitly or implicitly indicated by the network side through the communication interface 701 .
  • the processor 702 is configured to use the communication interface 701 to receive the second information explicitly or implicitly indicated by the network side through RRC signaling.
  • the processor 702 is configured to:
  • the second information indicates that the terminal is not enabled for retransmission of PTM transmission
  • the method can be based on the PTP transmission function, and when the third information indicates that the last downlink scheduling allocation is for the C-RNTI, it is determined that the NDI of the current downlink scheduling allocation is reversed.
  • the processor 702 is configured to:
  • the second information indicates that the terminal is enabled for retransmission of PTM transmission
  • the method can be based on the function of PTP transmission, when the third information indicates that the last downlink scheduling allocation is for C-RNTI, and the fourth information indicates that the last downlink scheduling allocation is for unicast transmission, determine the current The NDI assigned by the next downlink scheduling is reversed.
  • the processor 702 is configured to:
  • the first information indicates that the current downlink scheduling allocation is the first RNTI for multicast transmission for the terminal
  • the third information indicates that the last downlink scheduling allocation is for the terminal
  • the second RNTI used for multicast transmission it is determined that the NDI allocated for downlink scheduling this time has been reversed; the first RNTI used for multicast transmission is different from the second RNTI used for multicast transmission.
  • the processor 702 is configured to:
  • the second information indicates that the terminal is enabled for retransmission of PTM transmission
  • the method can be based on the function of PTP transmission, when the third information indicates that the last downlink scheduling allocation is for C-RNTI, and the fourth information indicates that the last downlink scheduling allocation is for the second multicast transmission, determine the The NDI assigned by the downlink scheduling this time is reversed; the first multicast transmission is different from the second multicast transmission.
  • the processor 702 is configured to:
  • the first information indicates that the current downlink scheduling allocation is for a C-RNTI
  • the third information indicates that the last downlink scheduling allocation is for an RNTI for multicast transmission
  • the processor 702 is configured to:
  • the first information indicates that the current downlink scheduling assignment is for C-RNTI
  • the second information indicates that the terminal is enabled with a retransmission mode for PTM transmission based on PTP transmission
  • the third information indicates that the last downlink scheduling allocation is for C-RNTI
  • the fourth information indicates that the last downlink scheduling allocation is for multicast transmission
  • bus system 704 is configured to enable connection communication between these components.
  • bus system 704 also includes a power bus, a control bus and a status signal bus.
  • the various buses are labeled as bus system 704 in FIG. 7 .
  • the memory 703 in the embodiment of the present application is configured to store various types of data to support the operation of the terminal 700 .
  • Examples of such data include: any computer programs for operating on terminal 700 .
  • the methods disclosed in the foregoing embodiments of the present application may be applied to the processor 702 or implemented by the processor 702 .
  • the processor 702 may be an integrated circuit chip, which has a signal processing capability. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 702 or instructions in the form of software.
  • the aforementioned processor 702 may be a general-purpose processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like.
  • DSP Digital Signal Processor
  • the processor 702 may implement or execute various methods, steps, and logic block diagrams disclosed in the embodiments of the present application.
  • a general purpose processor may be a microprocessor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor.
  • the software module may be located in a storage medium, and the storage medium is located in the memory 703, and the processor 702 reads the information in the memory 703, and completes the steps of the foregoing method in combination with its hardware.
  • the terminal 700 may be implemented by one or more Application Specific Integrated Circuits (ASIC, Application Specific Integrated Circuit), DSP, Programmable Logic Device (PLD, Programmable Logic Device), Complex Programmable Logic Device (CPLD, Complex Programmable Logic Device), field programmable gate array (FPGA, Field-Programmable Gate Array), general-purpose processor, controller, microcontroller (MCU, Micro Controller Unit), microprocessor (Microprocessor), or other electronic components An implementation configured to perform the preceding method.
  • ASIC Application Specific Integrated Circuit
  • DSP Programmable Logic Device
  • PLD Programmable Logic Device
  • CPLD Complex Programmable Logic Device
  • FPGA Field-Programmable Gate Array
  • controller controller
  • microcontroller MCU, Micro Controller Unit
  • microprocessor Microprocessor
  • the memory 703 in this embodiment of the present application may be a volatile memory or a nonvolatile memory, and may also include both volatile and nonvolatile memories.
  • the non-volatile memory can be read-only memory (ROM, Read Only Memory), programmable read-only memory (PROM, Programmable Read-Only Memory), erasable programmable read-only memory (EPROM, Erasable Programmable Read-Only Memory) Only Memory), Electrically Erasable Programmable Read-Only Memory (EEPROM, Electrically Erasable Programmable Read-Only Memory), Magnetic Random Access Memory (FRAM, ferromagnetic random access memory), Flash Memory (Flash Memory), Magnetic Surface Memory , CD, or CD-ROM (Compact Disc Read-Only Memory); magnetic surface storage can be disk storage or tape storage.
  • the volatile memory may be random access memory (RAM, Random Access Memory), which is used as an external cache.
  • RAM random access memory
  • RAM Random Access Memory
  • many forms of RAM are available, such as Static Random Access Memory (SRAM, Static Random Access Memory), Synchronous Static Random Access Memory (SSRAM, Synchronous Static Random Access Memory), Dynamic Random Access Memory Memory (DRAM, Dynamic Random Access Memory), synchronous dynamic random access memory (SDRAM, Synchronous Dynamic Random Access Memory), double data rate synchronous dynamic random access memory (DDRSDRAM, Double Data Rate Synchronous Dynamic Random Access Memory), enhanced Synchronous Dynamic Random Access Memory (ESDRAM, Enhanced Synchronous Dynamic Random Access Memory), Synchronous Link Dynamic Random Access Memory (SLDRAM, SyncLink Dynamic Random Access Memory), Direct Memory Bus Random Access Memory (DRRAM, Direct Rambus Random Access Memory ).
  • SRAM Static Random Access Memory
  • SSRAM Synchronous Static Random Access Memory
  • DRAM Dynamic Random Access Memory
  • SDRAM Synchronous Dynamic Random Access Memory
  • the embodiment of the present application also provides a storage medium, that is, a computer storage medium, specifically a computer-readable storage medium, for example, including a memory 703 storing a computer program, and the above-mentioned computer program can be executed by the processor of the terminal 700 Step 702 is executed to complete the steps described in the foregoing method.
  • the computer-readable storage medium can be memories such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disc, or CD-ROM.

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Abstract

本申请公开了一种NDI确定方法、装置、终端及存储介质。其中，方法包括：针对一个服务小区，在每个PDCCH监听时机，终端执行以下操作：如果在一个PDCCH监听时机接收到一个针对服务小区的下行调度分配，且本次的下行调度分配是基于第一HARQ进程时，至少基于以下信息至少之二确定本次的下行调度分配的NDI是否发生翻转：第一信息，第一信息表征本次的下行调度分配所针对的RNTI；第二信息，第二信息表征终端是否被使能针对PTM传输的重传方式能够基于PTP传输的功能；第三信息，第三信息表征上一次的下行调度分配所针对的RNTI；第四信息，第四信息表征上一次的下行调度分配是针对单播传输或是针对多播传输；终端具有至少一个用于多播传输的RNTI。

Description

NDI确定方法、装置、终端及存储介质
相关申请的交叉引用
本申请基于申请号为202110856336.8、申请日为2021年07月28日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本申请涉及无线通信领域，尤其涉及一种新数据指示符(NDI，New Data Indicator)确定方法、装置、终端及存储介质。
背景技术
对于支持多播传输的用户来说，如何在不增加用户的混合自动重传请求进程总个数(英文可以表达为HARQ process number)的情况下高效地支持单播和多播传输是一个需要研究的重要问题。相关技术中，新空口(NR)系统中用户设备(UE)每个小区(cell)支持的HARQ进程总个数是可配置的，且最大支持16个HARQ进程(英文可以表达为HARQ process)。当用户同时支持单播和多播传输时，目前主流的趋势是不对单播和多播可用的HARQ进程总个数进行限制，也即单播和多播传输可以灵活使用最大16个HARQ进程中的任何一个。
然而，如何在单播和多播传输灵活使用HARQ进程时保证终端和基站对单播和多播传输有一致的理解是目前亟待解决的问题。
发明内容
为解决相关技术问题，本申请实施例提供一种NDI确定方法、装置、终端及存储介质。
本申请实施例的技术方案是这样实现的：
本申请实施例提供一种NDI确定方法，应用于终端，包括：
针对一个服务小区，在每个物理下行控制信道(PDCCH)监听时机，执行以下操作：
如果在一个PDCCH监听时机接收到一个针对所述服务小区的下行调度分配，且本次的下行调度分配是基于第一HARQ进程时，至少基于以下信息至少之二确定所述本次的下行调度分配的NDI是否发生翻转：
第一信息，所述第一信息表征所述本次的下行调度分配所针对的无线网络临时标识(RNTI)；
第二信息，所述第二信息表征所述终端是否被使能针对点到多点(PTM)传输的重传方式能够基于点到点(PTP)传输的功能；
第三信息，所述第三信息表征上一次的下行调度分配所针对的RNTI；
第四信息，所述第四信息表征上一次的下行调度分配是针对单播传输或是针对多播传输；所述终端具有至少一个用于多播传输的RNTI。
上述方案中，所述确定所述本次的下行调度分配的NDI是否发生翻转，包括：
当所述第一信息表征所述本次的下行调度分配是针对所述终端的第一用于多播传输的RNTI，所述第二信息表征所述终端未被使能针对PTM传输的重传方式能够基于PTP传输的功能，且所述第三信息表征上一次的下行调度分配是针对小区无线网络临时标识(C-RNTI)扰时，确定所述本次的下行调度分配的NDI发生翻转。
上述方案中，所述确定所述本次的下行调度分配的NDI是否发生翻转，包括：
当所述第一信息表征所述本次的下行调度分配是针对所述终端的第一用于多播传输的RNTI，所述第二信息表征所述终端被使能了针对PTM传输的重传方式能够基于PTP传输的功能，所述第三信息表征上一次的下行调度分配是针对C-RNTI，且所述第四信息表征上一次的下行调度分配是针对单播传输时，确定所述本次的下行调度分配的NDI发生翻转。
上述方案中，所述确定所述本次的下行调度分配的NDI是否发生翻转，包括：
当所述第一信息表征所述本次的下行调度分配是针对所述终端的第一用于多播传输的RNTI，且所述第三信息表征上一次的下行调度分配是针对所述终端的第二用于多播传输的RNTI时，确定所述本次的下行调度分配的NDI发生翻转；所述第一用于多播传输的RNTI与所述第二用于多播传输的RNTI不同。
上述方案中，所述本次的下行调度分配针对第一多播传输，所述确定所述本次的下行调度分配的NDI是否发生翻转，包括：
当所述第一信息表征所述本次的下行调度分配是针对所述终端的第一用于多播传输的RNTI，所述第二信息表征所述终端被使能了针对PTM传输的重传方式能够基于PTP传输的功能，所述第三信息表征上一次的下行调度分配是针对C-RNTI，且所述第四信息表征上一次的下行调度分配是针对第二多播传输时，确定所述本次的下行调度分配的NDI发生翻转；所述第一多播传输与所述第二多播传输不同。
上述方案中，所述确定所述本次的下行调度分配的NDI是否发生翻转，包括：
当所述第一信息表征所述本次的下行调度分配是针对C-RNTI，且所述第三信息表征上一次的下行调度分配是针对一个用于多播传输的RNTI时，确定所述本次的下行调度分配的NDI发生翻转。
上述方案中，所述确定所述本次的下行调度分配的NDI是否发生翻转，包括：
当所述第一信息表征所述本次的下行调度分配是针对C-RNTI，所述第二信息表征所述终端被使能了针对PTM传输的重传方式能够基于PTP传输的功能，所述第三信息表征上一次的下行调度分配是针对C-RNTI，且所述第四信息表征上一次的下行调度分配是针对多播传输时，确定所述本次的下行调度分配的NDI发生翻转。
上述方案中，所述方法还包括：
接收网络侧显示或隐式指示的第二信息。
上述方案中，通过无线资源控制(RRC)信令接收所述网络侧显示或隐式指示的第二信息。
本申请实施例还提供一种NDI确定装置，包括：
处理单元，配置为针对一个服务小区，在每个PDCCH监听时机，执行以下操作：
如果在一个PDCCH监听时机接收到一个针对所述服务小区的下行调度分配，且本次的下行调度分配是基于第一HARQ进程时，至少基于以下信息至少之二确定所述本次的下行调度分配的NDI是否发生翻转：
第一信息，所述第一信息表征所述本次的下行调度分配所针对的RNTI；
第二信息，所述第二信息表征终端是否被使能针对PTM传输的重传方式能够基于PTP传输的功能；
第三信息，所述第三信息表征上一次的下行调度分配所针对的RNTI；
第四信息，所述第四信息表征上一次的下行调度分配是针对单播传输或是针对多播传输；所述终端具有至少一个用于多播传输的RNTI。
本申请实施例还提供一种终端，包括：处理器及通信接口；其中，
所述处理器，配置为针对一个服务小区，在每个PDCCH监听时机，执行以下操作：
如果在一个PDCCH监听时机接收到一个针对所述服务小区的下行调度分配，且本次的下行调度分配是基于第一HARQ进程时，至少基于以下信息至少之二确定所述本次的下行调度分配的NDI是否发生翻转：
第一信息，所述第一信息表征所述本次的下行调度分配所针对的RNTI；
第二信息，所述第二信息表征所述终端是否被使能针对PTM传输的重传方式能够基于PTP传输的功能；
第三信息，所述第三信息表征上一次的下行调度分配所针对的RNTI；
第四信息，所述第四信息表征上一次的下行调度分配是针对单播传输或是针对多播传输；所述终端具有至少一个用于多播传输的RNTI。
本申请实施例还提供一种终端，包括：处理器和配置为存储能够在处理器上运行的计算机程序的存储器，
其中，所述处理器配置为运行所述计算机程序时，执行上述任一方法的步骤。
本申请实施例还提供一种存储介质，其上存储有计算机程序，所述计算机程序被处理器执行时实现上述任一方法的步骤。
本申请实施例提供的NDI确定方法、装置、终端及存储介质，针对一个服务小区，在每个PDCCH监听时机，终端执行以下操作：如果在一个PDCCH监听时机接收到一个针对所述服务小区的下行调度分配，且本次的下行调度分配是基于第一HARQ进程时，至少基于以下信息至少之二确定所述本次的下行调度分配的NDI是否发生翻转：第一信息，所述第一信息表征所述本次的下行调度分配所针对的RNTI；第二信息，所述第二信息表征所述终端是否被使能针对点PTM传输的重传方式能够基于PTP传输的功能；第三信息，所述第三信息表征上一次的下行调度分配所针对的RNTI；第四信息，所述第四信息表征上一次的下行调度分配是针对单播传输或是针对多播传输；所述终端具有至少一个用于多播传输的RNTI。本申请实施例提供的方案，对于每个服务小区，在每个PDCCH监听时机，终端根据使能情况、前一次调度的单播或者多播情况、前一次调度的加扰情况等不同条件的组合，判断NDI是否发生翻转，使得基站和终端能够对一次PDSCH传输是单播或是多播、是单播的重传或是多播的重传等有一致的理解，从而在支持多播和单播动态共享HARQ进程的前提下，实现了高效的多播传输。
附图说明
图1为本申请实施例NDI确定的方法流程示意图；
图2为本申请应用实施例一多播和单播共享HARQ进程时HARQ进程使用的流程示意图；
图3为本申请应用实施例二多播和单播共享HARQ进程时HARQ进程使用的流程示意图；
图4为本申请应用实施例三多播和单播共享HARQ进程时HARQ进程使用的流程示意图；
图5为本申请应用实施例四多播和单播共享HARQ进程时HARQ进程使用的流程示意图；
图6为本申请实施例NDI确定装置结构示意图；
图7为本申请实施例终端结构示意图。
具体实施方式
下面结合附图及实施例对本申请再作进一步详细的描述。
一方面，相关技术中，在NR系统中，对于单播传输来说，下行控制信息(DCI)中有两个域，分别是HARQ进程序号(HPN)(可以理解为HARQ进程编号，即HARQ进程ID)和NDI，HPN和NDI用于帮助UE识别一次PDSCH传输是初传或是重传。对于一个给定HPN(如HPN#0)，如果本次传输的DCI中的NDI相比前一次传输的DCI中NDI发生翻转，则本次传输为初传，如果未发生翻转，则本次传输为重传。
另一方面，单播和多播传输可以灵活使用最大16个HARQ进程中的任何一个，但是这种灵活性是建立在一定的规则基础上，也就是需要定义一种规则来保证基站和终端能够对某一次物理下行共享信道(PDSCH)传输是单播或是多播、是单播的重传或是多播的重传等有一致的理解。
基于此，在本申请的各种实施例中，对于每个服务小区，在每个PDCCH监听时机，终端根据使能情况、前一次调度的单播或者多播情况、前一次调度的加扰情况等不同条件的组合，判断NDI是否发生翻转。
本申请实施例提供了一种NDI确定方法，应用于终端，如图1所示，该方法包括：
步骤100：确定相应信息；
步骤101：针对一个服务小区，在每个PDCCH监听时机，执行以下操作：
如果在一个PDCCH监听时机接收到一个针对所述服务小区的下行调度分配，且本次的下行调度分配是基于第一HARQ进程时，至少基于以下信息至少之二确定所述本次的下行调度分配的NDI是否发生翻转：
第一信息，所述第一信息表征所述本次的下行调度分配加扰所使用的RNTI，即所述第一信息表征所述本次的下行调度分配所针对的RNTI；
第二信息，所述第二信息表征所述终端是否被使能针对点PTM传输的重传方式能够基于PTP传输的功能；
第三信息，所述第三信息表征上一次的下行调度分配加扰所使用的RNTI，即所述第三信息表征上一次的下行调度分配所针对的RNTI；
第四信息，所述第四信息表征上一次的下行调度分配是针对单播传输或是针对多播传输；所述终端具有至少一个用于多播传输的RNTI。
其中，实际应用时，所述终端可以称为UE，也可以称为用户等。
在步骤100中，所述相应信息包含步骤101中的第一信息、第二信息、第三信息和第四信息。
本申请实施例提供的方案是一种HARQ进程的使用方法，因此，本申请实施例的方案具体是由所述终端的一个媒体访问控制(MAC)实体执行的。
基于此，所述终端的一个MAC实体至少具有一个C-RNTI，一个或多个组无线网络临时标识(G-RNTI)(假设为G-RNTI-1～G-RNTI-N，典型的分别对应多播业务1～多播业务N)。
实际应用时，针对所述服务小区的下行调度分配也可以称为针对所述服务小区的PDCCH，或者针对所述服务小区的DCI，或者针对所述服务小区的下行分配(英文可以表达为downlink assignment)，本申请实施例对此不作限定。
所述第一信息也可以理解为表征本地调度分配加扰所使用的该MAC实体的无线网络临时标识(RNTI)。
实际应用时，针对该MAC实体的不同类型的RNTI，可以有以下两种情况：
第一种情况，本次调度分配是基于该MAC实体的某一G-RNTI加扰的，即所述第一信息表征所述本次的下行调度分配是终端所述终端的第一用于多播传输的RNTI(用于多播传输的RNTI也可以称为G-RNTI)，这种情况下具体有以下几种HARQ进程使用方法：
(1)当所述第二信息表征所述终端未被使能针对PTM传输的重传方式能够基于PTP传输的功能，且所述第三信息表征上一次的下行调度分配是针对C-RNTI时，确定所述本次的下行调度分配的NDI发生翻转。
也就是说，当所述终端未被使能针对PTM传输(可以是初始传输)的重传方式可以基于PTP传输的功能(也可以理解为所述终端在一段时间内(可以根据需要确定)不可能使用PTP进行针对PTM传输的重传，比如一段时间内网络侧不为所述终端配置单播业务)，且针对所述第一HARQ进程的前一次下行调度分配是基于该MAC实体的C-RNTI加扰的，则认为本次下行调度分配的NDI发生翻转，此时，无论本次下行调度分配DCI中NDI的实际值为多少，均认为本次下行调度分配的NDI发生翻转。
这里，实际应用时，所述未被使能针对PTM传输的重传方式能够基于PTP传输的功能，可以是所述终端的默认行为(比如预先规定所述终端的行为)，即不需要网络侧的任何指示(比如任何RRC配置消息指示)，所述终端的默认行为就是不支持针对PTM传输的重传方式可以基于PTP传输。
所述未被使能针对PTM传输的重传方式能够基于PTP传输的功能，也可以基于网络侧的指示(比如通过RRC配置消息指示)，这种指示可以是显示的或是隐式的；示例性地，通过RRC配置消息指示所述终端去使能针对PTM传输的重传方式可以基于PTP传输的功能，通过RRC配置消息，所述终端未被使能ACK/NACK based HARQ反馈，从而隐式地指示了所述终端去使能针对PTM传输的重传方式可以基于PTP传输的功能。
基于此，在一实施例中，该方法还可以包括：
接收网络侧显示或隐式指示的第二信息。
其中，在一实施例中，所述终端通过RRC信令接收所述网络侧显示或 隐式指示的第二信息。
(2)当所述第二信息表征所述终端被使能了针对PTM传输的重传方式能够基于PTP传输的功能，所述第三信息表征上一次的下行调度分配是针对C-RNTI，且所述第四信息表征上一次的下行调度分配是针对单播传输时，确定所述本次的下行调度分配的NDI发生翻转。
也就是说，当所述终端被使能了针对PTM传输(可以是初始传输)的重传方式可以基于PTP传输的功能(也可以理解为所述终端在一段时间内(可以根据需要确定)有可能使用PTP进行针对PTM传输的重传，比如一段时间内网络侧为所述终端配置了单播业务)，针对所述第一HARQ进程的前一次下行调度分配是基于该MAC实体的C-RNTI加扰的，且如果前一次下行调度分配是针对单播业务的而不是针对多播业务的，则认为本次下行调度分配DCI的NDI发生翻转，此时，无论本次下行调度分配DCI中NDI的实际值为多少，均认为本次下行调度分配的NDI发生翻转。
这里，实际应用时，所述被使能了针对PTM传输的重传方式能够基于PTP传输的功能，可以是所述终端的默认行为(比如预先规定所述终端的行为)，即不需要网络侧的任何指示(比如任何RRC配置消息指示)，所述终端的默认行为就是支持针对PTM初始传输的重传方式可以基于PTP传输。
所述被使能了针对PTM传输的重传方式能够基于PTP传输的功能，也可以基于网络侧的指示(比如通过RRC配置消息指示)，这种指示可以是显示的或是隐式的；示例性地，通过RRC配置消息指示所述终端使能针对PTM传输的重传方式可以基于PTP传输的功能，通过RRC配置消息，所述终端被使能ACK/NACK based HARQ反馈，从而隐式地指示了所述终端被使能了针对PTM初始传输的重传方式可以基于PTP传输的功能。
基于此，在一实施例中，该方法还可以包括：
接收网络侧显示或隐式指示的第二信息。
其中，在一实施例中，所述终端通过RRC信令接收所述网络侧显示或隐式指示的第二信息。
实际应用时，对于所述第三信息，典型的一种区分循环冗余校验(CRC)加扰使用的C-RNTI的下行调度分配是针对单播业务或是针对多播业务的方法是：相应的下行调度分配中有一个指示域用于指示其针对单播业务还是针对多播业务，例如DCI中单播或多播(UnicastOrMulticast)域为1bit，“0”表示单播业务，“1”表示多播业务；再例如DCI中UnicastOrMulticast为2bit，“00”表示单播业务，“01”表示多播业务1，“10”表示多播业务2，“11”表示多播业务3，所述终端据此获得所述第三信息。
(3)当所述第三信息表征上一次的下行调度分配是针对所述终端的第二用于多播传输的RNTI时，确定所述本次的下行调度分配的NDI发生翻转；所述第一用于多播传输的RNTI与所述第二用于多播传输的RNTI不同。
也就是说，如果该MAC实体具有多个G-RNTI(假设为G-RNTI-1～G-RNTI-N，典型的对应多播业务1～多播业务N)，如果针对所述第一HARQ进程的前一次下行调度分配是基于该MAC实体的另一个G-RNTI加扰的(即与本次的G-RNTI-1不同)，则认为本次下行调度分配DCI的NDI发生翻转，此时，不论本次下行调度分配DCI中NDI的实际值为多少)，均认为本次下行调度分配的NDI发生翻转。
(4)当所述第二信息表征所述终端被使能了针对PTM传输的重传方式能够基于PTP传输的功能，所述第三信息表征上一次的下行调度分配是针对C-RNTI，且所述第四信息表征上一次的下行调度分配是针对第二多播传输时，确定所述本次的下行调度分配的NDI发生翻转；所述第一多播传输与所述第二多播传输不同。
也就是说，如果该MAC实体具有多个G-RNTI(假设为G-RNTI-1～G-RNTI-N，典型的对应多播业务1～多播业务N)，如果该所述终端被使能了针对PTM传输的重传方式可以基于PTP传输的功能(也可以认为所述一段时间内(可以根据需要确定)有可能使用PTP进行针对PTM传输的重传，比如一段时间内网络侧为所述终端配置了单播业务)，如果针对所述第一HARQ进程的前一次下行调度分配是基于该MAC实体的C-RNTI加扰的，并且如果前一次下行调度分配是针对基于其他G-RNTI的多播业务的而不是针对基于G-RNTI-1的多播业务的,则认为本次下行调度分配DCI的NDI发生翻转，此时，无论本次下行调度分配DCI中NDI的实际值为多少，均认为本次下行调度分配的NDI发生翻转。
这里，实际应用时，所述被使能了针对PTM传输的重传方式能够基于PTP传输的功能，可以是所述终端的默认行为(比如预先规定所述终端的行为)，即不需要网络侧的任何指示(比如任何RRC配置消息指示)，所述终端的默认行为就是支持针对PTM初始传输的重传方式可以基于PTP传输。
所述被使能了针对PTM传输的重传方式能够基于PTP传输的功能，也可以基于网络侧的指示(比如通过RRC配置消息指示)，这种指示可以是显示的或是隐式的；示例性地，通过RRC配置消息指示所述终端使能针对PTM传输的重传方式可以基于PTP传输的功能，通过RRC配置消息，所述终端被使能ACK/NACK based HARQ反馈，从而隐式地指示了所述终端被使能了针对PTM初始传输的重传方式可以基于PTP传输的功能。
基于此，在一实施例中，该方法还可以包括：
接收网络侧显示或隐式指示的第二信息。
其中，在一实施例中，所述终端通过RRC信令接收所述网络侧显示或隐式指示的第二信息。
同样地，实际应用时，对于所述第三信息，典型的一种区分CRC加扰使用的C-RNTI的下行调度分配是针对单播业务或是针对多播业务的方法 是：相应的下行调度分配中有一个指示域用于指示其针对单播业务还是针对多播业务，例如DCI中UnicastOrMulticast域为1bit，“0”表示单播业务，“1”表示多播业务；再例如DCI中UnicastOrMulticast为2bit，“00”表示单播业务，“01”表示多播业务1，“10”表示多播业务2，“11”表示多播业务3，所述终端据此获得所述第三信息。
第二种情况，本次调度分配是基于该MAC实体的C-RNTI的，即所述第一信息表征所述本次的下行调度分配是针对C-RNTI，这种情况下具体有以下几种HARQ进程使用方法：
(1)当所述第三信息表征上一次的下行调度分配是针对一个用于多播传输的RNTI时，确定所述本次的下行调度分配的NDI发生翻转。
也就是说，如果针对所述第一HARQ进程的前一次下行调度分配是基于该MAC实体的某一G-RNTI加扰的，则认为本次下行调度分配DCI的NDI发生翻转，此时，无论本次下行调度分配DCI中NDI的实际值为多少，均认为本次下行调度分配的NDI发生翻转。
其中，实际应用时，对于所述第三信息，典型的一种区分CRC加扰使用的C-RNTI的下行调度分配是针对单播业务或是针对多播业务的方法是：相应的下行调度分配中有一个指示域用于指示其针对单播业务还是针对多播业务，例如DCI中UnicastOrMulticast域为1bit，“0”表示单播业务，“1”表示多播业务；再例如DCI中UnicastOrMulticast为2bit，“00”表示单播业务，“01”表示多播业务1，“10”表示多播业务2，“11”表示多播业务3，所述终端据此获得所述第三信息。
(2)当所述第二信息表征所述终端被使能了针对PTM传输的重传方式能够基于PTP传输的功能，所述第三信息表征上一次的下行调度分配是针对C-RNTI，且所述第四信息表征上一次的下行调度分配是针对多播传输时，确定所述本次的下行调度分配的NDI发生翻转。
也就是说，所述终端被使能了针对PTM传输(可以是初始传输)的重传方式可以基于PTP传输的功能(也可以理解为所述终端在一段时间内(可以根据需要确定)有可能使用PTP进行针对PTM传输的重传，比如一段时间内网络侧为所述终端配置了单播业务)，如果针对所述第一HARQ进程的前一次下行调度分配是基于该MAC实体的C-RNTI加扰的，且如果前一次下行调度分配是针对多播业务的而不是针对单播业务的，则认为本次下行调度分配DCI的NDI发生翻转，无论本次下行调度分配DCI中NDI的实际值为多少，均认为本次下行调度分配的NDI发生翻转。
这里，实际应用时，所述被使能了针对PTM传输的重传方式能够基于PTP传输的功能，可以是所述终端的默认行为(比如预先规定所述终端的行为)，即不需要网络侧的任何指示(比如任何RRC配置消息指示)，所述终端的默认行为就是支持针对PTM初始传输的重传方式可以基于PTP传输。
所述被使能了针对PTM传输的重传方式能够基于PTP传输的功能，也可以基于网络侧的指示(比如通过RRC配置消息指示)，这种指示可以是显示的或是隐式的；示例性地，通过RRC配置消息指示所述终端使能针对PTM传输的重传方式可以基于PTP传输的功能，通过RRC配置消息，所述终端被使能ACK/NACK based HARQ反馈，从而隐式地指示了所述终端被使能了针对PTM初始传输的重传方式可以基于PTP传输的功能。
基于此，在一实施例中，该方法还可以包括：
接收网络侧显示或隐式指示的第二信息。
其中，在一实施例中，所述终端通过RRC信令接收所述网络侧显示或隐式指示的第二信息。
实际应用时，对于所述第三信息，典型的一种区分CRC加扰使用的C-RNTI的下行调度分配是针对单播业务或是针对多播业务的方法是：相应的下行调度分配中有一个指示域用于指示其针对单播业务还是针对多播业务，例如DCI中UnicastOrMulticast域为1bit，“0”表示单播业务，“1”表示多播业务；再例如DCI中UnicastOrMulticast为2bit，“00”表示单播业务，“01”表示多播业务1，“10”表示多播业务2，“11”表示多播业务3，所述终端据此获得所述第三信息。
本申请实施例提供的NDI确定方法，针对一个服务小区，在每个PDCCH监听时机，终端执行以下操作：如果在一个PDCCH监听时机接收到一个针对所述服务小区的下行调度分配，且本次的下行调度分配是基于第一HARQ进程时，至少基于以下信息至少之二确定所述本次的下行调度分配的NDI是否发生翻转：第一信息，所述第一信息表征所述本次的下行调度分配所针对的RNTI；第二信息，所述第二信息表征所述终端是否被使能针对点PTM传输的重传方式能够基于PTP传输的功能；第三信息，所述第三信息表征上一次的下行调度分配所针对的RNTI；第四信息，所述第四信息表征上一次的下行调度分配是针对单播传输或是针对多播传输；所述终端具有至少一个用于多播传输的RNTI。本申请实施例提供的方案，对于每个服务小区，在每个PDCCH监听时机，终端根据使能情况、前一次调度的单播或者多播情况、前一次调度的加扰情况等不同条件的组合，判断NDI是否发生翻转，使得基站和终端能够对一次PDSCH传输是是单播或是多播、是单播的重传或是多播的重传等有一致的理解，从而在支持多播和单播动态共享HARQ进程的前提下，实现了高效的多播传输。
下面结合应用实施例对本申请再作进一步详细的描述。
应用实施例一
在本应用实施例中，假设UE1和UE2属于同一个多播和广播业务(MBS)组(group)，如图2所示，UE1和UE2在t0时刻分别收到单播调度的初始传输(这里，同样适用于重传)，对应的HARQ进程的HPN为HPN#0，UE1的NDI＝0，UE2的NDI＝1，之后UE1和UE2会在合适的时 刻反馈针对单播业务的ACK/NACK；之后在t1时刻，UE1和UE2收到多播业务的PTM初始传输，对应的DCI指示对应的HARQ进程的HPN为HPN#0，此时NDI可以指示0或者1，不管指示0或者1，UE1和UE2都认为本次的NDI发生翻转，之后UE1和UE2会在合适的时刻反馈针对多播业务的PTM初传的ACK/NACK；之后在t2时刻，UE1和UE2分别通过PTP进行针对多播业务的重传，对应的DCI指示对应的HARQ进程的HPN为HPN#0，按照相关技术中单播业务重传的原则，此时DCI中的NDI相比初传使用的NDI应该保持不变，即未发生翻转。
应用实施例二
在本应用实施例中，假设UE1和UE2属于同一个MBS group，如图3所示，UE1和UE2在t0时刻收到多播业务的PTM初始传输(假设对应的HARQ进程的HPN为HPN#0，NDI＝0)，之后UE1和UE2会在合适的时刻反馈针对多播业务的ACK/NACK；UE2在t1时刻收到单播业务调度的初始传输(对应的HARQ进程的HPN为HPN#0)，此时NDI可以指示0或者1，不管NDI指示0或者1，对于UE2来说，都认为本次NDI发生翻转，之后UE2会在合适的时刻反馈针对单播业务的ACK/NACK；之后在t2时刻，UE1和UE2收到多播业务的PTM初始传输，对应的DCI指示HPN#0，此时NDI＝1，对于UE1来说，由于前一次调度分配NDI＝0，所以本次调度分配NDI需要发生翻转，对于UE2来说，不管具体的NDI值，都认为本次NDI发生翻转，之后UE1和UE2会在合适的时刻反馈针对多播业务的PTM初传的ACK/NACK；之后在t3时刻，UE1和UE2分别通过PTP进行针对多播业务的重传，其DCI指示HPN#0，按照相关技术中单播业务重传的原则，此时DCI中的NDI相比初传使用的NDI应该保持不变，即未发生翻转。
应用实施例三
本应用实例中，假设UE1和UE2属于MBS group 1，接收多播业务1，TM传输使用G-RNTI1，假设UE1和UE3同时属于MBS group 2，接收多播业务2，PTM传输使用G-RNTI2；如图4所示，UE1和UE2在t0时刻收到多播业务1的PTM初始传输(G-RNTI1，对应的HARQ进程的HPN为HPN#0，NDI＝0)，之后UE1和UE2会在合适的时刻反馈针对多播业务1的ACK/NACK；之后UE1和UE3在t1时刻收到多播业务2的PTM初始传输(G-RNTI2，对应的HARQ进程的HPN为HPN#0)，此时NDI可以指示0或者1，对于UE1来说，不管指示0或者1，都认为本次NDI发生翻转，之后UE1和UE3会在合适的时刻反馈针对多播业务2的ACK/NACK；之后UE1和UE2在t2时刻收到multicast业务1的PTM初始传输(G-RNTI1，对应的HARQ进程的HPN为HPN#0)，此时NDI＝1，因为对于UE2的前一次调度分配NDI＝0，需要发生翻转，对于UE1来说，不管具体的NDI值，都认为本次NDI发生翻转。
应用实施例四
本应用实施例中，UE1和UE2属于一个MBS group 1，接收多播业务1，PTM传输使用G-RNTI1，假设UE1和UE3同时属于MBS group 2，接收多播业务2，PTM传输使用G-RNTI2；如图5所示，UE1和UE2在t0时刻收到多播业务1的PTM初始传输(G-RNTI1，对应的HARQ进程的HPN为HPN#0，NDI＝0)，之后UE1和UE2会在合适的时刻反馈针对多播业务1的ACK/NACK；之后UE1和UE3在t1时刻收到多播业务2的PTM初始传输(G-RNTI2，对应的HARQ进程的HPN为HPN#0)，此时，NDI可以指示0或者1，对于UE1来说，不管NDI指示0或者1，都认为本次NDI发生翻转，之后UE1和UE3会在合适的时刻反馈针对多播业务2的ACK/NACK(该步骤之前和应用实施例三一样)；之后UE1在t2时刻收到多播业务1的PTP重传(G-RNTI1，对应的HARQ进程的HPN为HPN#0)，按照相关中单播重传的原则，此时DCI中的NDI相比初传使用的NDI应该保持不变，即未发生翻转；之后UE1和UE2在t3时刻收到多播业务1的PTM初始传输(G-RNTI1，对应的HARQ进程的HPN为HPN#0)，此时NDI＝1，对于UE2来说，由于前一次调度分配NDI＝0，因此需要发生翻转，对于UE1来说，不管具体的NDI值，都认为本次NDI发生翻转。
为了实现本申请实施例的方法，本申请实施例还提供了一种NDI确定装置，设置在终端上，如图6所示，该装置包括：
处理单元601，配置为针对一个服务小区，在每个PDCCH监听时机，执行以下操作：
如果在一个PDCCH监听时机接收到一个针对所述服务小区的下行调度分配，且本次的下行调度分配是基于第一HARQ进程时，至少基于以下信息至少之二确定所述本次的下行调度分配的NDI是否发生翻转：
第一信息，所述第一信息表征所述本次的下行调度分配所针对的RNTI；
第二信息，所述第二信息表征所述终端是否被使能针对PTM传输的重传方式能够基于PTP传输的功能；
第三信息，所述第三信息表征上一次的下行调度分配所针对的RNTI；
第四信息，所述第四信息表征上一次的下行调度分配是针对单播传输或是针对多播传输；所述终端具有至少一个用于多播传输的RNTI。
其中，在一实施例中，如图6所示，该装置还可以包括：
确定单元602，配置为确定相应信息；所述相应信息包含第一信息、第二信息、第三信息和第四信息。
其中，在一实施例中，所述确定单元602，配置为接收网络侧显示或隐式指示的第二信息。
在一实施例中，所述确定单元602，配置为通过RRC信令接收所述网络侧显示或隐式指示的第二信息。
在一实施例中，所述处理单元601，配置为：
当所述第一信息表征所述本次的下行调度分配是针对所述终端的第一用于多播传输的RNTI，所述第二信息表征所述终端未被使能针对PTM传输的重传方式能够基于PTP传输的功能，且所述第三信息表征上一次的下行调度分配是针对C-RNTI时，确定所述本次的下行调度分配的NDI发生翻转。
在一实施例中，所述处理单元601，配置为：
当所述第一信息表征所述本次的下行调度分配是针对所述终端的第一用于多播传输的RNTI，所述第二信息表征所述终端被使能了针对PTM传输的重传方式能够基于PTP传输的功能，所述第三信息表征上一次的下行调度分配是针对C-RNTI，且所述第四信息表征上一次的下行调度分配是针对单播传输时，确定所述本次的下行调度分配的NDI发生翻转。
在一实施例中，所述处理单元601，配置为：
当所述第一信息表征所述本次的下行调度分配是针对所述终端的第一用于多播传输的RNTI，且所述第三信息表征上一次的下行调度分配是针对所述终端的第二用于多播传输的RNTI时，确定所述本次的下行调度分配的NDI发生翻转；所述第一用于多播传输的RNTI与所述第二用于多播传输的RNTI不同。
在一实施例中，所述处理单元601，配置为：
当所述第一信息表征所述本次的下行调度分配是针对所述终端的第一用于多播传输的RNTI，所述第二信息表征所述终端被使能了针对PTM传输的重传方式能够基于PTP传输的功能，所述第三信息表征上一次的下行调度分配是针对C-RNTI，且所述第四信息表征上一次的下行调度分配是针对第二多播传输时，确定所述本次的下行调度分配的NDI发生翻转；所述第一多播传输与所述第二多播传输不同。
在一实施例中，所述处理单元601，配置为：
当所述第一信息表征所述本次的下行调度分配是针对C-RNTI，且所述第三信息表征上一次的下行调度分配是针对一个用于多播传输的RNTI时，确定所述本次的下行调度分配的NDI发生翻转。
在一实施例中，所述处理单元601，配置为：
当所述第一信息表征所述本次的下行调度分配是针对C-RNTI，所述第二信息表征所述终端被使能了针对PTM传输的重传方式能够基于PTP传输的功能，所述第三信息表征上一次的下行调度分配是针对C-RNTI，且所述第四信息表征上一次的下行调度分配是针对多播传输时，确定所述本次的下行调度分配的NDI发生翻转。
实际应用时，所述确定单元602可由NDI确定装置中的处理器结合通信接口实现，所述处理单元601可由NDI确定装置中的处理器实现。
需要说明的是：上述实施例提供的NDI确定装置在确定NDI时，仅以上述各程序模块的划分进行举例说明，实际应用中，可以根据需要而将上 述处理分配由不同的程序模块完成，即将装置的内部结构划分成不同的程序模块，以完成以上描述的全部或者部分处理。另外，上述实施例提供的NDI确定装置与NDI确定方法实施例属于同一构思，其具体实现过程详见方法实施例，这里不再赘述。
基于上述程序模块的硬件实现，且为了实现本申请实施例的方法，本申请实施例还提供了一种终端，如图7所示，该终端700包括：
通信接口701，能够与网络侧进行信息交互；
处理器702，与所述通信接口701连接，以实现与网络侧进行信息交互，配置为运行计算机程序时，执行上述终端侧一个或多个技术方案提供的方法；
存储器703，所述计算机程序存储在存储器703上。
具体地，所述处理器702，配置为针对一个服务小区，在每个PDCCH监听时机，执行以下操作：
如果在一个PDCCH监听时机接收到一个针对所述服务小区的下行调度分配，且本次的下行调度分配是基于第一HARQ进程时，至少基于以下信息至少之二确定所述本次的下行调度分配的NDI是否发生翻转：
第一信息，所述第一信息表征所述本次的下行调度分配所针对的RNTI；
第二信息，所述第二信息表征所述终端是否被使能针对PTM传输的重传方式能够基于PTP传输的功能；
第三信息，所述第三信息表征上一次的下行调度分配所针对的RNTI；
第四信息，所述第四信息表征上一次的下行调度分配是针对单播传输或是针对多播传输；所述终端具有至少一个用于多播传输的RNTI。
其中，在一实施例中，所述处理器702，还配置为确定相应信息；所述相应信息包含第一信息、第二信息、第三信息和第四信息。
其中，在一实施例中，所述处理器702，配置为通过所述通信接口701接收网络侧显示或隐式指示的第二信息。
在一实施例中，所述处理器702，配置为利用所述通信接口701通过RRC信令接收所述网络侧显示或隐式指示的第二信息。
在一实施例中，所述处理器702，配置为：
当所述第一信息表征所述本次的下行调度分配是针对所述终端的第一用于多播传输的RNTI，所述第二信息表征所述终端未被使能针对PTM传输的重传方式能够基于PTP传输的功能，且所述第三信息表征上一次的下行调度分配是针对C-RNTI时，确定所述本次的下行调度分配的NDI发生翻转。
在一实施例中，所述处理器702，配置为：
当所述第一信息表征所述本次的下行调度分配是针对所述终端的第一用于多播传输的RNTI，所述第二信息表征所述终端被使能了针对PTM传 输的重传方式能够基于PTP传输的功能，所述第三信息表征上一次的下行调度分配是针对C-RNTI，且所述第四信息表征上一次的下行调度分配是针对单播传输时，确定所述本次的下行调度分配的NDI发生翻转。
在一实施例中，所述处理器702，配置为：
当所述第一信息表征所述本次的下行调度分配是针对所述终端的第一用于多播传输的RNTI，且所述第三信息表征上一次的下行调度分配是针对所述终端的第二用于多播传输的RNTI时，确定所述本次的下行调度分配的NDI发生翻转；所述第一用于多播传输的RNTI与所述第二用于多播传输的RNTI不同。
在一实施例中，所述处理器702，配置为：
当所述第一信息表征所述本次的下行调度分配是针对所述终端的第一用于多播传输的RNTI，所述第二信息表征所述终端被使能了针对PTM传输的重传方式能够基于PTP传输的功能，所述第三信息表征上一次的下行调度分配是针对C-RNTI，且所述第四信息表征上一次的下行调度分配是针对第二多播传输时，确定所述本次的下行调度分配的NDI发生翻转；所述第一多播传输与所述第二多播传输不同。
在一实施例中，所述处理器702，配置为：
当所述第一信息表征所述本次的下行调度分配是针对C-RNTI，且所述第三信息表征上一次的下行调度分配是针对一个用于多播传输的RNTI时，确定所述本次的下行调度分配的NDI发生翻转。
在一实施例中，所述处理器702，配置为：
当所述第一信息表征所述本次的下行调度分配是针对C-RNTI，所述第二信息表征所述终端被使能了针对PTM传输的重传方式能够基于PTP传输的功能，所述第三信息表征上一次的下行调度分配是针对C-RNTI，且所述第四信息表征上一次的下行调度分配是针对多播传输时，确定所述本次的下行调度分配的NDI发生翻转。
需要说明的是：所述处理器702及通信接口701的具体处理过程可参照上述方法理解。
当然，实际应用时，终端700中的各个组件通过总线系统704耦合在一起。可理解，总线系统704配置为实现这些组件之间的连接通信。总线系统704除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图7中将各种总线都标为总线系统704。
本申请实施例中的存储器703配置为存储各种类型的数据以支持终端700的操作。这些数据的示例包括：用于在终端700上操作的任何计算机程序。
上述本申请实施例揭示的方法可以应用于所述处理器702中，或者由所述处理器702实现。所述处理器702可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过所述处理器702 中的硬件的集成逻辑电路或者软件形式的指令完成。上述的所述处理器702可以是通用处理器、数字信号处理器(DSP，Digital Signal Processor)，或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。所述处理器702可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤，可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于存储介质中，该存储介质位于存储器703，所述处理器702读取存储器703中的信息，结合其硬件完成前述方法的步骤。
在示例性实施例中，终端700可以被一个或多个应用专用集成电路(ASIC，Application Specific Integrated Circuit)、DSP、可编程逻辑器件(PLD，Programmable Logic Device)、复杂可编程逻辑器件(CPLD，Complex Programmable Logic Device)、现场可编程门阵列(FPGA，Field-Programmable Gate Array)、通用处理器、控制器、微控制器(MCU，Micro Controller Unit)、微处理器(Microprocessor)、或者其他电子元件实现，配置为执行前述方法。
可以理解，本申请实施例的存储器703可以是易失性存储器或者非易失性存储器，也可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(ROM，Read Only Memory)、可编程只读存储器(PROM，Programmable Read-Only Memory)、可擦除可编程只读存储器(EPROM，Erasable Programmable Read-Only Memory)、电可擦除可编程只读存储器(EEPROM，Electrically Erasable Programmable Read-Only Memory)、磁性随机存取存储器(FRAM，ferromagnetic random access memory)、快闪存储器(Flash Memory)、磁表面存储器、光盘、或只读光盘(CD-ROM，Compact Disc Read-Only Memory)；磁表面存储器可以是磁盘存储器或磁带存储器。易失性存储器可以是随机存取存储器(RAM，Random Access Memory)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(SRAM，Static Random Access Memory)、同步静态随机存取存储器(SSRAM，Synchronous Static Random Access Memory)、动态随机存取存储器(DRAM，Dynamic Random Access Memory)、同步动态随机存取存储器(SDRAM，Synchronous Dynamic Random Access Memory)、双倍数据速率同步动态随机存取存储器(DDRSDRAM，Double Data Rate Synchronous Dynamic Random Access Memory)、增强型同步动态随机存取存储器(ESDRAM，Enhanced Synchronous Dynamic Random Access Memory)、同步连接动态随机存取存储器(SLDRAM，SyncLink Dynamic Random Access Memory)、直接内存总线随机存取存储器(DRRAM，Direct Rambus Random Access Memory)。本申请实施例描述的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
在示例性实施例中，本申请实施例还提供了一种存储介质，即计算机存储介质，具体为计算机可读存储介质，例如包括存储计算机程序的存储器703，上述计算机程序可由终端700的处理器702执行，以完成前述方法所述步骤。计算机可读存储介质可以是FRAM、ROM、PROM、EPROM、EEPROM、Flash Memory、磁表面存储器、光盘、或CD-ROM等存储器。
需要说明的是：“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
另外，本申请实施例所记载的技术方案之间，在不冲突的情况下，可以任意组合。
以上所述，仅为本申请的较佳实施例而已，并非用于限定本申请的保护范围。

Claims (13)

  1. 一种新数据指示符NDI确定方法，应用于终端，包括：
    针对一个服务小区，在每个物理下行控制信道PDCCH监听时机，执行以下操作：
    如果在一个PDCCH监听时机接收到一个针对所述服务小区的下行调度分配，且本次的下行调度分配是基于第一混合自动重传请求HARQ进程时，至少基于以下信息至少之二确定所述本次的下行调度分配的NDI是否发生翻转：
    第一信息，所述第一信息表征所述本次的下行调度分配所针对的无线网络临时标识RNTI；
    第二信息，所述第二信息表征所述终端是否被使能针对点到多点PTM传输的重传方式能够基于点到点PTP传输的功能；
    第三信息，所述第三信息表征上一次的下行调度分配所针对的RNTI；
    第四信息，所述第四信息表征上一次的下行调度分配是针对单播传输或是针对多播传输；所述终端具有至少一个用于多播传输的RNTI。
  2. 根据权利要求1所述的方法，其中，所述确定所述本次的下行调度分配的NDI是否发生翻转，包括：
    当所述第一信息表征所述本次的下行调度分配是针对所述终端的第一用于多播传输的RNTI，所述第二信息表征所述终端未被使能针对PTM传输的重传方式能够基于PTP传输的功能，且所述第三信息表征上一次的下行调度分配是针对小区无线网络临时标识C-RNTI时，确定所述本次的下行调度分配的NDI发生翻转。
  3. 根据权利要求1所述的方法，其中，所述确定所述本次的下行调度分配的NDI是否发生翻转，包括：
    当所述第一信息表征所述本次的下行调度分配是针对所述终端的第一用于多播传输的RNTI，所述第二信息表征所述终端被使能了针对PTM传输的重传方式能够基于PTP传输的功能，所述第三信息表征上一次的下行调度分配是针对C-RNTI，且所述第四信息表征上一次的下行调度分配是针对单播传输时，确定所述本次的下行调度分配的NDI发生翻转。
  4. 根据权利要求1所述的方法，其中，所述确定所述本次的下行调度分配的NDI是否发生翻转，包括：
    当所述第一信息表征所述本次的下行调度分配是针对所述终端的第一用于多播传输的RNTI，且所述第三信息表征上一次的下行调度分配是针对所述终端的第二用于多播传输的RNTI时，确定所述本次的下行调度分配的NDI发生翻转；所述第一用于多播传输的RNTI与所述第二用于多播传输的RNTI不同。
  5. 根据权利要求1所述的方法，其中，所述本次的下行调度分配针对第一多播传输，所述确定所述本次的下行调度分配的NDI是否发生翻转，包括：
    当所述第一信息表征所述本次的下行调度分配是针对所述终端的第一用于多播传输的RNTI，所述第二信息表征所述终端被使能了针对PTM传输的重传方式能够基于PTP传输的功能，所述第三信息表征上一次的下行调度分配是针对C-RNTI，且所述第四信息表征上一次的下行调度分配是针对第二多播传输时，确定所述本次的下行调度分配的NDI发生翻转；所述第一多播传输与所述第二多播传输不同。
  6. 根据权利要求1所述的方法，其中，所述确定所述本次的下行调度分配的NDI是否发生翻转，包括：
    当所述第一信息表征所述本次的下行调度分配是针对C-RNTI，且所述第三信息表征上一次的下行调度分配是针对一个用于多播传输的RNTI时，确定所述本次的下行调度分配的NDI发生翻转。
  7. 根据权利要求1所述的方法，其中，所述确定所述本次的下行调度分配的NDI是否发生翻转，包括：
    当所述第一信息表征所述本次的下行调度分配是针对C-RNTI，所述第二信息表征所述终端被使能了针对PTM传输的重传方式能够基于PTP传输的功能，所述第三信息表征上一次的下行调度分配是针对C-RNTI，且所述第四信息表征上一次的下行调度分配是针对多播传输时，确定所述本次的下行调度分配的NDI发生翻转。
  8. 根据权利要求1至7任一项所述的方法，其中，所述方法还包括：
    接收网络侧显示或隐式指示的第二信息。
  9. 根据权利要求8所述的方法，其中，通过无线资源控制RRC信令接收所述网络侧显示或隐式指示的第二信息。
  10. 一种NDI确定装置，设置在终端，包括：
    处理单元，配置为针对一个服务小区，在每个PDCCH监听时机，执行以下操作：
    如果在一个PDCCH监听时机接收到一个针对所述服务小区的下行调度分配，且本次的下行调度分配是基于第一HARQ进程时，至少基于以下信息至少之二确定所述本次的下行调度分配的NDI是否发生翻转：
    第一信息，所述第一信息表征所述本次的下行调度分配所针对的RNTI；
    第二信息，所述第二信息表征所述终端是否被使能针对PTM传输的重传方式能够基于PTP传输的功能；
    第三信息，所述第三信息表征上一次的下行调度分配所针对的RNTI；
    第四信息，所述第四信息表征上一次的下行调度分配是针对单播传输或是针对多播传输；所述终端具有至少一个用于多播传输的RNTI。
  11. 一种终端，包括：处理器及通信接口；其中，
    所述处理器，配置为针对一个服务小区，在每个PDCCH监听时机，执行以下操作：
    如果在一个PDCCH监听时机接收到一个针对所述服务小区的下行调度分配，且本次的下行调度分配是基于第一HARQ进程时，至少基于以下信息至少之二确定所述本次的下行调度分配的NDI是否发生翻转：
    第一信息，所述第一信息表征所述本次的下行调度分配所针对的RNTI；
    第二信息，所述第二信息表征所述终端是否被使能针对PTM传输的重传方式能够基于PTP传输的功能；
    第三信息，所述第三信息表征上一次的下行调度分配所针对的RNTI；
    第四信息，所述第四信息表征上一次的下行调度分配是针对单播传输或是针对多播传输；所述终端具有至少一个用于多播传输的RNTI。
  12. 一种终端，包括：处理器和配置为存储能够在处理器上运行的计算机程序的存储器，
    其中，所述处理器配置为运行所述计算机程序时，执行权利要求1至9任一项所述方法的步骤。
  13. 一种存储介质，其上存储有计算机程序，所述计算机程序被处理器执行时实现权利要求1至9任一项所述方法的步骤。
PCT/CN2022/108369 2021-07-28 2022-07-27 Ndi确定方法、装置、终端及存储介质 Ceased WO2023005998A1 (zh)

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