WO2022077792A1 - Procédé et appareil de communication - Google Patents

Procédé et appareil de communication Download PDF

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Publication number
WO2022077792A1
WO2022077792A1 PCT/CN2021/072220 CN2021072220W WO2022077792A1 WO 2022077792 A1 WO2022077792 A1 WO 2022077792A1 CN 2021072220 W CN2021072220 W CN 2021072220W WO 2022077792 A1 WO2022077792 A1 WO 2022077792A1
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WIPO (PCT)
Prior art keywords
time domain
domain resource
length
communication device
sub
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PCT/CN2021/072220
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English (en)
Chinese (zh)
Inventor
余雅威
余健
郭志恒
谢信乾
陆绍中
Original Assignee
华为技术有限公司
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Priority to CN202180069340.8A priority Critical patent/CN116349352A/zh
Publication of WO2022077792A1 publication Critical patent/WO2022077792A1/fr

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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present application relates to the field of wireless communication, and in particular, to a communication method and apparatus.
  • 5G Fifth-Generation
  • NR new radio
  • eMBB enhanced mobile broadband
  • URLLC ultra-reliability low-latency communication
  • mMTC massive machine-type communication
  • a time slot (ie slot) includes 14 orthogonal frequency division multiplexing time domain symbols (orthogonal frequency division multiplexing symbols, OS) (hereinafter referred to as symbols), and the network device single time
  • the length of the scheduled time domain resources will not exceed one slot.
  • the length of a certain time domain resource generally refers to the number of time domain symbols included in the time domain resource.
  • the length of the time domain resource scheduled by the network device at one time will not be greater than 14.
  • 5G technology the technical demand for time-domain resources with a single scheduling resource length greater than 14 has gradually emerged.
  • PUSCH physical uplink shared channel
  • PUSCH physical uplink shared channel
  • packets on multiple time slots can be aggregated into more than 14
  • the single-time scheduling resource length of time-domain symbols can obtain larger packets with better channel coding capability to improve transmission performance.
  • aggregating multiple small packets into larger packets can reduce the total packet header overhead and improve the transmission efficiency.
  • the existing NR standard cannot realize resource scheduling of more than 14 time-domain symbols and how to configure a demodulation reference signal (DMRS) at this time.
  • DMRS demodulation reference signal
  • the present application provides a communication method and apparatus. With the method provided in the present application, the overhead of reference signal configuration can be reduced, and the spectral efficiency of transmission can be improved.
  • an embodiment of the present application provides a communication method.
  • the first communication device determines at least two sub-time domain resources included in the first time domain resource.
  • the first time domain resource includes at least two consecutive sub-time domain resources
  • the at least two sub-time domain resources are time domain resources in at least two adjacent first time units
  • the at least two sub-time domain resources are The domain resources are in one-to-one correspondence with the at least two adjacent first time units, the sum of the lengths of the at least two sub-time domain resources is equal to the length of the first time domain resources, and the length of the time domain resources is the time domain resource The number of second time units included in .
  • the first communication device determines that the length of the first sub-time domain resource in the at least two sub-time domain resources is equal to or greater than the first length threshold, or determines that the length of the first sub-time domain resource in the at least two sub-time domain resources If the transmission code rate corresponding to the domain resource is smaller than the preset transmission code rate, the first communication device determines that a demodulation reference signal DMRS is configured on the first sub-time domain resource.
  • the time domain resources of more than 14 time domain symbols are included in at least two consecutive first time units (eg, time slots). Therefore, when the first time domain resource determined by the first communication device occupies at least two adjacent first time units, the first communication device may perform DMRS on the at least two consecutive sub-time domain resources respectively. Determination of resources. This solves the problem of resource allocation of DMRS for time domain resources with more than 14 time domain symbols.
  • the first communication device only determines that the length of the first sub-time domain resource is equal to or greater than the first length threshold, or determines that the transmission code rate corresponding to the first sub-time domain resource is smaller than the preset transmission code rate.
  • a demodulation reference signal DMRS is configured on one sub-time domain resource, which can make the number of DMRS configured on the first sub-time domain resource reasonable, and can avoid the transmission code rate of the first sub-time domain resource from being too large.
  • the first communication device determines that the length of the second sub-time-domain resource in the at least two sub-time-domain resources is smaller than the first length threshold, or determines The transmission code rate corresponding to the second sub-time-domain resource in the at least two sub-time-domain resources is equal to or higher than the preset transmission code rate, and the first communication device determines that the second sub-time-domain resource is not Configure DMRS.
  • the first communication device may determine not to configure the DMRS, which can also avoid excessive transmission code rate of the second sub-time domain resource after the DMRS configuration. The occurrence of large or uneven DMRS distribution.
  • the first communication device uses the second sub-time domain resource to perform Signal transmission.
  • the signal transmission performed by the first communication device through the second sub-time domain resource and the signal transmission performed through the first sub-time domain resource satisfy at least one of the following: the transmit power is the same, the precoding is the same , the transmitting port is the same.
  • constraining the transmission power, precoding or transmission port on the signal transmission performed by the first communication device through the second sub-time domain resource can make the first communication device's
  • the receiving end that is, the second communication device
  • the first communication device maps the first sub-time domain resource to the corresponding The channel estimation result of is determined to be the channel estimation result when the first communication device performs signal reception through the second sub-time domain resource.
  • the first communication device may perform joint channel estimation on the signal reception performed on the second sub-time domain resource and the first sub-time domain resource, which may enhance the reliability of signal reception. quality.
  • the first length threshold is determined by the length of the first time domain resource.
  • the first communication device may further acquire the start and duration indication parameters and the upper limit of the target length corresponding to the first time domain resource.
  • the upper limit of the target length is the maximum allowable number of second time units included in the first time domain resource, and the upper limit of the target length is greater than 14.
  • the first communication device determines the length and the start position of the first time domain resource according to the upper limit of the target length and the start and duration indication parameters.
  • the first communication device directly determines the length and starting position of the first time domain resource according to the size-adjustable upper limit of the target length and the start and duration indication parameters, so that the method for determining the time domain resource provided by the present application can be used. It can be compatible with the configuration process of the time domain resources provided by the existing protocol with less than or equal to 14 time domain symbols, which is beneficial to the practical application of the time domain resource determination method provided by the present application.
  • the first communication device may receive a first upper length limit indication parameter from the second communication device, and determine a target upper limit adjustment coefficient according to the first length upper limit indication parameter .
  • the first communication device determines the upper limit of the target length according to the upper limit of the target upper limit adjustment coefficient and the upper limit of the basic number of first time units corresponding to the first time domain resource. Wherein, the upper limit of the basic number is 14.
  • the first communication device determines a target corresponding to the first upper length upper limit indicator parameter from a preset upper limit adjustment coefficient set according to the first length upper limit indicator parameter Cap adjustment factor.
  • the upper limit adjustment coefficient set includes one or more upper limit adjustment coefficients corresponding to different length upper limit indication parameters.
  • the first communication device determines the value of the first length upper limit indication parameter as the target upper limit adjustment coefficient.
  • the first communication device uses the value of the first length upper limit indication parameter indicated by the second communication device as the target upper limit adjustment coefficient, and then the first communication device can determine the real target according to the target upper limit adjustment coefficient and the basic number upper limit
  • this method can facilitate the adjustment of the size of the upper limit of the target length, and on the other hand, it also makes the process of obtaining the upper limit of the target length by the first communication device simple and effective.
  • the first communication device receives a second upper length limit indication parameter from the second communication device.
  • the first communication device determines the target length upper limit corresponding to the second length upper limit indication parameter from a preset or configured length upper limit set according to the second length upper limit indication parameter.
  • the length upper limit set includes length upper limits corresponding to one or more different length upper limit indication parameters.
  • the first communication device receives a second upper length limit indication parameter from the second communication device.
  • the first communication device takes the value of the second length upper limit indication parameter as the target length upper limit.
  • the second communication device directly indicates the upper limit of the target length through the value of the second upper length limit indication parameter, and the method is simple and easy to implement.
  • the first communication device acquires the target index value.
  • the first communication device determines a target length and a target start position corresponding to the target index value from a preset time domain resource indication set according to the target index value, wherein the time domain resource indication set includes: One or more different index values and the corresponding length and starting position of each index value, the one or more index values include at least one index value with a corresponding length greater than 14.
  • the first communication device determines the target length and target start position information corresponding to the target index value as the length and start position of the first time domain resource.
  • the second communication device directly indicates the length and starting position of the first time domain resource through a target index value, which can reduce the signaling resources occupied by the indication of the length and starting position of the first time domain resource, and can improve the first time domain resource. Resource utilization efficiency of the second communication device and the first communication device.
  • the first time unit is a time slot
  • the second time unit is a time domain symbol
  • an embodiment of the present application provides a communication method.
  • the first communication device determines the length and the first number of the first time domain resource.
  • the first time domain resource includes at least two consecutive sub-time domain resources, the at least two sub-time domain resources are time domain resources in at least two adjacent first time units, and the at least two sub-time domain resources are The domain resources are in one-to-one correspondence with the at least two adjacent first time units, the sum of the lengths of the at least two sub-time domain resources is equal to the length of the first time domain resources, and the length of the time domain resources is the length of the time domain resources.
  • the number of included second time units, the length of the first time domain resource is greater than 14, and the first number is the maximum allowable number of first DMRS configured on the first time domain resource;
  • the first communication device determines the time domain resource of the demodulation reference signal DMRS on the first time domain resource according to the length of the first time domain resource and the first number.
  • the first communication device when the first time domain resource determined by the first communication device occupies at least two adjacent first time units (ie slots), the first communication device directly regards the first time domain resource as a Determining the time domain resources of the DMRS as a whole can make the DMRS configuration of each sub-time domain resource more reasonable in quantity and position.
  • the first number is greater than three.
  • the first communication device determines that no DMRS is configured on any sub-time domain resource in the at least two sub-time domain resources, the first communication device passes the The signal transmission performed by any of the sub-time domain resources and the signal transmission performed by the sub-time domain resources configured with DMRS satisfy at least one of the following: the same transmit power, the same precoding, and the same transmit port.
  • the first communication device determines that DMRS is not configured on any sub-time domain resource in the at least two sub-time domain resources, the first communication device will configure The channel estimation result corresponding to the sub-time domain resources of the DMRS is used to demodulate the signal received on any of the sub-time domain resources.
  • the first communication device acquires the start and duration indication parameters corresponding to the first time domain resource and the upper limit of the target length, where the upper limit of the target length is the specified upper limit of the target length.
  • the maximum allowable number of second time units included in the first time domain resource, and the upper limit of the target length is greater than 14.
  • the first communication device determines the length and the start position of the first time domain resource according to the upper limit of the target length and the start and duration indication parameters.
  • the first communication device may receive a first upper length limit indication parameter from the second communication device, and determine a target upper limit adjustment coefficient according to the first length upper limit indication parameter .
  • the first communication device determines the upper limit of the target length according to the target upper limit adjustment coefficient and the upper limit of the basic number of first time units corresponding to the first time domain resource. Wherein, the upper limit of the basic number is 14.
  • the first communication device determines the target corresponding to the first length upper limit indication parameter from a preset upper limit adjustment coefficient set according to the first length upper limit indication parameter Cap adjustment factor.
  • the upper limit adjustment coefficient set includes one or more upper limit adjustment coefficients corresponding to different length upper limit indication parameters.
  • the first communication device determines the value of the first length upper limit indication parameter as a target upper limit adjustment coefficient.
  • the first communication device receives the first length upper limit indication parameter from the second communication device.
  • the first communication device determines the target length upper limit corresponding to the first length upper limit indication parameter from a preset length upper limit set according to the first length upper limit indication parameter.
  • the length upper limit set includes length upper limits corresponding to one or more different length upper limit indication parameters.
  • the first communication device receives the first length upper limit indication parameter from the second communication device.
  • the first communication device determines the value of the first length upper limit indication parameter as the target length upper limit.
  • the first communication device acquires the target index value.
  • the first communication device determines a target length and a target start position corresponding to the target index value from a preset time domain resource indication set according to the target index value, wherein the time domain resource indication set includes: One or more different index values and the corresponding length and starting position of each index value, the one or more index values include at least one index value with a corresponding length greater than 14.
  • the first communication device determines the target length and target start position information corresponding to the target index value as the length and start position of the first time domain resource.
  • the first time unit is a time slot
  • the second time unit is a time domain symbol
  • Another communication method and apparatus provided by the present application realizes a single scheduling of time domain resources exceeding 14 symbols.
  • an embodiment of the present application provides a communication method.
  • the second communication device determines the initial and persistent length indication parameters and the upper limit of the target length corresponding to the first time domain resource.
  • the start and duration length indication parameters and the target length upper limit are used to indicate the length of the first time domain resource and the target start symbol parameter, and the resource length of the time domain resource is the second time domain resource included in the time domain resource.
  • the number of time units, and the length of the first time domain resource is greater than 14.
  • the second communication device sends the start and duration indication parameters and the target length upper limit to the first communication device.
  • the second communication device determines a target upper limit adjustment coefficient according to the upper limit of the basic number of second time units corresponding to the first time domain resource and the upper limit of the target length , wherein the upper limit of the basic number is 14; the second communication device determines the first upper length upper limit indication parameter corresponding to the target upper limit adjustment coefficient.
  • the second communication device sends the first length upper limit indication parameter to the first communication device.
  • the second communication device determines a first length upper limit indication parameter corresponding to the target upper limit adjustment coefficient from a preset upper limit adjustment coefficient set, wherein the upper limit The adjustment coefficient set includes length upper limit indication parameters corresponding to one or more different upper limit adjustment coefficients.
  • the second communication device determines the value of the target upper limit adjustment coefficient as the first length upper limit indication parameter.
  • the second communication device determines a second upper length limit indication parameter corresponding to the target length upper limit from a preset length upper limit set, wherein the length upper limit set including one or more length upper limit indication parameters corresponding to different length upper limits.
  • the second communication device sends the second length upper limit indication parameter to the first communication device.
  • the second communication device determines the value of the upper limit of the target length as the second upper length limit indication parameter.
  • the second communication device sends the second length upper limit indication parameter to the first communication device.
  • an embodiment of the present application provides a communication method.
  • the second communication device determines a target index value corresponding to the length and the starting position of the first time domain resource from a preset time domain resource indication set according to the length and starting position of the first time domain resource.
  • the time domain resource indication set includes one or more index values and the corresponding length and starting position of each index value, and the length of the time domain resource is the number of second time units included in the time domain resource.
  • the length of the first time domain resource is greater than 14.
  • the second communication device sends the target index value to the first communication device, where the target index value is used by the first communication device to determine the length and start position of the first time domain resource.
  • an embodiment of the present application provides an apparatus.
  • the device may be the first communication device itself, or may be an element or module such as a chip inside the first communication device.
  • the apparatus includes a unit for executing the communication method provided by any possible implementation manner of the first aspect or the second aspect, so it can also be beneficial for implementing the communication method provided by the first aspect or the second aspect effect (or advantage).
  • an embodiment of the present application provides an apparatus.
  • the device may be the second communication device itself, or may be an element or module such as a chip inside the second communication device.
  • the device includes a unit for executing the communication method provided by any possible implementation manner of the third aspect or the fourth aspect, so it can also be beneficial for implementing the communication method provided by the third aspect or the fourth aspect effect (or advantage).
  • an embodiment of the present application provides an apparatus, and the apparatus may be a first communication device.
  • the apparatus includes at least one memory, a processor, and a transceiver.
  • the processor is used for calling the code stored in the memory, and in combination with the transceiver, executes the communication method provided by any feasible implementation manner of the first aspect or the second aspect.
  • an embodiment of the present application provides an apparatus, and the apparatus may be a second communication device.
  • the apparatus includes at least one memory, a processor, and a transceiver.
  • the processor is used for calling the code stored in the memory, and in combination with the transceiver, executes the communication method provided by any feasible implementation manner of the third aspect or the fourth aspect.
  • an embodiment of the present application provides an apparatus, and the apparatus may be a first communication device.
  • the apparatus includes: at least one processor and an interface circuit.
  • the interface circuit is used to receive code instructions and transmit them to the processor.
  • the processor is configured to run the above code instructions to implement the communication method provided by any feasible implementation manner of the above first aspect or the second aspect, and can also implement the communication method provided by the above first aspect or the second aspect. beneficial effect (or advantage).
  • an embodiment of the present application provides an apparatus, and the apparatus may be a second communication device.
  • the apparatus includes: at least one processor and an interface circuit.
  • the interface circuit is used to receive code instructions and transmit them to the processor.
  • the processor is configured to run the above code instructions to implement the communication method provided by any feasible implementation manner of the third aspect or the fourth aspect, and can also implement the communication method provided by the third aspect or the fourth aspect. beneficial effect (or advantage).
  • an embodiment of the present application provides a computer-readable storage medium, where an instruction is stored in the computer-readable storage medium, and when the instruction is executed on a computer, any one of the first aspect or the second aspect is implemented
  • the communication method provided by a feasible implementation manner can also achieve the beneficial effects (or advantages) of the communication method provided by the first aspect or the second aspect.
  • an embodiment of the present application provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the instructions are run on a computer, any one of the third aspect or the fourth aspect is implemented
  • the communication method provided by a feasible implementation manner can also achieve the beneficial effects (or advantages) of the communication method provided by the third aspect or the fourth aspect.
  • an embodiment of the present application provides a computer program product containing instructions.
  • the computer program product runs on a computer, the computer executes the communication method provided in the first aspect or the second aspect, and can also realize Advantageous effects of the communication method provided by the first aspect or the second aspect.
  • an embodiment of the present application provides a computer program product containing instructions.
  • the computer program product When the computer program product is run on a computer, the computer executes the communication method provided in the third aspect or the fourth aspect, and can also realize The beneficial effects provided by the communication method provided by the third aspect or the fourth aspect.
  • an embodiment of the present application provides a communication system, where the communication system includes the first communication device involved in the first aspect or the second aspect, and the second communication device involved in the third aspect or the fourth aspect .
  • the resource allocation problem of the DMRS with time domain resources exceeding 14 symbols can be solved, and the applicability of communication technologies such as 5G can be improved.
  • FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of the present application.
  • FIG. 2 is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of a first time domain resource provided by an embodiment of the present application.
  • FIG. 4 is another schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 5 is another schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 6 is another schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 7 is another schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 8 is another schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 9 is another schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 10 is another schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 11 is another schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of a device provided by an embodiment of the present application.
  • FIG. 13 is another schematic structural diagram of a device provided by an embodiment of the present application.
  • FIG. 14 is another schematic structural diagram of a device provided by an embodiment of the present application.
  • FIG. 15 is another schematic structural diagram of an apparatus provided by an embodiment of the present application.
  • the communication methods provided in the embodiments of the present application can be applied to various communication systems, such as: for example, MTC systems, code division multiple access (CDMA) systems, wideband code division multiple access (WCDMA) systems ) system, general packet radio service (general packet radio service, GPRS), long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD), universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, fifth generation (5th generation, 5G) system or new radio (new radio, NR) etc.
  • MTC systems code division multiple access (CDMA) systems, wideband code division multiple access (WCDMA) systems
  • general packet radio service general packet radio service, GPRS
  • long term evolution long term evolution
  • LTE long term evolution
  • LTE frequency division duplex frequency division duplex
  • FDD frequency division duplex
  • TDD time division duplex
  • UMTS universal
  • the communication methods provided in the embodiments of the present application are specifically executed by the first communication device and/or the second communication device.
  • the above-mentioned first communication device may be a terminal device in the above-mentioned various communication systems
  • the above-mentioned second communication device may be a network device in the above-mentioned various general systems.
  • the above terminal equipment may specifically refer to user equipment, access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user equipment.
  • the terminal device may also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in 5G networks or terminals in the future evolution of the public land mobile network (PLMN) equipment, etc., which are not limited in this embodiment of the present application.
  • the network device involved in the embodiments of the present application may be a device used for communicating with a terminal device, which may specifically be a global system of mobile communication (GSM) system or a code division multiple access (code division multiple access, CDMA) system.
  • GSM global system of mobile communication
  • CDMA code division multiple access
  • NodeB can also be a base station (NodeB, NB) in a wideband code division multiple access (WCDMA) system, or an evolved base station (evolutional nodeB) in an LTE system.
  • eNB or eNodeB it can also be a wireless controller in a cloud radio access network (CRAN) scenario, or the network device can be a relay station, an access point, an in-vehicle device, a wearable device, and a 5G network
  • CRAN cloud radio access network
  • the network equipment in the PLMN network or the network equipment in the future evolved PLMN network, etc., are not limited in the embodiments of the present application.
  • the length of a certain time domain resource refers to the number of second time units included in a certain time domain resource.
  • the second time unit is a unit for measuring or indicating the length of time domain resources.
  • the second time unit may be a time domain symbol.
  • the second time unit will be replaced by a time domain symbol for description hereinafter.
  • the so-called first time unit is also a unit for measuring or indicating the length of time domain resources, and a first time unit may include a preset number of second time units.
  • the above-mentioned first time unit may be a time slot.
  • the corresponding symbol number of each time-domain symbol is used to indicate the arrangement order of the time-domain symbol in the time slot. The smaller the number of symbols, the earlier the position of the time domain symbol in the time slot. For example, symbol 11 is the 12th time domain symbol in the slot.
  • each time slot also corresponds to a time slot number to distinguish from each other. For the convenience of understanding, a time slot will be used instead of the first time unit for description hereinafter.
  • DMRS is a sequence known by the transceiver and mapped on time-frequency resources with known locations.
  • the transmitting end uses the same precoding and antenna port as the uplink transmission signal to send the DMRS. Since the DMRS and the uplink transmission signal experience the same fading channel, the receiving end can Based on the known DMRS sequence, the equivalent fading channel experienced by the uplink signal transmission is estimated, and the uplink data demodulation is completed based on the estimated equivalent channel state information.
  • DMRS In the current NR protocol, DMRS needs to be configured for each uplink transmission.
  • DMRS parameters are configured through radio resource control (radio resource control, RRC) signaling.
  • the DMRS parameters may include parameter fields as shown in Table 1-1.
  • Table 1-1 is an existing DMRS parameter table provided by this embodiment of the present application.
  • the parameters of the DMRS may include a type parameter DMRS-type, a maximum length parameter maxLength and a position parameter DMRS-additionalPosition.
  • the type parameter DMRS-type indicates the type of the DMRS, and can be selected as type 1 type1 and type 2 type2.
  • type1 indicates that the DMRS adopts two groups of orthogonal code groups in a comb-tooth-shaped frequency division manner. At this time, each group occupies 6 resource elements (resource elements, REs) in the frequency domain.
  • type2 indicates that the DMRS adopts three groups of orthogonal code groupings in a comb-shaped frequency division manner. At this time, each group can use four REs in the frequency domain.
  • the maximum length parameter maxLength indicates the maximum number of consecutive time-domain symbols that can be occupied by the configured pre-DMRS, and the selectable values are single and double.
  • maxLength When the value of maxLength is single, it means that each DMRS occupies one time-domain symbol.
  • maxLength When the value of maxLength is double, it means that each DMRS can occupy at most 2 consecutive time domain symbols. At this time, whether to occupy one time-domain symbol or two time-domain symbols may be further indicated by some fields in information such as downlink control information (DCI) and the like.
  • DCI downlink control information
  • the position parameter DMRS-additionalPosition indicates the maximum number of time-domain symbols occupied by the additional DMRS in the current uplink transmission, and the number of time-domain symbols occupied by each additional DMRS is the same as the number of time-domain symbols occupied by the pre-DMRS. Its selectable values are Pos0, Pos1, Pos2, and Pos3.
  • the configuration of the pre-DMRS in uplink transmission is necessary. It can be understood that in addition to the pre-DMRS, Pos0, Pos1, Pos2, and Pos3 indicate that the maximum number of additional DMRSs that can be configured is 0, 1, 2, and 3, respectively. .
  • FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of the present application. It can be known from FIG. 1 that the communication system mainly includes a first communication device and a second communication device.
  • the first communication device may establish a connection with the second communication device through wired connection, wireless connection or other connection methods.
  • the first communication device and the second communication device can communicate with each other.
  • the current communication protocol stipulates that when time domain resource scheduling is performed for a certain data transmission (such as PUSCH channel transmission), the maximum time domain resource that can be scheduled at a time The length will not exceed 14.
  • time domain resource scheduling such as PUSCH channel transmission
  • PUSCH physical uplink shared channel
  • PUSCH physical uplink shared channel
  • the packets in multiple time slots can be aggregated into larger packets with a single scheduling resource length greater than 14 time-domain symbols, so as to obtain better channel coding capabilities to improve transmission performance. Aggregating into larger packets can reduce the total packet header overhead and improve transmission efficiency.
  • DMRS demodulation reference signal
  • the technical problem to be solved by the embodiments of the present application is: how to determine the time domain resources of the DMRS in the time domain resources whose length exceeds 14.
  • FIG. 2 is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • the time domain resource determination method provided by the application embodiment will be described by taking a certain data transmission between the first communication device and the second communication device as a specific scenario.
  • the first communication device involved in the embodiments of the present application is a terminal device, and the second communication device is a network device. It can be seen from FIG. 2 that the communication method provided by the embodiment of the present application includes the following steps:
  • the second communication device determines the start and duration indication parameters and the upper limit of the target length corresponding to the first time domain resource.
  • the second communication device sends the start and duration length indication parameters and the upper limit of the target length to the first communication device.
  • the first communication device receives and determines the first time domain resource according to the start and duration length indication parameters and the upper limit of the target length.
  • the second communication device may first determine the time domain resources required for data transmission with the first communication device this time (for the convenience of understanding and distinction, the following will refer to the first time domain resource (replacement description) corresponding to the start and duration length indication parameters and the upper limit of the target length.
  • the length of the first time domain resource is greater than 14, that is, the number of time domain symbols included in the first time domain resource is greater than 14.
  • the start and duration length indication parameters and the target length upper limit corresponding to the first time domain resource are mainly used to indicate the length of the first time domain resource and the availability of the first time domain resource between the first communication device and the second communication device. The location in the time domain resource.
  • the second communication device may first determine the length and starting position of the first time domain resource according to the preset time domain resource scheduling algorithm and the current time domain resource utilization situation.
  • the length of the first time domain resource is the number of time domain symbols included in the first time domain resource.
  • the starting position of the first time domain resource is used to indicate the position of the first time domain symbol of the first time domain resource in the first time slot occupied by the first time domain symbol.
  • the starting position of the first time domain resource is the sequence number of the first time domain symbol of the first time domain resource in the first time slot occupied by the first time domain symbol.
  • the first time domain resource determined by the second communication device may include at least two consecutive sub-time domain resources.
  • the at least two sub-time domain resources are time domain resources in at least two adjacent first time units.
  • the at least two sub-time domain resources are in one-to-one correspondence with the at least two adjacent first time units.
  • the sum of the lengths of the at least two sub-time-domain resources is equal to the length of the first time-domain resources.
  • the at least two sub-time-domain resources are time-domain resources in at least two adjacent time slots.
  • one time slot includes one sub-time domain resource.
  • the resource length of each sub-time domain resource is less than or equal to 14. For example, please refer to FIG.
  • the above-mentioned first time domain resource may include at least two sub-time domain resources, and it is assumed here that the first time domain resource includes a sub-time domain resource j1 and a sub-time domain resource j2.
  • the sub-time domain resource j1 may be included in the time slot i1 occupied by the first time domain resource, and the sub-time domain resource j1 occupies the 11th, 12th, and 13th symbols in the time slot i1.
  • the sub-time domain resource j2 may be included in the time slot i2 occupied by the first time domain resource, and the sub-time domain resource j2 occupies the first to twelfth time domain symbols in the time slot i2.
  • Time slot i1 and time slot i2 are adjacent time slots. In the scenario shown in FIG. 3 , the length of the first time domain resource determined by the second communication device is 15, the starting position corresponding to the first time domain resource is 11, and the starting time corresponding to the first time domain resource is 11.
  • the gap parameter is i1.
  • the second communication device can determine the length of the first time domain resource and the starting position of the first time domain resource according to the length of the first time domain resource.
  • the initial and persistent length indication parameters and the upper limit of the target length corresponding to the first time domain resource are determined.
  • the second communication device indicates the length and the starting position of the first time domain resource to the first communication device by using the adjustable upper limit of the target length and the start and duration indication parameters already proposed in the existing protocol.
  • the method for determining time domain resources provided by the present application can be compatible with the configuration process of time domain resources with less than 14 time domain symbols provided by existing protocols, which facilitates the practical application of the method for determining time domain resources provided by the present application.
  • the second communication device may first determine an upper limit of the target length corresponding to the first time domain resource.
  • the upper limit of the target length is the maximum number of time-domain symbols that can be included in the first time-domain resource, and can also be understood as the maximum length of the first time-domain resource.
  • the upper limit of the target length may be predefined by the second communication device, or configured for the second communication device by other communication devices other than the second communication device, or calculated by the second communication device according to a preset calculation rule , this application does not make any specific restrictions.
  • the above-mentioned initial and persistent length indication parameters and the target length upper limit may be It is sent to the first communication device, so that the first communication device can determine the length and start position of the first time domain resource based on the start and duration indication parameters and the upper limit of the target length.
  • the second communication device may send the above-mentioned start and duration length indication parameters and the upper limit of the target length to the first communication device through the same or different messages.
  • the second communication device may carry the above-mentioned start and duration indication parameters on the first message, and send the start and duration indication parameters to the first communication device through the first message.
  • the second communication device may also carry the above target length upper limit on the second message, and send the target length upper limit to the first communication device through the second message.
  • the second communication device may carry the above-mentioned start and duration length indication parameters and the target length upper limit at the same time on the first message, and send the target length upper limit and the start and duration length indication parameters to the first message through the first message.
  • the above-mentioned first message may specifically be radio resource control (radio resource control, RRC) signaling.
  • the above-mentioned second message may specifically be downlink control information (downlink control information, DCI).
  • the second communication device may carry the above-mentioned start and duration length indication parameters and the upper limit of the target length in medium RRC signaling, and send the above-mentioned start and duration length indication parameters and the upper limit of target length to the above-mentioned No. 1 through RRC signaling.
  • a communication device may carry the above-mentioned start and duration length indication parameters and the upper limit of the target length in medium RRC signaling, and send the above-mentioned start and duration length indication parameters and the upper limit of target length to the above-mentioned No. 1 through RRC signaling.
  • the second communication device may carry the above-mentioned start and duration indication parameters in the RRC signaling, carry the above-mentioned target length upper limit in the middle DCI, and then use the RRC signaling and DCI to indicate the above-mentioned start and duration lengths.
  • the parameter and the first length upper limit indication parameter are sent to the first communication device.
  • the process of sending the above-mentioned upper limit of the target length by the second communication device may have various implementation manners. The various implementations will be described in detail below.
  • the second communication device may directly carry the value of the upper limit of the target length in the first message or the second message, and send it to the first communication device. For example, assuming that the upper limit value of the target length determined by the second communication device is 2, the second communication device can convert the value 2 of the upper limit of the target length into a binary number 11, and carry the binary number 11 in the first message or the second communication device. In the second message, the upper limit of the target length is sent to the first communication device.
  • the second communication device directly sends the upper limit of the target length to the first communication device, and the method is simple and easy to implement.
  • the second communication device may obtain an index value corresponding to the value of the target length upper limit from a preset or configured length upper limit set according to the target length upper limit.
  • the length upper limit set includes one or more index values corresponding to different length upper limits, and the index value may also be referred to as a second length upper limit indication parameter.
  • Table 1-2 is a length upper limit set provided by the embodiment of the present application. As shown in Table 1-2, the length upper limit set includes 4 length upper limit values of a1, a2, a3 and a4 and a second length upper limit indication parameter 00 corresponding to 2 bits of a1, a2, a3 and a4 respectively , 01, 10, 11.
  • the second communication device may determine that the above-mentioned second upper length limit indication parameter is 01. Then, the second communication device may carry the second upper length limit indication parameter corresponding to the upper limit of the target length in the first message or the second message, so as to send the upper limit of the target length to the first communication device.
  • the second communication device indicates the target length upper limit from the length upper limit set of the first communication device through a second length upper limit indication parameter (ie an index value) with a small amount of data.
  • the method is simple and easy to implement, and can reduce the first length limit. Signaling overhead between the communication device and the second communication device.
  • the second communication device may acquire the basic upper limit of the number of time-domain symbols corresponding to the first time-domain resource.
  • the upper limit of the basic number may be 14.
  • the second communication device may determine a target upper limit adjustment coefficient corresponding to the target length upper limit according to the basic number upper limit and the target length upper limit.
  • the second communication device may determine the ratio between the target length upper limit and the number of basic upper limits as the target upper limit adjustment coefficient corresponding to the target length upper limit. It should be noted here that the ratio between the upper limit of the target length and the number of basic upper limits may be an integer greater than or equal to 1, such as 2 or 3, or a decimal greater than or equal to 1, such as 1.1, 1.2, etc.
  • the second communication device may determine the length upper limit indication parameter corresponding to the above target upper limit adjustment coefficient (for ease of understanding and distinction, the description will be replaced by the first length upper limit indication parameter below). For example, the second communication device may find the length upper limit indication parameter corresponding to the above target upper limit adjustment coefficient from a preset upper limit adjustment coefficient set according to the above target upper limit adjustment coefficient.
  • the above-mentioned upper limit adjustment coefficient may include one or more upper limit adjustment coefficients with different values, and a length upper limit indication parameter corresponding to each upper limit adjustment coefficient.
  • the second communication device may also directly determine the target adjustment coefficient as the first length upper limit indication parameter.
  • the second communication device may determine the binary number 11 corresponding to 2 as the above-mentioned first length upper limit indication parameter. Then, the second communication device may carry the first length indication parameter corresponding to the upper limit of the target length in the first message or the second message, so as to send the upper limit of the target length to the first communication device.
  • the second communication device can indicate the target upper limit adjustment coefficient to the first communication device through a first length upper limit indication parameter, and then the first communication device can subsequently determine the real target length according to the target upper limit adjustment coefficient and the basic number upper limit
  • this method can facilitate the adjustment of the size of the upper limit of the target length, and on the other hand, it also simplifies the process of obtaining the upper limit of the target length by the first communication device.
  • the above-mentioned second communication device may also determine the initial time slot parameter of the above-mentioned first time-domain resource.
  • the initial time slot parameter of the first time domain resource is used to indicate the position of the time slot where the first time domain symbol of the first time domain resource is located.
  • the initial time slot parameter of the first time domain resource is the sequence number of the time slot where the first time domain symbol of the first time domain resource is located in the entire time domain resource. Then, the second communication device can send the above-mentioned starting time slot parameter to the first communication device, so that the first communication device can determine the position of the time slot where the first time-domain symbol of the above-mentioned first time-domain resource is located.
  • the second communication device may determine the starting time slot of the time domain resource (for convenience of distinction, the description will be replaced by the second time domain resource below) used by the second communication device to send the first message and/or the second message. Location. It can be understood that the second time domain resource used by the second communication device to send the first message and/or the second message is the time domain used by the first communication device to receive the first message and/or the second message. resource. Then, the second communication device may determine the number of timeslot offsets between the first timeslot of the first time-domain resource and the first timeslot of the second time-domain resource, and offset the timeslot by the number of timeslots sent to the first communication device. In this way, the subsequent first communication device can determine the initial time slot parameter of the first time domain resource according to the number of time slot offsets and the position of the first time slot of the second time domain resource.
  • the first communication device may receive and determine the first time domain resource according to the start and duration length indication parameters and the upper limit of the target length.
  • the first communication device can extract the above-mentioned start and duration length indication parameters from the message .
  • the first communication device may directly extract the upper limit of the target length after receiving the first message or the second message carrying the upper limit of the target length . For example, if the first communication device determines that the upper limit of the target length is 11 in the first message or the second message, it can be converted from binary to decimal to determine the real upper limit of the target length to be 2.
  • the first communication device may also extract the upper limit of the target length.
  • the second length upper limit indication parameter, and the length upper limit corresponding to the second length upper limit indication parameter is extracted from the corresponding length upper limit set, and the length upper limit is the target length upper limit.
  • the length upper limit set used by the second communication device and the length upper limit set used by the first communication device are the same, and the length upper limit set used by the first communication device may be the same as the length upper limit set used by the second communication device. configured.
  • the first communication device may first extract the above The first length upper limit indication parameter. Then, the second communication device may find the target upper limit adjustment coefficient corresponding to the first length upper limit indication parameter from the preset upper limit adjustment coefficient set according to the first length upper limit set.
  • the upper limit adjustment coefficient set and the upper limit adjustment coefficient set used by the second communication device are the same.
  • the second communication device may directly determine the value of the first length upper limit indication parameter as the above-mentioned target adjustment coefficient.
  • the first communication device may further determine the upper limit of the target length according to the upper limit of the target upper limit adjustment coefficient and the upper limit of the basic number of time domain symbols corresponding to the first time domain resource.
  • the upper limit of the basic number may be 14.
  • the first communication device may first calculate the product of the above-mentioned target upper limit adjustment coefficient and the basic number of time domain symbols corresponding to the first time domain resource, and then perform rounding up, rounding down or rounding off the product. Perform operations such as rounding, and use the processed product as the upper limit of the target length above.
  • the first communication device may determine the length and start position of the first time domain resource according to the start and duration length indication parameters and the upper limit of the target length. Specifically, it is assumed that the length of the above-mentioned first time domain resource is L, the starting position is S, and the upper limit of the target length is a. After the first communication device obtains the above-mentioned start and duration indication parameters SLIV, it can divide SLIV by a to obtain the divisor D1 and the remainder D2, and then the first communication device can determine whether the divisor D1 is less than or equal to a/2. If the determination is yes, the first communication device may determine D1+1 as the length L of the first time domain resource, and determine the remainder D2 as the starting position S.
  • the first communication device may also acquire the corresponding number of time slot offsets that carry the above-mentioned first time domain resource. Then, the initial time slot parameter of the first time domain resource is determined based on the position of the first time slot for receiving the second time domain resource used and the number of time slot offsets. It can be understood that, the corresponding number of time slot offsets carrying the first time domain resource may also be indicated by the first message or the second message.
  • the first communication device After the first communication device obtains the above-mentioned length, starting position, and starting time slot parameters of the first time domain resource, it can completely determine from the available time domain resources between the first communication device and the second communication device.
  • the above-mentioned first time domain resource The above-mentioned first time domain resource.
  • FIG. 4 is another schematic flowchart of a communication method provided by an embodiment of the present application. As shown in FIG. 4, the above steps S10, S20 and S30 can also be replaced by the following steps:
  • the second communication device determines a target index value corresponding to the length and the starting position of the first time domain resource from a preset time domain resource indication set according to the length and starting position of the first time domain resource.
  • the second communication device sends the target index value to the first communication device.
  • the first communication device receives and determines the first time domain resource according to the target index value.
  • the second communication device may first determine the length and starting position of the first time domain resource. Then, the target index value corresponding to the length and the starting position of the first time domain resource is determined from the preset time domain resource indication set according to the length and starting position of the first time domain resource.
  • the second communication device may determine the length and starting position of the first time domain resource.
  • the second communication device can determine the target corresponding to the length and starting position of the first time domain resource from the preset or configured time domain resource indication set according to the length and starting position of the first time domain resource index value.
  • the time domain resource indication set includes one or more index values with different values and the lengths and start positions of the different values corresponding to each index value.
  • the time domain resource indication set should include at least one index value, and the length of the corresponding time domain resource should be greater than 14.
  • Table 1-3 is a time domain resource indication set provided by this embodiment of the present application. As shown in Table 1-3, the time domain resource set includes a total of 16 index values from 1 to 16, and the lengths and start positions corresponding to the 16 index values respectively. Among them, the length corresponding to some index values is greater than 14. For example, the length of the corresponding time domain resource for an index value of 1 is greater than 14.
  • index value Length of time domain resource The starting position of the time domain resource 1 17 0
  • the time domain resource indication set provided by the embodiments of the present application can be obtained by extending or modifying the time domain resource indication set provided by the prior art.
  • one or more index values may be added to the time domain resource indication set provided by the current NR standard, and the length of the time domain resource corresponding to the one or more index values added must be greater than 14.
  • the length of the time domain resource corresponding to some index values in the time domain resource indication set provided by the current NR standard may also be modified to a length greater than 14.
  • the second communication device after the second communication device determines the target index value, the second communication device sends the target index value to the first communication device.
  • the second communication device may carry the above target index value in the DCI, and send the target index value to the first communication device through the DCI.
  • the second communication device may further carry the above target index value in the RRC signaling, and send the target index value to the first communication device through the RRC signaling.
  • the second communication device may further determine the initial time slot parameter of the first time domain resource, and send the initial time slot parameter of the first time domain resource to the first communication device.
  • the process of determining and sending the first time slot parameter of the first time domain resource by the second communication device to the first communication device reference may be made to the process of determining and sending the first time domain resource to the first communication device described in step S20 above. The process of starting time slot parameters is not repeated here.
  • the first communication device may receive the above-mentioned target index value, and determine the above-mentioned first time domain resource according to the target index value. Specifically, after receiving the above target index value through RRC signaling or DCI message, the first communication device can find the length and start position corresponding to the target index value from the corresponding time domain resource indication set according to the above target index value , and the length and starting position corresponding to the target index value are the length and starting position of the above-mentioned first time domain resource. It should be noted here that the time domain resource indication set used by the first communication device and the time domain resource indication set used by the second communication device are the same.
  • the time domain resource indication set used by the first communication device may be obtained by configuring the second communication device. Then, the first communication device can completely determine the above-mentioned time domain resources from the available time-domain resources between the first communication device and the second communication device according to the length, start position, and start time slot parameters of the above-mentioned first time-domain resource. The first time domain resource.
  • the second communication device directly indicates the length and starting position of the first time domain resource through a target index value to the first communication device, which can reduce the need for the second communication device to indicate the first time domain for the first communication.
  • the length of the resource and the signaling resources occupied by the starting position can improve the resource utilization efficiency of the second communication device and the first communication device.
  • FIG. 5 is another schematic flowchart of a communication method provided by an embodiment of the present application. It can be seen from FIG. 5 that the communication method provided by the present application may further include steps:
  • the first communication device determines that the length of the first sub-time domain resource in the at least two sub-time domain resources in the first time-domain resource is equal to or greater than the first length threshold, or determines the first sub-time domain resource If the corresponding transmission code rate is smaller than the preset transmission code rate, it is determined that a demodulation reference signal DMRS is configured on the first sub-time domain resource.
  • the first communication device may further determine at least two sub-time domain resources included in the first time domain resource (for the convenience of understanding, the following will be shown in FIG. 3 ).
  • the structure of the first time domain resource shown is described as an example).
  • the first communication device may determine whether each sub-time domain resource is configured with a DMRS according to the length of each sub-time domain resource or the transmission code rate.
  • the transmission code rate corresponding to each sub-time domain resource included in the first time domain resource is determined by the transmission code rate obtained by the first communication device transmitting on the first time domain resource.
  • the size of the transport block transmitted on each sub-time-domain resource is equal to the size of the transport block transmitted on the first time-domain resource, but the length of each sub-time-domain resource is smaller than the length of the first time-domain resource. Therefore, the transmission code rate of each sub-time domain resource will be higher than the transmission code rate of the first time domain resource.
  • the first communication device can calculate and determine the transmission code rate on each sub-time domain resource.
  • the first communication device may determine whether the sub-time domain resource j1 is the first sub-time domain resource. For example, if the first communication device determines that the length of the sub-time domain resource j1 is equal to or greater than the first length threshold, it may determine that the sub-time domain resource j1 is the first sub-time domain resource. For another example, if the first communication device determines that the transmission code rate of the sub-time domain resource j1 is smaller than the preset transmission code rate, it may determine that the time-domain resource j1 is the first sub-time domain resource. After the first communication device determines that the sub-time domain resource j1 is the first sub-time domain resource, it is determined that the demodulation reference signal DMRS is configured on the sub-time domain resource j1. Then, the first communication device
  • the length of the sub-time domain resource j1 and the first number corresponding to the above-mentioned first time domain resource can be obtained.
  • the first number is the maximum number of additional DMRSs that can be configured on the first time domain resource, which is usually indicated by the location parameter DMRS-additionalPosition corresponding to the first time domain resource.
  • Pos0 the position parameter DMRS-additionalPosition corresponding to the first time domain resource takes a value of Pos0
  • Pos1 the position parameter DMRS-additionalPosition corresponding to the first time domain resource takes a value of Pos1
  • the above-mentioned first number takes a value of 1.
  • the first communication device may determine, according to the length of the sub-time-domain resource j1, the first number corresponding to the first time-domain resource, and the preset or configured DMRS resource mapping set, the length of the DMRS in the funding time-domain resource j1. time domain resources.
  • the DMRS resource mapping set may include the length of one or more different values, the value of one or more different position parameters DMRS-additionalPosition, and the length of any value and the length of any value.
  • the DMRS resource indication information corresponding to the position parameter DMRS-additionalPosition under the value.
  • the above one or more position parameters DMRS-additionalPosition with different values includes a certain position parameter DMRS-additionalPosition
  • the value is Pos1 (that is, the first one above The value of the number is 1)
  • the DMRS resource indication information corresponding to the position parameter DMRS-additionalPosition of the length L1 and the value of Pos1 is used to indicate the time domain resources of the length L1, the pre-DMRS and the additional DMRS occupied The location of the time domain resource.
  • Table 1-4 is a DMRS resource mapping set provided by the embodiment of the present application.
  • the DMRS resource mapping set includes 14 lengths of 1, 2, . value, and DMRS resource indication information corresponding to different length values and different position parameter DMRS-additionalPosition values.
  • l 0 is the relative position between the time domain symbol occupied by the pre-DMRS and the first time domain symbol of the time domain resource of a certain length.
  • the mapping type of PUSCH is Type A (TypeA)
  • the number of time domain resources required for a single transmission is not less than 4 time domain symbols. It is determined by the communication device itself, or configured by the second communication device for the first communication device).
  • mapping type of PUSCH is Type B (Type B)
  • transmission of any symbol length can be performed (that is, the length ld of the configured time domain resource can be less than 4).
  • the value of l0 is 0, that is, the preamble
  • the time domain symbol occupied by the DMRS is the first time domain symbol in the to-be-configured time domain resource.
  • the first communication device may determine that the length of the above-mentioned sub-time domain resource j1 is 3. If the first communication device determines that the position parameter DMRS-additionalPosition corresponding to the first time domain resource is Pos3 (that is, the first value above is 3), the sub-time domain resource j1 can be found from Table 1-4 The corresponding DMRS resource indication information is l 0 . Assuming that the first communication device determines that l0 is 2, the first communication device may determine that the second time domain symbol in the sub-time domain resource j1 is the time domain resource of the DMRS corresponding to the sub-time domain resource j1.
  • the first communication device determines that the length of the sub-time domain resource j1 is less than the first length threshold, or determines that the transmission code rate of the sub-time domain resource j1 is equal to or greater than the preset transmission code rate, the sub-time domain resource can be determined.
  • j1 is the second sub-time domain resource, then it is determined that no DMRS is configured on the sub-time domain resource j1.
  • the first communication device can also use the same process to determine whether the sub-time domain resource j2 is configured with DMRS. Since this process is the same as the process for the first communication device to determine whether the sub-time domain resource j1 is configured with DMRS, here It will not be described in detail.
  • the above-mentioned first length threshold may be a preset fixed value, or may be determined by the length of the first time domain resource.
  • the first communication device may use the product of a preset coefficient and the length of the first time domain resource as the above-mentioned first length threshold.
  • the corresponding first thresholds are different.
  • a first time domain resource satisfying a first length range corresponds to a first threshold
  • a first time domain resource satisfying a second length range corresponds to another first threshold.
  • the preset transmission code rate may be a preset fixed value, or may be related to the length of the first time domain resource.
  • the preset transmission code rate is determined by the length of the first time domain resource, and when the length of the first time domain resource is different, the corresponding first threshold is different.
  • the first time domain resource satisfying the first length range corresponds to one preset transmission code rate
  • the first time domain resource satisfying the second length range corresponds to another preset transmission code rate.
  • FIG. 6 is another schematic flowchart of a communication method provided by an embodiment of the present application. It can be seen from FIG. 6 that the above step S40 can be replaced by the following steps:
  • the first communication device determines the length and the first number of the first time domain resource.
  • the first communication device may determine the length of the first time domain resource according to the number of time domain symbols included in the first time domain resource.
  • the first communication device may also obtain the first number corresponding to the first time domain resource.
  • the description of the first number reference may be made to the description in the foregoing step S40, which will not be repeated here.
  • the first communication device determines the time domain resource of the demodulation reference signal DMRS on the first time domain resource according to the length and the first number of the first time domain resource.
  • the first communication device may The time domain resource of the DMRS is determined on the resource. In other words, the first communication device will determine the time domain resource of the DMRS as a whole for the first time domain resource, instead of determining the time domain resource of the DMRS separately for each sub-time domain resource.
  • the first communication device determines the time domain resource of the sub-time domain resource j1 according to the length of the sub-time domain resource j1 and the first number
  • the first communication device Specifically, the time domain resource of the DMRS in the first time domain resource may also be determined according to the length of the first time domain resource, the first number, and the corresponding DMRS resource mapping set.
  • the DMRS resource mapping set used by the first communication device should include at least one length with a value greater than 14, and the location parameter
  • the values of DMRS-additionalPosition are not limited to Pos0, Pos1, Pos2, and Pos3.
  • the value of the position parameter DMRS-additionalPosition may also include Pos4, Pos5, etc. (that is, the value of the first number above may be greater than 3).
  • Table 1-5 is another DMRS resource mapping set provided by the embodiment of the present application.
  • the DMRS resource mapping set includes not only multiple lengths with a value less than 14, but also multiple lengths with a value greater than 14.
  • the value of the position parameter DMRS-additionalPosition is not limited to the original Pos0, Pos1, Pos2, and Pos3, but also includes Pos4 and Pos5.
  • Table 1-5 is only an example of the DMRS resource mapping set involved in this step.
  • the value of the length of time domain resources may be more or less than Table 1-5.
  • the value of the position parameter DMRS-additionalPosition may be more or less than that shown in Table 1-5, which is not specifically limited in this application.
  • the first communication device After the first communication device obtains the above DMRS resource mapping set, it can determine the first time domain resource from the DMRS resource mapping set by using the length of the first time domain resource and the value of the position parameter DMRS-additionalPosition corresponding to the first number.
  • DMRS resource indication information corresponding to a time domain resource. Then, here, the first communication device determines the time domain resource of the DMRS on the first time domain resource according to the DMRS resource indication information.
  • the specific process refer to the process in which the first communication device determines the time domain resource of the sub-time domain resource j1 according to the length and the first number of the sub-time domain resource j1 described above, and will not be repeated here.
  • the determination of the time domain resource of the DMRS on the first time domain resource can be equivalent to each sub-time domain resource.
  • the time domain resources of the DMRS on the domain resources are also determined.
  • FIG. 7 is another schematic flowchart of a communication method provided by an embodiment of the present application. It can be seen from FIG. 7 that in the case where the first communication device is the sender (that is, the second communication device is the receiver), the first communication device determines whether each sub-time domain resource is configured with DMRS through the above step S40, or through the above steps. After S40 and S41' determine the time domain resources of the DMRS on the first time domain resources, the following steps may be performed:
  • the first communication device performs signal transmission through a second sub-time domain resource in the at least two sub-time domain resources.
  • the signal sent by the first communication device through the second sub-time-domain resource should satisfy at least one of the following: the same transmit power, the same precoding, and the same transmit port.
  • the signal transmission performed by the first communication device through the sub-time domain resource j1 should be It is guaranteed that at least one of transmit power, precoding or transmit port used for signal transmission through sub-time domain resource j1 is the same.
  • the first communication device when the first communication device performs at least two signal transmissions to the second communication device through the at least two sub-time-domain resources, if the first communication device determines that any sub-time-domain resource in the at least two sub-time-domain resources If no DMRS is configured, the signal transmission performed by the first communication device through any sub-time domain resource and the signal transmission performed through the sub-time domain resource configured with DMRS should satisfy at least one of the following: the same transmit power and the same precoding , the transmitting port is the same. It should be noted here that one sub-time domain resource is only used for one signal transmission.
  • the second communication device when the second communication device is the receiver, the second communication device can also use the same method as the above-mentioned first communication to determine whether each sub-time domain resource in the first time domain resource is configured with DMRS, Then, the signal reception to the first communication device is completed.
  • the process for the second communication device to determine the time domain resources of the DMRS on the first time domain resources is the same as the process for the first communication device to determine the time domain resources for the DMRS on the first time domain resources, and will not be repeated here.
  • FIG. 8 is another schematic flowchart of a communication method provided by an embodiment of the present application.
  • the first communication device when the first communication device is the receiver, the first communication device After the DMRS configuration is performed on each sub-time domain resource through the time domain resource of the DMRS determined by the above step S40 or steps S40 and S41', the steps can also be performed:
  • the first communication device determines the channel estimation result corresponding to the first sub-time domain resource as the channel estimation result when the signal is received through the second sub-time domain resource.
  • the channel estimation result obtained when the signal is received through the sub-time domain resource j1 can be reused.
  • the first communication device when the first communication device receives signals from the second communication device at least twice through the at least two sub-time domain resources, if the first communication device determines any sub-time domain in the at least two sub-time domain resources No DMRS is configured on the resource, then the first communication device may determine the channel estimation result corresponding to the sub-time domain resource configured with DMRS as the channel estimation result when the signal is received through any of the sub-time domain resources, and then complete the channel estimation result in this sub-time domain resource. Signal reception on any sub-time domain resource.
  • the second communication device can also use the same method as the above-mentioned first communication to determine the time domain resource on the first time domain resource. time domain resources of the DMRS, and then complete the signal transmission to the first communication device.
  • the process for the second communication device to determine the time domain resources of the DMRS on the first time domain resources is the same as the process for the first communication device to determine the time domain resources for the DMRS on the first time domain resources, and will not be repeated here.
  • this time of data transmission may be a certain uplink or downlink repeated transmission between the first communication device and the second communication device.
  • the data transmission this time may also be another uplink or downlink data transmission process between the first communication device and the second communication device except repeated transmission, which is not specifically limited in this application.
  • the object to be transmitted may be a PUSCH, a physical uplink control channel (PUCCH), a physical downlink shared channel (PDSCH) or a physical uplink control channel (PDSCH). Any channel in channels such as a downlink control channel (physical dowmlink control channel, PDCCH) is not specifically limited in this application.
  • FIG. 9 is another schematic flowchart of a communication method provided by an embodiment of the present application. As can be seen from Figure 9, the communication method includes the following steps:
  • the first communication device determines a second time domain resource.
  • the first communication device may determine a second time domain resource for transmission according to the indication information of the second device, and the second time domain resource includes a second time unit (hereinafter referred to as time domain) symbol) spanning multiple time slots, and/or, the number of second time units (hereinafter referred to as time domain symbols) included in the second time domain resource is greater than 14.
  • time domain second time unit
  • time domain symbols the number of second time units included in the second time domain resource is greater than 14.
  • the first communication device divides the second time domain resource into K sub-time domain resources.
  • the first communication device may divide the second time domain resource into K sub-time domain resources.
  • K is a positive integer greater than or equal to 2.
  • the K sub-time domain resources include the first sub-time domain resource, the second sub-time domain resource up to the K th sub-time domain resource.
  • the sum of the lengths of the above-mentioned sub-time-domain resources is equal to the length of the above-mentioned second time-domain resources. It should be noted that the length of each sub-time domain resource in the above K sub-time domain resources should be roughly equal, and the length of each sub-time domain resource can be understood as the number of time domain symbols included in each sub-time domain resource.
  • the first communication device can determine the length of the second time domain resource (it is assumed to be L1 here).
  • L1 is equal to the time included in the second time domain resource.
  • the number K of sub-time domain resources For example, the first communication device can obtain the above K by calculating the following formula (1).
  • the first communication device may further determine the length of each sub-time domain resource respectively. For example, the first communication device may first calculate a length L2 by using the following formula (2), and determine the length L2 as the first sub-time domain resource and the second time-domain resource in the above K sub-time domain resources until The length of the K-1th sub-time domain resource.
  • the first communication device may first calculate K through the above formula (1). here, That is, the first communication device may determine to divide the second time domain resource into 3 sub-time domain resources. Then, the first communication device may calculate the length L2 of the first sub-time domain resource and the second sub-time domain resource in the above-mentioned three sub-time domain resources according to the above formula 2. here, (A round-up manner is adopted here), that is, the first communication device may determine that the length of the first sub-time domain resource and the second sub-time domain resource is 10.
  • the first communication device may calculate the difference ⁇ L between the length L1 and the sum of the lengths of the first sub-time domain resource and the second sub-time domain resource, and determine the difference ⁇ L as the three sub-time domain resources The length of the third sub-time domain resource in .
  • the first communication device may divide the above-mentioned second time-domain resource according to the length of each sub-time domain resource, and then determine to obtain the above-mentioned K sub-time domain resources. For example, in combination with the foregoing details, after the first communication device determines to divide the second time domain resource into three sub-time domain resources, and the lengths of the three sub-resources are 10, 10, and 9, respectively, the first communication device can start from 10 consecutive time domain symbols are determined in the second time domain resource, and the 10 consecutive time domain symbols are determined as the first sub-time domain resource. Similarly, the first communication device may continue to use the same method to determine the second sub-time domain resource with a length of 10 and the third sub-time domain resource with a length of 9 from the above-mentioned second time domain resources.
  • the above-mentioned implementation manner is used to divide the K sub-time domain resources, so that the lengths of each sub-time domain resource in the K sub-time domain resources obtained by the division are approximately the same, so that the subsequent determination of each sub-time domain resource can be made.
  • the time domain resources of DMRS are more reasonable.
  • the time sequence of the K sub-time domain resources determined by the above method is not limited.
  • the second resource including 29 time-domain symbols is divided into 3 sub-time-domain resources, including the first sub-time-domain resource, the second sub-time-domain resource, and the third sub-time-domain resource, each with a length of 10 ,10,9.
  • the first sub-time-domain resource may be a time-domain resource before the second sub-time-domain resource, or may be a time-domain resource after the second sub-time-domain resource.
  • the second sub-time-domain resource may be a time-domain resource before the third sub-time-domain resource, or may be a time-domain resource after the third sub-time-domain resource.
  • the first sub-time-domain resource may be a time-domain resource before the third sub-time-domain resource, or may be a time-domain resource after the third sub-time-domain resource.
  • the first communication device determines the time domain resource of the DMRS on each sub time domain resource according to the length of each sub time domain resource in the K sub time domain resources.
  • the first communication device may determine the time domain resources of the DMRS on the sub-time domain resources according to the length of each sub-time domain resource.
  • the first communication device since the first communication device performs the same process of determining the time-domain resources of the DMRS on each sub-time-domain resource, the following will take the first sub-time-domain resource in the above K sub-time-domain resources as an example, The process of determining the time domain resource of the DMRS on each sub-time domain resource by the first communication device will be described.
  • the first communication device may acquire the length of the first sub-time domain resource and the second number corresponding to the second time-domain resource.
  • the meaning of the second number here is similar to that of the first number above, that is, the second number is the maximum number of additional DMRSs that can be configured on the second time domain resource, which is usually determined by the position corresponding to the second time domain resource.
  • the first communication device may determine, according to the length of the first time-domain resource, the second number corresponding to the second time-domain resource, and the preset or configured DMRS resource mapping set, the first sub-time-domain resource The time domain resources of the DMRS.
  • the first communication device may determine the time domain resource of the DMRS in the first sub-time domain resource according to the length of the sub-time domain resource j1 described in step S40 of the first embodiment above.
  • the first number corresponding to the first time domain resource and the preset or configured DMRS resource mapping set to determine the process of determining the time domain resource of the DMRS in the sub-time domain resource j1, which will not be repeated here.
  • the first communication device may use the above method to determine the time domain resources of the DMRS on other sub-time domain resources except the first sub-time domain resource in the above-mentioned K sub-time domain resources, so as to obtain the above-mentioned K sub-time domain resources.
  • the time domain resource of the DMRS on each sub-time domain resource in the middle is completed, and then the determination of the time domain resource of the DMRS on the second time domain resource is completed.
  • the foregoing description takes the scenario in which the first communication device sends data to the second communication device through the second time domain resource as an example for description.
  • the second communication device can also use the same method to determine the time domain resource of the DMRS for the second data resource, which will not be repeated this time. .
  • the second time domain resource when the second time domain resource spans multiple time slots, the second time domain resource can be divided into K sub-time domain resources first, and then the second time domain resource can be divided into K sub-time domain resources according to the length of each sub-time domain resource.
  • the time domain resources of the DMRS are determined on the resource, so that the resource allocation problem of the DMRS with time domain resources exceeding 14 symbols can be solved, and the applicability of communication technologies such as 5G can be improved.
  • the second communication device In each scheduled transmission, the second communication device not only configures the time domain resources required for transmission for the first communication device, but also indicates to the first communication device the modulation order that should be used for transmission (here, it is assumed to be Q m ) and the value of the modulation code rate (assuming R x here).
  • the existing NR standards define different values of Q m and R x for different channel conditions.
  • the second communication device dynamically indicates to the first communication device the modulation order Q m and the modulation code rate R x that should be used during transmission through a modulation and coding scheme (MCS) index value.
  • MCS modulation and coding scheme
  • the MCS table includes 32 failed MCS index values from 0 to 31 and the modulation order Q m , modulation code rate R x and spectral efficiency ( Namely spectral efficiency).
  • the first communication device can finally determine, according to the MCS index value and the above-mentioned MCS table, the modulation order Q m and the modulation code rate that should be used during transmission.
  • R x For example, assuming that the first communication device determines that the MCS index value from the second communication device is 4, it can be determined that the modulation order Q m used by the first communication device for transmission is 2, and the used modulation code rate R x is 308/ 1024.
  • the first communication device determines the modulation order Q m and the modulation code rate R x that it should adopt, it can calculate the transport block size (TBS) by using the following formula (3).
  • TBS N RE ⁇ R x ⁇ Q m ⁇ V (3)
  • N RE represents the number of resource elements (resource elements, REs) used for transmitting valid data in the transport block.
  • V is the number of transmission layers when the first communication device and the second communication device support multi-layer transmission.
  • the determined transport block size will also be adapted to the size of the data processing capability of the first communication device.
  • the value of N RE will increase accordingly, which leads to a larger value of TBS determined by formula (3).
  • the data processing capability of the first communication device is limited, and it cannot store and process too much data. Therefore, in the case where the length of the time domain resource scheduled for a single time is greater than 14, it is easy to occur that the data processing capability of the first communication device is insufficient due to the excessively large value of the TBS.
  • the problem to be solved in this embodiment is: how to ensure that the value of TBS is reasonable when the length of the time domain resources scheduled for a single time is greater than 14, so as to avoid the value of TBS and the data processing capability of the first communication device. Occurrence of incompatibility.
  • FIG. 10 is another schematic flowchart of a communication method provided by an embodiment of the present application.
  • the communication method is suitable for a data transmission scenario in which the length of the time domain resource scheduled in a single time is greater than 14, and the communication method can be performed by a second communication device.
  • the communication method includes the following steps:
  • the second communication device acquires target capability indication information corresponding to the first communication device.
  • the second communication device may acquire target capability indication information corresponding to the first communication device.
  • the target capability indication information is mainly used to characterize the data processing capability of the first communication device.
  • the above-mentioned target capability indication information may be the modulation order Q m , the modulation code rate R x or the upper limit value of the transport block size TBS determined and obtained by the first communication device. That is to say, the first communication device can determine the acceptable value of the first communication device based on the target configuration parameters included in its factory configuration information that can indicate the size of its data processing capacity (such as the buffer space parameter of the first communication device, the number of CPU cores, etc.).
  • the modulation order Q m , the modulation code rate R x or the upper limit value of the transport block size TBS and then send the modulation order Q m , the modulation code rate R x or the upper limit value of the transport block size TBS to the second communication device.
  • the second communication device may extract Q1, R1 or TBS1 included in the preset message, and determine the Q1, R1 or TBS1 as the target capability indication information corresponding to the first communication device.
  • the above-mentioned target capability indication information may be the above-mentioned target configuration parameter.
  • the target configuration parameter may be actively reported by the first communication device to the second communication device, or may be extracted by the second communication device from the factory configuration information of the first communication device. No specific restrictions are imposed.
  • the second communication device determines the target MCS index value and/or the target transport layer number according to the target capability indication information, and sends the target MCS index value and/or the target transport layer number to the first communication device.
  • the second communication device may determine, according to the target capability indication information, a target MCS index value and/or a target MCS index value suitable for the data processing capability of the first communication device. or the target transport layer number, and send the target MCS index value and/or the target transport layer number to the first communication device.
  • the target capability indication information is the above-mentioned Q1, R1 or TBS1.
  • the second communication device can first determine a value of a modulation order Q m according to information such as the channel state of the wireless channel used for data transmission (for the convenience of distinction, the value of the first Q m will be used instead of the description below) and the modulation code The value of the rate R x (for the convenience of distinction, the description will be replaced by the first value of R x below).
  • the second communication device may determine whether the above-mentioned value of the first Q m is greater than Q1. If the second communication device determines that the value of the first Q m is less than or equal to Q1, the second communication device may determine the value of the first Q m as the value of the target Q m , and determine the value of the first R x as the value of the target Q m Target R x value.
  • the second communication device may re-determine a new set of values of the modulation order Q m and the modulation code rate R x , and repeat the above judgment operation, Until the second communication device determines that the value of the modulation order Q m generated by it is less than or equal to Q1, at this time, the second communication device needs to set the value of the new modulation code rate R x and the new modulation order generated by the second communication device.
  • the value of Q m is determined as the value of the target R x and the value of the target Q m .
  • the second communication device may determine whether the above-mentioned value of the first Rx is greater than R1. If the second communication device determines that the first Rx value is less than or equal to R1, the second communication device may determine the first Rx value as the target Rx value, and determine the first Qm value as The target Q m value.
  • the second communication device may re-determine a new set of modulation order Qm and modulation code rate Rx , and repeat the above judgment operation, Until the second communication device determines that the value of the generated modulation code rate Rx is less than or equal to R1, at this time, the second communication device needs to set the value of the new modulation code rate Rx generated by it and the new modulation order.
  • the value of Q m is determined as the value of the target R x and the value of the target Q m .
  • the second communication device may first calculate a TBS value according to the above-mentioned first Q m value and first R x value (for convenience of distinction, the following will use the first TBS value instead of description). Then, the second communication device may determine whether the above-mentioned first TBS value is greater than TBS1. If the second communication device determines that the first TBS value is less than or equal to the above TBS1 , the second communication device may determine the first Rx value as the target Rx value, and the first Qm value as the target Qm value.
  • the second communication device may re-determine a new set of values of the modulation order Q m and the modulation code rate R x , and repeat the above calculation of the TBS value and judgment The operation is performed until the second communication device determines that the TBS value calculated by the new modulation code rate R x value and the new modulation order Q m value generated by the second communication device is less than or equal to the above-mentioned TBS1. At this time, the second communication device The generated new modulation code rate R x value and the new modulation order Q m value need to be determined as the target R x value and the target Q m value.
  • the second communication device may look up the MCS index value corresponding to the target Q m value and the target R x value from the preset MCS table based on the above-mentioned target Q m value and the target R x value, and use the The MCS index value is determined as the target MCS index value.
  • the second communication device determines that the value of Q m is 23, it means that the value of 23 is not suitable, and the second communication device can generate a new value of Q m . If the value of the new Q m generated by the second communication device is 21, it means that the value of 21 is suitable, then the second communication device can determine 21 as the value of the target Q m and determine 666/1024 as the target The value of Rx . Further, the second communication device can determine the MCS index value 21 corresponding to 21 and 666/1024 as the target MCS index value.
  • the target capability indication information is a target configuration parameter.
  • the second communication device may first determine the above-mentioned Q1, R1 or TBS1 according to the target configuration parameter.
  • the process for the second communication device to determine Q1, R1 or TBS1 according to the target configuration parameter is the same as the process for the first communication device to determine Q1, R1 or TBS1 according to the target configuration parameter, and details are not repeated here.
  • the second communication device can generate the above-mentioned target MCS index value according to the above-mentioned Q1, R1 or TBS1.
  • the above-mentioned Q1, R1 or TBS1 is determined by the second communication device according to the target configuration parameter, which can save the data processing resources of the first communication device and improve the data processing capability of the first communication device.
  • the second communication device may further determine the preset number of transmission layers as the number of target transmission layers used in this transmission.
  • the above-mentioned preset number of transmission layers is 1.
  • the number of transmission layers may be limited to 1, that is, data transmission is not performed in a multi-layer transmission manner.
  • the second communication device is limited by the modulation order Q m , the modulation code rate R x or the upper limit value of the transport block size TBS corresponding to the data processing capability of the first communication device.
  • the determined TBS value can be matched with the data processing capability of the first communication device. In this way, it is possible to avoid the situation that the data processing capability of the first communication device cannot meet the actual demand due to the length of the time-domain resources scheduled for a single time being greater than 14, which improves the applicability of communication technologies such as 5G.
  • the first communication device receives the scheduling information from the second communication device.
  • the time difference T is the time reserved by the second communication device for the first communication device to process the transmission data.
  • the time difference T is determined by the second communication device in combination with multiple parameters, and the multiple parameters include a relatively important parameter, that is, the preparation time N2.
  • the preparation time refers to the time required for the first communication device to determine, after receiving the scheduling information from the second communication device, the resources for data transmission, the size of the transmission block and other processing processes corresponding to the scheduling, such as channel coding, rate matching, etc.
  • the preparation time is related to the processing capability of the first communication device, and the preparation time must be less than or equal to the time difference T, that is, the data transmission can be started only after the data transmission is ready.
  • the preparation time N2 is related to the data processing capability of the first communication device, and corresponds to N2 time domain symbols.
  • the current NR standard defines the value of the preparation time N2 under various data processing capabilities. For example, see Table 1-7. Table 1-7 is a set of values of the first preparation time N2 provided by the embodiment of the present application. As shown in Table 1-7, under the first data processing capability, different values of the preparation time N2 corresponding to the subcarrier interval ⁇ of different values.
  • Table 1-8 is a value set of the second preparation time N2 provided by the embodiment of the present application. As shown in Table 1-8, under the second data processing capability, different values of the subcarrier interval ⁇ will also correspond to different values of the preparation time N2.
  • the value of the preparation time N2 corresponding to the value of the same subcarrier interval ⁇ is different. For example, when the value of the subcarrier interval ⁇ is 0, under the first data processing capability, the value of the preparation time N2 is 10, and under the second data processing capability, the value of the preparation time N2 is 5.
  • the value of the time unit N2 in the above Table 1-7 or Table 1-8 is suitable for the scenario where the length of the time domain resources of a single scheduling is less than or equal to 14, in the time domain of a single scheduling In a scenario where the length of the resource is greater than 14, the value of TBS will also become larger, which results in more processing time required by the first communication device, that is, the value of the above-mentioned time difference T needs to be larger. Obviously, in a scenario where the length of the time domain resources scheduled for a single time is greater than 14, the value of the preparation time N2 specified in the existing NR standard is still used, which may cause the value of the time difference T determined by the second communication device to be too small.
  • the technical problem to be solved in this embodiment is: how to determine a reasonable value of the preparation time N2, so as to ensure that the value of the time difference T can be reasonable, thereby ensuring that the first communication device can have enough time to complete the transmission data. deal with.
  • FIG. 11 is another schematic flowchart of a communication method provided by the present application.
  • the scheduling process of a certain data transmission between the second communication device and the first communication device will be taken as an example.
  • the communication method includes the steps:
  • the second communication device acquires the length of the third time domain resource.
  • the second communication device may obtain the number of time domain symbols included in the third time domain resource, and further The length of the above-mentioned third time domain resource (here, it is assumed to be L4) is determined.
  • the second communication device determines a target value of the preparation time N2 according to the length of the third time domain resource.
  • the second communication device may further combine the above-mentioned length L4, the data processing capability of the first communication device, and the data transmission method used in this scheduled data transmission.
  • the value of the preparation time N2 is determined by the subcarrier interval (for the convenience of distinction, the description will be replaced by the target subcarrier interval below).
  • the second communication device determines that the length L4 is less than or equal to 14
  • the data The target subcarrier interval used for transmission determines the value of the preparation time N2 corresponding to the target subcarrier interval from the above table 1-7, and determines the value as the target value of the preparation time N2.
  • the second communication device determines that the data processing capability of the first communication device is the above-mentioned second data processing capability, it can be determined from the above Table 1-8 according to the target subcarrier interval used for the scheduled data transmission this time.
  • the value of the preparation time N2 corresponding to the target subcarrier interval is obtained, and the value is determined as the target value of the preparation time N2.
  • the target value of the preparation time N2 can be determined according to Table 1-7 is 23, that is, the preparation time N2 is specifically 23 time domain symbols.
  • the second communication device when the second communication device determines that the length L4 is greater than 14, it can further use the data processing capability of the second device and the target subcarrier interval from the above Table 1-7 or Table 1-8.
  • the value of the corresponding preparation time N2 is found in (for convenience of distinction, the description will be replaced by the initial value later), and the specific search process can be found in the description above, and will not be repeated here.
  • the second communication device may obtain the number of time slots occupied by the third time domain resource (here, it is assumed to be S).
  • the second communication device can calculate the product of the initial value of the preparation time N2 and the number of time slots S, and determine the product of the initial value of the preparation time N2 and the number of time slots S as the preparation time N2 target value. For example, assuming that the length L4 is 29 and the data processing capability of the first communication device is the above-mentioned first data processing capability, when the above-mentioned target subcarrier interval is 2, the initial value of the preparation time N2 can be determined according to Table 1-7 If it is 23, the second communication device may determine 69 (ie, 23*3) as the target value of the preparation time N2.
  • the target value of the preparation time N2 is finally determined in combination with the number of time slots occupied by the third time domain resource, which can make the finally determined time difference T more reasonable and reliable.
  • the second communication device determines that the length L4 is greater than 14
  • the second communication device determines that the data processing capability of the first communication device is the first data processing capability
  • the second communication device The communication device can determine the value of the preparation time N2 corresponding to the target subcarrier interval from the preset third preparation time N2 value set according to the target subcarrier interval used for the scheduled data transmission, and This value is determined as the target value of the preparation time N2.
  • Table 1-9 is a value set of the third preparation time N2 provided by the embodiment of the present application.
  • the values of the subcarrier interval ⁇ are respectively 0, 1, 2, and 3, and the corresponding values of the preparation time N2 are respectively t1, t2, t3 and t4.
  • the value set of the third preparation time N2 can be specifically obtained by extending the value set of the first preparation time N2.
  • the values of preparation time N2 corresponding to each value of the subcarrier interval ⁇ in the value set of the first preparation time N2 can be multiplied by the preparation time adjustment coefficient p, and then the third preparation time N2 can be obtained by extension.
  • the setup time adjustment coefficient p is larger than 1.
  • t1, t2, t3 and t4 can also adopt other values, as long as it is ensured that t1 is greater than 10, t2 is greater than 12, t3 is greater than 23, and t4 is greater than 36.
  • the target value of the preparation time N2 can be determined according to Table 1-9 That is t3.
  • the second communication device may change from the preset target subcarrier interval according to the target subcarrier interval used for the scheduled data transmission this time.
  • the value of the preparation time N2 corresponding to the target subcarrier interval is determined from the fourth set of values of the preparation time N2, and the value is determined as the target value of the preparation time N2.
  • Table 1-10 is a set of values for the fourth preparation time N2 provided by the embodiment of the present application.
  • the values of the subcarrier interval ⁇ are 0, 1, and 2, respectively, and the values of the corresponding preparation time N2 are t5, t6, and t7, respectively.
  • the value set of the fourth preparation time N2 can also be obtained by extending the value set of the second preparation time N2.
  • the value of the preparation time N2 corresponding to each value of the subcarrier interval ⁇ in the value set of the second type of preparation time N2 can be multiplied by the preparation time adjustment coefficient p, and then extended to obtain the fourth type of preparation time N2.
  • the second communication device may determine to obtain a larger value of the preparation time N2, which may include determining based on the preparation time N2
  • the time difference T can be within a reasonable range, so that the subsequent first communication device can have enough time to complete the processing of the transmission data, thereby improving the applicability of communication technologies such as 5G.
  • FIG. 12 is a schematic structural diagram of a device provided by an embodiment of the present application.
  • the apparatus may be used to perform the function of the first communication device in the first embodiment, the second embodiment, the third embodiment or the fourth embodiment.
  • the apparatus may be the first communication device itself, or may be an element or module inside the first communication device.
  • FIG. 9 only the main components of the device are shown in FIG. 9 .
  • the device includes a processor, a memory, a radio frequency circuit, an antenna, and an input and output device.
  • the processor is mainly used to process the communication protocol and communication data, control the device, execute the software program, process the data of the software program, and the like.
  • the memory is mainly used to store software programs and data.
  • the radio frequency circuit is mainly used for the conversion of the baseband signal and the radio frequency signal and the processing of the radio frequency signal.
  • Antennas are mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as a touch screen, a display screen, a keyboard, etc., are mainly used for receiving data input by a user using the device and outputting data to the user. It should be noted that, in some scenarios, the communication device may not include an input and output device.
  • the processor When data needs to be sent, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal through the antenna in the form of electromagnetic waves.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, which converts the baseband signal into data and processes the data.
  • FIG. 9 only one memory and processor are shown in FIG. 9 . In an actual device product, there may be one or more processors and one or more memories.
  • the memory may also be referred to as a storage medium or a storage device or the like.
  • the memory may be set independently of the processor, or may be integrated with the processor, which is not limited in this embodiment of the present application.
  • the processor may include a baseband processor and/or a central processing unit.
  • the baseband processor is mainly used to process communication protocols and communication data
  • the central processing unit is mainly used to control the entire device.
  • the software program is executed, and the data of the software program is processed.
  • the processor in FIG. 9 may integrate the functions of the baseband processor and the central processing unit.
  • the baseband processor and the central processing unit may also be independent processors, interconnected by technologies such as a bus.
  • the device may include multiple baseband processors to adapt to different network standards, the device may include multiple central processors to enhance its processing capability, and various components of the device may be connected through various buses.
  • the above baseband processor may also be expressed as a baseband processing circuit or a baseband processing chip.
  • the above-mentioned central processing unit may also be expressed as a central processing circuit or a central processing chip.
  • the function of processing the communication protocol and communication data may be built in the processor, or may be stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.
  • the antenna and the radio frequency circuit with a transceiver function may be regarded as a transceiver unit of the device, and the processor with a processing function may be regarded as a processing unit of the device.
  • the device includes a transceiver unit 910 and a processing unit 920.
  • the device for implementing the receiving function in the transceiver unit 910 may be regarded as a receiving unit
  • the device for implementing the sending function in the transceiver unit 910 may be regarded as a transmitting unit, that is, the transceiver unit 910 includes a receiving unit and a transmitting unit.
  • the receiving unit may also be sometimes referred to as a receiver, a receiver, or a receiving circuit or the like.
  • the transmitting unit may also sometimes be referred to as a transmitter, a transmitter, or a transmitting circuit, or the like.
  • the processing unit 920 is configured to determine the first time domain resource.
  • the first time domain resource includes at least two consecutive sub-time domain resources, the at least two sub-time domain resources are time domain resources in at least two adjacent first time units, and the at least two sub-time domain resources are The domain resources are in one-to-one correspondence with the at least two adjacent first time units, the sum of the lengths of the at least two sub-time domain resources is equal to the length of the first time domain resources, and the length of the time domain resources is the time domain resource The number of second time units included in .
  • the processing unit 920 is further configured to, if it is determined that the length of the first sub-time domain resource in the at least two sub-time domain resources is equal to or greater than the first length threshold, or, determine the first sub-time domain resource in the at least two sub-time domain resources. If the transmission code rate corresponding to the sub-time domain resource is smaller than the preset transmission code rate, it is determined that a demodulation reference signal DMRS is configured on the first sub-time domain resource.
  • the above-mentioned processing unit 920 and the transceiver unit 910 may also execute the methods in the following examples.
  • the processing unit 920 is further configured to, if it is determined that the length of the second sub-time domain resource in the at least two sub-time domain resources is smaller than the first length threshold, or, to determine the at least two sub-time domain resources
  • the transmission code rate corresponding to the second sub-time domain resource in the sub-time domain resources is equal to or higher than the preset transmission code rate, and the determined second sub-time domain resource is not configured with DMRS.
  • the transceiver unit 910 is configured to perform signal transmission through the second sub-time domain resource.
  • the signal transmission performed by the transceiver unit 910 through the second sub-time domain resource and the signal transmission performed through the first sub-time domain resource satisfy at least one of the following: the transmit power is the same, the precoding is the same, The transmit ports are the same.
  • the processing unit 920 is further configured to determine the channel estimation result corresponding to the first sub-time domain resource as the channel estimation result when the signal is received through the second sub-time domain resource.
  • the first length threshold is determined by the length of the first time domain resource.
  • the processing unit 920 is further configured to acquire the start and duration length indication parameters and the upper limit of the target length corresponding to the first time domain resource.
  • the upper limit of the target length is the maximum allowable number of second time units included in the first time domain resource, and the upper limit of the target length is greater than 14.
  • the length and the starting position of the first time domain resource are determined according to the upper limit of the target length and the starting and continuing length indication parameters.
  • the transceiving unit 910 may be configured to receive the first upper length limit indication parameter from the second communication device.
  • the processing unit 920 is configured to determine a target upper limit adjustment coefficient according to the first length upper limit indication parameter.
  • the processing unit 920 is further configured to determine the upper limit of the target length according to the target upper limit adjustment coefficient and the upper limit of the basic number of first time units corresponding to the first time domain resource. Wherein, the upper limit of the basic number is 14.
  • the processing unit 920 is further configured to determine a target upper limit adjustment coefficient corresponding to the first length upper limit indication parameter from a preset upper limit adjustment coefficient set according to the first length upper limit indication parameter.
  • the upper limit adjustment coefficient set includes one or more upper limit adjustment coefficients corresponding to different length upper limit indication parameters.
  • processing unit 920 is further configured to determine the value of the first length upper limit indication parameter as the target upper limit adjustment coefficient.
  • the transceiving unit 910 is configured to receive the second upper length limit indication parameter from the second communication device.
  • the processing unit 920 is configured to determine the target length upper limit corresponding to the second length upper limit indication parameter from a preset or configured length upper limit set according to the second length upper limit indication parameter.
  • the transceiving unit 910 is configured to receive the second upper length limit indication parameter from the second communication device.
  • the processing unit 920 is configured to determine the value of the second length indication parameter as the upper limit of the target length.
  • the processing unit 920 is further configured to obtain the target index value. Then, according to the target index value, the target length and target start position corresponding to the target index value are determined from the preset time domain resource indication set.
  • the time domain resource indication set includes one or more different index values and the corresponding length and starting position of each index value, and the one or more index values include at least one index with a corresponding length greater than 14 value.
  • the target length and target start position information corresponding to the target index value are determined as the length and start position of the first time domain resource.
  • the processing unit 920 is configured to determine the length and the first number of the first time domain resource.
  • the first time domain resource includes at least two consecutive sub-time domain resources, the at least two sub-time domain resources are time domain resources in at least two adjacent first time units, and the at least two sub-time domain resources are The domain resources are in one-to-one correspondence with the at least two adjacent first time units, the sum of the lengths of the at least two sub-time domain resources is equal to the length of the first time domain resources, and the length of the time domain resources is the length of the time domain resources.
  • the number of second time units to include.
  • the first number is the maximum allowable number of first DMRSs configured on the first time domain resource.
  • the processing unit 920 is further configured to determine the time domain resource of the demodulation reference signal DMRS on the first time domain resource according to the length of the first time domain resource and the first number pair.
  • the above-mentioned processing unit 920 and the transceiver unit 910 may also execute the methods in the following examples.
  • the first number is greater than three.
  • the transceiver unit 920 is configured to, when the processing unit determines that any sub-time domain resource in the at least two sub-time domain resources is not configured with a DMRS, perform the transmission through the any sub-time domain resource.
  • Signal transmission and signal transmission through sub-time domain resources configured with DMRS satisfy at least one of the following: the same transmit power, the same precoding, and the same transmit port.
  • the processing unit 920 is further configured to, if it is determined that no DMRS is configured on any sub-time resource in the at least two sub-time resources, configure the channel corresponding to the sub-time resource configured with the DMRS The estimation result is used to demodulate the signal received at any of the sub-time domain resources.
  • the processing unit 920 is further configured to acquire the start and duration length indication parameters and the upper limit of the target length corresponding to the first time domain resource.
  • the upper limit of the target length is the maximum allowable number of second time units included in the first time domain resource, and the upper limit of the target length is greater than 14.
  • the length and the starting position of the first time domain resource are determined according to the upper limit of the target length and the starting and continuing length indication parameters.
  • the transceiving unit 910 may be configured to receive the first upper length limit indication parameter from the second communication device.
  • the processing unit 920 is configured to determine a target upper limit adjustment coefficient according to the first length upper limit indication parameter.
  • the processing unit 920 is further configured to determine the upper limit of the target length according to the target upper limit adjustment coefficient and the upper limit of the basic number of first time units corresponding to the first time domain resource. Wherein, the upper limit of the basic number is 14.
  • the processing unit 920 is further configured to determine a target upper limit adjustment coefficient corresponding to the first length upper limit indication parameter from a preset upper limit adjustment coefficient set according to the first length upper limit indication parameter.
  • the upper limit adjustment coefficient set includes one or more upper limit adjustment coefficients corresponding to different length upper limit indication parameters.
  • processing unit 920 is further configured to determine the value of the first length upper limit indication parameter as the target upper limit adjustment coefficient.
  • the transceiving unit 910 is configured to receive the second upper length limit indication parameter from the second communication device.
  • the processing unit 920 is configured to determine the target length upper limit corresponding to the second length upper limit indication parameter from a preset or configured length upper limit set according to the second length upper limit indication parameter.
  • the transceiving unit 910 is configured to receive the second upper length limit indication parameter from the second communication device.
  • the processing unit 920 is configured to determine the value of the second length indication parameter as the upper limit of the target length.
  • the processing unit 920 is further configured to obtain the target index value. Then, according to the target index value, the target length and target start position corresponding to the target index value are determined from the preset time domain resource indication set.
  • the time domain resource indication set includes one or more different index values and the corresponding length and starting position of each index value, and the one or more index values include at least one index with a corresponding length greater than 14 value.
  • the target length and target start position information corresponding to the target index value are determined as the length and start position of the first time domain resource.
  • the first time unit is a time slot
  • the second time unit is a time domain symbol
  • FIG. 13 is another schematic structural diagram of an apparatus provided by an embodiment of the present application.
  • the communication apparatus can be applied to the communication system as shown in FIG. 1 to perform the function of the second communication device in the above-mentioned first embodiment, second embodiment, third embodiment or fourth embodiment.
  • the apparatus may be the second communication device itself, or may be a component or module inside the second communication device.
  • the apparatus may include one or more transceiver units 1010 and one or more processing units 1020 .
  • the above-mentioned transceiver unit 1010 may be referred to as a transceiver, a transceiver circuit, or a transceiver, etc., which may include at least one antenna and a radio frequency unit.
  • the above-mentioned part of the transceiver unit 1010 is mainly used for transmitting and receiving radio frequency signals and converting radio frequency signals to baseband signals, for example, for sending the indication information in the above embodiments to the terminal device.
  • the above-mentioned part of the processing unit 1020 is mainly used to perform baseband processing, control the device, and the like.
  • the above-mentioned transceiver unit 1010 and the processing unit 1020 may be physically set together, or may be physically separated, that is, a distributed device.
  • the above-mentioned processing unit 1020 may be used to control the apparatus to perform the process of determining the indication information in the above-mentioned first embodiment.
  • the above-mentioned processing unit 1020 may be composed of one or more boards, and the multiple boards may jointly support a wireless access network (such as an NR network) with a single access indication, or may respectively support a wireless access network with different access standards. wireless access network.
  • the above-mentioned processing unit 1020 further includes a memory and a processor, and the above-mentioned memory is used for storing necessary instructions and data.
  • the above-mentioned processor is used to control the apparatus to perform necessary actions, for example, to control the apparatus to execute the operation flow of the apparatus in the above-mentioned method embodiments.
  • the memory and processor described above may serve one or more single boards. That is to say, the memory and processor can be provided separately on each single board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits may also be provided on each single board.
  • the processor may include a baseband processor and/or a central processing unit.
  • the baseband processor is mainly used to process communication protocols and communication data
  • the central processing unit is mainly used to control the entire device.
  • the software program is executed, and the data of the software program is processed.
  • the processor in FIG. 13 may integrate the functions of the baseband processor and the central processing unit.
  • the baseband processor and the central processing unit may also be independent processors, interconnected by technologies such as a bus.
  • the device may include multiple baseband processors to adapt to different network standards, the device may include multiple central processors to enhance its processing capability, and various components of the device may be connected through various buses.
  • the above baseband processor may also be expressed as a baseband processing circuit or a baseband processing chip.
  • the above-mentioned central processing unit may also be expressed as a central processing circuit or a central processing chip.
  • the function of processing the communication protocol and communication data can be built in the processor, or stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.
  • the processing unit 1020 is configured to determine the start and duration length indication parameters and the target length upper limit corresponding to the first time domain resource, wherein the start and duration length indication parameters and the target length upper limit are used for Indicates the length of the first time domain resource and the target start symbol parameter, the resource length of the time domain resource is the number of second time units included in the time domain resource, and the length of the first time domain resource is greater than 14 .
  • the transceiver unit 1010 is configured to send the start and duration length indication parameters and the upper limit of the target length to the first communication device.
  • processing unit 1020 and the transceiver unit 1010 can also be used to execute the methods in the following examples.
  • the processing unit 1020 determines a first upper length limit indication parameter corresponding to the target upper limit adjustment coefficient from a preset upper limit adjustment coefficient set.
  • the upper limit adjustment coefficient set includes length upper limit indication parameters corresponding to one or more different upper limit adjustment coefficients.
  • the processing unit 1020 determines the value of the target upper limit adjustment coefficient as the first length upper limit indication parameter.
  • the processing unit 1020 determines a second upper length limit indication parameter corresponding to the target length upper limit from a preset length upper limit set.
  • the length upper limit set includes one or more length upper limit indication parameters corresponding to different length upper limits.
  • the transceiver unit 1010 sends the second length upper limit indication parameter to the first communication device.
  • the processing unit 1020 determines the value of the upper limit of the target length as the second upper length limit indication parameter.
  • the transceiver unit 1010 sends the second length upper limit indication parameter to the first communication device.
  • the processing unit 1020 determines, according to the length and starting position of the first time domain resource, from a preset time domain resource indication set, the corresponding length of the first time domain resource and the starting position. target index value.
  • the time domain resource indication set includes one or more index values and the corresponding length and starting position of each index value, and the length of the time domain resource is the number of second time units included in the time domain resource.
  • the length of the first time domain resource is greater than 14.
  • the transceiver unit 1010 sends the target index value to the first communication device, where the target index value is used by the first communication device to determine the length and start position of the first time domain resource.
  • FIG. 14 is another schematic structural diagram of an apparatus provided by an embodiment of the present application.
  • the apparatus may be the first communication device in Embodiment 1, and may be used to implement the communication method described in Embodiment 1 above.
  • the apparatus includes: a processor 111 , a memory 112 , and a transceiver 113 .
  • the memory 112 includes, but is not limited to, RAM, ROM, EPROM or CD-ROM, and the memory 112 is used to store related instructions and data.
  • the memory 112 stores the following elements, executable modules or data structures, or a subset thereof, or an extended set thereof:
  • Operation instructions including various operation instructions, which are used to realize various operations.
  • Operating System Includes various system programs for implementing various basic services and handling hardware-based tasks.
  • the transceiver 113 may be a communication module, a transceiver circuit. Application In this embodiment of the present application, the transceiver 113 is configured to perform the process of sending and receiving data or signals performed by the first communication device in the first embodiment.
  • the processor 111 may be a controller, CPU, general purpose processor, DSP, ASIC, FPGA or other programmable logic device, transistor logic device, hardware component or any combination thereof. It may implement or execute various exemplary logical blocks, modules and circuits described in connection with the disclosure of the embodiments of this application.
  • the processor 111 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.
  • various components of the device are coupled to each other.
  • the processor in this embodiment of the present application may be an integrated circuit chip, which has a signal processing capability.
  • each step of the above method embodiments may be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software.
  • the above-mentioned processor can be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (field programmable gate array, FPGA) or other Programming logic devices, discrete gate or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • Programming logic devices discrete gate or transistor logic devices, discrete hardware components.
  • the memory in this embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically programmable Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • Volatile memory may be random access memory (RAM), which acts as an external cache.
  • RAM random access memory
  • DRAM dynamic random access memory
  • SDRAM synchronous DRAM
  • SDRAM double data rate synchronous dynamic random access memory
  • ESDRAM enhanced synchronous dynamic random access memory
  • SLDRAM synchronous link dynamic random access memory
  • direct rambus RAM direct rambus RAM
  • Embodiments of the present application further provide a computer-readable medium on which a computer program is stored, and when the computer program is executed by a computer, implements the methods or steps performed by the first communication device in the above-mentioned first embodiment.
  • An embodiment of the present application further provides a computer program product, which implements the method or step performed by the first communication device in the first embodiment above when the computer program product is executed by a computer.
  • An embodiment of the present application further provides an apparatus, and the apparatus may be the first communication device in Embodiment 1.
  • the apparatus includes a processor and an interface.
  • the processor is configured to execute the method or step executed by the first communication device in the first embodiment.
  • the above-mentioned apparatus may be a chip, and the above-mentioned processor may be implemented by hardware or software.
  • the processor When implemented by hardware, the processor may be a logic circuit, an integrated circuit, or the like.
  • the processor can be a general-purpose processor, which can be implemented by reading software codes stored in the memory, and the memory can be integrated in the processor, and can be located outside the processor and exist independently.
  • FIG. 15 is another schematic structural diagram of an apparatus provided by an embodiment of the present application.
  • the apparatus may be the second communication device in the first embodiment, and may be used to implement the steps of the communication method performed by the second communication device in the above-mentioned first embodiment.
  • the apparatus includes: a processor 121 , a memory 122 , and a transceiver 123 .
  • the memory 122 includes, but is not limited to, RAM, ROM, EPROM, or CD-ROM, and the memory 122 is used to store related instructions and data.
  • Memory 122 stores the following elements, executable modules or data structures, or a subset thereof, or an extended set thereof:
  • Operation instructions including various operation instructions, which are used to realize various operations.
  • Operating System Includes various system programs for implementing various basic services and handling hardware-based tasks.
  • the transceiver 123 may be a communication module, a transceiver circuit. Application In this embodiment of the present application, the transceiver 123 is configured to perform the signal or data sending and receiving process performed by the second communication device in the first embodiment.
  • the processor 121 may be a controller, CPU, general purpose processor, DSP, ASIC, FPGA or other programmable logic device, transistor logic device, hardware component or any combination thereof. It may implement or execute various exemplary logical blocks, modules and circuits described in connection with the disclosure of the embodiments of this application.
  • the processor 121 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.
  • the various components of the device are coupled together.
  • the processor in this embodiment of the present application may be an integrated circuit chip, which has a signal processing capability.
  • each step of the above method embodiments may be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software.
  • the above-mentioned processor can be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (field programmable gate array, FPGA) or other Programming logic devices, discrete gate or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • Programming logic devices discrete gate or transistor logic devices, discrete hardware components.
  • the memory in this embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically programmable Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • Volatile memory may be random access memory (RAM), which acts as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • SDRAM synchronous DRAM
  • SDRAM double data rate synchronous dynamic random access memory
  • double data rate SDRAM double data rate SDRAM
  • DDR SDRAM enhanced synchronous dynamic random access memory
  • ESDRAM enhanced synchronous dynamic random access memory
  • SCRAM synchronous link dynamic random access memory
  • direct rambus RAM direct rambus RAM
  • Embodiments of the present application further provide a computer-readable medium on which a computer program is stored, and when the computer program is executed by a computer, implements the method or steps performed by the second communication device in the above-mentioned first embodiment.
  • An embodiment of the present application further provides a computer program product, which implements the method or steps performed by the second communication device in the first embodiment above when the computer program product is executed by a computer.
  • An embodiment of the present application further provides an apparatus, and the apparatus may be the second communication device in Embodiment 1.
  • the apparatus includes a processor and an interface.
  • the processor is configured to execute the method or step executed by the second communication device in the first embodiment.
  • the above-mentioned apparatus may be a chip, and the above-mentioned processor may be implemented by hardware or software.
  • the processor When implemented by hardware, the processor may be a logic circuit, an integrated circuit, or the like.
  • the processor can be a general-purpose processor, which is implemented by reading the software codes stored in the memory, and the memory can be integrated in the processor, and can be located outside the above-mentioned processor and exist independently.
  • the foregoing method embodiments may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software When implemented in software, it can be implemented in whole or in part in the form of a computer program product.
  • the computer program product described above includes one or more computer instructions. When the above-mentioned computer instructions are loaded and executed on the computer, all or part of the above-mentioned processes or functions according to the embodiments of the present application are generated.
  • the aforementioned computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the above-mentioned computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the above-mentioned computer instructions may be transmitted from a website site, computer, server or data center via wired communication. (e.g. coaxial cable, fiber optic, digital subscriber Line (DSL) or wireless (e.g. infrared, wireless, microwave, etc.) to another website site, computer, server or data center.
  • the above computer readable storage The medium can be any available medium that can be accessed by a computer or a data storage device that contains one or more of the available media integration servers, data centers, etc.
  • the aforementioned available media can be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (For example, a high-density digital video disc (DVD), or a semiconductor medium (for example, a solid state disk (SSD), etc.).
  • magnetic media eg, floppy disks, hard disks, magnetic tapes
  • optical media For example, a high-density digital video disc (DVD), or a semiconductor medium (for example, a solid state disk (SSD), etc.
  • SSD solid state disk
  • system and “network” in the embodiments of the present application can often be used interchangeably.
  • the term “and/or” in this embodiment is only an association relationship to describe associated objects, indicating that there can be three kinds of relationships, for example, A and/or B, it can mean that A exists alone, A and B exist at the same time, There are three cases of B alone.
  • the character "/" in this document generally indicates that the related objects are an "or” relationship.
  • the disclosed systems, devices and methods may be implemented in other manners.
  • the apparatus described above is only illustrative.
  • the division of units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or integrated into another A system, or some feature, can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may also be electrical, mechanical or other forms of connection.
  • each functional unit in the embodiments of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.

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Abstract

Selon des modes de réalisation, la présente demande concerne un procédé et un appareil de communication. Le procédé comprend les étapes suivantes : un premier dispositif de communication détermine une première ressource du domaine temporel, la première ressource du domaine temporel comprenant au moins deux sous-ressources du domaine temporel consécutives, et lesdites au moins deux sous-ressources du domaine temporel étant des ressources du domaine temporel figurant dans au moins deux premières unités de temps adjacentes et étant en correspondance biunivoque avec lesdites au moins deux premières unités de temps adjacentes ; et si le premier dispositif de communication détermine que la longueur d'une première sous-ressource du domaine temporel desdites au moins deux sous-ressources du domaine temporel est égale ou supérieure à un premier seuil de longueur, ou détermine qu'un débit binaire de transmission correspondant à la première sous-ressource du domaine temporel desdites au moins deux sous-ressources du domaine temporel est inférieur à un débit binaire de transmission prédéfini, le premier dispositif de communication détermine alors qu'un signal de référence de démodulation (DMRS) est configuré sur la première sous-ressource du domaine temporel. Le procédé décrit dans la présente demande peut résoudre le problème de configuration de ressources DMRS pour une ressource du domaine temporel constituée de plus de 14 symboles.
PCT/CN2021/072220 2020-10-16 2021-01-15 Procédé et appareil de communication WO2022077792A1 (fr)

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