WO2022068177A1 - Procédé et appareil de communication pour la planification de ressources - Google Patents

Procédé et appareil de communication pour la planification de ressources Download PDF

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Publication number
WO2022068177A1
WO2022068177A1 PCT/CN2021/087913 CN2021087913W WO2022068177A1 WO 2022068177 A1 WO2022068177 A1 WO 2022068177A1 CN 2021087913 W CN2021087913 W CN 2021087913W WO 2022068177 A1 WO2022068177 A1 WO 2022068177A1
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Prior art keywords
dmrs
time slot
slot group
subcarrier
dci
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PCT/CN2021/087913
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English (en)
Chinese (zh)
Inventor
马千里
刘凤威
高宽栋
袁世通
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华为技术有限公司
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Publication of WO2022068177A1 publication Critical patent/WO2022068177A1/fr

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    • 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 communication technologies, and in particular, to a communication method and apparatus for resource scheduling.
  • the subcarrier spacing may be 960 kHz.
  • SCS subcarrier spacing
  • the resource indication method of “spectrum below 40GHz” is still used, and the "preparation time for switching between sending and receiving is longer than a certain time (such as 14 microseconds)"
  • a time-division repeat With a (time-division duplex, TDD) transmission period of 5 time slots (slots), about 14 symbols (symbols) in the 5 time slots are guard interval symbols, and the switching overhead is large.
  • TDD time-division duplex
  • SCS downlink control information
  • other SCSs such as 120kHz
  • one TDD transmission period of the reference SCS is 5 time slots
  • every 5 time slots of the reference SCS corresponds to 40 time slots of 960 kHz.
  • K0 and K2 in the downlink control information (DCI) are both less than or equal to 32, starting with the time slot for transmitting DCI, if the physical downlink is transmitted in the time slot after 32 time slots Shared channel (physical downlink shared channel, PDSCH), the DCI cannot indicate the time slot position of the PDSCH.
  • DCI downlink control information
  • the DCI indicates the time slot position for transmitting the physical uplink shared channel (PUSCH) based on K2. Starting from the time slot for transmitting DCI, if the PUSCH is transmitted in the time slot after 32 time slots, the DCI cannot indicate the time slot position of the PUSCH, thus reducing the flexibility of resource scheduling.
  • PUSCH physical uplink shared channel
  • Embodiments of the present application provide a communication method and apparatus for resource scheduling, which can improve resource scheduling flexibility.
  • an embodiment of the present application provides a communication method for resource scheduling, where the execution subject of the method may be a terminal device or a chip applied in the terminal device.
  • the following description takes the execution subject being a terminal device as an example.
  • the method includes: a terminal device receives configuration information from a network device, wherein the configuration information configures a time slot group for the terminal device, the time slot group includes at least two time slots, and the number of time slots in a time slot group is determined according to the target subgroup.
  • the carrier spacing is determined, and the target subcarrier spacing is the spacing of the subcarriers configured by the terminal device.
  • the terminal device receives downlink control information DCI from the network device, wherein the DCI indicates the time domain resources used for data transmission in the time slot group. Then, the terminal device performs data transmission with the network device based on the time domain resources indicated by the DCI.
  • the DCI sent by the network device to the terminal device can indicate the time domain resources used for data transmission in the time slot group, so as to realize resource scheduling based on the time slot group.
  • resource scheduling can be implemented in units of time slot groups, which also enables DCI to indicate more time slot resources , which improves the efficiency and flexibility of resource scheduling compared to resource scheduling based on time slots.
  • the DCI includes first information, and the first information indicates a first time slot group in the time slot group, and the first time slot group includes time domain resources for transmitting the physical downlink shared channel PDSCH. That is, the network device can schedule time domain resources in a certain time slot group to transmit PDSCH based on DCI.
  • the first information includes a first parameter
  • the first parameter indicates the number of time slot groups that are spaced between the time slot group where the DCI is located and the first time slot group.
  • the first parameter indicates the value of K0.
  • the DCI further includes second information
  • the second information indicates a second time slot group in the time slot group
  • the second time slot group includes time domain resources for transmitting HARQ information of HARQ
  • the HARQ information indicates the reception status of the PDSCH. That is, the network device can schedule time domain resources in a certain time slot group to transmit HARQ information based on DCI.
  • the second information includes a second parameter indicating the number of time slot groups by which the first time slot group is spaced from the second time slot group.
  • the second parameter indicates the value of K1.
  • the DCI further includes third information, wherein the third information is used to determine the first value, and the first value is used to determine the position of the start symbol of the at least one symbol in the time slot and/or at least The number of symbols for a symbol.
  • the communication method for resource scheduling in the embodiment of the present application further includes: the terminal device receives a third parameter from the network device, where the third parameter is used to adjust the first value. The terminal device determines at least one of the following according to the first value and the third parameter: the position of the start symbol of at least one symbol used for transmitting the PDSCH in the first slot group in the first slot group; in the first slot group The number of symbols used to transmit at least one symbol of PDSCH.
  • the network device can also schedule at least one symbol in a certain time slot group based on the DCI to transmit the PDSCH.
  • the DCI includes fourth information, where the fourth information indicates a third time slot group in the time slot group, and the third time slot group includes time domain resources for transmitting the physical uplink shared channel PUSCH. That is, the network device can schedule time domain resources in a certain time slot group to transmit PUSCH based on DCI.
  • the fourth information includes a fourth parameter
  • the fourth parameter indicates the number of time slot groups that are spaced between the time slot group where the DCI is located and the third time slot group.
  • the fourth parameter indicates the value of K2.
  • the DCI further includes fifth information, wherein the fifth information is used to determine a second value, and the second value is used to determine the position of the start symbol of the at least one symbol in the time slot and/or at least The number of symbols for a symbol.
  • the communication method for resource scheduling in the embodiment of the present application further includes: the terminal device receives a fifth parameter from the network device, where the fifth parameter is used to adjust the second value. The terminal device determines at least one of the following according to the second value and the fifth parameter: the position of the start symbol of at least one symbol used to transmit the PUSCH in the third slot group in the third slot group; The number of symbols used to transmit at least one symbol of the PUSCH.
  • the network device can also schedule at least one symbol in a certain time slot group to transmit the PUSCH based on the DCI.
  • the number of time slots in a time slot group is determined according to the target subcarrier spacing and the preset subcarrier spacing.
  • the number of time slots in a time slot group is the ratio between the target subcarrier spacing and the preset subcarrier spacing.
  • the target subcarrier spacing includes one of the following: 240K, 480K, 960K, or 1920K.
  • an embodiment of the present application provides a communication method for resource scheduling, where the execution subject of the method may be a network device or a chip applied in the network device.
  • the following description takes the execution subject being a network device as an example.
  • the method includes: a network device sends configuration information to a terminal device, wherein the configuration information configures a time slot group for the terminal device, the time slot group includes at least two time slots, and the number of time slots in a time slot group is based on the target subcarrier The interval is determined, and the target subcarrier interval is the interval of the subcarriers configured by the terminal device.
  • the network device sends downlink control information DCI to the terminal device, wherein the DCI indicates the time domain resources used for data transmission in the time slot group. Then, the network device performs data transmission with the terminal device based on the time domain resources indicated by the DCI.
  • the DCI includes first information, and the first information indicates a first time slot group in the time slot group, and the first time slot group includes time domain resources for transmitting the physical downlink shared channel PDSCH.
  • the first information includes a first parameter
  • the first parameter indicates the number of time slot groups that are spaced between the time slot group where the DCI is located and the first time slot group.
  • the DCI further includes second information
  • the second information indicates a second time slot group in the time slot group
  • the second time slot group includes time domain resources for transmitting HARQ information of HARQ
  • the HARQ information indicates the reception status of the PDSCH.
  • the second information includes a second parameter indicating the number of time slot groups by which the first time slot group is spaced from the second time slot group.
  • the DCI further includes third information, wherein the third information is used to determine the first value, and the first value is used to determine the position of the start symbol of the at least one symbol in the time slot and/or at least The number of symbols for a symbol.
  • the communication method for resource scheduling in the embodiment of the present application further includes: the network device sends a third parameter to the terminal device, where the third parameter is used to adjust the first value; the first value and the third parameter are used to determine at least one of the following : the position of the start symbol of the at least one symbol used for transmitting the PDSCH in the first time slot group in the first time slot group; the symbol number of the at least one symbol used for transmitting the PDSCH in the first time slot group.
  • the DCI includes fourth information, where the fourth information indicates a third time slot group in the time slot group, and the third time slot group includes time domain resources for transmitting the physical uplink shared channel PUSCH.
  • the fourth information includes a fourth parameter, and the fourth parameter indicates the number of time slot groups that are spaced between the time slot group where the DCI is located and the third time slot group.
  • the DCI further includes fifth information, wherein the fifth information is used to determine a second value, and the second value is used to determine the position of the start symbol of the at least one symbol in the time slot and/or at least The number of symbols for a symbol.
  • the communication method for resource scheduling in the embodiment of the present application further includes: the network device sends a fifth parameter to the terminal device, where the fifth parameter is used to adjust the second value, and the second value and the fifth parameter are used to determine at least one of the following : the position of the start symbol of the at least one symbol used for transmitting the PUSCH in the third time slot group in the third time slot group; the symbol number of the at least one symbol used for transmitting the PUSCH in the third time slot group.
  • the number of time slots in a time slot group is determined according to the target subcarrier spacing and the preset subcarrier spacing.
  • an embodiment of the present application provides a communication method for resource scheduling, where the execution subject of the method may be a terminal device, or may be a chip applied in the terminal device.
  • the following description takes the execution subject being a terminal device as an example.
  • the method includes: a terminal device receives downlink control information DCI from a network device, wherein the DCI indicates a time domain resource for data transmission.
  • the terminal device receives the first reference signal from the network device, and/or the terminal device sends the first reference signal to the network device.
  • the first reference signal includes at least two demodulation reference signal DMRSs, the at least two DMRSs correspond to the same antenna port, the at least two DMRSs are consecutive in the time domain, and are located in different subcarriers in the frequency domain.
  • the first reference signal is used to demodulate the time domain resource indicated by the DCI.
  • the resource indicated by the DCI is demodulated by using the DMRS in the first reference signal.
  • at least two DMRSs in the first reference signal correspond to the same antenna port.
  • the above "at least two DMRSs" are located in different subcarriers. For example, there are DMRSs corresponding to the same port on the next subcarrier of adjacent symbols, thereby effectively increasing the density of DMRSs in the frequency domain, which is beneficial to Improve the accuracy of linear interpolation operations and the accuracy of channel estimation results, thereby improving the spectral efficiency of transmission.
  • the communication method for resource scheduling in the embodiment of the present application improves the DMRS per unit time signal energy, which is beneficial to improve the decoding speed and the accuracy of channel estimation, and improve the spectral efficiency of transmission.
  • the DCI indicates the time domain resources used for data transmission in the slot group.
  • the timeslot group includes at least two timeslots, and the number of timeslots in one timeslot group is determined according to the target subcarrier spacing, which is the spacing of the subcarriers configured by the terminal device. That is, in the case where the terminal device is configured with the time slot group, the network device can schedule the time domain resources in the time slot group based on the DCI to transmit data.
  • the at least two DMRSs include a first DMRS and a second DMRS.
  • the first DMRS is located at the ith subcarrier
  • the second DMRS is located at the (i+1)th subcarrier.
  • the first DMRS is located at the ith subcarrier and the (i+1)th subcarrier
  • the second DMRS is located at the (i+2)th subcarrier and the (i+3)th subcarrier
  • i is a positive integer. That is, the first DMRS and the second DMRS satisfy the distribution condition of type 2.
  • the at least two DMRSs include a first DMRS and a second DMRS.
  • the first reference signal also includes a third DMRS.
  • the first DMRS and the third DMRS are the same in the time domain, and the second DMRS and the third DMRS correspond to different antenna ports and are located on the same subcarrier in the frequency domain. That is to say, the DMRS in the first reference signal may correspond to different antenna ports, and satisfy the distribution condition of type 1 or the distribution condition of type 2.
  • the antenna port corresponding to the second DMRS and the antenna port corresponding to the third DMRS are determined according to the value of N and the number of symbols carrying the target DMRS.
  • the value of N is the number of antenna ports corresponding to the DMRS on the symbol where the second DMRS is located.
  • the target DMRS is a group of consecutive DMRSs in the time domain in the first reference signal, and the target DMRS includes at least two DMRSs.
  • the DMRS corresponding to different antenna ports have cyclic shifts in the time domain, and the antenna port status corresponding to the adjacent DMRS is determined according to the number of antenna ports and the number of symbols corresponding to the first reference signal, so as to improve the corresponding Density of DMRS for the same antenna port.
  • the number of symbols carrying the target DMRS is the same as the number of slots in the slot group.
  • the number of symbols carrying the target DMRS is different from the number of slots in the slot group.
  • the target DMRS is a group of consecutive DMRSs in the time domain in the first reference signal, and the target DMRS includes at least two DMRSs.
  • the timeslot group includes at least two timeslots, and the number of timeslots in one timeslot group is determined according to the target subcarrier spacing, which is the spacing of the subcarriers configured by the terminal device.
  • the network device does not need to transmit additional instructions to indicate the number of DMRS in the first reference signal for the terminal device, saving signaling overhead.
  • the network device transmits an instruction to the terminal device to indicate the number of DMRSs in the first reference signal for the terminal device. In this way, when the channel condition is good, the number of DMRSs in the first reference signal is reduced, so that more resources are used for data transmission. On the contrary, in the case of poor channel conditions, the number of DMRSs in the first reference signal is increased, so as to improve the channel estimation accuracy.
  • the number of time slots in a time slot group is determined according to the target subcarrier spacing and the preset subcarrier spacing. For example, the number of time slots in a time slot group is the ratio of the target subcarrier spacing to the preset subcarrier spacing.
  • the at least two DMRSs include a first DMRS and a second DMRS, and the time-domain resource units carrying the first DMRS and the second DMRS are different.
  • the subcarrier where the first DMRS is located is the (i+4k)th subcarrier
  • the subcarrier where the second DMRS is located is the (i+4k+2)th subcarrier.
  • i and k are positive integers. That is, at least two DMRSs satisfy a DMRS pattern based on interleaved frequency domain multiplexing (IFDM).
  • IFDM interleaved frequency domain multiplexing
  • the at least two DMRSs include a first DMRS and a second DMRS, and the time-domain resource units carrying the first DMRS and the second DMRS are different.
  • the subcarriers where the first DMRS is located are the (i+12k)th subcarrier and the (i+12k+1)th subcarrier
  • the subcarriers where the second DMRS is located are the (i+12k+6)th subcarrier and the (i+12k+1)th subcarrier. (i+12k+7) subcarriers.
  • i and k are positive integers. That is, at least two DMRSs satisfy a DMRS pattern based on a frequency domain orthogonal covering code (FD-OCC).
  • FD-OCC frequency domain orthogonal covering code
  • the first reference signal further includes a third DMRS and a fourth DMRS.
  • the subcarriers carrying the third DMRS and the first DMRS are the same, but the time domain resource units carrying the third DMRS and the first DMRS are different.
  • the subcarriers that carry the fourth DMRS and the second DMRS are the same, but the time-domain resource units that carry the fourth DMRS and the second DMRS are different.
  • the third DMRS and the fourth DMRS correspond to the same antenna port, and are different from the antenna ports corresponding to the at least two DMRSs.
  • the first DMRS and the third DMRS on the same subcarrier occupy different time-domain resource units, and can be used to transmit DMRSs of different antenna ports, increasing the available antennas number of ports.
  • the second DMRS and the fourth DMRS on the same subcarrier occupy different time domain resource units, and can be used to transmit DMRSs with different antenna ports, increasing the number of available antenna ports.
  • the first reference signal further includes a fifth DMRS and a sixth DMRS.
  • the time domain resource units that carry the fifth DMRS and the first DMRS are the same, but the subcarriers that carry the fifth DMRS and the first DIMRS are different.
  • the time domain resource units that carry the sixth DMRS and the second DMRS are the same, but the subcarriers that carry the sixth DMRS and the second DMRS are different.
  • the fifth DMRS and the sixth DMRS correspond to the same antenna port, and are different from the antenna ports corresponding to the at least two DMRSs.
  • the first DMRS and the fifth DMRS occupy different subcarriers and can be used to transmit DMRSs of different antenna ports.
  • the second DMRS and the sixth DMRS occupy different subcarriers and can be used to transmit DMRSs of different antenna ports.
  • the first reference signal further includes a seventh DMRS and an eighth DMRS.
  • the time-frequency resources of the seventh DMRS and the first DMRS are the same, and the time-frequency resources of the eighth DMRS and the second DMRS are the same.
  • the OCC adopted by the seventh DMRS and the eighth DMRS is different from the OCC adopted by the first DMRS and the second DMRS.
  • the seventh DMRS and the eighth DMRS correspond to the same antenna port, and are different from the antenna ports corresponding to the at least two DMRSs.
  • the REs carrying the first DMRS and the seventh DMRS are the same, and the REs carrying the second DMRS and the eighth DMRS are the same, but the OCC used by the first DMRS and the second DMRS is the same as the OCC used by the seventh DMRS and the eighth DMRS Different, can be used to transmit DMRS for different antenna ports.
  • the first reference signal is transmitted before the resource indicated by the DCI. In this way, the terminal device can quickly obtain the channel estimation result based on the first reference signal to demodulate the resource indicated by the DCI.
  • the communication method for resource scheduling in this embodiment of the present application further includes: the terminal device receives a second reference signal from the network device, and/or the terminal device sends the second reference signal to the network device.
  • the terminal device receives a second reference signal from the network device, and/or the terminal device sends the second reference signal to the network device.
  • at least two DMRSs in the second reference signal correspond to the same antenna port, and at least two DMRSs in the second reference signal are consecutive in the time domain and located in different subcarriers in the frequency domain.
  • the second reference signal is transmitted after the first part of the resources indicated by the DCI and before the second part of the resources indicated by the DCI.
  • the second reference signal is used to demodulate the time domain resource indicated by the DCI.
  • the network device also sends a second reference signal to the terminal device, and the terminal device can also perform channel estimation based on the second reference signal, so as to improve the accuracy of channel estimation .
  • the terminal device receives the first reference signal from the network device. If the DCI indicates a time domain resource for transmitting the physical uplink shared channel PUSCH, the terminal device sends the first reference signal to the network device. That is to say, the first reference signal is suitable for uplink transmission and also suitable for downlink transmission.
  • an embodiment of the present application provides a communication method for resource scheduling, where the execution subject of the method may be a network device or a chip applied in the network device.
  • the following description takes the execution subject being a network device as an example.
  • the method includes: the network device sends downlink control information DCI to the terminal device, wherein the DCI indicates time domain resources used for data transmission.
  • the network device receives the first reference signal from the terminal device, and/or the network device sends the first reference signal to the terminal device; wherein the first reference signal includes at least two demodulation reference signals DMRS; the at least two DMRS correspond to the same antenna port , at least two DMRSs are consecutive in the time domain and located in different subcarriers in the frequency domain; the first reference signal is used to demodulate the time domain resources indicated by the DCI.
  • the first reference signal includes at least two demodulation reference signals DMRS; the at least two DMRS correspond to the same antenna port , at least two DMRSs are consecutive in the time domain and located in different subcarriers in the frequency domain; the first reference signal is used to demodulate the time domain resources indicated by the DCI.
  • the DCI indicates the time domain resources used for data transmission in the time slot group; wherein, the time slot group includes at least two time slots, and the number of time slots in one time slot group is based on the target subcarrier The interval is determined, and the target subcarrier interval is the interval of the subcarriers configured by the terminal device.
  • the at least two DMRSs include a first DMRS and a second DMRS; wherein the first DMRS is located at the ith subcarrier, and the second DMRS is located at the (i+1)th subcarrier; or, the first DMRS The second DMRS is located at the ith subcarrier and the (i+1)th subcarrier, and the second DMRS is located at the (i+2)th subcarrier and the (i+3)th subcarrier; i is a positive integer.
  • the at least two DMRSs include a first DMRS and a second DMRS; the first reference signal further includes a third DMRS; wherein the first DMRS and the third DMRS are the same in the time domain; the second DMRS and The third DMRS corresponds to different antenna ports and is located on the same subcarrier in the frequency domain.
  • the antenna port corresponding to the second DMRS and the antenna port corresponding to the third DMRS are determined according to the value of N and the number of symbols carrying the target DMRS; wherein, the value of N is where the second DMRS is located The number of antenna ports corresponding to the DMRS on the symbol; the target DMRS is a group of consecutive DMRSs in the time domain in the first reference signal, and the target DMRS includes at least two DMRSs.
  • the number of symbols carrying the target DMRS is the same as the number of time slots in the time slot group; or, the number of symbols carrying the target DMRS is different from the number of time slots in the time slot group; wherein, the target DMRS is the first A continuous group of DMRSs in the time domain in the reference signal, the target DMRS includes at least two DMRSs; the time slot group includes at least two time slots, and the number of time slots in a time slot group is determined according to the target subcarrier spacing, The target subcarrier spacing is the spacing of the subcarriers on which the terminal device is configured.
  • the number of time slots in a time slot group is determined according to the target subcarrier spacing and the preset subcarrier spacing.
  • the at least two DMRSs include a first DMRS and a second DMRS, and the time-domain resource units carrying the first DMRS and the second DMRS are different.
  • the subcarrier where the first DMRS is located is the (i+4k)th subcarrier
  • the subcarrier where the second DMRS is located is the (i+4k+2)th subcarrier. i and k are positive integers.
  • the at least two DMRSs include a first DMRS and a second DMRS, and the time-domain resource units carrying the first DMRS and the second DMRS are different.
  • the subcarriers where the first DMRS is located are the (i+12k)th subcarrier and the (i+12k+1)th subcarrier
  • the subcarriers where the second DMRS is located are the (i+12k+6)th subcarrier and the (i+12k+1)th subcarrier. (i+12k+7) subcarriers.
  • i and k are positive integers.
  • the first reference signal further includes a third DMRS and a fourth DMRS.
  • the subcarriers carrying the third DMRS and the first DMRS are the same, but the time domain resource units carrying the third DMRS and the first DMRS are different.
  • the subcarriers that carry the fourth DMRS and the second DMRS are the same, but the time-domain resource units that carry the fourth DMRS and the second DMRS are different.
  • the third DMRS and the fourth DMRS correspond to the same antenna port, and are different from the antenna ports corresponding to the at least two DMRSs.
  • the first reference signal further includes a fifth DMRS and a sixth DMRS.
  • the time domain resource units that carry the fifth DMRS and the first DMRS are the same, but the subcarriers that carry the fifth DMRS and the first DIMRS are different.
  • the time domain resource units that carry the sixth DMRS and the second DMRS are the same, but the subcarriers that carry the sixth DMRS and the second DMRS are different.
  • the fifth DMRS and the sixth DMRS correspond to the same antenna port, and are different from the antenna ports corresponding to the at least two DMRSs.
  • the first reference signal further includes a seventh DMRS and an eighth DMRS.
  • the time-frequency resources of the seventh DMRS and the first DMRS are the same, and the time-frequency resources of the eighth DMRS and the second DMRS are the same.
  • the OCC adopted by the seventh DMRS and the eighth DMRS is different from the OCC adopted by the first DMRS and the second DMRS.
  • the seventh DMRS and the eighth DMRS correspond to the same antenna port, and are different from the antenna ports corresponding to the at least two DMRSs.
  • the first reference signal is transmitted before the resource indicated by the DCI.
  • the communication method for resource scheduling in this embodiment of the present application further includes: the network device receives a second reference signal from the terminal device, and/or the network device sends the second reference signal to the terminal device; wherein, At least two DMRSs in the second reference signal correspond to the same antenna port, and at least two DMRSs in the second reference signal are continuous in the time domain and located in different subcarriers in the frequency domain; It is transmitted after a part of the resources and before the second part of the resources indicated by the DCI; the second reference signal is used to demodulate the time domain resources indicated by the DCI.
  • the network device sends the first reference signal to the terminal device; if the DCI indicates a time domain resource for transmitting the physical uplink shared channel PUSCH resource, the network device receives the first reference signal from the terminal device.
  • an embodiment of the present application provides a communication apparatus for resource scheduling.
  • the communication apparatus for resource scheduling may be a terminal device in the first aspect or any possible design of the first aspect, or a A device arranged in the above-mentioned terminal equipment, or a chip that realizes the functions of the above-mentioned terminal equipment;
  • the communication device for resource scheduling includes a corresponding module, unit, or means (means) for realizing the above-mentioned method, the module, unit, or means (means) It can be realized by hardware, software, or by executing corresponding software by hardware.
  • the hardware or software includes one or more modules or units corresponding to the above functions.
  • the communication apparatus for resource scheduling includes a communication unit and a processing unit.
  • the communication unit is configured to receive configuration information from the network equipment, wherein the configuration information configures a time slot group for a communication device used for resource scheduling; the time slot group includes at least two time slots, and the number of time slots in the time slot group is determined according to the target subcarrier spacing, which is the spacing of the subcarriers on which the communication apparatus for resource scheduling is configured.
  • the communication unit is further configured to receive downlink control information DCI from the network device, wherein the DCI indicates the time domain resources used for data transmission in the time slot group.
  • the processing unit is configured to determine the time domain resource indicated by the DCI.
  • the communication unit is further configured to perform data transmission with the network device based on the time domain resources indicated by the DCI.
  • the DCI further includes third information, wherein the third information is used to determine the first value, and the first value is used to determine the position of the start symbol of the at least one symbol in the time slot and/or at least The number of symbols for a symbol.
  • the communication unit is further configured to receive a third parameter from the network device, wherein the third parameter is used to adjust the first value.
  • the processing unit is further configured to determine at least one of the following according to the first value and the third parameter: the position of the start symbol of the at least one symbol used for transmitting the PDSCH in the first time slot group in the first time slot group; the first time slot The number of symbols in the slot group used to transmit at least one symbol of the PDSCH.
  • the DCI further includes fifth information, wherein the fifth information is used to determine a second value, and the second value is used to determine the position of the start symbol of the at least one symbol in the time slot and/or at least The number of symbols for a symbol.
  • the communication unit is further configured to receive a fifth parameter from the network device, wherein the fifth parameter is used to adjust the second value.
  • the processing unit is further configured to determine at least one of the following according to the second value and the fifth parameter: the position of the start symbol of the at least one symbol used for transmitting the PUSCH in the third time slot group in the first time slot group; the third time slot group The number of symbols in the slot group used to transmit at least one symbol of the PUSCH.
  • an embodiment of the present application provides a communication apparatus for resource scheduling.
  • the communication apparatus for resource scheduling may be a network device in the second aspect or any possible design of the second aspect, or set A device in the above-mentioned network equipment, or a chip that implements the functions of the above-mentioned network equipment;
  • the communication device for resource scheduling includes a corresponding module, unit, or means for implementing the above-mentioned method, and the module, unit, or means can be Implemented by hardware, implemented by software, or implemented by hardware executing corresponding software.
  • the hardware or software includes one or more modules or units corresponding to the above functions.
  • the communication apparatus for resource scheduling includes a communication unit and a processing unit.
  • the communication unit is used to send configuration information to the terminal equipment, wherein the configuration information is that the terminal equipment configures a timeslot group; the timeslot group includes at least two timeslots, and the number of timeslots in the timeslot group is based on the target subcarrier interval It is determined that the target subcarrier spacing is the spacing of the subcarriers configured by the terminal device.
  • the processing unit is used to determine the time domain resources for data transmission.
  • the communication unit is further configured to send downlink control information DCI to the terminal equipment, wherein the DCI indicates the time domain resources used for data transmission in the time slot group.
  • the communication unit is further configured to perform data transmission with the terminal device based on the time domain resources indicated by the DCI.
  • the DCI further includes third information, wherein the third information is used to determine the first value, and the first value is used to determine the position of the start symbol of the at least one symbol in the time slot and/or at least The number of symbols for a symbol.
  • the communication unit is further configured to send a third parameter to the terminal device, wherein the third parameter is used to adjust the first value; the first value and the third parameter are used to determine at least one of the following: the first time slot group is used to transmit PDSCH The position of the starting symbol of at least one symbol of , in the first time slot group; the number of symbols used for transmitting at least one symbol of PDSCH in the first time slot group.
  • the DCI further includes fifth information, wherein the fifth information is used to determine a second value, and the second value is used to determine the position of the start symbol of the at least one symbol in the time slot and/or at least The number of symbols for a symbol.
  • the communication unit is further configured to send a fifth parameter to the terminal device, where the fifth parameter is used to adjust the second value; the second value and the fifth parameter are used to determine at least one of the following: the third time slot group is used to transmit PUSCH The position of the starting symbol of at least one symbol of , in the first slot group; the number of symbols used to transmit at least one symbol of the PUSCH in the third slot group.
  • an embodiment of the present application provides a communication apparatus for resource scheduling.
  • the communication apparatus for resource scheduling may be the terminal device in the third aspect or any possible design of the third aspect, or the A device arranged in the above-mentioned terminal equipment, or a chip that realizes the functions of the above-mentioned terminal equipment;
  • the communication device for resource scheduling includes a corresponding module, unit, or means (means) for realizing the above-mentioned method, the module, unit, or means (means) It can be realized by hardware, software, or by executing corresponding software by hardware.
  • the hardware or software includes one or more modules or units corresponding to the above functions.
  • the communication apparatus for resource scheduling includes a communication unit and a processing unit.
  • the communication unit is configured to receive downlink control information DCI from the network device, where the DCI indicates time domain resources used for data transmission.
  • the processing unit is configured to determine the time domain resource indicated by the DCI.
  • the communication unit is further configured to receive the first reference signal from the network device, and/or the communication unit is further configured to send the first reference signal to the network device; wherein the first reference signal includes at least two demodulation reference signals DMRS; at least two The two DMRSs correspond to the same antenna port, and at least two DMRSs are consecutive in the time domain and located in different subcarriers in the frequency domain; the first reference signal is used to demodulate the time domain resources indicated by the DCI.
  • the communication unit is further configured to receive the second reference signal from the network device, and/or the communication unit is further configured to send the second reference signal to the network device.
  • at least two DMRSs in the second reference signal correspond to the same antenna port, at least two DMRSs in the second reference signal are continuous in the time domain, and are located in different subcarriers in the frequency domain; the second reference signal indicates in the DCI It is transmitted after the first part of the resources and before the second part of the resources indicated by the DCI; the second reference signal is used to demodulate the time domain resources indicated by the DCI.
  • the communication unit is further configured to receive the first reference signal from the network device. If the DCI indicates a time domain resource for transmitting the physical uplink shared channel PUSCH, the communication unit is further configured to send the first reference signal to the network device.
  • an embodiment of the present application provides a communication apparatus for resource scheduling.
  • the communication apparatus for resource scheduling may be a network device in the fourth aspect or any possible design of the fourth aspect, or set A device in the above-mentioned network equipment, or a chip that implements the functions of the above-mentioned network equipment;
  • the communication device for resource scheduling includes a module, unit, or means for implementing the above-mentioned method, and the module, unit, or means can be Implemented by hardware, implemented by software, or implemented by hardware executing corresponding software.
  • the hardware or software includes one or more modules or units corresponding to the above functions.
  • the communication apparatus for resource scheduling includes a communication unit and a processing unit.
  • the processing unit is used to determine the time domain resources for data transmission.
  • the communication unit is configured to send downlink control information DCI to the terminal equipment, wherein the DCI indicates a time domain resource used for data transmission.
  • the communication unit is further configured to receive the first reference signal from the terminal device, and/or the communication unit is further configured to send the first reference signal to the terminal device; wherein the first reference signal includes at least two demodulation reference signals DMRS; at least The two DMRSs correspond to the same antenna port, and at least two DMRSs are consecutive in the time domain and located in different subcarriers in the frequency domain; the first reference signal is used to demodulate the time domain resources indicated by the DCI.
  • the communication unit is further configured to receive the second reference signal from the terminal device, and/or the communication unit is further configured to send the second reference signal to the terminal device.
  • at least two DMRSs in the second reference signal correspond to the same antenna port, at least two DMRSs in the second reference signal are continuous in the time domain, and are located in different subcarriers in the frequency domain; the second reference signal indicates in the DCI It is transmitted after the first part of the resources and before the second part of the resources indicated by the DCI; the second reference signal is used to demodulate the time domain resources indicated by the DCI.
  • the communication unit is further configured to send the first reference signal to the terminal device. If the DCI indicates a time domain resource for transmitting the physical uplink shared channel PUSCH, the communication unit is further configured to receive the first reference signal from the terminal device.
  • an embodiment of the present application provides a communication device for resource scheduling, including: a processor and a memory; the memory is used to store computer instructions, and when the processor executes the instructions, the memory is used for resource scheduling.
  • the communication apparatus executes the method executed by the terminal device in any of the above-mentioned aspects or any possible design of any aspect.
  • the communication apparatus for resource scheduling may be a terminal device in the first aspect or any possible design of the first aspect, or a chip that implements the functions of the terminal device; or, the communication apparatus for resource scheduling may be The terminal device in any possible design of the third aspect or the third aspect, or a chip that implements the functions of the terminal device.
  • an embodiment of the present application provides a communication device for resource scheduling, including: a processor; the processor is coupled to a memory, and is configured to read and execute instructions in the memory, so that the processor is used for resource scheduling.
  • the scheduled communication apparatus performs the method as performed by the terminal device in any of the above aspects or any possible design of the aspect.
  • the communication apparatus for resource scheduling may be a terminal device in the first aspect or any possible design of the first aspect, or a chip that implements the functions of the terminal device; or, the communication apparatus for resource scheduling may be The terminal device in any possible design of the third aspect or the third aspect, or a chip that implements the functions of the terminal device.
  • an embodiment of the present application provides a chip, including a logic circuit and an input and output interface.
  • the input and output interfaces are used for communication with modules other than the chip.
  • the chip may be a chip that implements the function of the terminal device in the first aspect or any possible design of the first aspect.
  • the I/O interface inputs configuration information, downlink control information, or data, or the I/O interface outputs data.
  • a logic circuit is used to run a computer program or instructions to implement the method in the above first aspect or any possible design of the first aspect.
  • the chip may be a chip that implements the terminal device function in the third aspect or any possible design of the third aspect.
  • the I/O interface inputs downlink control information or the first reference signal, or the I/O interface outputs the first reference signal.
  • a logic circuit is used to run a computer program or instructions to implement the method in the above third aspect or any possible design of the third aspect.
  • an embodiment of the present application provides a communication device for resource scheduling, including: a processor and a memory; the memory is used to store computer instructions, and when the processor executes the instructions, the The scheduled communication apparatus performs the method performed by the network device in any of the above aspects or any possible design of any aspect.
  • the communication device for resource scheduling may be a network device in the second aspect or any possible design of the second aspect, or a chip that implements the functions of the network device; or, the communication device for resource scheduling may be A network device in any possible design of the fourth aspect or the fourth aspect, or a chip that implements the function of the network device.
  • an embodiment of the present application provides a communication device for resource scheduling, including: a processor; the processor is coupled to a memory, and is configured to read and execute instructions in the memory, so that the processor is used for
  • the communication apparatus for resource scheduling performs the method as performed by the network device in any of the above-described aspects or any possible designs of any of the aspects.
  • the communication device for resource scheduling may be a network device in the second aspect or any possible design of the second aspect, or a chip that implements the functions of the network device; or, the communication device for resource scheduling may be A network device in any possible design of the fourth aspect or the fourth aspect, or a chip that implements the function of the network device.
  • an embodiment of the present application provides a chip, including a logic circuit and an input and output interface.
  • the input and output interfaces are used for communication with modules other than the chip.
  • the chip may be a chip that implements the network device function in the second aspect or any possible design of the second aspect.
  • the I/O interface outputs configuration information, downlink control information, or data, or the I/O interface inputs data.
  • a logic circuit is used to run a computer program or instructions to implement the method in the above second aspect or any possible design of the second aspect.
  • the chip may be a chip that implements the function of the network device in the fourth aspect or any possible design of the fourth aspect.
  • the I/O interface outputs downlink control information or the first reference signal, or the I/O interface inputs the first reference signal.
  • the logic circuit is used to run the computer program or instructions to implement the method in the above fourth aspect or any possible design of the fourth 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 computer-readable storage medium runs on a computer, the computer can execute any one of the preceding aspects.
  • the embodiments of the present application provide a computer program product including instructions, which, when run on a computer, enables the computer to execute the communication method for resource scheduling according to any one of the above aspects.
  • an embodiment of the present application provides a circuit system, where the circuit system includes a processing circuit configured to execute the communication method for resource scheduling according to any one of the foregoing aspects.
  • an embodiment of the present application provides a communication system, where the communication system includes the terminal device and the network device in any one of the foregoing aspects.
  • FIG. 1 is a schematic diagram of the location of a PDSCH provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of the location of feedback hybrid automatic retransmission request information provided by an embodiment of the present application
  • FIG. 3 is a schematic diagram of the location of a resource allocation provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of the location of still another resource allocation provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of a handover preparation time provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram of still another handover preparation time provided by an embodiment of the present application.
  • FIG. 7 is a schematic diagram of another handover preparation time provided by an embodiment of the present application.
  • FIG. 8 is a schematic diagram of the architecture of a communication system provided by an embodiment of the present application.
  • FIG. 9 is a schematic flowchart of a communication method for resource scheduling provided by an embodiment of the present application.
  • FIG. 10(a) is a schematic diagram of the location of a resource allocation according to an embodiment of the present application.
  • FIG. 10(b) is a schematic diagram of the location of still another resource allocation provided by an embodiment of the present application.
  • FIG. 10(c) is a schematic diagram of a scenario provided by an embodiment of the present application.
  • FIG. 10(d) is a schematic diagram of the location of a PDSCH provided by an embodiment of the present application.
  • FIG. 10(e) is a schematic diagram of the location of still another PDSCH provided by an embodiment of the present application.
  • Figure 11(a) is a schematic diagram of the location of a DMRS provided by an embodiment of the present application.
  • FIG. 11(b) is a schematic diagram of the location of still another DMRS provided by an embodiment of the present application.
  • FIG. 11(c) is a schematic diagram of a scenario provided by an embodiment of the present application.
  • FIG. 12(a) is a schematic flowchart of still another communication method for resource scheduling provided by an embodiment of the present application.
  • FIG. 12(b) is a schematic flowchart of another communication method for resource scheduling provided by an embodiment of the present application.
  • FIG. 12(c) is a schematic diagram of the location of a first reference signal provided by an embodiment of the present application.
  • Fig. 13(a) is a schematic diagram of the location of still another first reference signal provided by an embodiment of the present application.
  • FIG. 13(b) is a schematic diagram of the location of still another first reference signal provided by an embodiment of the present application.
  • FIG. 13(c) is a schematic diagram of the location of still another first reference signal provided by an embodiment of the present application.
  • FIG. 13(d) is a schematic diagram of the location of still another first reference signal provided by an embodiment of the present application.
  • FIG. 13(e) is a schematic diagram of the location of still another first reference signal provided by an embodiment of the present application.
  • FIG. 13(f) is a schematic diagram of the location of still another first reference signal provided by an embodiment of the present application.
  • FIG. 13(g) is a schematic diagram of the location of still another first reference signal provided by an embodiment of the present application.
  • FIG. 13(h) is a schematic diagram of the location of still another first reference signal provided by an embodiment of the present application.
  • FIG. 13(i) is a schematic diagram of the location of still another first reference signal provided by an embodiment of the present application.
  • FIG. 14(a) is a schematic diagram of the location of a second reference signal provided by an embodiment of the present application.
  • FIG. 14(b) is a schematic diagram of the location of still another second reference signal provided by an embodiment of the present application.
  • FIG. 14(c) is a schematic diagram of the location of still another second reference signal provided by an embodiment of the present application.
  • FIG. 14(d) is a schematic diagram of the location of still another second reference signal provided by an embodiment of the present application.
  • FIG. 14(e) is a schematic diagram of the location of still another first reference signal provided by an embodiment of the present application.
  • FIG. 15(a) is a schematic diagram of the location of another DMRS provided by an embodiment of the present application.
  • FIG. 15(b) is a schematic diagram of the location of another DMRS provided by an embodiment of the present application.
  • FIG. 15(c) is a schematic diagram of the location of another DMRS provided by an embodiment of the present application.
  • FIG. 15(d) is a schematic diagram of the location of another DMRS provided by an embodiment of the present application.
  • FIG. 16(a) is a schematic diagram of the location of still another first reference signal provided by an embodiment of the present application.
  • FIG. 16(b) is a schematic diagram of the location of still another first reference signal provided by an embodiment of the present application.
  • 17 is a schematic structural diagram of a communication apparatus for resource scheduling provided by an embodiment of the present application.
  • FIG. 18 is a schematic structural diagram of still another communication apparatus for resource scheduling provided by an embodiment of the present application.
  • PUSCH Physical uplink shared channel
  • the PUSCH is used for scheduling and transmission of uplink data.
  • PDSCH Physical downlink shared channel
  • PDSCH is used for scheduling and transmission of downlink data.
  • the scheduling process of PDSCH and PUSCH mainly includes the following steps:
  • Step 1 The access network device sends DCI to the terminal device.
  • the terminal device receives the DCI from the access network device.
  • the DCI is transmitted through a physical downlink control channel (PDCCH).
  • PDCH physical downlink control channel
  • Step 2 The terminal device determines time-frequency resource information corresponding to at least one of the PDSCH and the PUSCH according to the DCI.
  • the terminal device On the time-frequency resource indicated by the DCI, the terminal device receives the PDSCH. In this case, the terminal device will also feed back hybrid automatic repeat request (HARQ) information on a fixed physical uplink control channel (PUCCH) to inform the access network device that the Whether the PDSCH is received correctly. Based on the HARQ information, when the access network device learns that the PDSCH of the terminal device is not correctly received, the access network device retransmits the PDSCH to the terminal device. When the access network device learns that the PDSCH of the terminal device is correctly received, the access network device no longer sends the PDSCH to the terminal device.
  • HARQ hybrid automatic repeat request
  • the scheduling information in the DCI indicates the value of K0 and the start and length indicator value (SLIV), so that the terminal device determines the time domain resources of the PDSCH based on the value of K0 and SLIV.
  • K0 indicates that the PDSCH is received from the K0th time slot after the terminal device receives the DCI.
  • the first time slot after the time slot in which the terminal device receives the DCI is the first time slot.
  • the value of K0 is less than or equal to 32. That is to say, the access network device sends the PDSCH to the terminal device within 32 time slots starting from the time slot for sending the DCI.
  • SLIV indicates the symbol (symbol) position and symbol length of the PDSCH in the time slot.
  • SLIV can be indicated by DCI.
  • the terminal device determines the S value and the L value based on the SLIV indicated by the DCI and formula (1).
  • the value of S indicates the starting symbol index S of the PDSCH in one slot.
  • the L value indicates the symbol length of PDSCH in one slot.
  • FIG. 1 shows a schematic diagram of a PDSCH resource location in the time domain.
  • slot 0 transmits DCI.
  • DCI indicates that the value of K0 is 3, the value of S is 2, and the value of L is 12.
  • K0, S and L it can be known that some symbols (symbol index 2 to symbol index 13) in time slot 3 transmit PDSCH.
  • the scheduling information in the DCI indicates the value of K1, so that the terminal device determines the time domain resource for feeding back HARQ information based on the value of K1.
  • K1 indicates that the HARQ information is fed back from the K1th time slot after the terminal device receives the PDSCH.
  • the unit of K1 is time slot.
  • K1 occupies 3 bits (bit), and can indicate a maximum of 15 time slots.
  • the first time slot after the terminal device receives the PDSCH is the first time slot.
  • FIG. 2 shows a schematic diagram of a time-domain resource location for feeding back hybrid automatic repeat request (HARQ) information.
  • HARQ hybrid automatic repeat request
  • the scheduling information in the DCI indicates the value of K2 and the SLIV, so that the terminal device determines the time domain resources of the PUSCH based on the value of K2 and the SLIV.
  • K2 indicates that the PUSCH is sent from the K2th time slot after the terminal device receives the DCI.
  • the first time slot after the time slot in which the terminal device receives the DCI is the first time slot.
  • the value of K2 is less than or equal to 32. That is to say, the terminal device starts from the time slot in which the DCI is received, and sends the PUSCH to the access network device within 32 time slots.
  • SLIV indicates the symbol position and symbol length of the PUSCH in the time slot. SLIV still satisfies the above formula (1).
  • the terminal device can determine the start symbol index S and symbol length L corresponding to the PUSCH according to the SLIV indicated by the DCI and the above formula (1).
  • the access network equipment also configures a time-division duplex (time-division duplex, TDD) transmission period and a resource allocation situation in a TDD transmission period for the terminal equipment.
  • TDD time-division duplex
  • the data volume of the downlink service is greater than that of the uplink service.
  • the duration of one TDD transmission cycle is 10ms.
  • the ratio of the number of downlink time slots to the number of uplink time slots in a TDD transmission period includes the following two:
  • the ratio of the number of downlink time slots to the number of uplink time slots is 4:1. That is to say, after 4 downlink time slots, an uplink time slot is followed, as shown in FIG. 3 .
  • a solid line box represents a time slot
  • the solid line box marked with "D” is a downlink (DL) time slot
  • the solid line box marked with "U” is an uplink (uplink, UL) time slot.
  • the ratio of the number of downlink time slots to the number of uplink time slots is 8:1. That is to say, after 8 downlink time slots, an uplink time slot is followed, as shown in FIG. 3 .
  • the relevant protocol also defines another time slot resource allocation situation other than the uplink time slot and the downlink time slot.
  • the other kind of time slot may be called a flexible (flexible or unknown) time slot, and the flexible time slot may include at least one of downlink transmission, guard interval (gap) and uplink transmission.
  • a solid line box represents a time slot
  • the solid line box marked "D” is a downlink time slot
  • the solid line box marked "U” is an uplink time slot time slot
  • the solid line box marked "F” is a flexible time slot.
  • a dotted box represents one symbol
  • the symbols corresponding to symbol index 0 to symbol index 11 are used for downlink transmission.
  • the symbol corresponding to symbol index 12 belongs to the guard interval symbol.
  • the symbol corresponding to symbol index 13 (box marked with the letter "U”) is used for upstream transmission.
  • Table 1 shows some possible time slot formats. Taking “one slot includes 14 symbols” as an example, Table 1 shows 29 slot formats (ie slot format 0 to slot format 28). Different time slot formats include different numbers of uplink symbols, downlink symbols and flexible symbols. Flexible symbols can be used for guard intervals.
  • the symbol marked “D” is the downlink symbol
  • the symbol marked "U” is the uplink symbol
  • the symbol marked “F” is the guard interval symbol, which may also be called flexible (flexible or unknown) symbols.
  • the terminal device can obtain how to switch between uplink transmission and downlink transmission according to the time slot format in Table 1 above.
  • time slot format 0 the symbol of one time slot is a downlink symbol, and the terminal device does not need to switch.
  • time slot format 28 the terminal device transmits downlink signals on the symbols corresponding to symbol indices 0-11, and transmits uplink signals on the symbols corresponding to symbol index 13, and the symbol corresponding to symbol index 12 is used for downlink and uplink. Ready to switch between.
  • the handover preparation time includes the handover time after receiving the signal and timing advance (TA), where TA refers to the transmission delay (mainly air interface delay) in the process of the terminal device transmitting information to the network device.
  • TA refers to the transmission delay (mainly air interface delay) in the process of the terminal device transmitting information to the network device.
  • FIG. 5 shows a schematic diagram of a possible handover preparation time.
  • a box in Figure 5 represents a symbol. Among them, the solid line box represents the symbol of the transmission signal.
  • the terminal device receives the DL signal from the network device, and after the interval "time period 1", the terminal device sends the UL signal to the network device.
  • the handover preparation time satisfies the following formula:
  • T represents the handover preparation time. Indicates the number of symbols in the interval between uplink symbols and downlink symbols.
  • T C represents the sampling interval.
  • T TA means timing advance.
  • the TAs corresponding to different terminal devices are different, so that the network device can receive the information of the multiple terminal devices at the same time point, so as to demodulate the information without interference.
  • the handover preparation time predefined in the relevant protocols is greater than 14us to ensure lossless transmission of uplink and downlink handovers. In this way, the number of guard interval symbols between uplink symbols and downlink symbols satisfies the following formula (3):
  • X represents the number of guard interval symbols between uplink symbols and downlink symbols
  • SCS represents subcarrier spacing (subcarrier spacing, SCS).
  • 1/SCS stands for symbol duration. Among them, the cyclic prefix (CP) in a symbol is ignored, and the propagation time of the signal is ignored, that is, the value of the timing advance is zero.
  • the subcarrier spacing can be 120 kHz, 240 kHz, 480 kHz, 960 kHz, or 1920 kHz.
  • the value of SCS is different, and the corresponding number of guard interval symbols is also different. For example, see Table 2, which shows the number of guard interval symbols corresponding to different SCSs.
  • the terminal device uses one time slot resource for switching between receiving and sending, as shown in Figure 6, a TDD transmission A period consists of 5 time slots.
  • a horizontally placed box represents a time slot
  • a vertically placed box represents a symbol.
  • a number in a box indicates the index of the slot corresponding to that box.
  • the letter “D” in a box indicates that the time slot corresponding to that box is used for downlink transmission.
  • the letter “U” in a box indicates that the time slot corresponding to that box is used for uplink transmission.
  • the letter “F” indicates that some of the symbols in the slot are used as handover preparation time.
  • one slot includes 14 symbols. Time slot 0, time slot 1 and time slot 2 are used for downlink data transmission, as shown by the solid line box in FIG. 6 .
  • Time slot 4 is used for upstream data transmission, as shown by the dotted box in FIG. 6 .
  • the 13 symbols in slot 3 are guard interval symbols, as indicated by the diagonally filled boxes in FIG. 6 . That is to say, about 14 symbols in every 5 time slots (that is, the number of symbols included in one time slot) are guard interval symbols. In this way, the resource ratio of the switching overhead is about 14/70, that is, 20% of the switching overhead, Switching is expensive.
  • the number of time slots used for downlink data transmission is 3, namely slot 0, time slot 1 and time slot 2, as shown in the solid line shown in the box.
  • the number of time slots used for uplink data transmission is 1, that is, slot 4, as indicated by the dotted box.
  • the number of time slots for the terminal equipment to prepare for switching between sending and receiving is 1, that is, time slot 3, as shown in the square filled with diagonal lines.
  • the number of time slots used for downlink data transmission is 29, as shown by the solid line box.
  • the number of time slots used for upstream data transmission is 10, as indicated by the dotted box.
  • the number of time slots for the terminal equipment to prepare for switching between transmission and reception is 1, as shown in the box filled with slashes. That is, about 14 symbols in every 40 slots (ie, the number of symbols included in one slot) are guard interval symbols. In this way, when the TDD transmission period is configured for the terminal device based on the reference SCS, the frequency of the terminal device switching between reception and transmission is also reduced, thereby reducing the switching overhead.
  • one TDD transmission cycle includes 40 time slots, and there may be the following situations: starting from the time slot for transmitting DCI, the PDSCH is transmitted in the time slot after 32 time slots , the DCI cannot indicate the slot position of the PDSCH. Similarly, if the PUSCH is transmitted in the time slot after 32 time slots from the time slot in which the DCI is transmitted, the DCI also cannot indicate the time slot position of the PUSCH.
  • the embodiment of the present application provides a communication method for resource scheduling, and the communication method for resource scheduling in the embodiment of the present application is applicable to various communication systems.
  • the communication method for resource scheduling provided in the embodiments of the present application may be applied to a long term evolution (long term evolution, LTE) system, or a fifth-generation (fifth-generation, 5G) communication network, or other similar networks, or in the future in other networks.
  • FIG. 8 is a schematic diagram of the architecture of a communication system applicable to the communication method for resource scheduling according to the embodiment of the present application.
  • the communication system may include a terminal device 80 and a network device 81 .
  • the terminal device 80 and the network device 81 are connected wirelessly.
  • the number of terminal devices 80 may be one or more, and the number of network devices 81 may also be one or more. Only one network device and two terminal devices are shown in FIG. 8 .
  • FIG. 8 is only a schematic diagram, and does not constitute a limitation on the applicable scenarios of the communication method for resource scheduling according to the embodiment of the present application.
  • the terminal device 80 also known as user equipment (UE), mobile station (MS), mobile terminal (MT) or terminal (terminal), etc., is a device that provides voice/data connectivity to users.
  • devices such as handheld or in-vehicle devices with wireless connectivity.
  • the terminal device can be specifically: mobile phone (mobile phone), tablet computer, notebook computer, PDA, mobile internet device (MID), wearable device, virtual reality (virtual reality, VR) device, augmented reality (augmented reality) reality, AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grid Terminal, wireless terminal in transportation safety, wireless terminal in smart city, or wireless terminal in smart home, terminal equipment in future 5G communication network or communication network after 5G etc., which are not limited in the embodiments of the present application.
  • the network device 81 is a device in a wireless communication network, for example, a radio access network (RAN) node that connects the terminal device 80 to the wireless communication network.
  • RAN nodes are: gNB, transmission reception point (TRP), evolved Node B (evolved Node B, eNB), radio network controller (RNC), Node B (Node B) B, NB), base station controller (BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved NodeB, or home Node B, HNB), base band unit (base band unit) , BBU), or wireless fidelity (wireless fidelity, Wifi) access point (access point, AP), or 5G communication network or network-side equipment in the communication network after 5G, etc.
  • TRP transmission reception point
  • eNB evolved Node B
  • RNC radio network controller
  • Node B Node B
  • BSC base station controller
  • BTS base transceiver station
  • home base station for
  • An embodiment of the present application provides a communication method for resource scheduling, which is used in a DCI resource scheduling process.
  • the communication method for resource scheduling includes the following steps:
  • the network device sends configuration information to the terminal device.
  • the terminal device receives the configuration information from the network device.
  • the configuration information is that the terminal equipment configures a time slot group, the time slot group includes at least two time slots, and the number of time slots in a time slot group is determined according to the target subcarrier interval, and the target subcarrier interval is configured by the terminal device. the subcarrier spacing.
  • the network device sends the DCI to the terminal device.
  • the terminal device receives the DCI from the network device.
  • DCI indicates the time domain resources used for data transmission in the time slot group.
  • the terminal device performs data transmission with the network device based on the time domain resources indicated by the DCI.
  • the DCI sent by the network device to the terminal device can indicate the time domain resources used for data transmission in the time slot group, so as to realize resource scheduling based on the time slot group.
  • resource scheduling can be implemented in units of time slot groups, which also enables DCI to indicate more time slot resources , which improves the efficiency and flexibility of resource scheduling compared to resource scheduling based on time slots.
  • the time slots in a time slot group can be regarded as a whole, and the transmission directions of a time slot group are consistent, thereby reducing the frequency of the terminal equipment performing uplink and downlink switching, saving Uplink and downlink switching overhead.
  • the network device sends configuration information to the terminal device.
  • the terminal device receives configuration information from the network device.
  • the configuration information is used to configure the time slot group for the terminal device.
  • a slot group can also be replaced by a set of slots, a slot unit, etc.
  • the configuration information includes time slot bundling indication information.
  • the specific functions of the configuration information are as follows:
  • the configuration information (such as time slot binding indication information) instructs the terminal device to configure the transmission direction of the TDD transmission period based on the time slot group.
  • the high-layer parameter for configuring the transmission direction of the TDD transmission period includes at least one of the following information:
  • the first item is time division multiplexing-uplink-downlink-common configuration (time-division duplex-uplink-downlink-configcommon, TDD-UL-DL-ConfigCommon) information.
  • the second item is time division multiplexing-uplink-downlink-dedicated configuration (time-division duplex-uplink-downlink-configdedicated, TDD-UL-DL-ConfigDedicated) information.
  • TDD-UL-DL-ConfigCommon and/or TDD-UL-DL-ConfigDedicated are extended from slot to slot group.
  • one block represents one time slot.
  • a solid line box indicates that the time slot is used for downlink transmission
  • a dashed line box indicates that the time slot is used for upstream transmission
  • a diagonally filled box indicates that the time slot is used for handover preparation time.
  • the configuration information configures the transmission directions of 5 time slot groups (ie, 40 time slots) at a time.
  • the configuration information (eg, time slot binding indication information) also indicates resource scheduling based on time slot groups.
  • one block represents one time slot.
  • a solid line box indicates that the time slot is used for downlink transmission
  • a dashed line box indicates that the time slot is used for upstream transmission
  • a diagonally filled box indicates that the time slot is used for handover preparation time.
  • the DCI may indicate one time slot group among the 5 time slot groups.
  • one slot group includes 4 slots, as shown by the thin dotted line in Fig. 10(b).
  • the DCI may indicate one time slot group among the 10 time slot groups.
  • a time slot group includes at least two time slots.
  • the number of slots in a slot group may be 2, 4, 8, or 16.
  • the number of slots in a slot group is determined according to the target subcarrier spacing.
  • the target subcarrier spacing is the spacing of the subcarriers of the bandwidth part (BWP) that the terminal device is configured to use for data transmission.
  • the target subcarrier spacing can be 240K, 480K, 960K, or 1920K.
  • the number of time slots in a time slot group is determined according to the target subcarrier spacing and the reference subcarrier spacing. For example, the number of time slots in a time slot group satisfies the following formula:
  • A represents the number of time slots in a time slot group
  • ⁇ 1 represents the index number corresponding to the interval of the subcarriers of the BWP configured by the terminal device for data transmission in the protocol
  • ⁇ 2 represents the subcarrier interval of the reference in the protocol.
  • the corresponding index number in the protocol may also be referred to as a preset subcarrier spacing.
  • the "number of time slots in a time slot group" can be determined in the following two ways:
  • the terminal device is configured with a "reference SCS", and then the terminal device determines the actual subcarrier spacing index ⁇ 1 and the reference subcarrier spacing index ⁇ 2 configured by itself in combination with Table 3, and then determines A.
  • the benchmark SCS may be configured by a network device.
  • the RRC layer signaling carries an index number corresponding to the SCS of the benchmark in the protocol.
  • the network device configures the SCS of the benchmark for the terminal device through the RRC layer signaling.
  • the RRC layer signaling may be an RRC message, a system message, or the like.
  • the base SCS can also be predefined by the protocol.
  • the SCS based on the uplink subcarrier spacing of the initial BWP configured by the terminal device, or the SCS based on the downlink subcarrier spacing of the initial BWP configured by the terminal device.
  • the SCS based on the subcarrier interval used by the synchronization signal of the terminal device currently accessing the cell.
  • Table 3 shows the index numbers corresponding to the subcarrier spacing in the protocol.
  • the introduction about Table 3 is as follows: Compared with the parameter set of LTE, new radio (NR) supports many different types of subcarrier spacing.
  • the NR parameter set is one or more parameters in the subcarrier spacing, symbol length, time slot length and cyclic prefix (cyclic prefix, CP) length and other parameters.
  • Table 3 shows an NR parameter set.
  • ⁇ represents the index number corresponding to the subcarrier spacing in the protocol
  • ⁇ f represents the value of the subcarrier spacing.
  • NCP normal cyclic prefix
  • ECP extended cyclic prefix
  • Other subcarrier spacing has only one CP type, namely NCP.
  • the network device sends the indication information 1 to the terminal device.
  • the terminal device receives the indication information 1 from the network device.
  • the indication information 1 indicates "the number of time slots in a time slot group".
  • the indication information 1 may include a numerical value, which is "the number of timeslots in a timeslot group". The value can be one of the set ⁇ 1, 2, 4, 8 ⁇ .
  • the indication information 1 may also include an index number, and the value corresponding to the index number is "the number of time slots in a time slot group". Among them, there is a mapping relationship between the index number and the value in the indication information 1, as shown in Table 4:
  • the index number number of slots in a slot group 0 1 1 2 2 4 3 8
  • the configuration information can configure multiple time slot groups for the terminal device, and the number of time slots in different time slot groups may be the same or different.
  • the network device sends the DCI to the terminal device.
  • the terminal device receives the DCI from the network device.
  • DCI indicates the resources used for data transmission in the time slot group.
  • the time slot group indicated by the DCI is the time slot group configured by the terminal equipment in the configuration information in S901.
  • the DCI indicates the resources used for downlink data transmission in the time slot group, that is, the resources of the PDSCH.
  • the DCI indicates the resources used for uplink data transmission in the time slot group, that is, the resources of the PUSCH.
  • the DCI indicates the time domain resources used for downlink data transmission in the time slot group, that is, the time domain resources of the PDSCH.
  • Case 1 The network device schedules the entire time slot group based on the DCI for PDSCH transmission.
  • the DCI includes information 1, which indicates the first time slot group in the time slot group, and the first time slot group includes time domain resources for transmitting PDSCH. That is, the network device can schedule time domain resources in a certain time slot group to transmit PDSCH through DCI.
  • the information 1 includes parameter 1
  • the parameter 1 indicates the time slot group or the number of time slots spaced apart from the first time slot group by the time slot group in which the DCI is located.
  • the DCI includes parameter 1 to indicate the first time slot group to the terminal device through parameter 1 .
  • parameter 1 indicates the number of time slot groups between the time slot group where the DCI is located and the first time slot group
  • parameter 1 indicates that K0 is "2”
  • the "first time slot group” is The third time slot group after the time slot group where the DCI is located, namely the time slot group 3 (not shown in FIG. 10( c )), is separated by two time slot groups between time slot 0 and time slot 3 .
  • the first time slot group of is the first time slot group.
  • a box represents a time slot.
  • a solid line box indicates that the time slot is used for downlink transmission
  • a dotted line box indicates that the time slot is used for uplink transmission
  • a box filled with diagonal lines indicates that the time slot is used for handover preparation time.
  • the number represents the index of the time slot group. DCI is transmitted through the second time slot in the time slot group 0.
  • parameter 1 indicates that the value of K0 is "2”
  • the "first time slot group” is where the DCI is located
  • the second time slot group after the time slot group of the That is, the entire time slot group can be scheduled for PDSCH transmission.
  • Case 2 The network device schedules some time domain resources in a time slot group based on the DCI for PDSCH transmission.
  • the terminal device on the basis of Case 1, the terminal device also determines some time domain resources in a time slot group in combination with Information 2 to transmit PDSCH.
  • the information 2 is used to determine at least one symbol used for transmitting PDSCH in the first time slot group.
  • the information 2 and the information 1 may be carried in the same signaling, or may be carried in different signaling, which is not limited in this embodiment of the present application.
  • Case 1 For the introduction of information 1, please refer to Case 1, which will not be repeated here. Below, two possible examples are presented:
  • Example 1 Taking the symbol corresponding to the first time slot group as the object, the terminal device determines at least one of the following according to information 2 and parameter 2: the position of the start symbol of at least one symbol of the PDSCH in the first The number of symbols in the first slot group for at least one symbol. Specifically, information 2 indicates the value of SLIV. The terminal device determines the value of S and the value of L according to SLIV and formula (1). Wherein, the value of S indicates the position of the start symbol used for data transmission in the time slot, and the value of L indicates the number of symbols used for data transmission.
  • the terminal device uses parameter 2 to adjust the value of S, and then determines the position of the start symbol for PDSCH transmission in the first time slot group in the first time slot group according to the adjusted value of S.
  • parameter 2 is a factor for adjusting the value of S.
  • the terminal device uses parameter 2 to adjust the value of L, and then determines the number of symbols used for PDSCH transmission in the first time slot group according to the adjusted value of L.
  • parameter 2 is a factor for adjusting the value of L.
  • the process of "parameter 2 adjusts the value of S and the value of L" satisfies the following formula:
  • S' is the adjusted value of S
  • L' is the adjusted value of L
  • Y represents parameter 2.
  • FIG. 10(d) shows a schematic diagram of symbol positions for PDSCH transmission.
  • a solid-line box represents a time slot
  • a dotted-line box represents a symbol.
  • the terminal device determines the first time slot group, it takes the symbols in the first time slot group (that is, the 112 symbols corresponding to 8 time slots) as the object. Taking the value of 2 and the value of L as 12" as an example, the terminal device performs calculation in combination with formula (5) to obtain "the value of S' is 8, and the value of L' is 48". That is to say, the 9th symbol in the first slot group is used as the start symbol of PDSCH, and the 48 consecutive symbols in the first time slot group are used as the symbol length of PDSCH, as shown in FIG. 10(d).
  • the network device may indicate the value of parameter 2 to the terminal device through a signaling. That is, the network device sends parameter 2 to the terminal device. Correspondingly, the terminal device receives the parameter 2 from the network device.
  • the parameter 2 may be carried in the configuration information of step S902, may also be carried in DCI, or may be carried in other signaling, which is not limited in this embodiment of the present application.
  • the values of parameter 2 and "the number of time slots in a time slot group A" may be the same or different. In the case that the value of parameter 2 is the same as "the number of time slots in a time slot group A", the network device does not need to send signaling to indicate the value of parameter 2 to the terminal device, so as to save signaling overhead. When the value of parameter 2 is different from the value of "the number of time slots in a time slot group A", the network device sends signaling to indicate the value of parameter 2 to the terminal device, so as to improve the flexibility of resource scheduling.
  • Example 2 Taking the time slots and symbols in the first time slot group as objects, in the case that the information 2 indicates SLIV, the terminal device determines at least one of the following according to the SLIV and the indication information 2: the starting point in at least one symbol of the PDSCH The position of the symbol in the first slot group, and the number of symbols in the first slot group of at least one symbol of the PDSCH. Wherein, the indication information 2 indicates the start symbol index and the end symbol index. The terminal device determines the value of S and the value of L according to SLIV and formula (1). Wherein, the value of S indicates the initial time slot used for data transmission in the first time slot group. The value of L indicates the number of time slots used for data transmission in the first time slot group.
  • the terminal device determines the starting time slot of the PDSCH in the first time slot group according to the value of S.
  • the terminal device determines the number of time slots of the PDSCH in the first time slot group according to the value of L.
  • the indication information 2 includes a start symbol index indication and an end symbol index indication.
  • the starting symbol index indicates the starting symbol position of the PDSCH in the first scheduled time slot.
  • the end symbol index indicates the symbol position of the end of the PDSCH in the last slot of the schedule.
  • the terminal device determines the start symbol of the PDSCH in the start time slot according to the start symbol index indication in the indication information 2.
  • the terminal device determines the end symbol of the PDSCH in the last time slot in the first time slot group according to the end symbol index indication in the indication information 2.
  • the terminal device determines at least one of the following according to SLIV and indication information 2: the start symbol in at least one symbol of PDSCH is in the first time slot group The number of symbols in the first slot group of at least one symbol of the PDSCH.
  • the terminal device determines the value of S and the value of L according to SLIV and formula (1).
  • the value of S is used to indicate which time slot in the multiple time slot groups configured by the terminal device is the initial time slot.
  • the value of L is used to indicate the number of time slots used for PDSCH in multiple time slot groups configured by the terminal device.
  • the multiple timeslot groups configured by the terminal device in S901 are regarded as a whole, so as to indicate which timeslots in the multiple timeslot groups are used for PDSCH transmission.
  • the indication information 2 refer to the description of Example 2, which will not be repeated here.
  • FIG. 10(e) shows a schematic diagram of symbol positions for PDSCH transmission.
  • the 8 time slot groups configured by the configuration information are taken as an example, and each time slot group includes 4 time slots. Taking the above “32 time slots" as the object, the terminal device performs calculation according to SLIV and formula (1) to obtain "the value of S is 8, and the value of L is 20".
  • the terminal device determines the 8th time slot in the above "32 time slots" as the initial time slot of the PDSCH, and the number of time slots is 20 time slots starting from the 8th time slot.
  • the terminal equipment determines the start symbol in the 8th time slot and the end symbol in the last time slot in combination with the indication information 2. Specifically, as shown in Figure 10(e), the start symbol of the PDSCH is the first symbol in the 8th time slot. 8 symbols, the ending symbol is the 3rd symbol in the 27th slot.
  • the terminal device can determine the resource for feeding back the HARQ information in combination with the information 3 .
  • the information 3 indicates the second time slot group in the time slot group
  • the second time slot group includes time domain resources used for transmitting HARQ information
  • the HARQ information indicates the receiving status of the PDSCH. That is, the network device can schedule time domain resources in a certain time slot group through DCI to transmit HARQ information.
  • the information 2 and the information 3 may be carried in the same signaling, or may be carried in different signaling, which is not limited in this embodiment of the present application.
  • parameter 3 indicates the number of time slot groups by which the first time slot group is spaced from the second time slot group.
  • parameter 3 indicates the number of time slot groups between the first time slot group and the second time slot group
  • parameter 3 indicates that the value of K1 is "2”
  • “the second time slot group is “Group” is the third time slot group after the time slot group where the DCI is located, that is, the time slot group 5 (not shown in FIG. 10(c) )
  • the time slot 5 and the time slot 3 are separated by two time slot groups.
  • the HARQ information starts to transmit HARQ information.
  • the terminal device receives the PDSCH
  • the first time slot group after the time slot group is the first time slot group.
  • the "second time slot group” is after the time slot group where the PDSCH is located.
  • the second time slot group of namely slot group 4, is shown in Figure 10 (c).
  • the terminal device transmits HARQ information through the first time slot in the time slot group 4 .
  • the first slot in the second slot group may be the first PUCCH resource in the slot group.
  • the terminal device after determining the second time slot group, the terminal device sends HARQ information to the network device on the PUCCH resource in the second time slot group.
  • the PUCCH resource is a preconfigured transmission resource, and the specific process can refer to the prior art.
  • the time domain resources in the second slot group include at least one PUCCH resource.
  • the terminal equipment transmits HARQ information on the first (or second, third) PUCCH resource. Wherein, on which PUCCH resource in the second time slot group the terminal equipment feeds back the HARQ information may be predefined by the protocol.
  • the terminal device feeds back HARQ information to the network device based on the time domain resources of the second time slot group.
  • the DCI indicates the resources used for uplink data transmission in the time slot group, that is, the resources of the PUSCH.
  • Case 1 The network device schedules the entire time slot group based on the DCI to transmit the PUSCH.
  • the DCI includes information 4, which indicates the third slot group in the slot group, and the third slot group includes time domain resources for transmitting PUSCH. That is, the network device can schedule time domain resources in a certain time slot group through DCI to transmit PUSCH.
  • information 4 includes parameter 4"
  • parameter 4 indicates the number of timeslot groups that are spaced from the third timeslot group between the timeslot group where the DCI is located.
  • the DCI includes parameter 4 to indicate the third time slot group to the terminal device through parameter 4.
  • parameter 4 indicates the number of time slot groups between the time slot group where the DCI is located and the third time slot group
  • parameter 4 indicates that the value of K2 is "4"
  • the "third time slot group” is The fifth time slot group after the time slot group where the DCI is located is the time slot group 5 (not shown in FIG. 10( c )), and the time slot 0 and the time slot 5 are separated by 4 time slot groups.
  • the PUSCH starts to be sent.
  • the first time slot group of is the first time slot group.
  • the value of K2 is indicated as " In the case of "4", the "third time slot group” is the fourth time slot group after the time slot group where the DCI is located, that is, the time slot group 4, as shown in Fig. 10(c).
  • the network device can schedule the entire time slot group for PUSCH transmission based on the DCI.
  • Case 2 The network device schedules some time domain resources in a time slot group based on DCI for transmitting PUSCH.
  • the terminal device determines some time domain resources in a time slot group in combination with Information 2 to transmit the PUSCH.
  • the information 2 is used to determine at least one symbol used for transmitting the PUSCH in the first time slot group.
  • the information 2 and the information 1 may be carried in the same signaling, or may be carried in different signaling, which is not limited in this embodiment of the present application.
  • Case 1 For the introduction of information 1, please refer to Case 1, which will not be repeated here. Below, two possible examples are presented:
  • Example 1 Taking the symbol corresponding to the third time slot group as the object, the terminal device determines at least one of the following according to information 2 and parameter 2: the position of the start symbol of at least one symbol of the PUSCH in the third time slot group, the The number of symbols in the third slot group for at least one symbol.
  • information 2 indicates the value of SLIV.
  • the terminal device determines the value of S and the value of L according to SLIV and formula (1). Wherein, the value of S indicates the position of the start symbol used for data transmission in the time slot, and the value of L indicates the number of symbols used for data transmission.
  • the terminal device uses parameter 2 to adjust the value of S, and then determines the position of the start symbol for transmitting PUSCH in the third time slot group in the third time slot group according to the adjusted value of S.
  • parameter 2 is a factor for adjusting the value of S.
  • the terminal device uses parameter 2 to adjust the value of L, and then determines the number of symbols used for PUSCH transmission in the third time slot group according to the adjusted value of L.
  • parameter 2 is a factor for adjusting the value of L.
  • FIG. 10(d) shows a schematic diagram of symbol positions for transmitting PUSCH.
  • a solid-line box represents a time slot
  • a dotted-line box represents a symbol.
  • the terminal device determines the third time slot group, it takes the symbols in the third time slot group (that is, 112 symbols corresponding to 8 time slots) as the object, and in the case that the value of Y is 4, it still uses the symbol "S" as the object.
  • the terminal device performs calculation in combination with formula (5) to obtain "the value of S' is 8, and the value of L' is 48". That is to say, the 9th symbol in the third slot group is used as the start symbol of PUSCH, and the 48 consecutive symbols in the third time slot group are used as the symbol length of PUSCH, as shown in FIG. 10(d).
  • Example 2 Taking the time slots and symbols in the third time slot group as the object, in the case that the information 2 indicates SLIV, the terminal device determines at least one of the following according to the SLIV and the indication information 2: the start of at least one symbol of the PUSCH The position of the symbol in the third slot group, and the number of symbols in the third slot group of at least one symbol of the PUSCH. Wherein, the indication information 2 indicates the start symbol index and the end symbol index. The terminal device determines the value of S and the value of L according to SLIV and formula (1). Wherein, the value of S indicates the initial time slot used for data transmission in the third time slot group. The value of L indicates the number of time slots used for data transmission in the third time slot group.
  • the terminal device determines the starting time slot of the PUSCH in the third time slot group according to the value of S.
  • the terminal device determines the number of time slots of the PUSCH in the third time slot group according to the value of L.
  • the indication information 2 includes a start symbol index indication and an end symbol index indication.
  • the start symbol index indicates the start symbol position of the PUSCH in the first scheduled time slot.
  • the end symbol index indicates the symbol position of the end of the PUSCH in the last slot of the schedule.
  • the terminal device determines the start symbol of the PUSCH in the start time slot according to the start symbol index indication in the indication information 2.
  • the terminal device determines the end symbol of the PUSCH in the last time slot in the third time slot group according to the end symbol index indication in the indication information 2.
  • the terminal device determines at least one of the following according to the SLIV and the indication information 2: the start symbol in at least one symbol of the PUSCH is in the third time slot group , the number of symbols in the third slot group for at least one symbol of the PUSCH.
  • the terminal device determines the value of S and the value of L according to SLIV and formula (1).
  • the value of S is used to indicate which time slot in the multiple time slot groups configured by the terminal device is the initial time slot.
  • the value of L is used to indicate the number of time slots for the PUSCH in the multiple time slot groups configured by the terminal device.
  • the multiple timeslot groups configured by the terminal device in S901 are regarded as a whole, so as to indicate which timeslots in the multiple timeslot groups are used for transmitting the PUSCH.
  • the indication information 2 please refer to the description of the second example, which will not be repeated here.
  • FIG. 10(e) shows a schematic diagram of symbol positions for transmitting PUSCH.
  • the 8 time slot groups configured by the configuration information are taken as an example, and each time slot group includes 4 time slots. Taking the above “32 time slots" as the object, the terminal device performs calculation according to SLIV and formula (1) to obtain "the value of S is 8, and the value of L is 20".
  • the terminal device determines the 8th time slot in the above "32 time slots" as the initial time slot of the PUSCH, and the number of time slots is 20 time slots starting from the 8th time slot.
  • the terminal equipment determines the start symbol in the 8th time slot and the end symbol in the last time slot in combination with the indication information 2. Specifically, as shown in Figure 10(e), the start symbol of the PUSCH is the first symbol in the 8th time slot. 8 symbols, the ending symbol is the 3rd symbol in the 27th slot.
  • the terminal device performs data transmission with the network device through the resource indicated by the DCI.
  • the starting symbol of the PDSCH in the first slot group is the ninth symbol in the first slot group, and the symbol length of the PDSCH in the first slot group Taking 48 symbols as an example, the network device sends data to the terminal device through some symbols in the first time slot group (ie, 48 symbols starting with the 9th symbol in the first time slot group).
  • the terminal device receives data from the network device through some symbols in the first time slot group (ie, 48 symbols starting with the 9th symbol in the first time slot group).
  • the HARQ information is in the first time slot in the second time slot group.
  • the terminal device feeds back HARQ information to the network device through the first time slot in the second time slot group.
  • the network device receives the HARQ information from the terminal device through the first time slot in the second time slot group.
  • the HARQ information indicates the reception status of the PDSCH.
  • the start symbol of the PUSCH in the third slot group is the ninth symbol in the third slot group, and the PUSCH symbol in the third slot group Taking the length of 48 symbols as an example, the terminal device sends data to the network device through some symbols in the third time slot group (ie, 48 symbols starting with the 9th symbol in the third time slot group).
  • the network device receives data from the terminal device through some symbols in the third time slot group (ie, 48 symbols starting with the 9th symbol in the third time slot group).
  • the terminal device receives the PDCCH, and after a preset duration, the terminal device applies the updated uplink beam and/or downlink beam.
  • the terminal device applies the updated uplink beam and/or downlink beam after the time duration corresponding to the preset number of time slot groups.
  • the preset duration is 112 symbols.
  • the embodiment of the present application also provides a communication method for resource scheduling, which is used for a transmission process of a demodulation reference signal (de-modulation reference signal, DMRS) in resource scheduling.
  • a demodulation reference signal demodulation reference signal, DMRS
  • DMRS demodulation reference signal
  • the demodulation reference signal is usually adjacent to the data channel to facilitate accurate channel estimation and demodulation.
  • the DMRS corresponding to the same port is described as “one DMRS”.
  • DMRSs on two consecutive resource elements (resource elements, REs) are described as “one DMRS”.
  • the DMRS on one RE is described as “one DMRS”.
  • Take "The DMRS on one RE is described as 'one DMRS'" as an example to introduce.
  • the smallest resource granularity is one symbol.
  • the smallest granularity is one subcarrier.
  • a time-frequency resource unit composed of a symbol and a subcarrier is an RE.
  • the symbol mapping method of DMRS is as follows: in the case where one symbol is used to carry DMRS in one time slot, for example, the one symbol may be the third symbol (symbol index is 2) in the time slot, as shown in Figure 11 ( a) shown.
  • one block represents one symbol.
  • a solid line box indicates that the symbol is used to transmit PDCCH
  • a dotted line box indicates that the symbol is used to transmit data
  • a diagonally filled box indicates that the symbol is used to carry DMRS.
  • one time slot may use multiple symbols to carry the DMRS.
  • the plurality of symbols may be the 3rd symbol (symbol index is 2) and the 12th symbol (symbol index is 11) in the time slot, or the plurality of symbols may be the 3rd symbol in the time slot symbol (symbol index 2), the 8th symbol (symbol index 7), and the 12th symbol (symbol index 11), or the plurality of symbols may be the 3rd symbol (symbol index 11) in the slot index 2), the 6th symbol (symbol index 5), the 9th symbol (symbol index 8), and the 12th symbol (symbol index 11).
  • the DMRS on one symbol may include DMRSs corresponding to antenna ports, and the DMRSs are mapped in the frequency domain as follows: DMRSs corresponding to the same antenna port (port) are placed at equal intervals in the frequency domain.
  • the pattern design of DMRS is divided into type (Type) 1 and type 2. Wherein, in the type 1 mapping manner, the DMRS corresponding to the same antenna port are separated by one subcarrier in the frequency domain. In the type 2 mapping manner, the DMRS corresponding to the same antenna port occupy two consecutive subcarriers in the frequency domain.
  • FIG. 11(b) shows a schematic diagram of frequency domain mapping of a DMRS. A vertically placed rectangular box represents a symbol.
  • a dotted rectangle indicates that the symbol is used to transmit data
  • a rectangle filled with diagonal lines indicates that the symbol is used to carry DMRS.
  • a horizontally placed rectangular box represents an RE.
  • a solid rectangle represents the DMRS corresponding to antenna port 0 and antenna port 1
  • a dotted rectangle represents the DMRS corresponding to antenna port 2 and antenna port 3
  • a diagonally filled rectangle represents the antenna DMRS corresponding to port 4 and antenna port 5.
  • the DMRS corresponding to antenna port 0 and antenna port 1 are distributed in the (i+1)th subcarrier, the (i+3)th subcarrier, The (i+5)th subcarrier and the (i+7)th subcarrier.
  • the DMRS corresponding to antenna port 2 and antenna port 3 are distributed on the (i+2)th subcarrier, the (i+4th)th subcarrier, the (i+6th)th subcarrier and the (i+7th)th subcarrier.
  • i is a positive integer.
  • the DMRSs corresponding to the same antenna port are separated by 1 subcarrier in the frequency domain.
  • the DMRS corresponding to antenna port 0 and antenna port 1 are distributed in the (i+1)th subcarrier, the (i+2)th subcarrier, and the (i+7)th subcarrier and the (i+8)th subcarrier.
  • the DMRS corresponding to antenna port 2 and antenna port 3 are distributed on the (i+3)th subcarrier, the (i+4th)th subcarrier, the (i+9th)th subcarrier and the (i+10th)th subcarrier.
  • the DMRS corresponding to antenna port 4 and antenna port 5 are distributed on the (i+5)th subcarrier, the (i+6th)th subcarrier, the (i+11th)th subcarrier, and the (i+12th)th subcarrier.
  • i is a positive integer.
  • the DMRS corresponding to the same antenna port eg, antenna port 0 and antenna port 1, or corresponding to antenna port 2 and antenna port 3, or corresponding to antenna port 4 and antenna port 5
  • the channels separated by 2 or several subcarriers are approximately considered to be the same.
  • OCC orthogonal cover codes
  • Fig. 11(c) shows a schematic diagram of a channel estimation situation.
  • a rectangular box represents an RE.
  • a solid-line rectangular box represents the DMRS corresponding to antenna port 0 and antenna port 1
  • a dotted rectangular box represents the DMRS corresponding to antenna port 2 and antenna port 3.
  • SCS is 960kHz.
  • the solid curve represents the real frequency response.
  • the terminal device performs an interpolation operation according to the frequency responses corresponding to frequency A and frequency B respectively to obtain a linear interpolation operation result, as shown by the dotted line between node A and node B in Figure 11(c).
  • the frequency responses corresponding to the frequencies of the DMRSs corresponding to no antenna port 0 and antenna port 1 depend on the result of the linear interpolation operation.
  • node C and node D correspond to the same frequency.
  • Node C represents the frequency response determined based on the results of the linear interpolation operation, while node D represents the actual frequency response. In this way, there is a deviation between the estimated frequency response and the real frequency response, that is, the accuracy of the channel estimation result is poor.
  • the channels separated by 2 or several subcarriers are quite different and cannot be approximately considered to be the same.
  • an interpolation operation is performed mathematically to obtain the channel estimation result.
  • the accuracy of the channel estimation result is poor, which affects the network transmission performance.
  • the embodiments of the present application provide another communication method for resource scheduling, which is applied to a DMRS transmission process in resource scheduling.
  • the communication method for resource scheduling includes the following steps:
  • the network device sends the DCI to the terminal device.
  • the terminal device receives the DCI from the network device.
  • DCI indicates the time domain resource used for data transmission.
  • the communication method for resource scheduling in this embodiment of the present application executes S1202 and S1204.
  • the communication method for resource scheduling in this embodiment of the present application executes S1205 and S1206.
  • the network device sends a first reference signal to the terminal device.
  • the terminal device receives the first reference signal from the network device.
  • the first reference signal includes at least two DMRSs. At least two DMRSs correspond to the same antenna port, and the at least two DMRSs are consecutive in the time domain and located on different subcarriers in the frequency domain.
  • the terminal device uses the first reference signal to demodulate the time domain resource indicated by the DCI.
  • the terminal device sends a third reference signal to the network device.
  • the network device receives the third reference signal from the terminal device.
  • the third reference signal includes at least two DMRSs. At least two DMRSs correspond to the same antenna port, and the at least two DMRSs are consecutive in the time domain and located on different subcarriers in the frequency domain.
  • the network device uses the third reference signal to demodulate the time domain resource indicated by the DCI.
  • the resource indicated by the DCI is demodulated by using the DMRS in the first reference signal.
  • at least two DMRSs in the first reference signal correspond to the same antenna port.
  • the above "at least two DMRSs" are located in different subcarriers. For example, there are DMRSs corresponding to the same port on the next subcarrier of adjacent symbols, thereby effectively increasing the density of DMRSs in the frequency domain, which is beneficial to Improve the accuracy of linear interpolation operations and the accuracy of channel estimation results, thereby improving the spectral efficiency of transmission.
  • the communication method for resource scheduling in the embodiment of the present application improves the DMRS per unit time signal energy, which is beneficial to improve the decoding speed and the accuracy of channel estimation, and improve the spectral efficiency of transmission.
  • the network device sends the DCI to the terminal device.
  • the terminal device receives the DCI from the network device.
  • DCI indicates the time domain resource used for data transmission.
  • the DCI indicates the time domain resources in the time slot group used for downlink data transmission, that is, the time domain resources of the PDSCH.
  • the DCI indicates a time domain resource used for uplink data transmission in the time slot group, that is, a PUSCH time domain resource.
  • the DCI indicates a time domain resource used for data transmission in the time slot group.
  • the DCI indicates a time domain resource used for data transmission in the time slot group.
  • the network device sends a first reference signal to the terminal device.
  • the terminal device receives the first reference signal from the network device.
  • the first reference signal includes at least two DMRSs.
  • the first reference signal may also be replaced by the first DMRS set or the first DMRS group.
  • the DMRS located on the same symbol may correspond to the same antenna port, or may correspond to different multiple antenna ports.
  • the above-mentioned at least two DMRSs include a first DMRS and a second DMRS.
  • the mapping conditions of the above-mentioned "at least two DMRSs" in the time domain and the frequency domain are described:
  • the first DMRS and the second DMRS are consecutive in the time domain.
  • FIG. 13( a ) shows a schematic diagram of the position of the first reference signal in the time domain.
  • one block represents one symbol. Every 14 symbols constitute a slot, as shown by the dotted line in Fig. 13(a).
  • a solid line box indicates that the symbol is used to transmit PDCCH
  • a dotted line box indicates that the symbol is used to transmit data
  • a diagonally filled box indicates that the symbol is used to carry DMRS.
  • the symbol carrying the DMRS is the third symbol in each time slot, and the DMRS in one time slot is used to demodulate the DMRS.
  • the resources used for data transmission on the time slot, and each time slot is continuous in the time domain.
  • the first reference signal includes 4 DMRSs, and the 4 DMRSs are consecutive in the time domain, as shown in FIG. 13( a ).
  • the distribution of the first reference signal in the time domain shown in FIG. 12( c ) is the same as the distribution of the first reference signal in the time domain shown in FIG. 13( a ).
  • the first DMRS and the second DMRS are located on different subcarriers in the frequency domain.
  • FIG. 13(b) shows a schematic diagram of the location of a first reference signal.
  • a vertically placed rectangular box represents a symbol.
  • the DMRS is carried on symbol a, symbol b, symbol c and symbol d.
  • a horizontally placed rectangular box represents an RE.
  • a rectangular box placed horizontally without slanted lines indicates that the RE does not carry DMRS, and a rectangular box filled with slashes placed horizontally indicates that the DMRS borne by the RE corresponds to antenna port 0.
  • the DMRS corresponding to antenna port 0 are distributed in the (i+1)th subcarrier, the (i+3)th subcarrier, the (i+5)th subcarrier and the (i+7) subcarriers.
  • the DMRS corresponding to antenna port 0 are distributed on the ith subcarrier, the (i+2)th subcarrier, the (i+4)th subcarrier, and the (i+6)th subcarrier.
  • the DMRS corresponding to antenna port 0 are distributed in the (i+1)th subcarrier, the (i+3th)th subcarrier, the (i+5th)th subcarrier and the (i+7th)th subcarrier.
  • the DMRS corresponding to antenna port 0 are distributed on the i-th sub-carrier, the (i+2)-th sub-carrier, the (i+4)-th sub-carrier, and the (i+6)-th sub-carrier.
  • i is a positive integer.
  • FIG. 13( c ) shows a schematic diagram of the location of a first reference signal.
  • the DMRS corresponding to antenna port 0 are distributed in the (i+2)th subcarrier, the (i+3)th subcarrier, the (i+6)th subcarrier and the (i+6th)th subcarrier i+7) subcarriers.
  • the DMRS corresponding to antenna port 0 are distributed on the i-th sub-carrier, the (i+1)-th sub-carrier, the (i+4)-th sub-carrier, and the (i+5)-th sub-carrier.
  • the DMRS corresponding to antenna port 0 are distributed on the (i+2)th subcarrier, the (i+3th)th subcarrier, the (i+6th)th subcarrier and the (i+7th)th subcarrier.
  • the DMRS corresponding to antenna port 0 are distributed on the ith subcarrier, the (i+1)th subcarrier, the (i+4)th subcarrier, and the (i+5)th subcarrier.
  • i is a positive integer.
  • the first DMRS is the DMRS indicated by the character 'A'
  • the second DMRS is the DMRS indicated by the character 'B'" as an example
  • the first DMRS and the second DMRS are located on different subcarriers.
  • the first DMRS and the second DMRS corresponding to the same antenna port are continuous in the time domain, and are located in different subcarriers in the frequency domain, as shown in Figure 13(a) , Figure 13(b) and Figure 13(c).
  • the first reference signal further includes a third DMRS.
  • the antenna ports corresponding to the third DMRS and the first DMRS are different.
  • the above-mentioned “DMRS corresponding to multiple antenna ports” is described in the time domain and the frequency domain.
  • the first DMRS and the third DMRS are the same in the time domain.
  • FIG. 13(d) shows a schematic diagram of the location of a first reference signal.
  • the meaning of the vertically placed rectangular frame is the same as that in FIG. 13( b ), which will not be repeated here.
  • the DMRS is carried on symbol a, symbol b, symbol c, and symbol d.
  • a horizontally placed rectangular box represents an RE.
  • a rectangular box filled with a horizontal pattern indicates that the RE is used to carry DMRS, and if the patterns filled in the two rectangular boxes are different, it indicates that the antenna ports corresponding to the DMRS carried by the two REs are different.
  • FIG. 13(d) shows a schematic diagram of the location of a first reference signal.
  • the meaning of the vertically placed rectangular frame is the same as that in FIG. 13( b ), which will not be repeated here.
  • the DMRS is carried on symbol a, symbol b, symbol c, and symbol d.
  • a horizontally placed rectangular box represents an RE.
  • a rectangular box filled with a horizontal pattern
  • the DMRS corresponding to antenna port 0 are distributed in the (i+1)th subcarrier, the (i+3)th subcarrier, and the (i+5th)th subcarrier.
  • subcarriers and the (i+7)th subcarrier, the DMRS corresponding to antenna port 1 are distributed in the ith subcarrier, the (i+2)th subcarrier, the (i+4th)th subcarrier and the (i+6th)th subcarrier carrier.
  • the DMRS corresponding to antenna port 0 are distributed on the ith subcarrier, the (i+2)th subcarrier, the (i+4)th subcarrier, and the (i+6)th subcarrier, corresponding to the
  • the DMRS is distributed on the (i+1)th subcarrier, the (i+3)th subcarrier, the (i+5th)th subcarrier, and the (i+7)th subcarrier.
  • the DMRS mapping status on the symbol c is the same as the DMRS mapping status on the symbol a
  • the DMRS mapping status on the symbol d is the same as the DMRS mapping status on the symbol b, which is not repeated here.
  • i is a positive integer.
  • the first DMRS is the DMRS indicated by the character 'A'
  • the second DMRS is the DMRS indicated by the character 'B'
  • the third DMRS is the DMRS indicated by the character 'C'" as an example
  • the first DMRS and the third DMRS are consecutive in the time domain.
  • FIG. 13(e) shows a schematic diagram of the location of a first reference signal.
  • the meaning of the vertically placed rectangular frame is the same as that of FIG. 13(b)
  • the meaning of the horizontally placed rectangular frame is the same as that of FIG. 13(b), which will not be repeated here.
  • Fig. 13(e) shows a schematic diagram of the location of a first reference signal.
  • the DMRS corresponding to antenna port 0 are distributed in the (i+2)th subcarrier, the (i+3th)th subcarrier, the (i+6th)th subcarrier and the (i+7) subcarriers, the DMRS corresponding to antenna port 1 are distributed in the ith subcarrier, the (i+1)th subcarrier, the (i+4)th subcarrier, and the (i+5)th subcarrier.
  • the DMRS corresponding to antenna port 0 are distributed in the ith subcarrier, the (i+1)th subcarrier, the (i+4)th subcarrier and the (i+5)th subcarrier, corresponding to the
  • the DMRS is distributed on the (i+2)th subcarrier, the (i+3)th subcarrier, the (i+6th)th subcarrier, and the (i+7)th subcarrier.
  • the DMRS mapping status on the symbol c is the same as the DMRS mapping status on the symbol a
  • the DMRS mapping status on the symbol d is the same as the DMRS mapping status on the symbol b, which is not repeated here.
  • i is a positive integer.
  • the first DMRS is the DMRS indicated by the character 'A'
  • the second DMRS is the DMRS indicated by the character 'B'
  • the third DMRS is the DMRS indicated by the character 'C'" as an example
  • the first DMRS and the third DMRS are consecutive in the time domain.
  • the second DMRS and the third DMRS are located on the same subcarrier in the frequency domain.
  • the second DMRS is the DMRS indicated by the character 'B'
  • the third DMRS is the DMRS indicated by the character 'C'
  • the second DMRS and the third DMRS are located on the same subcarrier in the frequency domain.
  • the second DMRS is the DMRS indicated by the character 'B'
  • the third DMRS is the DMRS indicated by the character 'C'
  • the second DMRS and the third DMRS are located on the same subcarrier in the frequency domain.
  • At least two DMRSs in the first reference signal are bundled and aggregated, which improves the DMRS signal energy per unit time, thereby improving the accuracy of channel estimation and improving the spectral efficiency of transmission.
  • In the frequency domain at least two DMRSs in the first reference signal are cyclically shifted in units of subcarriers. For example, there are DMRSs corresponding to the same port on the next subcarrier of an adjacent symbol, thereby effectively improving the frequency.
  • the density of the domain DMRS is beneficial to improve the accuracy of the linear interpolation operation and the accuracy of the channel estimation result, thereby improving the spectral efficiency of transmission.
  • the antenna port corresponding to the second DMRS and the antenna port corresponding to the third DMRS are determined based on the value of N and the number of symbols carrying the target DMRS. of.
  • the value of N is the number of antenna ports corresponding to the DMRS on the symbol where the second DMRS is located
  • the target DMRS is a continuous group of DMRSs in the time domain in the first reference signal
  • the target DMRS includes the first DMRS and the second DMRS.
  • FIG. 13( f ) shows a schematic diagram of the location of a first reference signal.
  • the meaning represented by the vertically placed rectangular frame is the same as that in FIG. 13( b ), which will not be repeated here.
  • the DMRS is carried on symbol a and symbol b.
  • a horizontally placed rectangular box represents an RE.
  • a horizontally placed pattern-filled rectangle indicates that the RE carries DMRS.
  • the patterns filled in the two rectangular boxes are different, it means that the antenna ports corresponding to the DMRS carried by the two REs are different.
  • FIG. 13( f ) Exemplarily, taking four antenna ports as an example, rectangular boxes filled with different patterns represent DMRSs corresponding to different antenna ports, as shown in FIG. 13( f ).
  • the DMRS corresponding to antenna port 0 is distributed on the (i+3)th subcarrier and the (i+7)th subcarrier, and the DMRS corresponding to antenna port 1 is distributed.
  • the DMRS corresponding to the antenna port 2 are distributed in the (i+1)th subcarrier and the (i+5)th subcarrier, corresponding to the (i+5)th subcarrier of the antenna port 3.
  • the DMRS is distributed on the ith subcarrier and the (i+4)th subcarrier.
  • the DMRS corresponding to antenna port 0 is distributed in the (i+1)th subcarrier and the (i+5)th subcarrier
  • the DMRS corresponding to antenna port 1 is distributed in the ith subcarrier and (i+4)th subcarrier subcarriers
  • the DMRS corresponding to antenna port 2 are distributed in the (i+3)th subcarrier and the (i+7)th subcarrier
  • the DMRS corresponding to antenna port 3 are distributed in the (i+2)th subcarrier and (i+)th subcarrier 6) subcarriers.
  • the DMRS located on the same symbol corresponds to N antenna ports
  • every N subcarriers is a group, and on one symbol, the corresponding antenna port X (such as antenna port 0 to antenna port (N-1 ), the DMRS of any antenna port) is carried on the subcarrier whose index is (N*k), and on the adjacent symbol of this symbol, the DMRS corresponding to the antenna port X is carried on the subcarrier whose index is (N*k+m). subcarrier.
  • m satisfies the following formula:
  • m represents the number of cyclically shifted subcarriers
  • N represents the number of antenna ports corresponding to the DMRS on the same symbol
  • P represents the number of symbols carrying the target DMRS.
  • the target DMRS refers to a group of DMRSs in the first reference signal that are continuous in the time domain.
  • the value of N is 4, and the value of P is 2.
  • the value of m is 2.
  • the DMRS corresponding to antenna port 2 on symbol a is distributed on the (i+1)th subcarrier and the (i+5)th subcarrier, and on symbol b
  • the DMRS corresponding to antenna port 2 are distributed on the (i+3)th subcarrier and the (i+7)th subcarrier.
  • the corresponding antenna port is determined based on the value of N and the number of symbols carrying the target DMRS, which is beneficial to improve the “DMRS corresponding to the same antenna port” in the frequency domain. In order to improve the accuracy of the linear interpolation operation and the accuracy of the channel estimation results.
  • the number of symbols carrying the target DMRS may be the same as or different from the number of time slots in a time slot group.
  • the network device does not need to transmit additional instructions to indicate the number of DMRS in the first reference signal to the terminal device, saving signaling overhead .
  • Specific examples corresponding to this situation can be seen in Fig. 13(b), Fig. 13(c), Fig. 13(d) and Fig. 13(e). If one slot group includes N slots, the first reference signal includes N DMRSs.
  • the first 2*N symbols are used to transmit the PDCCH, and the first reference signal is N consecutive symbols starting from the (2*N+1)th symbol.
  • the network device transmits an instruction to the terminal device to indicate the number of DMRSs in the first reference signal for the terminal device. In this way, when the channel condition is good, the number of DMRSs in the first reference signal can be reduced to use more resources for data transmission.
  • the first reference signal includes two DMRSs.
  • the number of DMRSs in the first reference signal can be increased to improve the channel estimation accuracy.
  • the first reference signal includes six DMRSs.
  • the first 2*N symbols are used to transmit the PDCCH, and the first reference signal is Z consecutive symbols starting from the (2*N+1)th symbol.
  • the number of DMRSs in the first reference signal is indicated by the above instruction.
  • N is less than P.
  • the mapping conditions of the first reference signal in the time domain and the frequency domain still satisfy the above description.
  • the value of N is 2 and the value of P is 4, that is, the schematic diagram of the position of the first reference signal shown in FIG. 13( d ).
  • the value of N is 3 and the value of P is 4, that is, the schematic diagram of the position of the first reference signal shown in FIG. 13(h).
  • the meaning represented by the vertically placed rectangular frame is the same as that in Fig. 13(b), and will not be repeated here.
  • the DMRS is carried on symbol a, symbol b, symbol c, and symbol d.
  • a horizontally placed rectangular box represents an RE.
  • a horizontally placed pattern-filled rectangle indicates that the RE carries DMRS.
  • the patterns filled in the two rectangular boxes are different, it means that the antenna ports corresponding to the DMRS carried by the two REs are different.
  • rectangular boxes filled with different patterns represent DMRSs corresponding to different antenna ports, as shown in FIG. 13(h).
  • FIG. 13(h) Exemplarily, in FIG.
  • the DMRS corresponding to antenna port 0 is distributed on the (i+2)th subcarrier and the (i+5)th subcarrier, and the DMRS corresponding to antenna port 1 is distributed.
  • the DMRS corresponding to antenna port 2 are distributed on the ith subcarrier and the (i+3)th subcarrier.
  • the DMRS corresponding to antenna port 0 is distributed on the ith subcarrier and the (i+3)th subcarrier
  • the DMRS corresponding to antenna port 1 is distributed on the (i+2)th subcarrier and the (i+5)th subcarrier subcarriers
  • the DMRS corresponding to antenna port 2 are distributed in the (i+1)th subcarrier and the (i+4)th subcarrier.
  • the DMRS corresponding to antenna port 0 is distributed on the (i+1)th subcarrier and the (i+4)th subcarrier
  • the DMRS corresponding to antenna port 1 is distributed on the ith subcarrier and the (i+3)th subcarrier subcarriers
  • the DMRS corresponding to antenna port 2 are distributed in the (i+2)th subcarrier and the (i+5)th subcarrier.
  • the DMRS mapping status on the symbol d is the same as the DMRS mapping status on the symbol a, which is not repeated here.
  • N is greater than P.
  • the mapping conditions of the first reference signal in the time domain and the frequency domain still satisfy the above description.
  • the value of N is 4 and the value of P is 3, that is, the schematic diagram of the position of the first reference signal shown in FIG. 13( i ).
  • the meaning represented by the vertically placed rectangular frame is the same as that in Fig. 13(b), and will not be repeated here.
  • the DMRS is carried on symbol a, symbol b and symbol c.
  • a horizontally placed rectangular box represents an RE.
  • a horizontally placed pattern-filled rectangle indicates that the RE carries DMRS. Moreover, if the patterns filled in the two rectangular boxes are different, it means that the antenna ports corresponding to the DMRS carried by the two REs are different. Exemplarily, taking four antenna ports as an example, rectangles filled with different patterns represent DMRSs corresponding to different antenna ports, as shown in FIG. 13(i). Exemplarily, in FIG. 13(i), on symbol a, the DMRS corresponding to antenna port 0 is distributed on the (i+1)th subcarrier and the (i+5)th subcarrier, and the DMRS corresponding to antenna port 1 is distributed.
  • the DMRS corresponding to antenna port 2 is distributed on the (i+3)th subcarrier, and the DMRS corresponding to antenna port 3 is distributed on the (i+2)th subcarrier.
  • the DMRS corresponding to antenna port 0 is distributed on the ith subcarrier and the (i+4)th subcarrier, the DMRS corresponding to antenna port 1 is distributed on the (i+3)th subcarrier, and the DMRS corresponding to antenna port 2 is distributed on the (i+3)th subcarrier.
  • the DMRS corresponding to antenna port 3 are distributed on the (i+1)th subcarrier and the (i+5)th subcarrier.
  • the DMRS corresponding to antenna port 0 is distributed on the (i+3)th subcarrier
  • the DMRS corresponding to antenna port 1 is distributed on the (i+2)th subcarrier
  • the DMRS corresponding to antenna port 2 is distributed on the (i+2)th subcarrier +1) subcarriers and (i+5)th subcarriers
  • the DMRS corresponding to antenna port 3 are distributed on the ith subcarrier and the (i+4)th subcarrier.
  • the first reference signal is transmitted before the resource indicated by the DCI.
  • the terminal device first executes S1202, and then executes S1204, as shown in FIG. 13(a) to FIG. 13(i). In this way, the terminal device can quickly obtain the channel estimation result to demodulate the resource indicated by the DCI.
  • the communication method for resource scheduling in this embodiment of the present application further includes S1203:
  • the network device sends a second reference signal to the terminal device.
  • the terminal device receives the second reference signal from the network device.
  • the second reference signal includes at least two DMRSs, the at least two DMRSs correspond to the same antenna port, and the at least two DMRSs are consecutive in the time domain and located in different subcarriers in the frequency domain. That is to say, for the mapping status of each DMRS in the second reference signal in the time domain and the frequency domain, reference may be made to the relevant description of the first reference signal, and details are not repeated here.
  • the second reference signal is transmitted after the first part of the resources indicated by the DCI and before the second part of the resources indicated by the DCI.
  • Fig. 14(a) shows a schematic diagram of the location of a second reference signal.
  • the meaning represented by a block is detailed in the relevant description in Fig. 13(a), which is not repeated here.
  • the symbols carrying the DMRS are the 3rd symbol and the 12th symbol in the time slot, as shown in Fig. 14(a).
  • DMRS set 2 includes 4 DMRSs, and the 4 DMRSs are consecutive in the time domain.
  • DMRS set 1 precedes the resource indicated by the DCI.
  • the DMRS set 2 is after the first part of the resources indicated by the DCI and before the second part of the resources indicated by the DCI, as shown in FIG. 14( a ).
  • the first reference signal is DMRS set 1
  • the second reference signal is DMRS set 2.
  • the number of symbols corresponding to the first part of the resource indicated by the DCI is determined according to the number of time slots in a time slot group.
  • the number of symbols corresponding to the first part of the resource indicated by the DCI is (P*8).
  • P represents the number of DMRSs in the first reference signal.
  • Fig. 14(b) shows a schematic diagram of the location of a second reference signal.
  • the meaning represented by a block can be found in the relevant description in Fig. 13(a), which will not be repeated here.
  • the symbols carrying the DMRS are the 3rd symbol, the 8th symbol and the 12th symbol in the time slot, as shown in FIG. 14(b).
  • the second reference signal includes 4 DMRSs, and the 4 DMRSs are consecutive in the time domain.
  • DMRS set 1 precedes the resource indicated by the DCI.
  • DMRS set 2 is after the 1st part of resources indicated by the DCI, and before the 2nd and 3rd resources indicated by the DCI.
  • the DMRS set 3 is after the first part of the resources and the second part of the resources indicated by the DCI, and before the third part of the resources indicated by the DCI, as shown in Fig. 14(b).
  • the first reference signal is DMRS set 1
  • the second reference signal is DMRS set 2 or DMRS set 3.
  • the number of symbols corresponding to the first part of resources indicated by DCI is (P*4)
  • P*3 the number of symbols corresponding to the second part of resources indicated by DCI
  • FIG. 14( c ) shows a schematic diagram of the location of a second reference signal.
  • the symbols carrying the DMRS are the 3rd symbol, the 6th symbol, the 9th symbol and the 12th symbol in the time slot, as shown in FIG. 14(c).
  • the second reference signal includes 4 DMRSs, and the 4 DMRSs are consecutive in the time domain.
  • DMRS set 1 precedes the resource indicated by the DCI.
  • the DMRS set 2 follows the part 1 resources indicated by the DCI, and precedes the part 2 resources, the part 3 resources and the part 4 resources indicated by the DCI.
  • the DMRS set 3 follows the part 1 resources and the part 2 resources indicated by the DCI, and precedes the part 3 resources and the part 4 resources indicated by the DCI.
  • the DMRS set 4 follows the part 1 resources, the part 2 resources and the part 3 resources indicated by the DCI, and precedes the part 4 resources indicated by the DCI.
  • the first reference signal is DMRS set 1
  • the second reference signal is DMRS set 2, or DMRS set 3, or DMRS set 4.
  • the number of symbols corresponding to the first part resource, the second part resource and the third part resource indicated by the DCI is (P*2) respectively.
  • P represents the number of DMRSs in the first reference signal.
  • the terminal device uses the first reference signal to demodulate the time domain resource indicated by the DCI.
  • the terminal device uses the first reference signal to demodulate the resource indicated by the DCI.
  • the terminal device demodulates "Part 1" resources, "Part 2" resources, “Part 3” resources and "Part 4" resources based on the first reference signal.
  • the DMRS on one symbol demodulates a part of the resources indicated by the DCI
  • the DMRS on different symbols demodulates different parts of the resources indicated by the DCI.
  • the resource distribution of PDSCH after bundling is as follows: the PDSCH resources in the first time slot before bundling are the first part of resources after bundling, and the first part of resources before bundling
  • the PDSCH resources in 2 time slots are the second part of resources after bundling
  • the PDSCH resources in the third time slot before bundling are the third part of resources after bundling
  • the fourth part before bundling The resources of the PDSCH in the time slot are the bundled fourth part of resources, as shown by the dashed diagonal line in Fig. 13(a).
  • the DMRS on the first symbol in the first reference signal demodulates the first part of resources indicated by DCI
  • the DMRS on the second symbol in the first reference signal demodulates the second part of resources indicated by DCI
  • the first reference signal The DMRS on the 3rd symbol in the DMRS demodulates the 3rd part of the resources indicated by the DCI
  • the DMRS on the 4th symbol in the first reference signal demodulates the 4th part of the resources indicated by the DCI, as shown in Figure 13(a) Curved arrows are shown.
  • one time slot uses multiple symbols to carry the DMRS.
  • the terminal device also executes S1204.
  • S1204 is specifically as follows: the terminal device uses the first reference signal and the second reference signal to demodulate the resource indicated by the DCI.
  • the terminal device uses the first reference signal and the second reference signal to demodulate the resource indicated by the DCI.
  • the DMRS on one symbol demodulates a part of the resources indicated by the DCI
  • the DMRS on different symbols demodulates different parts of the resources indicated by the DCI.
  • the first DMRS in DMRS set 1 demodulates the first and second symbols in the first part of resources indicated by DCI
  • the second DMRS in DMRS set 1 demodulates The 3rd and 4th symbols in the 1st part of resources indicated by DCI
  • the 3rd DMRS in DMRS set 1 demodulates the 5th and 6th symbols in the 1st part of resources indicated by DCI
  • DMRS The 4th DMRS in set 1 demodulates the 7th symbol and the 8th symbol in the 1st part of resources indicated by DCI, as shown by the curved arrows in Fig. 14(c).
  • the demodulated resources of each DMRS in the DMRS set 2 are shown in FIG. 14(c), which will not be repeated here.
  • DMRS set 1 demodulates the first part of resources indicated by DCI
  • DMRS set 2 demodulates the second part of resources indicated by DCI
  • DMRS set 3 demodulates the third part of resources indicated by DCI
  • DMRS set 3 demodulates the third part of resources indicated by DCI.
  • Set 4 demodulates the fourth part of the resource indicated by the DCI, as shown by the curved arrow in Fig. 14(d).
  • the terminal device sends a third reference signal to the network device.
  • the network device receives the third reference signal from the terminal device.
  • the network device uses the third reference signal to demodulate the time domain resource indicated by the DCI.
  • the third reference signal is transmitted before the resource indicated by the DCI.
  • the terminal device first executes S1205, and then executes S1206.
  • the communication method for resource scheduling in the embodiment of the present application improves the DMRS per unit time signal energy.
  • the specific analysis process of "DMRS signal energy" is as follows:
  • a rectangular box represents a symbol
  • a solid-line rectangular box represents a symbol used for transmitting PDCCH
  • a rectangle filled with diagonal lines represents a symbol used for transmitting DMRS
  • a dotted-line rectangular box represents a symbol used for transmitting DMRS.
  • the signal energy of the DMRS is small, which is not conducive to fast decoding.
  • SCS is 960kHz
  • DMRS bundling at least two DMRSs in the first reference signal are consecutive in the time domain, as in Fig. 14(e), in the time domain, four " The duration of a symbol with an SCS of 960 kHz” is the same as the duration of a symbol with an SCS of 240 kHz, which accordingly increases the signal energy of the DMRS per unit time.
  • the communication method for resource scheduling in the embodiment of the present application is also applicable to double-symbol DMRS (double-symbol DMRS).
  • double-symbol DMRS double-symbol DMRS
  • the dual-symbol DMRS refers to that the DMRS corresponding to the same antenna port spans two symbols in the time domain, and occupies one or two consecutive subcarriers in the frequency domain.
  • time domain OCC ⁇ 1, 1 ⁇ and ⁇ 1, -1 ⁇ are introduced to increase the number of orthogonal antenna ports.
  • the number of available antenna ports can be 8 or 12.
  • the first type of DMRS is a DMRS pattern based on interleaved frequency domain multiplexing (IFDM).
  • the DMRS pattern can support a maximum of 8 antenna ports on two adjacent symbols, as shown in Figure 15(a).
  • Figure 15(a) shows two code-division multiplexing groups (CDM groups).
  • CDM group #0 includes p1000, p1001, p1004, and p1005, and p1000, p1001, p1004, and p1005 occupy the same time-frequency resources, and p1000 and p1001 use different codes in the frequency domain.
  • CDM group #1 includes p1002, p1003, p1006 and p1007.
  • the CSs used in the frequency domain for p1002 and p1003 are different, and the OCCs used in the time domain are the same;
  • the OCC used in the time domain is the same and different from the codes used in the time domain for P1002 and P1003.
  • All ports in the two groups of CDM are mapped on the same time-frequency resource, and are distinguished from each other by different time-domain or frequency-domain codes.
  • the DMRS corresponding to each antenna port is shown in Figure 15(b). Among them, "+” means "+1", and "-” means "-1".
  • the second type of DMRS is a DMRS pattern based on a frequency domain orthogonal covering code (FD-OCC).
  • the DMRS pattern can support up to 12 antenna ports on 2 adjacent symbols, as shown in Figure 15(c).
  • Figure 15(c) shows 3 groups of CDMs.
  • CDM group #0 includes p1000, p1001, p1006, and p1007
  • CDM group #1 includes p1002, p1003, p1008, and p1009
  • CDM group #2 includes p1004, p1005, p1010, and p1011.
  • p1000, p1001, p1006, and p1007 occupy the same time-frequency resources, but use different time-domain or frequency-domain OCCs.
  • p1000 and p1001 are distinguished by the OCC in the frequency domain, while the time domain OCC is the same, that is, the frequency domain OCC used by p1000 is ⁇ 1, 1 ⁇ , the frequency domain OCC used by p1001 is ⁇ 1, -1 ⁇ , and the frequency domain OCC used by p1000 is ⁇ 1, -1 ⁇ . and p1001 both use an OCC of ⁇ 1, 1 ⁇ in the time domain.
  • the p1006 and p1007 are distinguished by the OCC in the frequency domain, while the time domain OCC is the same, that is, the frequency domain OCC used by p1006 is ⁇ 1, 1 ⁇ , the frequency domain OCC used by p1007 is ⁇ 1, -1 ⁇ , and the frequency domain OCC used by p1006 and p1006 is ⁇ 1, 1 ⁇ .
  • the OCC used by p1007 in the time domain is ⁇ 1, -1 ⁇ .
  • the 4 antenna ports in other CDMs are the same.
  • p1002 and p1003 use different frequency domain OCC, but use the same time domain OCC
  • p1008 and p1009 use different frequency domain OCC
  • the same time domain OCC is also used.
  • the time domain OCC for p1002 and p1003 is different from the time domain OCC for p1008 and p1009.
  • p1004 and p1005 use different frequency domain OCCs while using the same time domain OCC
  • p1010 and p1011 use different frequency domain OCCs and also use the same time domain OCC.
  • the time domain OCC for p1004 and p1005 is different from the time domain OCC for p1010 and p1011. All ports in the three groups of CDM are mapped on the same time-frequency resource, and are distinguished from each other by different time-domain or frequency-domain codes.
  • the DMRS corresponding to each antenna port is shown in Figure 15(d).
  • FIG. 16(a) shows a schematic diagram of a first reference signal.
  • Figure 16(a) shows the DMRS corresponding to the eight antenna ports.
  • the eight antenna ports are respectively recorded as p1000, p1001, p1002, p1003, p1004, p1005, p1006, and p1007.
  • the symbols where the DMRS corresponding to each antenna port is located are denoted as symbol 1 and symbol 2, respectively.
  • the DMRS corresponding to the eight antenna ports are introduced:
  • the symbol where the first DMRS corresponding to p1000 is located is marked as symbol 1, and the subcarrier where the first DMRS corresponding to p1000 is located is marked as the (i+4k)th subcarrier.
  • the symbol where the second DMRS corresponding to p1000 is located is marked as symbol 2, and the subcarrier where the second DMRS corresponding to p1000 is located is marked as the (i+4k+2)th subcarrier.
  • the symbol where the seventh DMRS corresponding to p1001 is located is marked as symbol 1, and the subcarrier where the seventh DMRS corresponding to p1001 is located is marked as the (i+4k)th subcarrier.
  • the symbol where the eighth DMRS corresponding to p1001 is located is marked as symbol 2, and the subcarrier where the eighth DMRS corresponding to p1001 is located is marked as the (i+4k+2)th subcarrier. That is to say, the DMRS corresponding to p1000 and the DMRS corresponding to p1001 occupy the same time-frequency resources, but the OCC used by the DMRS corresponding to p1000 is different from the OCC used by the DMRS corresponding to p1001, as shown in Figure 16(a), “+” and The distribution law of "-" on the RE corresponding to p1000 is different from that on the RE corresponding to p1001.
  • the symbol where the fifth DMRS corresponding to p1002 is located is marked as symbol 1, and the subcarrier where the fifth DMRS corresponding to p1002 is located is marked as the (i+4k+1)th subcarrier.
  • the symbol where the sixth DMRS corresponding to p1002 is located is marked as symbol 2
  • the subcarrier where the sixth DMRS corresponding to p1002 is located is marked as the (i+4k+3)th subcarrier.
  • the DMRS corresponding to p1002 and the DMRS corresponding to p1003 occupy the same time-frequency resources, but the OCC used by the DMRS corresponding to p1002 is different from the OCC used by the DMRS corresponding to p1003, as shown in Figure 16(a), "+” and "-" are in The distribution law on the RE corresponding to p1002 is different from that on the RE corresponding to p1003.
  • the symbol where the fourth DMRS corresponding to p1004 is located is marked as symbol 1, and the subcarrier where the fourth DMRS corresponding to p1004 is located is marked as the (i+4k+2)th subcarrier.
  • the symbol where the third DMRS corresponding to p1004 is located is marked as symbol 2, and the subcarrier where the third DMRS corresponding to p1004 is located is marked as the (i+4k)th subcarrier.
  • the DMRS corresponding to p1004 and the DMRS corresponding to p1005 occupy the same time-frequency resources, but the OCC used by the DMRS corresponding to p1004 is different from the OCC used by the DMRS corresponding to p1005, as shown in Figure 16(a), "+” and "-" are in the The distribution law on the RE corresponding to p1004 is different from that on the RE corresponding to p1005.
  • the symbol where the tenth DMRS corresponding to p1006 is located is marked as symbol 1, and the subcarrier where the tenth DMRS corresponding to p1006 is located is marked as the (i+4k+3)th subcarrier.
  • the symbol where the ninth DMRS corresponding to p1006 is located is marked as symbol 2
  • the subcarrier where the ninth DMRS corresponding to p1006 is located is marked as the (i+4k+1)th subcarrier.
  • the DMRS corresponding to p1006 and the DMRS corresponding to p1007 occupy the same time-frequency resources, but the OCC used by the DMRS corresponding to p1006 is different from the OCC used by the DMRS corresponding to p1007, as shown in Figure 16(a), "+” and "-” in The distribution law on the RE corresponding to p1006 is different from that on the RE corresponding to p1007.
  • FIG. 16(b) shows a schematic diagram of another first reference signal.
  • the DMRS corresponding to the twelve antenna ports are shown in FIG. 16(b).
  • the twelve antenna ports are respectively recorded as p1000, p1001, p1002, p1003, p1004, p1005, p1006, p1007, p1008, p1009, p1010, and p1011.
  • the symbols where the DMRS corresponding to each antenna port is located are denoted as symbol 1 and symbol 2, respectively.
  • the DMRS corresponding to the twelve antenna ports are introduced:
  • the symbol where the first DMRS corresponding to p1000 is located is marked as symbol 1, and the subcarrier where the first DMRS corresponding to p1000 is located is marked as the (i+12k)th subcarrier and the (i+12k+1)th subcarrier.
  • the symbol where the second DMRS corresponding to p1000 is located is denoted as symbol 2, and the subcarriers where the second DMRS corresponding to p1000 is located are denoted as the (i+12k+6)th subcarrier and the (i+12k+7)th subcarrier.
  • the symbol where the seventh DMRS corresponding to p1001 is located is marked as symbol 1, and the subcarrier where the seventh DMRS corresponding to p1001 is located is marked as the (i+12k)th subcarrier and the (i+12k+1)th subcarrier.
  • the symbol where the eighth DMRS corresponding to p1001 is located is marked as symbol 2
  • the subcarrier where the eighth DMRS corresponding to p1001 is located is marked as the (i+12k+6)th subcarrier and the (i+12k+7)th subcarrier.
  • the DMRS corresponding to p1000 and the DMRS corresponding to p1001 occupy the same time-frequency resources, but the OCC used by the DMRS corresponding to p1000 is different from that used by the DMRS corresponding to p1001, as shown in Figure 16(b), "+” and The distribution law of "-" on the RE corresponding to p1000 is different from that on the RE corresponding to p1001.
  • the symbol where the fifth DMRS corresponding to p1002 is located is marked as symbol 1, and the subcarrier where the fifth DMRS corresponding to p1002 is located is marked as the (i+12k+2)th subcarrier and the (i+12k+3)th subcarrier.
  • the symbol where the sixth DMRS corresponding to p1002 is located is denoted as symbol 2, and the subcarriers where the sixth DMRS corresponding to p1002 is located are denoted as the (i+12k+8)th subcarrier and the (i+12k+9)th subcarrier.
  • the DMRS corresponding to p1002 and the DMRS corresponding to p1003 occupy the same time-frequency resources, but the OCC used by the DMRS corresponding to p1002 is different from the OCC used by the DMRS corresponding to p1003, as shown in Figure 16(b), "+" and "-" are in the The distribution law on the RE corresponding to p1002 is different from that on the RE corresponding to p1003.
  • the symbol where the eleventh DMRS corresponding to p1004 is located is marked as symbol 1, and the subcarrier where the eleventh DMRS corresponding to p1004 is located is marked as the (i+12k+4)th subcarrier and the (i+12k+5)th subcarrier.
  • the symbol where the twelfth DMRS corresponding to p1004 is located is marked as symbol 2
  • the subcarrier where the twelfth DMRS corresponding to p1004 is located is marked as the (i+12k+10)th subcarrier and the (i+12k+11)th subcarrier.
  • the DMRS corresponding to p1004 and the DMRS corresponding to p1005 occupy the same time-frequency resources, but the OCC used by the DMRS corresponding to p1004 is different from the OCC used by the DMRS corresponding to p1005, as shown in Figure 16(b), "+” and "-" are in the The distribution law on the RE corresponding to p1004 is different from that on the RE corresponding to p1005.
  • the symbol where the fourth DMRS corresponding to p1006 is located is marked as symbol 1, and the subcarrier where the fourth DMRS corresponding to p1006 is located is marked as the (i+12k+6)th subcarrier and the (i+12k+7)th subcarrier.
  • the symbol where the third DMRS corresponding to p1006 is located is denoted as symbol 2, and the subcarriers where the third DMRS corresponding to p1006 is located are denoted as the (i+12k)th subcarrier and the (i+12k+1)th subcarrier.
  • the DMRS corresponding to p1006 and the DMRS corresponding to p1007 occupy the same time-frequency resources, but the OCC used by the DMRS corresponding to p1006 is different from the OCC used by the DMRS corresponding to p1007, as shown in Figure 16(b), "+" and "-" are in The distribution law on the RE corresponding to p1006 is different from that on the RE corresponding to p1007.
  • the symbol where the tenth DMRS corresponding to p1008 is located is marked as symbol 1, and the subcarrier where the tenth DMRS corresponding to p1008 is located is marked as the (i+12k+8)th subcarrier and the (i+12k+9)th subcarrier.
  • the symbol where the ninth DMRS corresponding to p1008 is located is denoted as symbol 2, and the subcarriers where the ninth DMRS corresponding to p1008 is located are denoted as the (i+12k+2)th subcarrier and the (i+12k+3)th subcarrier.
  • the DMRS corresponding to p1008 and the DMRS corresponding to p1009 occupy the same time-frequency resources, but the OCC used by the DMRS corresponding to p1008 is different from the OCC used by the DMRS corresponding to p1009, as shown in Figure 16(b), "+” and "-" in The distribution law on the RE corresponding to p1008 is different from that on the RE corresponding to p1009.
  • the symbol where the thirteenth DMRS corresponding to p1010 is located is marked as symbol 1, and the subcarrier where the tenth DMRS corresponding to p1010 is located is marked as the (i+12k+10)th subcarrier and the (i+12k+11)th subcarrier.
  • the symbol where the fourteenth DMRS corresponding to p1010 is located is marked as symbol 2, and the subcarrier where the fourteenth DMRS corresponding to p1010 is located is marked as the (i+12k+4)th subcarrier and the (i+12k+5)th subcarrier.
  • the DMRS corresponding to p1010 and the DMRS corresponding to p1011 occupy the same time-frequency resources, but the OCC used by the DMRS corresponding to p1010 is different from the OCC used by the DMRS corresponding to p1011, as shown in Figure 16(b), "+" and "-" are in the The distribution law on the RE corresponding to p1010 is different from that on the RE corresponding to p1011.
  • the characteristics of the DMRS corresponding to the same antenna port Taking the first DMRS and the second DMRS as an example, the mapping status of the DMRS corresponding to the same antenna port in the time domain and the frequency domain is described:
  • the time domain resource units carrying the first DMRS and the second DMRS are different.
  • the first DMRS corresponding to p1000 is carried in symbol 1
  • the second DMRS corresponding to p1000 is carried in symbol 2 .
  • the DMRS corresponding to other antenna ports also meet the above-mentioned time-domain mapping characteristics.
  • the seventh DMRS corresponding to p1001 is carried in symbol 1
  • the seventh DMRS corresponding to p1001 is carried in symbol 1.
  • Eight DMRS are carried in symbol 2.
  • the DMRSs corresponding to p1002, p1003, p1004, p1005, p1006, and p1007 respectively meet the above-mentioned time-domain mapping characteristics.
  • the seventh DMRS corresponding to p1001 is carried in symbol 1
  • the eighth DMRS corresponding to p1001 is carried in symbol 2 .
  • the DMRSs corresponding to p1002, p1003, p1004, p1005, p1006, p1007, p1008, p1009, p1010, and p1011 respectively meet the above time-domain mapping characteristics. For details, see the introduction of "DMRS corresponding to twelve antenna ports".
  • the subcarriers carrying the first DMRS and the second DIMRS are different.
  • the subcarrier where the first DMRS corresponding to p1000 is located is the (i+4k)th subcarrier
  • the subcarrier where the second DMRS corresponding to p1000 is located is the (i+4k)th subcarrier.
  • i and k are positive integers. That is, on the same symbol, there is one first DMRS on every four subcarriers, and the number of subcarriers spaced between two first DMRSs is three. On the same symbol, there is one second DMRS on every four subcarriers, and the number of subcarriers spaced between two second DMRSs is three.
  • the channel estimation result when the second DMRS is used for channel estimation can be equivalent to the channel estimation result of the same subcarrier on the time-domain resource unit where the first DMRS is located, thus ensuring Accuracy of channel estimation.
  • the subcarrier where the first DMRS corresponding to p1000 is located is the (i+12k)th subcarrier and the (i+12k+1)th subcarrier, and p1000 corresponds to
  • the subcarriers on which the second DMRS of , are located are the (i+12k+6)th subcarrier and the (i+12k+7)th subcarrier.
  • i and k are positive integers. That is, on the same symbol, there is a set of first DMRSs on every 12 subcarriers.
  • the group of first DMRSs includes two first DMRSs, and the two first DMRSs are consecutive in the frequency domain.
  • the group of second DMRSs includes two second DMRSs, and the two second DMRSs are consecutive in the frequency domain. And, there are 6 subcarriers between the first DMRS and the second DMRS. Since the subcarriers where the first DMRS and the second DMRS are located are different, and the channel estimation result when the second DMRS is used for channel estimation can be equivalent to the channel estimation result of the same subcarrier on the time-domain resource unit where the first DMRS is located, thus ensuring Accuracy of channel estimation.
  • the DMRS corresponding to other antenna ports also meet the above frequency domain mapping characteristics.
  • the subcarrier where the seventh DMRS corresponding to p1001 is located is the (i+ 4k) subcarriers
  • the subcarrier where the eighth DMRS corresponding to p1001 is located is the (i+4k+2)th subcarrier.
  • the DMRS corresponding to p1002, p1003, p1004, p1005, p1006, and p1007 respectively meet the above-mentioned characteristics of frequency domain mapping.
  • the subcarriers where the seventh DMRS corresponding to p1001 is located are the (i+12k)th subcarrier and the (i+12k+1)th subcarrier, and the subcarriers corresponding to p1001 are The subcarriers where the eighth DMRS is located are the (i+12k+6)th subcarrier and the (i+12k+7)th subcarrier.
  • the DMRS corresponding to p1002, p1003, p1004, p1005, p1006, p1007, p1008, p1009, p1010, and p1011 respectively meet the above-mentioned characteristics of frequency domain mapping. For details, see the introduction of "DMRS corresponding to twelve antenna ports".
  • the first reference signal includes the third DMRS and the fourth DMRS.
  • the third DMRS and the fourth DMRS correspond to the same antenna port, and are different from the antenna ports corresponding to the first DMRS and the second DMRS.
  • the subcarriers that carry the third DMRS and the first DMRS are the same, but the time domain resource units that carry the third DMRS and the first DMRS are different.
  • the subcarriers that carry the fourth DMRS and the second DMRS are the same, but the time-domain resource units that carry the fourth DMRS and the second DMRS are different.
  • the DMRS corresponding to p1000 are respectively denoted as the first DMRS and the second DMRS.
  • the DMRS corresponding to p1004 are denoted as the third DMRS and the fourth DMRS, respectively.
  • the subcarrier where the first DMRS and the third DMRS are located is the (i+4k)th subcarrier.
  • the symbols where the first DMRS and the third DMRS are located are different. As shown in FIG.
  • the symbol where the first DMRS is located is symbol 1
  • the symbol where the third DMRS is located is symbol 2 .
  • Symbol 1 and Symbol 2 are continuous in the time domain. That is to say, for the first DMRS and the third DMRS on the same subcarrier, the first DMRS and the third DMRS occupy different time-domain resource units, and can be used to transmit DMRSs of different antenna ports, increasing the available antennas number of ports.
  • the subcarrier where the second DMRS and the fourth DMRS are located is the (i+4k+2)th subcarrier.
  • the symbols where the second DMRS and the fourth DMRS are located are different.
  • the symbol where the second DMRS is located is symbol 2
  • the symbol where the fourth DMRS is located is symbol 1 .
  • Symbol 1 and Symbol 2 are continuous in the time domain.
  • the second DMRS and the fourth DMRS occupy different time-domain resource units and can be used to transmit DMRSs of different antenna ports, increasing the available antennas number of ports.
  • the DMRS corresponding to p1000 are respectively denoted as the first DMRS and the second DMRS.
  • the DMRS corresponding to p1006 are denoted as the third DMRS and the fourth DMRS, respectively.
  • the subcarriers where the first DMRS and the third DMRS are located are the (i+12k)th subcarrier and the (i+12k+1)th subcarrier.
  • the symbols where the first DMRS and the third DMRS are located are different. As shown in FIG. 16( b ), the symbol where the first DMRS is located is symbol 1, and the symbol where the third DMRS is located is symbol 2.
  • Symbol 1 and Symbol 2 are continuous in the time domain.
  • the subcarriers where the second DMRS and the fourth DMRS are located are the (i+12k+6)th subcarrier and the (i+12k+7)th subcarrier.
  • the symbols where the second DMRS and the fourth DMRS are located are different. As shown in FIG. 16( b ), the symbol where the second DMRS is located is symbol 2, and the symbol where the fourth DMRS is located is symbol 1. Symbol 1 and Symbol 2 are continuous in the time domain.
  • the DMRS corresponding to other antenna ports also meet the above time-frequency mapping characteristics.
  • the DMRS corresponding to p1002 and p1006 also meet the above time division characteristics.
  • the DMRS corresponding to p1002 and p1008 also meet the above time division characteristics
  • the DMRS corresponding to p1004 and p1010 also meet the above time division characteristics.
  • the DMRS corresponding to twelve antenna ports Introduction, which will not be repeated here.
  • the first reference signal includes the fifth DMRS and the sixth DMRS.
  • the fifth DMRS and the sixth DMRS correspond to the same antenna port, and are different from the antenna ports corresponding to the first DMRS and the second DMRS.
  • the time domain resource units that carry the fifth DMRS and the first DMRS are the same, but the subcarriers that carry the fifth DMRS and the first DIMRS are different.
  • the time domain resource units that carry the sixth DMRS and the second DMRS are the same, but the subcarriers that carry the sixth DMRS and the second DIMRS are different.
  • the DMRS corresponding to p1000 are respectively recorded as the first DMRS and the second DMRS
  • the DMRS corresponding to p1002 are respectively recorded as the fifth DMRS and the sixth DMRS.
  • the symbols carrying the first DMRS and the fifth DMRS are the same, but the subcarrier where the first DMRS is located is the (i+4k)th subcarrier, and the subcarrier where the fifth DMRS is located is the (i+4k+1)th subcarrier.
  • the first DMRS and the fifth DMRS occupy different subcarriers and can be used to transmit DMRSs of different antenna ports.
  • the symbols carrying the second DMRS and the sixth DMRS are the same, but the subcarrier where the second DMRS is located is the (i+4k+2)th subcarrier, and the subcarrier where the sixth DMRS is located is the (i+4k+3)th subcarrier . That is to say, for the second DMRS and the sixth DMRS on the same symbol, the second DMRS and the sixth DMRS occupy different subcarriers and can be used to transmit DMRSs of different antenna ports.
  • the DMRS corresponding to p1000 are respectively recorded as the first DMRS and the second DMRS
  • the DMRS corresponding to p1002 are respectively recorded as the fifth DMRS and the sixth DMRS.
  • the symbols carrying the first DMRS and the fifth DMRS are the same, but the subcarrier where the first DMRS is located is the (i+12k)th subcarrier and the (i+12k+1)th subcarrier, and the subcarrier where the fifth DMRS is located is the (i+12k+2) subcarriers and (i+12k+3)th subcarriers.
  • the symbols carrying the second DMRS and the sixth DMRS are the same, but the subcarriers where the second DMRS is located are the (i+12k+6)th subcarrier and the (i+12k+7)th subcarrier.
  • the subcarriers where the sixth DMRS is located are the (i+12k+8)th subcarrier and the (i+12k+9)th subcarrier.
  • the DMRS corresponding to other antenna ports also meet the above time-frequency mapping characteristics.
  • the DMRS corresponding to p1002 and p1004 also meet the above frequency division characteristics
  • the DMRS corresponding to p1002 and p1006 It also satisfies the above-mentioned characteristics of frequency division, and the DMRS corresponding to p1004 and p1006 also satisfy the above-mentioned characteristics of frequency division.
  • the introduction of "DMRS corresponding to eight antenna ports” which will not be repeated here.
  • the DMRSs that satisfy the above-mentioned characteristics of frequency division include: DMRSs corresponding to p1002 and p1004, DMRSs corresponding to p1002 and p1006, DMRSs corresponding to p1002 and p1008, DMRSs corresponding to p1002 and p1010, and p1004 DMRS corresponding to p1006, DMRS corresponding to p1004 and p1008, DMRS corresponding to p1004 and p1010, DMRS corresponding to p1006 and p1008, DMRS corresponding to p1006 and p1010, DMRS corresponding to p1008 and p1010.
  • the introduction of DMRS will not be repeated here.
  • the first reference signal includes the seventh DMRS and the eighth DMRS.
  • the seventh DMRS and the eighth DMRS correspond to the same antenna port, and are different from the antenna ports corresponding to the first DMRS and the second DMRS.
  • the time-frequency resources of the seventh DMRS and the first DMRS are the same, and the time-frequency resources of the eighth DMRS and the second DMRS are the same.
  • the OCC adopted by the seventh DMRS and the eighth DMRS is different from the OCC adopted by the first DMRS and the second DMRS.
  • the DMRS corresponding to p1000 are respectively recorded as the first DMRS and the second DMRS
  • the DMRS corresponding to p1001 are respectively recorded as the seventh DMRS. and the eighth DMRS.
  • the REs carrying the first DMRS and the seventh DMRS are the same
  • the REs carrying the second DMRS and the eighth DMRS are the same, but the OCC adopted by the first DMRS and the second DMRS is different from the OCC adopted by the seventh DMRS and the eighth DMRS.
  • the distribution rules of "+" and "-" on REs corresponding to p1000 are different from those on REs corresponding to p1001.
  • the DMRS corresponding to other antenna ports also meet the above code division characteristics.
  • the DMRS that meet the code division characteristics include: the DMRS corresponding to p1002, the DMRS corresponding to p1003, and the DMRS corresponding to p1004.
  • the DMRSs that satisfy the code division characteristics include: the DMRS corresponding to p1002 and the DMRS corresponding to p1003, the DMRS corresponding to p1004 and the DMRS corresponding to p1005, the DMRS corresponding to p1006 and the DMRS corresponding to p1007, and the DMRS corresponding to p1007.
  • the corresponding DMRSs are the DMRSs corresponding to p1009, the DMRSs corresponding to p1010 and the DMRSs corresponding to p1011.
  • the embodiments of the present application only describe the features of the first reference signal from three aspects: time domain, frequency domain, and code domain. This application does not exclude the possibility of defining other formulas or other expressions in future agreements to represent the same or similar meanings. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the embodiments of the present application that satisfy the characteristics of the dual-symbol DMRS described in the embodiments of the present application should be included in the descriptions of the embodiments of the present application. within the scope of protection.
  • an embodiment of the present application further provides a communication device for resource scheduling, and the communication device for resource scheduling may be a network element in the above method embodiments, or a device including the above network element, or a device that can be used for network element components.
  • the communication apparatus for resource scheduling includes corresponding hardware structures and/or software modules for executing each function.
  • the present application can be implemented in hardware or a combination of hardware and computer software with the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein. Whether a function is performed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.
  • an embodiment of the present application provides a chip, where the chip includes a logic circuit and an input and output interface.
  • the input and output interface is used for communicating with modules other than the chip, and the logic circuit is used for performing other operations on the terminal device in the above method embodiments except for the transceiving operation.
  • the input and output interface executes S901, S902, and S903 on the terminal device side, and/or the input and output interface is also used to execute the steps in the embodiments of the present application. Other transceiving steps on the terminal device side.
  • the logic circuit is used to execute other processing steps on the terminal device side in the embodiments of the present application.
  • the input and output interface executes S1201, S1202, and S1205 on the terminal device side, and/or the input and output interface is also used to execute this function.
  • the logic circuit is used to perform S1204 on the terminal device side, and/or the logic circuit is also used to perform other processing steps on the terminal device side in the embodiments of the present application.
  • the input and output interfaces perform S901, S902, and S903 on the network device side, and/or the input and output interfaces are also used to perform the steps in the embodiments of the present application. Other transceiving steps on the network device side.
  • the logic circuit is used to execute other processing steps on the network device side in the embodiments of the present application.
  • the input and output interfaces execute S1201, S1202, and S1205 on the network device side, and/or the input and output interfaces are also used to execute this function.
  • the logic circuit is used to perform S1206 on the network device side, and/or the logic circuit is used to perform other processing steps on the network device side.
  • FIG. 17 shows a schematic structural diagram of a communication apparatus 1700 for resource scheduling.
  • the communication apparatus 1700 for resource scheduling includes a communication unit 1703 and a processing unit 1702 .
  • the communication unit 1703 executes S901, S902, and S903 on the terminal device side, and/or the communication unit 1703 is further configured to execute this Other transceiving steps on the terminal device side in the application embodiment.
  • the processing unit 1702 is configured to perform other processing steps on the terminal device side in this embodiment of the present application.
  • the communication unit 1703 executes S1201, S1202, and S1205 on the terminal device side, and/or the communication unit 1703 is also configured to execute this function.
  • the processing unit 1702 is configured to execute S1204 on the terminal device side, and/or the processing unit 1702 is further configured to execute other processing steps on the terminal device side in this embodiment of the present application.
  • the communication unit 1703 executes S901, S902, and S903 on the network device side, and/or the communication unit 1703 is also configured to execute the steps in the embodiments of the present application. Other transceiving steps on the network device side.
  • the processing unit 1702 is configured to perform other processing steps on the network device side in this embodiment of the present application.
  • the communication unit 1703 executes S1201, S1202, and S1205 on the network device side, and/or the communication unit 1703 is also configured to execute this function.
  • the processing unit 1702 is configured to execute S1206 on the network device side, and/or the processing unit 1702 is configured to execute other processing steps on the network device side.
  • processing unit 1702 in this embodiment of the present application may be implemented by a processor or a processor-related circuit component
  • the communication unit 1703 may be implemented by a transceiver or a transceiver-related circuit component.
  • the communication apparatus 1700 for resource scheduling may further include a storage unit 1701 for storing program codes and data of the communication apparatus 1700 for resource scheduling, and the data may include but not limited to original data or intermediate data.
  • the processing unit 1702 may be a processor or a controller, for example, a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (application specific integrated circuit) circuit, ASIC), off-the-shelf programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute the various exemplary logical blocks, modules and circuits described in connection with this disclosure.
  • a processor 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 communication unit 1703 may be a communication interface, a transceiver or a transceiver circuit, etc., where the communication interface is a general term, and in a specific implementation, the communication interface may include multiple interfaces.
  • the storage unit 1701 may be a memory.
  • the processing unit 1702 is a processor
  • the communication unit 1703 is a communication interface
  • the storage unit 1701 is a memory
  • the communication apparatus 1800 for resource scheduling involved in this embodiment of the present application may be as shown in FIG. 18 .
  • the communication apparatus 1800 for resource scheduling includes: a processor 1802 , a transceiver 1803 , and a memory 1801 .
  • the transceiver 1803 can be an independently set transmitter, which can be used to send information to other devices, and the transceiver 1803 can also be an independently set receiver, which can be used to receive information from other devices.
  • the transceiver may also be a component that integrates the functions of sending and receiving information, and the specific implementation of the transceiver is not limited in this embodiment of the present application.
  • the communication apparatus 1800 for resource scheduling may further include a bus 1804 .
  • the transceiver 1803, the processor 1802 and the memory 1801 can be connected to each other through a bus 1804; the bus 1804 can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus etc.
  • the bus 1804 can be divided into an address bus, a data bus, a control bus, and the like. For ease of presentation, only one thick line is shown in FIG. 18, but it does not mean that there is only one bus or one type of bus.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server, or data center Transmission to another website site, computer, server, or data center by wire (eg, coaxial cable, optical fiber, digital subscriber line, DSL) or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that a computer can access, or a data storage device such as a server, a data center, or the like that includes an integration of one or more available media.
  • the available media may be magnetic media (eg, floppy disk, hard disk, magnetic tape), optical media (eg, digital video disc (DVD), or semiconductor media (eg, solid state disk, SSD)) Wait.
  • the disclosed system, apparatus and method may be implemented in other manners.
  • the apparatus embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical or other forms.
  • the units described as separate components may or may not be physically separated, and components shown as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network devices. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each functional unit may exist independently, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit may be implemented in the form of hardware, or may be implemented in the form of hardware plus software functional units.
  • the present application can be implemented by means of software plus necessary general-purpose hardware, and of course hardware can also be used, but in many cases the former is a better implementation manner .
  • the technical solutions of the present application can be embodied in the form of software products in essence, or the parts that make contributions to the prior art.
  • the computer software products are stored in a readable storage medium, such as a floppy disk of a computer. , a hard disk or an optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the various embodiments of the present application.

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

Abstract

La présente demande se rapporte au domaine technique des communications. L'invention concerne un procédé et un appareil de communication pour la planification de ressources, capables d'améliorer la flexibilité de la planification de ressources. Le procédé comprend les étapes suivantes : un équipement terminal reçoit des informations de configuration en provenance d'un dispositif de réseau, les informations de configuration configurant un ensemble de créneaux temporels pour l'équipement terminal, l'ensemble de créneaux temporels comprend au moins deux créneaux temporels, le nombre de créneaux temporels dans l'ensemble de créneaux temporels est déterminé en fonction d'un espacement de sous-porteuse cible, et l'espacement de sous-porteuse cible est l'espacement de sous-porteuses sur lesquelles l'équipement terminal est configuré ; l'équipement terminal reçoit des informations de commande de liaison descendante (DCI) à partir du dispositif de réseau, les DCI indiquant une ressource de domaine temporel pour une transmission de données dans l'ensemble de créneaux temporels ; puis, l'équipement terminal effectue la transmission de données avec le dispositif de réseau sur la base de la ressource de domaine temporel indiquée par les DCI.
PCT/CN2021/087913 2020-09-30 2021-04-16 Procédé et appareil de communication pour la planification de ressources WO2022068177A1 (fr)

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CN117998598A (zh) * 2022-11-01 2024-05-07 华为技术有限公司 数据传输方法及装置
CN117997489A (zh) * 2022-11-04 2024-05-07 华为技术有限公司 用于传输物理下行共享信道的方法和通信装置

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