WO2018202106A1 - Procédé et appareil de communication sans fil - Google Patents

Procédé et appareil de communication sans fil Download PDF

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Publication number
WO2018202106A1
WO2018202106A1 PCT/CN2018/085520 CN2018085520W WO2018202106A1 WO 2018202106 A1 WO2018202106 A1 WO 2018202106A1 CN 2018085520 W CN2018085520 W CN 2018085520W WO 2018202106 A1 WO2018202106 A1 WO 2018202106A1
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WIPO (PCT)
Prior art keywords
mcs
target
modulation order
ptrs
determined
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PCT/CN2018/085520
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English (en)
Chinese (zh)
Inventor
徐明慧
管鹏
张希
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201711106456.6A external-priority patent/CN108809601B/zh
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP18794392.3A priority Critical patent/EP3618337B1/fr
Priority to EP21159839.6A priority patent/EP3902184A1/fr
Publication of WO2018202106A1 publication Critical patent/WO2018202106A1/fr
Priority to US16/673,544 priority patent/US11082150B2/en
Priority to US17/374,672 priority patent/US11855771B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a wireless communication method and apparatus.
  • next generation wireless communication networks In the existing wireless communication networks, the frequency range below 6 GHz is available for less and less, and cannot meet the increasing communication requirements.
  • the working frequency band of the communication system In the next generation wireless communication network (such as 5G), the working frequency band of the communication system is above 6 GHz, so the next generation wireless communication network has the remarkable characteristics of the high frequency communication system, so that it is easy to achieve higher throughput.
  • next-generation wireless communication networks operating in the range above 6 GHz will suffer from severe mid-frequency distortion, especially phase noise (PHN). Phase noise, Doppler effect, and central frequency offset (CFO) introduce phase errors into the data reception of high-frequency communication systems, resulting in performance degradation or even inoperability of high-frequency communication systems.
  • PPN phase noise
  • CFO central frequency offset
  • DMRS de-modulation reference signal
  • PTRS phase tracking reference signal
  • PCRS phase compensation reference signal
  • the time and frequency density of the PTRS is a fixed mode.
  • the time and frequency density of the PTRS is a fixed mode, which will occupy more subcarriers and have larger resource overhead. Therefore, how to flexibly configure PTRS and reduce the resource overhead of PTRS is an urgent problem to be solved.
  • the embodiment of the present application provides a wireless communication method and device, which is beneficial to flexibly configuring PTRS and reducing resource overhead of reducing PTRS.
  • the embodiment of the present application provides a wireless communication method, including: if a current modulation and coding mode MCS exceeds a predetermined threshold, determining a target MCS, the target MCS being an MCS less than or equal to a predetermined threshold; according to the target MCS
  • the phase tracking reference signal PTRS is mapped onto one or more symbols or subcarriers.
  • a target MCS less than or equal to a predetermined threshold may be determined, so that the target MCS, and the MCS threshold and the PTRS time domain density may be determined according to the target MCS.
  • the association relationship flexibly determines the density of the PTRS on the time-frequency resource, thereby facilitating the reduction of the resource overhead of the PTRS.
  • the specific implementation manner of determining the target MCS may be: determining a target modulation order according to the current MCS; determining, according to the correspondence relationship between the modulation order and the MCS, the MCS corresponding to the target modulation order as the target MCS.
  • the target MCS less than or equal to the predetermined threshold can be determined, thereby facilitating flexible configuration of the time-frequency density of the PTRS, and facilitating the reduction of the PTRS overhead.
  • the specific implementation manner of determining the MCS corresponding to the target modulation order as the target MCS according to the modulation order and the MCS correspondence information may be: the target modulation order corresponds to multiple MCSs, and the target modulation order corresponds to multiple The largest MCS in each MCS is determined as the target MCS.
  • the larger the target MCS the larger the time-frequency density of the determined PTRS, and thus the system performance can be guaranteed. It can be seen that by implementing the implementation manner, the target MCS that is less than or equal to the predetermined threshold can be determined, thereby facilitating flexible configuration of the time-frequency density of the PTRS, and facilitating the PTRS overhead while ensuring system performance.
  • the specific implementation manner of determining the MCS corresponding to the target modulation order as the target MCS according to the modulation order and the MCS correspondence information may be: the target modulation order corresponds to multiple MCSs, and the target modulation order corresponds to multiple The smallest MCS among the MCSs is determined as the target MCS.
  • the target MCS less than or equal to the predetermined threshold can be determined, thereby facilitating flexible configuration of the time-frequency density of the PTRS, and facilitating the reduction of the PTRS overhead.
  • the target MCS may be any MCS except the largest and smallest MCS among the plurality of MCSs that are less than the predetermined threshold corresponding to the target modulation order.
  • the target MCS less than or equal to the predetermined threshold can be determined, thereby facilitating flexible configuration of the time-frequency density of the PTRS, and facilitating the reduction of the PTRS overhead.
  • the specific implementation manner of determining the target MCS may be: using the first MCS or the last MCS as the target MCS.
  • the first MCS indicates the MCS used in the initial transmission of data
  • the last MCS indicates the MCS used in the last transmission of data.
  • the last time may be the initial transmission or the retransmission.
  • the specific implementation manner of determining the target MCS may be: using a predetermined threshold as the target MCS.
  • the specific implementation manner of determining the target MCS may be: determining the target MCS according to the number of bits currently required to be transmitted and the scheduling bandwidth.
  • the target MCS less than or equal to the predetermined threshold can be determined, thereby facilitating flexible configuration of the time-frequency density of the PTRS, and facilitating the reduction of the PTRS overhead.
  • the number of bits that need to be transmitted is used as the transport block size that needs to be transmitted currently, and the transmission that needs to be transmitted is determined according to the mapping relationship between the transport block size, the scheduling bandwidth, and the transport block set index.
  • the target transport block set index corresponding to the block size and the current scheduling bandwidth; determining the MCS corresponding to the target transport block set index as the target MCS according to the mapping relationship between the MCS and the transport block set index.
  • the target modulation order corresponding to the current MCS may be determined, and the target transmission is performed.
  • the MCS corresponding to the target modulation order is used as the target MCS.
  • determining the target MCS includes: determining, by the physical downlink control channel, an MCS that is less than or equal to a predetermined threshold, as the target MCS.
  • the target MCS less than or equal to the predetermined threshold can be determined, thereby facilitating flexible configuration of the time-frequency density of the PTRS, and facilitating the reduction of the PTRS overhead.
  • the MCS configured on the physical downlink control channel may be an MCS configured for the most recent semi-static physical downlink control channel.
  • an apparatus that performs the method of the first aspect, a possible implementation of the first aspect described above.
  • This function can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more units corresponding to the functions described above.
  • the unit can be software and/or hardware.
  • the device may be a network device or a terminal device.
  • an apparatus comprising: a processor, a memory, a communication interface, and one or more programs; a processor, a communication interface, and a memory connection; wherein one or more programs are stored in the memory,
  • the one or more programs may be executed by a processor such that the first aspect, the solution in a possible implementation of the first aspect is performed.
  • a computer storage medium having stored therein program code, the program code being operative to indicate a method of performing the first aspect or any alternative implementation of the first aspect.
  • an embodiment of the present invention further provides a wireless communication method, where the method includes:
  • the target MCS is determined, and the index value of the target MCS is smaller than the current MCS index value
  • the phase tracking reference signal PTRS is mapped to one or more symbols, or a plurality of subcarriers, according to the target MCS.
  • the index value of the current MCS may be large, but the modulation order may not be large, such as 2nd order.
  • a target MCS smaller than the current MCS may be determined, and the density of the PTRS on the time-frequency resource is flexibly determined according to the target MCS and the relationship between the MCS threshold and the PTRS time domain density, thereby facilitating the reduction of the PTRS resource. Overhead.
  • the embodiment of the present invention further provides a wireless communication method, where the method includes:
  • the target MCS is determined according to the modulation and coding mode MCS used by the retransmitted data, and the index value of the target MCS is smaller than the index value of the MCS used by the current data.
  • a phase tracking reference signal PTRS is mapped to one or more symbols or a plurality of subcarriers according to the target MCS.
  • the modulation coding mode MCS used in the retransmission may be larger than the initial transmission, but the modulation order may not be large, such as 2nd order and 4th order.
  • a target MCS whose index value is smaller than the index value of the current MCS may be determined, and according to the target MCS, and the relationship between the MCS threshold value and the PTRS time domain density, the density of the PTRS on the time-frequency resource is flexibly determined, thereby It is beneficial to reduce the resource overhead of PTRS.
  • the embodiment of the present invention further provides a wireless communication method, where the method includes:
  • the index value of the currently used MCS is the maximum of the plurality of MCSs corresponding to the corresponding modulation order, determine the target MCS;
  • the phase tracking reference signal PTRS is mapped to one or more symbols or a plurality of subcarriers according to the target MCS.
  • the corresponding modulation order may not be large, such as 2nd order and 4th order.
  • a target MCS smaller than the current MCS may be determined, and the density of the PTRS on the time-frequency resource is flexibly determined according to the target MCS and the relationship between the MCS threshold and the PTRS time domain density, thereby facilitating the reduction of the PTRS resource. Overhead.
  • the specific implementation manner of determining the target MCS may be: determining a target modulation order according to the current MCS; and corresponding to the MCS according to the modulation order
  • the relationship information determines the MCS corresponding to the target modulation order as the target MCS.
  • the specific implementation manner of determining the MCS corresponding to the target modulation order as the target MCS may be:
  • the target modulation order corresponds to a plurality of MCSs, and the MCS having the largest index value among the plurality of MCSs corresponding to the target modulation order is determined as the target MCS.
  • the larger the target MCS the larger the time-frequency density of the determined PTRS, and thus the system performance can be guaranteed. It can be seen that by implementing the implementation manner, the target MCS that is less than or equal to the predetermined threshold can be determined, thereby facilitating flexible configuration of the time-frequency density of the PTRS, and facilitating the PTRS overhead while ensuring system performance.
  • the specific implementation manner of determining the MCS corresponding to the target modulation order as the target MCS may be:
  • the target modulation order corresponds to a plurality of MCSs, and the MCS having the smallest index value among the plurality of MCSs corresponding to the target modulation order is determined as the target MCS.
  • the target MCS less than or equal to the predetermined threshold can be determined, thereby facilitating flexible configuration of the time-frequency density of the PTRS, and facilitating the reduction of the PTRS overhead.
  • the target MCS may be a plurality of MCSs corresponding to the target modulation order that are less than a predetermined threshold. Any MCS other than the MCS with the largest and smallest index value.
  • the target MCS less than or equal to the predetermined threshold can be determined, thereby facilitating flexible configuration of the time-frequency density of the PTRS, and facilitating the reduction of the PTRS overhead.
  • the specific implementation manner of determining the target MCS may be: using the first MCS or the last MCS as the target MCS.
  • the MCS indicates the MCS used when the data was originally transmitted.
  • the last MCS indicates the MCS used when the data was transmitted last time.
  • the last time can be the initial transmission or the retransmission.
  • the specific implementation manner of determining the target MCS may be: determining the target MCS according to the number of bits currently required to be transmitted and the scheduling bandwidth.
  • the target MCS less than or equal to the predetermined threshold can be determined, thereby facilitating flexible configuration of the time-frequency density of the PTRS, and facilitating the reduction of the PTRS overhead.
  • the number of bits that need to be transmitted is used as the transport block size that needs to be transmitted currently, and the transmission that needs to be transmitted is determined according to the mapping relationship between the transport block size, the scheduling bandwidth, and the transport block set index.
  • the target modulation order corresponding to the current MCS may be determined, and corresponding to the target transport block set index.
  • the MCS corresponding to the target modulation order is used as the target MCS.
  • determining the target MCS includes: determining, by the MCS configured by the physical downlink control channel, that the index value is less than or equal to a predetermined threshold, Target MCS.
  • the MCS configured on the physical downlink control channel may be an MCS configured for the most recent semi-static physical downlink control channel.
  • an apparatus which may perform the method of the first aspect, the possible implementation of the first aspect, the fifth aspect, the method of the possible implementation of the fifth aspect, the sixth aspect, and the sixth A method in a possible implementation, a seventh aspect, a method in a possible implementation of the seventh aspect.
  • This function can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more units corresponding to the functions described above.
  • the unit can be software and/or hardware. Based on the same inventive concept, the principle and the beneficial effects of the device for solving the problem can be referred to the first aspect, the possible implementation manners and the beneficial effects of the first aspect, and the repeated description is not repeated.
  • a ninth aspect, the embodiment of the present invention further provides a wireless communication method, where the method includes:
  • the phase tracking reference signal PTRS is obtained according to the target MCS.
  • a possible design the method further comprising:
  • phase tracking reference signal PTRS being included on the one or more OFDM symbols.
  • the embodiment of the present invention further provides a wireless communication method, where the method includes:
  • the target MCS is determined, and the target MCS is smaller than the current MCS
  • the phase tracking reference signal PTRS is obtained according to the target MCS.
  • the transmitting end can determine the target MCS that is smaller than the current MCS, which is beneficial to reduce the overhead of the downlink/uplink signal.
  • the method further includes:
  • phase tracking reference signal PTRS being included on the one or more OFDM symbols.
  • an embodiment of the present invention further provides a wireless communication method, where the method includes:
  • the target MCS is determined according to the modulation and coding mode MCS used in the retransmission data, and the target MCS is smaller than the MCS used by the current data;
  • a phase tracking reference signal PTRS is obtained from the one or more OFDM symbols according to a target MCS.
  • the transmitting end can determine the target MCS that is smaller than the current MCS, which is beneficial to reduce the overhead of the downlink/uplink signal.
  • the method further includes:
  • phase tracking reference signal PTRS being included on the one or more OFDM symbols.
  • the embodiment of the present invention further provides a wireless communication method, where the method includes:
  • the target MCS is determined
  • the phase tracking reference signal PTRS is obtained according to the target MCS.
  • the transmitting end can determine the target MCS that is smaller than the current MCS, which is beneficial to reduce the overhead of the downlink/uplink signal.
  • the method further includes:
  • phase tracking reference signal PTRS being included on the one or more OFDM symbols.
  • the correspondence relationship between the MCS and the modulation order is pre-configured or pre-stored.
  • MCS information from the peer device for indicating current data is received.
  • the specific implementation manner of determining the target MCS may be: determining a target modulation order according to the current MCS; and corresponding to the MCS according to the modulation order
  • the relationship information determines the MCS corresponding to the target modulation order as the target MCS.
  • the specific implementation manner of determining the MCS corresponding to the target modulation order as the target MCS may be:
  • the target modulation order corresponds to a plurality of MCSs, and the largest MCS among the plurality of MCSs corresponding to the target modulation order is determined as the target MCS.
  • the specific implementation manner of determining the MCS corresponding to the target modulation order as the target MCS may be:
  • the target modulation order corresponds to a plurality of MCSs, and the smallest MCS among the plurality of MCSs corresponding to the target modulation order is determined as the target MCS.
  • the target MCS may be in a plurality of MCSs corresponding to the target modulation order that are less than a predetermined threshold. , any MCS except the largest and smallest MCS.
  • the specific implementation manner of determining the target MCS may be: using the first MCS or the last MCS as the target MCS, or using the MCS used in the initial data as the target MCS.
  • determining the target MCS includes: determining, by the physical downlink control channel, an MCS that is smaller than the current data, as the target MCS.
  • the MCS configured on the physical downlink control channel may be the MCS configured for the most recent semi-static physical downlink control channel.
  • a device which may perform the method of any of the ninth to twelfth aspects, the possible implementation of any of the ninth to twelfth aspects.
  • This function can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more units corresponding to the functions described above.
  • the unit can be software and/or hardware.
  • a wireless communication method including:
  • the time domain density of the PTRS is determined according to a pre-stored or predefined mapping relationship between the MCS and the time domain density; or the modulation order corresponding to the code rate is reserved. a mapping table of numbers or modulation modes and time domain densities, determining a time domain density of the PTRS;
  • the phase tracking reference signal PTRS is mapped onto one or more symbols based on the determined time domain density.
  • the MCS ranges from 29, 30, and 31.
  • the MCS ranges from 28, 29, 30, and 31.
  • the MCS ranges from 27, 28, 29, 30, and 31.
  • a wireless communication method including:
  • the time domain density of the PTRS is determined according to a pre-stored or predefined mapping relationship between the MCS and the time domain density; or according to when the code rate is reserved. Determining a time-domain density of the PTRS by a modulation order or a mapping relationship between the modulation mode and the time domain density;
  • an apparatus including a processing module and a communication module, wherein:
  • a processing module configured to determine a time domain density of the PTRS according to a pre-stored or predefined mapping relationship between MCS and time domain density, if the code rate corresponding to the current modulation coding mode MCS is reserved, or according to a code rate Determining a time domain density of the PTRS according to a mapping table corresponding to a modulation order or a modulation mode and a time domain density when reserved;
  • the processing module is further configured to map the phase tracking reference signal PTRS to one or more symbols according to the determined time domain density.
  • an apparatus comprising a transceiver module and a processing module, wherein:
  • a transceiver module configured to receive one or more symbols or multiple subcarriers, where the one or more symbols or multiple subcarriers are mapped with a PTRS, and a time domain density of the PTRS is related to a modulation and coding mode MCS;
  • a processing module configured to determine a time domain density of the PTRS according to a pre-stored or predefined mapping relationship between MCS and time domain density, if the code rate corresponding to the current modulation coding mode MCS is reserved, or according to a code rate Determining a time domain density of the PTRS according to a mapping table corresponding to a modulation order or a modulation mode and a time domain density, and from the one or more symbols or a plurality of subcarriers according to a time domain density of the PTRS Obtain the PTRS on it.
  • Yet another aspect of the present application provides a computer readable storage medium having stored therein instructions that, when executed on a computer, cause the computer to perform the wireless communication methods provided by the various aspects described above.
  • Yet another aspect of the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the methods provided by the various aspects described above.
  • the technical solution provided by the present application can determine a target MCS that is less than or equal to a predetermined threshold, thereby facilitating flexible configuration of a time-frequency density of a PTRS, and is advantageous for reducing a downlink/uplink signal overhead when mapping a PTRS.
  • FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application.
  • FIG. 2A is a schematic flowchart of a wireless communication method according to an embodiment of the present application.
  • 2B is a schematic flowchart of another wireless communication method according to an embodiment of the present application.
  • 2C is a schematic flowchart of still another method for wireless communication provided by an embodiment of the present application.
  • 2D is a schematic flowchart of still another wireless communication method according to an embodiment of the present application.
  • FIG. 3 is a schematic diagram of a PTRS mapping provided by an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a device according to an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of another apparatus according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of another apparatus according to an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of another apparatus according to an embodiment of the present application.
  • the embodiment of the present application provides a wireless communication method and device, which is beneficial to flexibly configuring PTRS and reducing resource overhead of reducing PTRS.
  • FIG. 1 is a schematic diagram of a communication system provided by using an embodiment of the present application.
  • the communication system includes a network device and one or more terminal devices, and the network device can communicate with the terminal device.
  • FIG. 1 is an example in which a network device communicates with two terminal devices. It can be understood that the network device can communicate with any number of target terminal devices.
  • the communication system may be a Public Land Mobile Network (PLMN) network or a D2D (Device to Device) network or an M2M (Machine to Machine) network or other network.
  • PLMN Public Land Mobile Network
  • D2D Device to Device
  • M2M Machine to Machine
  • FIG. 1 is only a simplified schematic diagram of an example, and other network devices may also be included in the network, which are not shown in FIG. 1.
  • the network device may be a device that communicates with the terminal device, for example, a network device or a network device controller or the like.
  • Each network device can provide communication coverage for a specific geographic area, and can communicate with terminal devices (eg, UEs) located within the coverage area (cell), the network device can support different standard communication protocols, or can support different Communication mode.
  • the network device may be a GSM system or a network device (Base Transceiver Station, BTS) in a CDMA system, or may be a network device (NodeB, NB) in a WCDMA system, or may be an evolved network in an LTE system.
  • a device (Evolved Node B, eNB or eNodeB), or a wireless controller in a Cloud Radio Access Network (CRAN), or the network device may be a network device in a future 5G network, such as a gNB or a small station.
  • the TRP transmission reception point
  • PLMN Public Land Mobile Network
  • the terminal device may refer to an access terminal, a user equipment (User Equipment, UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile terminal, a user terminal, Terminal, wireless communication device, user agent or user device.
  • the access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), with wireless communication.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • Functional handheld devices computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in the Internet of Things, virtual reality devices, terminal devices in future 5G networks, or future evolved public land mobile networks Terminal equipment in the (Public Land Mobile Network, PLMN).
  • PLMN Public Land Mobile Network
  • Network equipment and terminal equipment can be deployed on land, indoors or outdoors, hand-held or on-board; they can also be deployed on the water; they can also be deployed on airborne aircraft, balloons and satellites.
  • the application scenarios of the network device and the terminal device are not limited in the embodiment of the present application.
  • the prior art provides PTRS to track the residual phase error.
  • the existing network device or terminal device configures the time and frequency density of the PTRS in a fixed mode (for example, the time domain density is fixed at 1, and the single port frequency domain density is fixed at 1/48). Under the big data bandwidth, the time and frequency density of the PTRS is a fixed mode, which will occupy more subcarriers and have larger resource overhead.
  • the existing Modulation and Coding Scheme (MCS) or MCS index value has a total of 5 bits (hereinafter, the MCS index value is simply referred to as MCS), ranging from 0 to 31, where 0 to n and n to 31.
  • MCS Modulation and Coding Scheme
  • the modulation order corresponding to the MCS increases with the modulation coding mode in the corresponding interval, where n is an integer greater than 0 and less than 31. There is no monotonous increase in the modulation order between the 0 and 31 interval ranges, that is, the high modulation coding mode may also correspond to the low modulation order.
  • the following line uses 64 Quadrature Amplitude Modulation (QAM) as an example.
  • the modulation order corresponding to the MCS of 0 to 28 increases with the modulation and coding scheme in the corresponding interval, 29 ⁇
  • the modulation order corresponding to the MCS of 31 increases with the modulation coding mode in the corresponding interval, but the modulation order of 29 and 30 is less than the modulation order of 28, and the modulation order between the ranges of 0 to 31 is not always incremented. Relationship.
  • the MCS index has a correspondence relationship with the modulation order Q m and the modulation order Q′ m .
  • each MCS index I MCS has a correspondence relationship with the modulation order Q m , the modulation order Q′ m , and the transport block set index I TBS .
  • m is determined using the modulation order may be based on the Q modulation order.
  • the modulation order may be based on the use of Q 'm determined modulation order used.
  • the modulation order referred to below may be referred to as the modulation order Q m or the modulation order Q′ m , which is not limited in the present application.
  • the form of Table 2 is merely a possible implementation, and in other implementations, it may not be implemented in the form of Table 2.
  • the MCS index has a correspondence with at least one of the modulation order Q m , the modulation order Q′ m , and the transport block set index I TBS , and may be embodied in the form of one or more tables.
  • the same modulation order Q m or modulation order Q′ m corresponds to one or more MCS indexes.
  • the modulation order Q m of 2 may correspond to the MCS index of 0-4 and 28; the modulation order Q m of 4 may correspond to the MCS index of 5-10 and 29, and the MCS index 0-31 corresponds to the modulation order and Not always an incremental relationship.
  • the modulation order corresponding to the MCS index interval 0 to 27 is increased, and the modulation order corresponding to the modulation coding mode MCS index intervals 28 to 31 is less than or equal to the modulation order corresponding to the MCS index 27, and the MSC index interval 28-31 corresponds to The modulation order is incremental.
  • the MCS index value corresponding to the reserved field may be one or more.
  • the MCS index corresponding to the reserved in Table 2 is 29 to 31, and may be other values. Not limited.
  • MCS occupies 6 bits, but does not occupy the example for illustration.
  • a total of 64 bits can represent 64 MCS index values. Unfilled means that these 64 values are not all used to represent the MCS, and there is partial vacancy.
  • the value of MCS in Table 3 ranges from 0 to 50, and only takes 51 values.
  • each MCS index I MCS has a correspondence relationship with the modulation order Q m , the modulation order Q′ m , and the transport block set index I TBS . It can be understood that the form of Table 3 merely gives a possible implementation manner. In other implementation manners, it may also be implemented in the form of Table 3.
  • the MCS index I MCS has a correspondence with at least one of the modulation order Q m , the modulation order Q′ m , and the transport block set index I TBS , and may be embodied in the form of one or more tables.
  • the same modulation order Q m or modulation order Q' m corresponds to one or more MCS indexes.
  • the modulation order Q m of 2 may correspond to the MCS index of 0-10 and 47; the modulation order Q m of 4 may correspond to the MCS index of 11-20 and 48, and the MCS index of 0 to 50 corresponds to the modulation order and Not always an incremental relationship.
  • the modulation order corresponding to the MCS index intervals 0 to 46 is increased, and the modulation order corresponding to the MCS index intervals 47 to 50 is less than or equal to the modulation order corresponding to the MCS index 46, and the modulation order corresponding to the MCS index intervals 47 to 50.
  • the number is incremental.
  • the MCS index value corresponding to the reserved field may be one or more.
  • the MCS index corresponding to the reserved in Table 3 is 47 to 50, and may be other values. Not limited.
  • MCS 256QAM modulation
  • Table 4 The MCS index I MCS has a correspondence relationship with the modulation order Q m , the modulation order Q′ m and the transport block set index I TBS . It can be understood that the form of Table 4 merely gives a possible implementation manner, and in other implementation manners, it may not be implemented in the form of Table 4.
  • the MCS index I MCS has a correspondence with at least one of the modulation order Q m , the modulation order Q′ m , and the transport block set index I TBS , and may be embodied in the form of one or more tables.
  • the same modulation order Q m or modulation order Q' m corresponds to one or more MCS indexes.
  • the modulation order Q m of 2 may correspond to the MCS index of 0-14 and 60;
  • the modulation order Q m of 4 may correspond to the MCS index of 15-26 and 61, and
  • the MCS index of 0 to 63 corresponds to the modulation order and Not always an incremental relationship.
  • the modulation order corresponding to the MCS index intervals 0 to 59 is increased, and the modulation order corresponding to the MCS of the MCS index intervals 60 to 63 is less than or equal to the modulation order corresponding to the MCS index 59, and the MCS index intervals 60 to 63 correspond to The modulation order is incremental.
  • the MCS index value corresponding to the reserved field may be one or more.
  • the MCS index corresponding to the reserved in Table 4 is 60-63, and may be other values. Not limited.
  • each MCS index I MCS and modulation order Q' m and transport block set index I TBS and redundancy version RV have a corresponding relationship. It can be understood that the form of Table 5 merely gives a possible implementation manner, and in other implementation manners, it may not be implemented in the form of Table 5.
  • the MCS index I MCS may have a corresponding relationship with at least one of the modulation order Q′ m and the transport block set index I TBS and the redundancy version number (which may also be referred to as a redundancy version index) RVidx, and may be one or more The form of the table is reflected.
  • the same modulation order Q' m corresponds to one or more MCS indexes.
  • the modulation order corresponding to the MCS index intervals 0 to 28 and the transport block set index I TBS are increased, and the redundancy version index RVidx corresponding to the MCS index intervals 0 to 28 is 0, but the MCS indexes are corresponding to 29, 30, and 31.
  • the modulation order and the transport block set index are reserved, and the corresponding redundancy version index RVidx is 1, 2, and 3, respectively.
  • the MCS index value corresponding to the reserved field may be one or more.
  • the MCS index corresponding to the reserved in Table 5 is 29 to 31, and may be other values. Not limited.
  • the number of redundancy versions is 4 (that is, the maximum redundancy version index is 3) as an example, as shown in Table 6:
  • the redundancy version index RVidx has a corresponding relationship. It can be understood that the form of Table 6 merely gives a possible implementation manner, and in other implementation manners, it may not be implemented in the form of Table 6.
  • the MCS index I MCS has a correspondence relationship with at least one of the modulation order Q′ m and the transport block set index I TBS and the redundancy version index RVidx, and may be embodied in the form of one or more tables.
  • the same modulation order Q'm corresponds to one or more MCS indexes.
  • the modulation order corresponding to the MCS index intervals 0 to 31 and the transport block set index I TBS are increased, and the redundancy version index RVidx corresponding to the MCS index intervals 0 to 28 is 0.
  • the modulation order corresponding to the MCS index is 29, 30, and 31, the transport block set index is reserved, and the corresponding redundancy version index RVidx is 1, 2, and 3, respectively.
  • the MCS index value corresponding to the reserved field may be one or more.
  • the MCS index corresponding to the reserved in Table 6 is 29 to 31, and may be other values. Not limited.
  • each MCS index I MCS and modulation order Q' m and transport block set index I TBS The redundancy version index RVidx has a corresponding relationship.
  • Table 7 merely gives a possible implementation manner. In other implementation manners, it may also be implemented in the form of Table 7.
  • the MCS index I MCS has a correspondence relationship with at least one of the modulation order Q′ m and the transport block set index I TBS and the redundancy version index RVidx, and may be embodied in the form of one or more tables.
  • the same modulation order Q'm corresponds to one or more MCS indexes.
  • the modulation order corresponding to the MCS index intervals 0 to 28 and the transport block set index I TBS are increased, and the redundancy version index RVidx corresponding to the MCS index intervals 0 to 28 is 0, but the modulation order corresponding to the MCS index intervals 29 to 35 is
  • the number and transport block set index are reserved, and the corresponding redundancy version index RVidx is 1-7 respectively.
  • the MCS index value corresponding to the reserved field may be one or more.
  • the MCS index corresponding to the reserved in Table 7 is 29 to 35, and may be other values. Not limited.
  • the number of redundancy versions is 8 (that is, the maximum redundancy version index is 7), as shown in the following Table 8:
  • the remaining version index RVidx has a corresponding relationship.
  • Table 8 merely gives a possible implementation manner. In other implementation manners, it may also be implemented in the form of Table 8.
  • the MCS index I MCS has a correspondence relationship with at least one of the modulation order Q′ m and the transport block set index I TBS and the redundancy version index RVidx, and may be embodied in the form of one or more tables.
  • the modulation order between the range of the MCS index 0 to 41 is not always increasing.
  • the same modulation order Q'm corresponds to one or more MCS indexes.
  • the modulation order corresponding to the MCS index intervals 0 to 34 and the transport block set index I TBS are increased, and the redundancy version index RVidx corresponding to the MCS index intervals 0 to 28 is 0, but the modulation order corresponding to the MCS index intervals 35 to 41
  • the number and transport block set index are reserved, and the corresponding redundancy version index RVidx is 1-7 respectively.
  • the MCS index value corresponding to the reserved field may be one or more.
  • the MCS index corresponding to the reserved in Table 8 is 35 to 41, and may be other values. Not limited.
  • the standard may define other columns based on Tables 1 to 8.
  • Table 9 the table includes the code rate.
  • Each MCS index I MCS has a correspondence relationship with the modulation order Q m and the code rate.
  • the form of Table 9 merely gives a possible implementation manner, and in other implementations, it may not be implemented in the form of Table 9.
  • the MCS index I MCS has a correspondence with at least one of the modulation order Q m and the code rate, and may be embodied in the form of one or more tables.
  • the modulation order between the 0 and 31 interval ranges is not always increasing.
  • the same modulation order Q m corresponds to one or more MCS indexes.
  • the modulation order corresponding to the MCS index intervals 0 to 27 is increased, but the code rates corresponding to the MCS index intervals 28 to 31 are reserved, and the corresponding modulation orders are 2, 4, 6, and 8, respectively.
  • the MCS index value corresponding to the reserved field may be one or more.
  • the MCS index corresponding to the reserved in Table 9 is 27 to 31, and may be other values. Not limited.
  • the network device or the terminal device can flexibly configure the time-frequency density of the PTRS according to the relationship between the currently scheduled MCS and the MCS threshold and the PTRS time-frequency domain density.
  • the relationship between the MCS threshold and the PTRS time domain density can be as shown in Table 9 below.
  • the MCS threshold value and the PTRS frequency domain density may also have a similar relationship.
  • the relationship between the MCS threshold value and the PTRS time domain density is exemplified.
  • threshold It may be the MCS+1 corresponding to the maximum transport block set index.
  • Table 1 above is an example, threshold value Can be 29. Since the modulation order corresponding to the MCS of 0 to 28 is incremental, the time domain density of the PTRS can be flexibly set by the association relationship of Table 2 below.
  • the threshold 6 the threshold 10, threshold Is 17, threshold If the current scheduled MCS is greater than or equal to 0, and less than 6, the time domain density of the PTRS may be determined to be 0; when the currently scheduled MCS is greater than or equal to 6, and less than 10, the time domain density of the PTRS may be determined as 1/4; when the currently scheduled MCS is greater than or equal to 10, and less than 17, the time domain density of the PTRS may be determined to be 1/2; when the currently scheduled MCS is greater than or equal to 17, and less than 29, the time domain of the PTRS may be determined.
  • the density is 1.
  • the MCS threshold may be based on a phase noise level of the network side or the terminal, and/or a capability of the receiver, and/or a subcarrier spacing, and/or a frequency point, and/or a currently scheduled MCS and transport block set index. And/or the correspondence between the currently scheduled MCS and the modulation order is determined. That is to say, different terminals, different subcarrier spacings, different frequency points, different MCSs and transport block set indexes, and different MCSs and modulation orders may have different MCS thresholds.
  • any time domain density and frequency domain density set can be achieved by setting the same threshold, that is, when the left threshold is equal to the right threshold, the row is invalid.
  • the time domain density at this time does not support 1/4; (2) Order as well as At this time, the time domain density only supports 0 and 1; (3) for a terminal with an ideal phase noise level, it can set all MCS thresholds to be equal, and is equal to the maximum MCS+1 directly corresponding to the transport block set index, which can be achieved.
  • the terminal does not always schedule PTRS, and the frequency domain density is similar.
  • the relationship between the MCS threshold and the time domain density of the PTRS may also be expressed in the form of a formula, as shown in the formula (1):
  • D T represents the time domain density
  • Table 2 and Equation (1) are only examples of the relationship between the MCS threshold and the PTRS time domain density.
  • the relationship between the MCS threshold and the PTRS time domain density may also be other representations, such as The equal sign can also be set to the right, as shown in the formula (2), which is not limited in this application.
  • the time domain density in Table 2 and Equation (1) is also only an example, and may be one symbol, every two symbols, one PTRS or the like for every four symbols, or other expressions. limited.
  • the current modulation order is greater than or equal to the threshold.
  • the time-frequency resources of the PTRS cannot be flexibly configured according to the relationship between the MCS threshold and the frequency domain density of the PTRS.
  • the threshold value If the current modulation order is 29, 30, or 31, the time-frequency resources of the PTRS cannot be flexibly configured according to the relationship between the MCS threshold and the PTRS time-frequency domain density. Therefore, the embodiment of the present application provides a wireless communication method and device, which are beneficial to solve the current modulation order greater than a threshold. How to flexibly configure the time-frequency resources of PTRS.
  • the frequency domain density of PTRS refers to which subcarriers or REs the PTRS is mapped to in the frequency domain.
  • the frequency domain density of the PTRS may be related to at least one of a CP type, the user scheduling bandwidth, a subcarrier spacing, and a modulation order. That is to say, the total number of subcarriers L PTRS mapped by the PTRS in the user scheduling bandwidth may be related to at least one of a CP type, the user scheduling bandwidth, a subcarrier spacing, and a modulation order.
  • the frequency domain density of the PTRS is corresponding to at least one of a CP type, the user scheduling bandwidth, a subcarrier spacing, and a modulation order.
  • Different CP types or the user scheduling bandwidth or subcarrier spacing or modulation order correspond to different frequency domain densities.
  • the corresponding relationship may be predefined by a protocol, or may be configured by a network device by using high layer signaling, such as RRC signaling.
  • one or more scheduling bandwidth thresholds may be configured by using predefined or higher layer signaling, and all scheduling bandwidths between adjacent two scheduling bandwidth thresholds correspond to the same PTRS.
  • the frequency domain density can be as shown in Table 10.
  • the BW_1, BW_2, BW_3, BW_4, and BW_5 are the scheduling bandwidth thresholds, and the number of resource blocks included in the scheduling bandwidth of the scheduling bandwidth threshold may be represented by the frequency domain span corresponding to the scheduling bandwidth, which is not limited herein.
  • the frequency domain density "1/2" indicates that the PTRS occupies one subcarrier per 2 resource blocks.
  • the meanings of the frequency domain density "1/4", "1/8", and "1/16" can be analogized and will not be described again.
  • different subcarrier spacings may correspond to different scheduling bandwidth thresholds. That is to say, for different subcarrier spacings, different correspondence table between scheduling bandwidth threshold and time domain density can be configured.
  • the scheduling bandwidth threshold corresponding to each of the different subcarrier intervals may be predefined by a protocol, or may be configured by the network device by using high layer signaling (for example, RRC signaling).
  • a default subcarrier spacing (represented as SCS_1), such as 15 kHz, may be configured by protocol pre-defined or higher layer signaling, and one or more default scheduling bandwidth gates corresponding to the default subcarrier spacing. Limit (expressed as BW').
  • the actual scheduling bandwidth BW plus BW_offset falls within the interval [BW_1, BW_2] at the non-default subcarrier interval of 60 Hz
  • the frequency domain density of PTRS is 1. If the actual modulation order BW plus BW_offset falls within the interval [BW_2, BW_3], the frequency domain density of the PTRS is 1/2.
  • a default subcarrier spacing (represented as SCS_1) may be configured by protocol pre-defined or higher layer signaling, and one or more default scheduling bandwidth thresholds corresponding to the default sub-carrier spacing ( Expressed as BW').
  • the actual scheduling bandwidth BW and the default scheduling bandwidth threshold BW' may be used to determine which default scheduling bandwidth threshold interval the BW falls in, and then the default scheduling bandwidth threshold interval is used.
  • the frequency domain density is multiplied by the scaling factor ⁇ to determine the actual frequency domain density of the PTRS.
  • FIG. 2A is a method for wireless communication provided by an embodiment of the present application.
  • the wireless communication method can be applied to a network device or a terminal device.
  • the wireless communication method includes the following sections 201-202, wherein:
  • determining the target MCS may be implemented in multiple manners, and the target MCS is an MCS that is less than or equal to a predetermined threshold.
  • the predetermined threshold may be one of: the MCS corresponding to the maximum transport block set index, the MCS corresponding to the largest redundancy version index Rvidx, the MCS corresponding to the maximum code rate, the MCS+1 corresponding to the maximum transport block set index, and the largest The MCS+1 corresponding to the redundancy version Rvidx and the MCS+1 corresponding to the maximum code rate, that is, the above threshold
  • the target MCS may be an MCS that is less than or equal to a predetermined threshold.
  • the predetermined threshold is MCS+1 corresponding to the maximum transport block size
  • the target MCS may be an MCS that is less than a predetermined threshold. Table 1 above is an example, if At 29, the predetermined threshold may be 28 or 29. If the predetermined threshold is 28, the target MCS is an MCS less than or equal to 28. If the predetermined threshold is 29, the target MCS is an MCS of less than 29.
  • the target MCS needs to be determined; or when the transport block set index is reserved, the target MCS needs to be determined.
  • the predetermined threshold may be 27 or 28. That is, when the current I MCS >27 or I MCS ⁇ 28, the target MCS is determined; or when the transport block set index I TBS is reserved, the target MCS is determined; or when the retransmission is at this time, the target MCS is determined. Or when the modulation order Q m or Q' m starts to change from large to small, the target MCS is determined.
  • Table 3 above is an example, if At 47, the predetermined threshold may be 46 or 47.
  • the target MCS is determined; or when the transport block set index I TBS is reserved, the target MCS is determined; or when the retransmission is at this time, the target MCS is determined; or The target MCS is determined when the modulation order or the start is changed from large to small.
  • the target MCS is determined; or when the transport block set index I TBS is reserved, the target MCS is determined; or when the retransmission is at this time, the target MCS is determined. Or determine the target MCS when the modulation order or start to change from large to small.
  • the target MCS when the I MCS > 28 or I MCS ⁇ 29, the target MCS is determined; or when the transport block set index I TBS is reserved, the target MCS is determined; or when the retransmission is at this time, Determining the target MCS; or determining the target MCS when the modulation order is reserved; or determining the target MCS when the redundancy version number RVidx is 1, 2 or 3.
  • the target MCS when the I MCS > 28 or I MCS ⁇ 29, the target MCS is determined; or when the transport block set index I TBS is reserved, the target MCS is determined; or when the retransmission is at this time, Determining the target MCS; or determining the target MCS when the modulation order is reserved; or determining the target MCS when the redundancy version number RVidx is 1, 2 or 3.
  • the target MCS when the I MCS > 28 or I MCS ⁇ 29, the target MCS is determined; or when the transport block set index I TBS is reserved, the target MCS is determined; or when the retransmission is at this time, Determining the target MCS; or determining the target MCS when the modulation order is reserved; or determining the target MCS when the redundancy version number RVidx is 1 to 7.
  • the target MCS is determined; or when the transport block set index I TBS is reserved, the target MCS is determined; or when the retransmission is at this time, Determining the target MCS; or determining the target MCS when the modulation order is reserved; or determining the target MCS when the redundancy version number RVidx is 1 to 7.
  • the target MCS is determined; or when the transport block set index I TBS is reserved, the target MCS is determined; or when the retransmission is at this time, Determining the target MCS; or determining the target MCS when the modulation order begins to change from large to large; or determining the target MCS when the code rate is reserved.
  • the target MCS is determined, and the index value of the target MCS is smaller than the index value of the current MCS;
  • the phase tracking reference signal PTRS is mapped to one or more symbols, or a plurality of subcarriers, according to the target MCS.
  • the target MCS is determined, and the index value of the target MCS is smaller than the index value of the current MCS;
  • the phase tracking reference signal PTRS is mapped to one or more symbols, or a plurality of subcarriers, according to the target MCS.
  • the target MCS is determined according to the modulation and coding mode MCS used by the retransmitted data, and the index value of the target MCS is smaller than the index value of the MCS used by the current data.
  • a phase tracking reference signal PTRS is mapped to one or more symbols or a plurality of subcarriers according to the target MCS.
  • the target MCS is determined, and the index value of the target MCS is smaller than the index value of the current MCS;
  • a phase tracking reference signal PTRS is mapped to one or more symbols or a plurality of subcarriers according to the target MCS.
  • the index value of the currently used MCS is the maximum of the plurality of MCSs corresponding to the corresponding modulation order, determine the target MCS;
  • the phase tracking reference signal PTRS is mapped to one or more symbols or a plurality of subcarriers according to the target MCS.
  • MCS refers to a modulation and coding mode adopted by data, which can be indicated by an MCS index value.
  • MCS can determine the MCS based on channel conditions (eg, signal to noise ratio). In general, the larger the signal to noise ratio, the larger the MCS index value.
  • the current MCS is notified by the network device through downlink signaling, for example, the DCI is notified by the DCI of the specific MCS index value.
  • the target MCS has multiple implementation manners, for example:
  • the specific implementation manner of determining the target MCS may be: determining a target modulation order according to the current MCS; determining, according to the correspondence relationship between the modulation order and the MCS, the MCS corresponding to the target modulation order as the target MCS. .
  • the target modulation order is the modulation order corresponding to the current MCS.
  • the mapping relationship between the MCS and the modulation order is the first column and the second column in Table 1
  • the mapping relationship between the MCS and the transport block set index is the first column and the fourth column in Table 1
  • the current The MCS is 29, and the predetermined threshold is 28, and according to the current MCS, the target modulation order is determined to be 2, that is, the target modulation order is the modulation order corresponding to 29.
  • the network device determines, according to the mapping relationship between the MCS of the first column in Table 1 and the modulation order of the second column, the MCS of less than 28 corresponding to the target modulation order 2 as the target MCS, that is, one of the MCSs of 0-9.
  • the MCS is determined to be the target MCS.
  • determining a maximum MCS of the plurality of MCSs that are less than or equal to a predetermined threshold corresponding to the target modulation order is determined as the target MCS. For example, if the MCS of the target modulation order 2 corresponding to less than the predetermined threshold is 0 to 9, 9 is determined as the target MCS.
  • the target MCS less than or equal to the predetermined threshold can be determined, thereby facilitating flexible configuration of the time-frequency density of the PTRS, and facilitating the PTRS overhead while ensuring system performance.
  • the target modulation order corresponds to multiple MCSs
  • the smallest MCS of the plurality of MCSs that are less than or equal to the predetermined threshold corresponding to the target modulation order is determined as the target MCS. For example, if the MCS corresponding to the target modulation order 2 is 0 to 9, 0 is determined as the target MCS.
  • the target MCS less than or equal to the predetermined threshold can be determined, thereby facilitating flexible configuration of the time-frequency density of the PTRS, and facilitating the reduction of the PTRS overhead.
  • the target MCS may be any MCS except the largest and smallest MCS among the plurality of MCSs corresponding to the target modulation order and less than or equal to the predetermined threshold.
  • the target modulation order may be any one of 1 to 8.
  • the specific implementation manner of the target MCS may be: using the first MCS or the last MCS as the target MCS.
  • the first MCS may be the MCS of the initial number of bits.
  • the last MCS may be the MCS that last mapped the PTRS.
  • the target MCS is still 23.
  • the target MCS is still 25.
  • the specific implementation manner of determining the target MCS may be: using a predetermined threshold as the target MCS. For example, if the predetermined threshold is 27, 27 is the target MCS; if the predetermined threshold is 28, 28 is the target MCS.
  • the larger the target MCS the larger the time-frequency density of the determined PTRS, and thus the system performance can be guaranteed. Therefore, by implementing the implementation manner, the target MCS less than or equal to the predetermined threshold can be determined, thereby facilitating flexible configuration of the time-frequency density of the PTRS, and facilitating the PTRS overhead while ensuring system performance.
  • the specific implementation manner of determining the target MCS may be: determining the target MCS according to the current number of bits to be transmitted and the current scheduling bandwidth.
  • the target MCS less than or equal to the predetermined threshold can be determined, thereby facilitating flexible configuration of the time-frequency density of the PTRS, and facilitating the reduction of the PTRS overhead.
  • the number of bits that need to be transmitted is used as the transport block size that needs to be transmitted currently, and may be determined according to the mapping relationship between the transport block size, the scheduling bandwidth, and the transport block set index.
  • the target transport block set index corresponding to the transport block size and the current scheduling bandwidth; determining the MCS corresponding to the target transport block set index as the target MCS according to the mapping relationship between the MCS and the transport block set index.
  • the mapping relationship between the MCS and the modulation order is the first column and the second column in Table 1
  • the mapping relationship between the MCS and the transport block set index is the first column and the fourth column in Table 1
  • the current MCS is 30.
  • the predetermined threshold is 28, and the network device acquires the number of bits (such as 4968 bits) to be transmitted, and the current scheduling bandwidth (such as 8 resource blocks).
  • the number of bits to be transmitted is regarded as the transport block size.
  • the current transport equivalent target transport block set index is 24.
  • the transport block set index 24 corresponds to a unique MCS of 26, and thus 26 is the target MCS.
  • the target modulation order corresponding to the current MCS may be determined, and the target transmission is performed.
  • the MCS corresponding to the target modulation order is used as the target MCS.
  • the mapping relationship between the MCS and the modulation order is the first column and the second column in Table 1
  • the mapping relationship between the MCS and the transport block set index is the first column and the fourth column in Table 1.
  • the current MCS is 30, and the predetermined threshold is 28, and the network device determines, according to the mapping relationship between the transport block size, the scheduling bandwidth, and the transport block set index, the target transport block corresponding to the current transport block size and the current scheduling bandwidth that need to be transmitted at the same time.
  • the collection index is 15.
  • the MCS corresponding to the target transport block set index 15 is 16 and 17.
  • the current MCS (ie, 30) corresponds to a target modulation order of 4
  • the MCS16 corresponds to a modulation order of 4
  • the MCS17 corresponds to a modulation order of 6, so 16 is taken as the target MCS.
  • the number of bits that need to be transmitted may be the transport block size of the previous or initial transmission in the traditional LTE, or the code block group retransmitted in the fifth generation new radio (5G NR).
  • the process of acquiring the code block group may be configured by the network side, or may be calculated by combining the coding rate of the last transmission, the current modulation order, and the current scheduling bandwidth.
  • the specific implementation manner of the target MCS may be: determining, by using the physical downlink control channel, an MCS that is less than or equal to a predetermined threshold, as the target MCS.
  • the target MCS less than or equal to the predetermined threshold can be determined, thereby facilitating flexible configuration of the time-frequency density of the PTRS, and facilitating the reduction of the PTRS overhead.
  • the MCS of the physical downlink control channel configuration is acquired. If the MCS of the physical downlink control channel configuration is 20 (ie, less than the predetermined threshold 28), 20 is determined as the target MCS.
  • the MCS configured on the physical downlink control channel may be an MCS configured for the most recent semi-static physical downlink control channel.
  • the execution body of the wireless communication method is a terminal device, it is determined that the target MCS has multiple implementation manners, such as any one of the second to fifth implementation modes mentioned above, and no longer Narration.
  • the time domain density of the PTRS may be determined according to the relationship between the target MCS, the MCS threshold, and the PTRS time domain density, and then the PTRS is mapped to one or more according to the time domain density of the PTRS.
  • the symbol may be an orthogonal frequency division multiplexing (OFDM) symbol, or a symbol of a single carrier, which is not limited in this embodiment.
  • OFDM orthogonal frequency division multiplexing
  • the processing in the frequency domain may be determined according to the table described in Table 10, or may be according to other methods described in the prior art or standard proposal. to make sure.
  • the relationship between the MCS threshold and the PTRS time domain density is as shown in Table 2, and the threshold value. 6, the threshold 10, threshold Is 17, threshold Is 28. If the target MCS is 5, the target MCS is greater than or equal to 0, and is less than The interval corresponding to the interval has a time domain density of zero. Therefore, the target MCS is 5, the time domain density of the PTRS is determined to be 0, and the PTRS symbol is not mapped in the time domain. Similarly, if the target MCS is 9, the target MCS is greater than or equal to And less than The interval of the interval corresponds to a time domain density of 1/4.
  • the target MCS is 9, the time domain density of the PTRS is determined to be 1/4, and the PTRS is mapped onto the symbol with a time domain density of 1/4 in the time domain.
  • the target MCS is 15, the target MCS is greater than or equal to And less than The interval of the interval corresponds to a time domain density of 1/2. Therefore, the target MCS is 15, the time domain density of the PTRS is determined to be 1/2, and the PTRS is mapped onto the symbol by the time domain density 1/2 in the time domain.
  • the target MCS is 20, the target MCS is greater than or equal to And less than or equal to The interval of the interval corresponds to a time domain density of 1. Therefore, the target MCS is 20, the time domain density of the PTRS is determined to be 1, and the PTRS is mapped onto the symbol with the time domain density 1 in the time domain.
  • FIG. 3 is a schematic diagram of different time-frequency resource mappings of PTRS.
  • (a) in FIG. 3 is a schematic diagram of mapping of time-frequency resources of the current PTRS.
  • the time-frequency resource of the PTRS is determined according to the target MCS and the relationship between the MCS threshold and the PTRS time domain density.
  • the determined PTRS time-frequency resource may be (b) in FIG. 3 or (c) in FIG. 3.
  • the frequency domain density of PTRS is 1 (one PTRS per 12 subcarriers) and the time domain density is 1.
  • the frequency domain density of PTRS is 1 (one PTRS per 12 subcarriers), and the time domain density is 1/2.
  • the frequency domain density of PTRS is 1/2 ( There is one PTRS per 24 subcarriers, and the time domain density is 1. It can be seen that the time-frequency resource of the PTRS is flexibly adjusted according to the target MCS, and the resource overhead of the PTRS is reduced.
  • symbols or subcarriers to which the PTRS is mapped may also be transmitted.
  • the network device may also transmit the symbols or subcarriers to which the PTRS is mapped to the terminal device.
  • the terminal device maps the PTRS to one or more symbols or subcarriers according to the target MCS, the terminal device may also transmit the symbol or subcarrier to which the PTRS is mapped to the network device.
  • the execution body of the foregoing method may be a network device or a terminal device.
  • the corresponding method is downlink; when the execution body of the foregoing method is a terminal device, the corresponding method is uplink.
  • the terminal side may pre-store or pre-configure the above Tables 1 to 4.
  • any one of the above Tables 5 to 8 may be pre-configured or pre-stored in the memory of the terminal.
  • the value of the current MCS can be received by using downlink signaling.
  • the signaling has a 5-bit or 6-bit field, which is used to indicate the value of the modulation and coding mode of the current data of the terminal.
  • a target MCS less than or equal to a predetermined threshold can be determined, so that the target MCS and the association between the MCS threshold and the PTRS time domain density can be determined according to the target MCS. Relationships, flexibly determine the density of PTRS on time-frequency resources, thereby helping to reduce the resource overhead of reducing PTRS.
  • the embodiment of the invention further provides a wireless communication method, wherein the wireless communication method can be applied to a terminal device or a network device.
  • the wireless communication method includes the following sections 210-203, wherein:
  • the method further includes:
  • the downlink signaling including information indicating the current MCS.
  • the downlink signaling is DCI
  • the current MCS occupies 5 or 6 bits.
  • Step 230 Acquire the PTRS from the one or more symbols or multiple subcarriers according to the target MCS, specifically:
  • FIG. 2C is another wireless communication method provided by an embodiment of the present application.
  • the wireless communication method can be applied to a network device or a terminal device.
  • the wireless communication method includes the following 21 to 22 parts, wherein:
  • the code rate corresponding to the current modulation and coding mode MCS is reserved, determine the time domain density of the PTRS according to the pre-stored or predefined mapping relationship between the MCS and the time domain density; or according to when the code rate is reserved. Determining a time-domain density of the PTRS by a modulation order or a mapping relationship between the modulation mode and the time domain density;
  • phase tracking reference signal PTRS Mapping the phase tracking reference signal PTRS to one or more symbols based on the determined time domain density.
  • a pre-stored or predefined mapping table between the MCS and the time domain density is as shown in Table 12 below:
  • a pre-stored or predefined mapping table of the MCS and the time domain density is as shown in Table 15 below:
  • a pre-stored or predefined mapping table of modulation orders or modulation modes and time domain densities when the code rate is reserved is as shown in Table 18 below:
  • Modulation order or modulation mode Time domain density 2 or QPSK 1/2 4 or 16QAM 1 6 or 64QAM 1 8 or 256QAM 1
  • Modulation order or modulation mode Time domain density 2 or QPSK 1/4 4 or 16QAM 1/2 6 or 64QAM 1 8 or 256QAM 1
  • the MCS is not referred to at this time, but the modulation order or the modulation mode is referred to.
  • the corresponding modulation order is 2nd order, the time domain density is 0, that is, the PTRS symbol is not mapped; when the code rate is reserved, the corresponding modulation order is 4th order, and the time domain density is 1/1.
  • mapping relationship may be configured by the network device to the terminal device by using RRC signaling or MAC-CE.
  • the embodiment of the invention further provides a wireless communication method, wherein the wireless communication method can be applied to a terminal device or a network device.
  • the wireless communication method includes the following sections 24-26, wherein:
  • the time domain density of the PTRS is determined according to a pre-stored or predefined mapping relationship between the MCS and the time domain density; or when the code rate is reserved. Determining a modulation order or a mapping relationship between the modulation mode and the time domain density, and determining a time domain density of the PTRS;
  • the method further includes:
  • the downlink signaling including information indicating the current MCS.
  • the downlink signaling is DCI
  • the current MCS occupies 5 or 6 bits.
  • the embodiment of the present invention may divide the functional unit into the device according to the foregoing method example.
  • each functional unit may be divided according to each function, or two or more functions may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit. It should be noted that the division of the unit in the embodiment of the present invention is schematic, and is only a logical function division, and the actual implementation may have another division manner.
  • FIG. 4 is a schematic structural diagram of an apparatus according to an embodiment of the present invention.
  • the device may be the device of the above method embodiments.
  • the device includes a communication module 401 and a processing module 402. among them:
  • the processing module 402 is configured to determine, if the current modulation and coding mode MCS exceeds a predetermined threshold, the target MCS, where the target MCS is an MCS that is less than or equal to a predetermined threshold.
  • the processing module 402 is further configured to map the phase tracking reference signal PTRS to one or more symbols or subcarriers according to the target MCS.
  • the manner in which the processing module 402 determines the target MCS is specifically: determining a target modulation order according to the current MCS, and determining, according to the correspondence relationship between the modulation order and the MCS, the MCS corresponding to the target modulation order as the target MCS.
  • the processing module 402 determines, according to the correspondence relationship between the modulation order and the MCS, the MCS corresponding to the target modulation order as the target MCS, where the target modulation order corresponds to multiple MCSs, and the target modulation order corresponds to The largest MCS of the plurality of MCSs is determined as the target MCS.
  • the processing module 402 determines, according to the correspondence relationship between the modulation order and the MCS, the MCS corresponding to the target modulation order as the target MCS, where the target modulation order corresponds to multiple MCSs, and the target modulation order corresponds to The smallest MCS of the plurality of MCSs is determined as the target MCS.
  • the manner in which the processing module 402 determines the target MCS is specifically: the MCS used in the first MCS or the previous MCS or the data in the initial transmission is used as the target MCS.
  • the manner in which the processing module 402 determines the target MCS is specifically: using a predetermined threshold as the target MCS.
  • the manner in which the processing module 402 determines the target MCS is specifically: determining the target MCS according to the number of bits currently required to be transmitted and the scheduling bandwidth.
  • the manner in which the processing module 402 determines the target MCS is specifically: determining, by using the physical downlink control channel, an MCS that is less than or equal to a predetermined threshold, as the target MCS.
  • the principle that the session processing device is provided in the embodiment of the present invention is similar to the session processing method in the method embodiment of the present invention. Therefore, the implementation of the session processing device can refer to the implementation of the method. I won't go into details here.
  • the processing module 402 is configured to: when the code rate corresponding to the current modulation and coding mode MCS is reserved, according to a pre-stored or predefined mapping relationship between MCS and time domain density, determine the time of the PTRS. Domain density; or determining a time domain density of the PTRS according to a mapping table corresponding to a modulation order or a modulation mode and a time domain density when the code rate is reserved;
  • the processing module 402 is further configured to map the phase tracking reference signal PTRS to one or more symbols according to the determined time domain density.
  • the principle that the session processing device is provided in the embodiment of the present invention is similar to the session processing method in the method embodiment of the present invention. Therefore, the implementation of the session processing device can refer to the implementation of the method. I won't go into details here.
  • FIG. 5 is a schematic structural diagram of a device disclosed in an embodiment of the present application.
  • the apparatus 500 includes a processor 501, a memory 502, and a communication interface 503.
  • the processor 501, the memory 502 and the communication interface 503 are connected.
  • the processor 501 can be a central processing unit (CPU), a general purpose processor, a coprocessor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC). , field programmable gate array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof.
  • CPU central processing unit
  • DSP digital signal processor
  • ASIC application-specific integrated circuit
  • FPGA field programmable gate array
  • the communication interface 503 is used to implement communication with other network elements, such as terminal devices.
  • the processor 501 calls the program code stored in the memory 502 to perform any one or more steps that can be performed by the network device as described in FIG. 2A to FIG. 2D in the foregoing method embodiment.
  • FIG. 6 is a schematic structural diagram of a device according to an embodiment of the present invention.
  • the device may be the device of the above method embodiments.
  • the device includes a transceiver module 601 and a processing module 602. among them:
  • the transceiver module 601 is configured to receive one or more orthogonal frequency division multiplexing OFDM symbols, where the one or more OFDM symbols include a phase tracking reference signal PTRS;
  • the processing module 602 is configured to determine, if the modulation and coding mode MCS used by the data included in the one or more OFDM symbols exceeds a predetermined threshold, a target MCS, and obtain, according to the target MCS, the one or more OFDM symbols. PTRS.
  • the device may be a network device or a terminal device, and may also be a chip.
  • the transceiver module 601 can be a transceiver; when the device is a chip, the transceiver module 601 can be an input/output circuit of the chip.
  • the transceiver module 601 is further configured to: receive information for indicating an MCS used by data included on the one or more OFDM symbols.
  • the device further includes a storage module 603, configured to store correspondence relationship information between the MCS and the modulation order.
  • the information about the correspondence between the MCS and the modulation order may be as shown in Tables 1 to 8 provided above, and details are not described herein again.
  • the processing module 602 is specifically configured to: determine, according to a modulation and coding mode MCS used by the data included in the one or more OFDM symbols, a target modulation order; according to the correspondence relationship between the modulation order and the MCS, The MCS corresponding to the target modulation order is determined as the target MCS.
  • the processing module 602 is further configured to: when the target modulation order corresponds to multiple MCSs, determine a maximum MCS of the plurality of MCSs corresponding to the target modulation order as a target MCS, or when the target modulation The order corresponds to a plurality of MCSs, and the smallest MCS among the plurality of MCSs corresponding to the target modulation order is determined as the target MCS.
  • the processing module 602 is specifically configured to: use the first MCS or the last MCS as the target MCS or the MCS used in the initial transmission as the target MCS.
  • the processing module 602 is specifically configured to: obtain a time domain density of the PTRS according to a target MCS, and a correspondence relationship between the MCS and the PTRS time domain density; and obtain the PTRS according to the time domain density of the PTRS.
  • the processing module 602 is specifically configured to: use a predetermined threshold as the target MCS.
  • the processing module 602 is specifically configured to determine the target MCS according to the number of bits currently required to be transmitted and the scheduling bandwidth.
  • the processing module 602 is specifically configured to determine, by using the physical downlink control channel, an MCS that is less than or equal to a predetermined threshold, as the target MCS.
  • the principle that the session processing device is provided in the embodiment of the present invention is similar to the session processing method in the method embodiment of the present invention. Therefore, the implementation of the session processing device can refer to the implementation of the method. I won't go into details here.
  • the transceiver module 601 is configured to receive one or more symbols or multiple subcarriers, where the one or more symbols or multiple subcarriers are mapped with a PTRS, and a time domain density of the PTRS is related to a modulation and coding mode MCS.
  • the processing module 602 is configured to determine a time domain density of the PTRS according to a pre-stored or predefined mapping relationship between the MCS and the time domain density, if the code rate corresponding to the current modulation and coding mode MCS is reserved, or according to the code a ratio of a modulation order corresponding to a reserved modulation order or a modulation mode to a time domain density, determining a time domain density of the PTRS; and, according to the time domain density of the PTRS, from the one or more symbols or multiple sub- The PTRS is acquired on a carrier.
  • the principle that the session processing device is provided in the embodiment of the present invention is similar to the session processing method in the method embodiment of the present invention. Therefore, the implementation of the session processing device can refer to the implementation of the method. I won't go into details here.
  • FIG. 7 is a schematic structural diagram of a device disclosed in an embodiment of the present application.
  • the apparatus 700 includes a processor 701, a memory 702, and a communication interface 703.
  • the processor 701, the memory 702 and the communication interface 703 are connected.
  • the processor 701 may be a central processing unit (CPU), a general-purpose processor, a coprocessor, a digital signal processor (DSP), or an application-specific integrated circuit (ASIC). , field programmable gate array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof.
  • CPU central processing unit
  • DSP digital signal processor
  • ASIC application-specific integrated circuit
  • FPGA field programmable gate array
  • the communication interface 703 is used to implement communication with other network elements, such as terminal devices.
  • the processor 701 calls the program code stored in the memory 702, and can perform any one or more steps that can be performed by the terminal device, as described in FIG. 2A to FIG. 2D in the foregoing method embodiment.
  • the principle of the device provided in the embodiment of the present application is similar to the method embodiment of the present application. Therefore, the implementation of the device can be referred to the implementation of the method, and is not described here.
  • the above embodiments it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • a software program it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transmission to another website site, computer, server or data center via wired (eg coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg infrared, wireless, microwave, etc.).
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device that includes one or more servers, data centers, etc. that can be integrated with the media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)) or the like.
  • a magnetic medium eg, a floppy disk, a hard disk, a magnetic tape
  • an optical medium eg, a DVD
  • a semiconductor medium such as a solid state disk (SSD)

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

Abstract

La présente invention concerne, dans son mode de réalisation, un procédé et un appareil de communication sans fil. Le procédé comporte les étapes consistant: si un schéma de modulation et de codage MCS actuel dépasse un seuil prédéterminé, à déterminer un MCS cible, le MCS cible étant un MCS inférieur ou égal au seuil prédéterminé; faire correspondre un signal de référence de poursuite de phase PTRS à un ou plusieurs symboles ou sous-porteuses selon le MCS cible; et envoyer le symbole ou la sous-porteuse auquel correspond le PTRS à un dispositif terminal. Il peut être observé qu'en mettant en œuvre le mode de réalisation de la présente invention, lorsque le MCS actuel dépasse le seuil prédéterminé, un MCS cible qui est inférieur ou égal au seuil prédéterminé peut être déterminé, de sorte que la densité de PTRS sur des ressources temps-fréquence peut être déterminée avec souplesse selon le MCS cible et la relation associative entre le seuil de MCS et la densité de PTRS dans le domaine temporel, ce qui facilite la réduction de la surcharge en ressources de PTRS.
PCT/CN2018/085520 2017-05-04 2018-05-04 Procédé et appareil de communication sans fil WO2018202106A1 (fr)

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EP18794392.3A EP3618337B1 (fr) 2017-05-04 2018-05-04 Procédé et appareil de communication sans fil
EP21159839.6A EP3902184A1 (fr) 2017-05-04 2018-05-04 Procédé et appareil de communication sans fil
US16/673,544 US11082150B2 (en) 2017-05-04 2019-11-04 Wireless communication method and apparatus for mapping a phase tracking reference signal based on a target modulation and coding scheme index
US17/374,672 US11855771B2 (en) 2017-05-04 2021-07-13 Method and apparatus for determining modulation and coding scheme

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CN201710309617.5 2017-05-04
CN201710309617 2017-05-04
CN201710453333 2017-06-15
CN201710453333.3 2017-06-15
CN201711106456.6A CN108809601B (zh) 2017-05-04 2017-11-10 无线通信方法及装置
CN201711106456.6 2017-11-10

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020238530A1 (fr) * 2019-05-27 2020-12-03 Qualcomm Incorporated Configuration de signal de référence de suivi de phase pour une procédure d'accès aléatoire
CN112655171A (zh) * 2020-09-07 2021-04-13 华为技术有限公司 一种参考信号传输方法及装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103891166A (zh) * 2011-09-30 2014-06-25 交互数字专利控股公司 无线通信中的多点传输
EP2938124A1 (fr) * 2012-12-21 2015-10-28 KYOCERA Corporation Système de communication mobile, procédé de commande de communication, station de base, terminal d'utilisateur, et processeur
WO2016208899A1 (fr) * 2015-06-21 2016-12-29 엘지전자 주식회사 Procédé d'attribution de puissance de liaison descendante pour une émission must dans un système de communication sans fil et appareil associé

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103891166A (zh) * 2011-09-30 2014-06-25 交互数字专利控股公司 无线通信中的多点传输
EP2938124A1 (fr) * 2012-12-21 2015-10-28 KYOCERA Corporation Système de communication mobile, procédé de commande de communication, station de base, terminal d'utilisateur, et processeur
WO2016208899A1 (fr) * 2015-06-21 2016-12-29 엘지전자 주식회사 Procédé d'attribution de puissance de liaison descendante pour une émission must dans un système de communication sans fil et appareil associé

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
NTT DOCOMO, INC.: "Status Report of Study on New Radio Access Technology", 3GPP TSG RAN MEETING #74 RP-162201, 29 November 2016 (2016-11-29), XP055513255 *
See also references of EP3618337A4 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020238530A1 (fr) * 2019-05-27 2020-12-03 Qualcomm Incorporated Configuration de signal de référence de suivi de phase pour une procédure d'accès aléatoire
CN112655171A (zh) * 2020-09-07 2021-04-13 华为技术有限公司 一种参考信号传输方法及装置

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