WO2020239062A1 - Procédé et appareil de communication - Google Patents

Procédé et appareil de communication Download PDF

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Publication number
WO2020239062A1
WO2020239062A1 PCT/CN2020/093194 CN2020093194W WO2020239062A1 WO 2020239062 A1 WO2020239062 A1 WO 2020239062A1 CN 2020093194 W CN2020093194 W CN 2020093194W WO 2020239062 A1 WO2020239062 A1 WO 2020239062A1
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Prior art keywords
frequency domain
mapping
data
reference signal
pattern information
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PCT/CN2020/093194
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English (en)
Chinese (zh)
Inventor
刘曦
莫勇
张福强
黎超
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华为技术有限公司
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Publication of WO2020239062A1 publication Critical patent/WO2020239062A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]

Definitions

  • the embodiments of the present application relate to the field of communication technologies, and in particular, to a communication method and device.
  • V2X Vehicle to Everything
  • the types of time-frequency resources used for data transmission in the new radio technology (NR)-V2X communication system are relative to the long-term evolution (long term evolution,
  • the types of time-frequency resources in V2X are more abundant.
  • the LTE-V2X communication system includes time-frequency resources with sub-carrier spacing (SCS) of 15 kHz, 30 kHz, and 60 kHz. Based on this, how to ensure the utilization of various time-frequency resources corresponding to NR-V2X when used for parameter signal and/or data transmission is an urgent problem to be solved.
  • SCS sub-carrier spacing
  • the present application provides a communication method and device to ensure the utilization of time-frequency resources for data transmission.
  • the present application provides a communication method applied to a first terminal device, including: acquiring first frequency domain mapping pattern information, where the first frequency domain mapping pattern includes first reference signal mapping pattern information and first data mapping pattern information,
  • the first reference signal mapping pattern information is used to indicate a pattern of mapping reference signals in a frequency domain resource of an orthogonal frequency division multiplexing OFDM symbol
  • the first data mapping pattern information is used to indicate the frequency of an OFDM symbol.
  • the first reference signal mapping style information is one of at least two types of reference signal mapping style information
  • the first data mapping style information is one of the at least two types of data mapping style information
  • the reference signal and/or data are mapped in the frequency domain resource of at least one OFDM symbol in the first time-frequency resource
  • the terminal device sends the reference signal and/or the data.
  • the reference signal is an automatic gain control AGC reference signal
  • the reference signal is a demodulation reference signal DMRS.
  • the frequency domain mapping style information includes reference signal style information and data mapping style information, and there are at least two types of reference signal style information and at least two data mapping style information, one OFDM symbol corresponds to multiple frequency domain mappings. Style information.
  • the first terminal device can flexibly select a frequency domain mapping matching the current data transmission characteristics from a variety of frequency domain mapping style information according to the current data transmission characteristics such as SCS (real-time domain resource type) corresponding to the current data transmission Pattern information; wherein, the frequency domain mapping pattern information that matches the current data transmission feature refers to: according to the frequency domain mapping pattern information, when the reference signal and/or data is mapped in the frequency domain resource of an OFDM symbol, it can guarantee the current data On the basis of transmission performance, while ensuring the utilization of time-frequency resources for current data transmission. Therefore, the method of this embodiment can ensure the utilization of time-frequency resources for current data transmission.
  • the manner in which the first terminal device obtains the first frequency domain mapping pattern information includes but is not limited to the following two implementation manners:
  • the first implementation manner: the acquiring first frequency domain mapping pattern information includes: receiving the first frequency domain mapping pattern information from a network device.
  • This embodiment is applicable to a scenario where the first terminal device is within the coverage of a cellular communication network, and the power consumption of the first terminal device is low.
  • the acquiring first frequency domain mapping pattern information includes: determining the first reference signal mapping pattern information from the at least two kinds of reference signal mapping pattern information, and the at least two kinds of reference signal mapping pattern information
  • the style information is predefined or configured by high-level signaling; the first data mapping style information is determined from the at least two types of data mapping style information, and the at least two types of data mapping style information are predefined, or Configured by higher layer signaling.
  • This implementation manner is applicable to a scenario where the first terminal device is not within the coverage of the cellular communication network.
  • the method further includes: sending the first frequency domain mapping pattern information to the second terminal device.
  • This solution can enable the second terminal device to learn the frequency domain mapping pattern information of the reference signal and data mapped by the first terminal device, so that the second terminal device can correctly receive the reference signal and/or data sent by the first terminal device.
  • every N consecutive resource particle REs in the frequency domain resources of an OFDM symbol are a mapping group, and the N REs in the mapping group include M REs used for mapping reference signals, M ⁇ N, where N is a positive integer, and M is an integer;
  • the first reference signal mapping pattern information includes information indicating that N consecutive REs are a mapping group;
  • the first reference signal mapping pattern information includes information indicating that there is no RE for mapping reference signals in the frequency domain resources of one OFDM symbol; or, the first reference signal mapping pattern information includes information indicating that one OFDM symbol is There is information about REs used for mapping reference signals in the frequency domain resources; or, the first reference signal mapping pattern information includes information indicating that there are M REs used for mapping reference signals among consecutive N REs.
  • This solution provides several forms of the first reference signal mapping style information.
  • the N is any one of the following: 1, 2, 3, 4, 6, 12; and the M is any one of the following: 0, 1, 2, 3, 4, 6.
  • N in this solution makes it easier for the first terminal device to map the reference signal and/or data on the first time-frequency resource.
  • every N consecutive resource particles RE in the frequency domain resource of an OFDM symbol is a mapping group, and the N is a positive integer;
  • a frequency domain mapping pattern information includes a first preselected frequency domain offset; wherein, the first RE or the last RE in the mapping group is a reference RE, and among the M REs used for mapping reference signals in the mapping group
  • the RE with the least interval between the RE and the reference RE is the start RE
  • the first preselected frequency domain offset is the frequency domain offset between the start RE and the reference RE
  • the M is Positive integer, M ⁇ N.
  • the first frequency domain mapping style information includes the first preselected frequency domain offset, which can reduce signaling overhead.
  • every N consecutive resource particles RE in the frequency domain resource of an OFDM symbol is a mapping group, and the N is a positive integer;
  • a frequency domain mapping pattern information does not include the first preselected frequency domain offset, the first preselected frequency domain offset is the frequency domain offset between the start RE and the reference RE, and the first RE in the mapping group Or the last RE is the reference RE, the RE with the least interval between the RE and the reference RE among the M REs used for mapping reference signals in the mapping group is the start RE, and the M is a positive integer, M ⁇ N;
  • the method further includes: obtaining the first preselected frequency domain offset; according to the first frequency domain mapping pattern information, the frequency domain resource of at least one OFDM symbol in the first time-frequency resource Mapping reference signals and/or data in the medium includes: according to the first frequency domain mapping pattern information and the first preselected frequency domain offset, the frequency domain resource of at least one OFDM symbol in the first time-frequency resource Mapping reference signals and/or data.
  • the first frequency domain mapping style information does not include the first preselected frequency domain offset, which occupies less memory for the first terminal device and the second terminal device.
  • every N consecutive resource particles RE in the frequency domain resource of an OFDM symbol is a mapping group, and the N is a positive integer;
  • a frequency domain mapping style information includes a first frequency domain offset parameter set; the sum of the first parameter included in the first frequency domain offset parameter set and the first preselected frequency domain offset is used for mapping in the mapping group
  • the parameter corresponding to the first RE in the parameter set, the first RE or the last RE in the mapping group is the reference RE, and the first frequency domain offset of the first RE is the The frequency domain offset between the reference REs, the M is a positive integer, and M ⁇ N; the RE with the least interval between the RE and the reference RE among the REs used for mapping the reference signal in the mapping group is the start RE, the first preselected frequency domain offset is the frequency domain offset between the start RE and the reference
  • the first frequency domain mapping style information includes the first frequency domain offset parameter set, which can reduce signaling overhead.
  • every N consecutive resource particles RE in the frequency domain resource of an OFDM symbol is a mapping group, and the N is a positive integer;
  • a frequency domain mapping pattern information does not include the first frequency domain offset parameter set, and the sum of the first parameter included in the first frequency domain offset parameter set and the first preselected frequency domain offset is used in the mapping group.
  • the M is an integer, and M ⁇ N;
  • the RE with the least interval between the RE and the reference RE in the REs used for mapping reference signals in the mapping group is the start RE, the first preselected frequency domain offset is the frequency domain offset between the start RE and the reference RE;
  • the method further includes: obtaining the first frequency domain offset parameter set;
  • the first frequency domain mapping pattern information, mapping reference signals and/or data to the frequency domain resource of at least one OFDM symbol in the first time-frequency resource includes: according to the first frequency domain mapping pattern information and the first frequency domain resource A frequency domain offset parameter set, which maps the reference signal and/or data in the frequency domain resource of at least one OFDM symbol in the first time-frequency resource.
  • the first frequency domain mapping style information does not include the first frequency domain offset parameter set, which occupies less memory for the first terminal device and the second terminal device.
  • every N consecutive resource particles RE in the frequency domain resource of an OFDM symbol is a mapping group, and the N is a positive integer;
  • a frequency domain mapping pattern information includes the first frequency domain offset of each of the M REs used for mapping reference signals in the mapping group; wherein, the first RE or the last RE in the mapping group is the reference RE, for For the first RE in the M REs, the first frequency domain offset of the first RE is the frequency domain offset between the first RE and the reference RE, and the M is a positive integer, and M ⁇ N .
  • the first frequency domain mapping pattern information includes the first frequency domain offsets of the M REs, which can reduce signaling overhead.
  • this solution can also reduce the power consumption of the second terminal device acquiring the RE used for mapping the reference signal.
  • every N consecutive resource particles RE in the frequency domain resource of an OFDM symbol is a mapping group, and the N is a positive integer;
  • a frequency domain mapping pattern information does not include the first frequency domain offset of each of the M REs used for mapping reference signals in the mapping group, and the first RE or the last RE in the mapping group is the reference RE.
  • the method further includes: obtaining the first frequency domain offset of each of the M REs used for mapping reference signals in the mapping group; and the first frequency domain mapping pattern information according to the first frequency domain mapping pattern information
  • Mapping a reference signal and/or data to a frequency domain resource of at least one OFDM symbol in a time-frequency resource includes: according to the first frequency domain mapping pattern information and M REs used for mapping reference signals in the mapping group The respective first frequency domain offsets are mapped to the reference signal and/or data in the frequency domain resource of at least one OFDM symbol in the first time-frequency resource.
  • the first frequency domain mapping style information does not include the first frequency domain offset of each of the M REs used for mapping reference signals in the mapping group, and the memory of the first terminal device and the second terminal device Occupies little.
  • this solution can also reduce the power consumption of the second terminal device acquiring the RE used for mapping the reference signal.
  • every N consecutive resource particles RE in the frequency domain resource of an OFDM symbol is a mapping group, and the N is a positive integer;
  • a data mapping style information includes: the first density of the REs used to map the data in the mapping group; wherein the first density is the number H of the REs used to map the data in the mapping group and the total The ratio of the N, the H is an integer, H ⁇ N; or, the first indication information, the first indication information indicates that one OFDM symbol corresponds to the frequency domain resources in the first frequency domain, except for the mapping of the The REs other than the REs of the reference signal are all REs used to map the data; or, the second indication information, where the second indication information indicates that one of the frequency domain resources in the first frequency domain corresponding to one OFDM symbol is not There is an RE for mapping the data.
  • the first density is one of the following values: 0, 1/2, 2/3, 1/3, 3/4, 2/4, 1/4, 5/6, 4/6, 3/6, 2/6, 1/6, 1/12, 2/12, 3/12, 4/12, 5/12, 6/12, 7/12, 8/12, 9/12, 10/ 12. 11/12.
  • This solution provides several forms of the first data mapping style information.
  • the first frequency domain mapping pattern information includes the second frequency domain offset of each of the H REs used for mapping the data in the mapping group.
  • the H is an integer, H ⁇ N; wherein, the first RE or the last RE in the mapping group is a reference RE, and for any second RE in the H REs, the second RE
  • the second frequency domain offset of the RE is the frequency domain offset between the second RE and the reference RE.
  • the first frequency domain mapping style information includes the respective second frequency domain offsets of the H REs used for mapping data in the mapping group, which can reduce signaling overhead.
  • the first frequency domain mapping pattern information does not include the second frequency domains of each of the H REs used for mapping the data in the mapping group Offset, the first RE or the last RE in the mapping group is the reference RE, and for any second RE in the H REs, the second frequency domain offset of the second RE is the The frequency domain offset between the second RE and the reference RE, where H is an integer, and H ⁇ N; the method further includes: acquiring the second REs of each of the H REs used for mapping the data in the mapping group Frequency domain offset; the mapping reference signals and/or data in the frequency domain resource of at least one OFDM symbol in the first time-frequency resource according to the first frequency domain mapping pattern information includes: according to the first Frequency domain mapping style information and the respective second frequency domain offsets of the H REs used for mapping the data in the mapping group, and a reference signal is mapped in the frequency domain resource of at least one OFDM symbol in the first time-frequency resource And/or data.
  • the first frequency domain mapping style information does not include the respective second frequency domain offsets of the H REs used for mapping data in the mapping group, which occupies less memory for the first terminal device and the second terminal device.
  • an embodiment of the present application provides a communication method applied to a second terminal device, including: receiving first frequency domain mapping pattern information from a first terminal device or a network device, where the first frequency domain mapping pattern includes a A reference signal mapping pattern information and a first data mapping pattern information, the first reference signal mapping pattern information is used to indicate a pattern of mapping reference signals in a frequency domain resource of an orthogonal frequency division multiplexing OFDM symbol, the first A data mapping pattern information is used to indicate a pattern of data mapping in a frequency domain resource of an OFDM symbol; the first reference signal mapping pattern information is one of at least two kinds of reference signal mapping pattern information, and the first data The mapping pattern information is one of at least two types of data mapping pattern information; the first frequency domain mapping pattern information is used by the first terminal device in the frequency domain resource of at least one OFDM symbol in the first time-frequency resource Mapping the reference signal and/or data; and acquiring the reference signal and/or the data on the first time-frequency resource according to the first frequency domain pattern information.
  • the second terminal device receives the first frequency domain mapping pattern information from the first terminal device or the network device, so that the second terminal device can correctly receive the reference signal and/or data sent by the first terminal device.
  • the reference signal is an automatic gain control AGC reference signal, or the reference signal is a demodulation reference signal DMRS.
  • every N consecutive resource particle REs in the frequency domain resources of an OFDM symbol are a mapping group, and the N REs in the mapping group include M REs used for mapping reference signals, M ⁇ N, where N is a positive integer, and M is an integer;
  • the first reference signal mapping pattern information includes information indicating that N consecutive REs are a mapping group;
  • the first reference signal mapping pattern information includes information indicating that there is no RE for mapping reference signals in the frequency domain resources of one OFDM symbol; or, the first reference signal mapping pattern information includes information indicating that one OFDM symbol is There is information about REs used for mapping reference signals in the frequency domain resources; or, the first reference signal mapping pattern information includes information indicating that there are M REs used for mapping reference signals among consecutive N REs.
  • the N is any one of the following: 1, 2, 3, 4, 6, 12; and the M is any one of the following: 0, 1, 2, 3, 4, 6.
  • every N consecutive resource particles RE in the frequency domain resource of an OFDM symbol are a mapping group, and the N is a positive integer;
  • a frequency domain mapping pattern information includes a first preselected frequency domain offset; wherein, the first RE or the last RE in the mapping group is a reference RE, and among the M REs used for mapping reference signals in the mapping group
  • the RE with the least interval between the RE and the reference RE is the start RE
  • the first preselected frequency domain offset is the frequency domain offset between the start RE and the reference RE
  • the M is Positive integer, M ⁇ N.
  • every N consecutive resource particles RE in the frequency domain resource of an OFDM symbol are a mapping group, and the N is a positive integer;
  • a frequency domain mapping pattern information does not include the first preselected frequency domain offset, the first preselected frequency domain offset is the frequency domain offset between the start RE and the reference RE, and the first RE in the mapping group Or the last RE is the reference RE, the RE with the least interval between the RE and the reference RE among the M REs used for mapping reference signals in the mapping group is the start RE, and the M is a positive integer, M ⁇ N;
  • the method further includes: obtaining the first preselected frequency domain offset; the method further includes: obtaining the first preselected frequency domain offset; according to the first frequency domain mapping pattern information , Acquiring the reference signal and/or the data on the first time-frequency resource includes: according to the first frequency domain mapping pattern information and the first preselected frequency domain offset, The reference signal and/or the data are acquired on time-frequency resources.
  • every N consecutive resource particles RE in the frequency domain resource of an OFDM symbol are a mapping group, and the N is a positive integer;
  • a frequency domain mapping style information includes a first frequency domain offset parameter set; the sum of the first parameter included in the first frequency domain offset parameter set and the first preselected frequency domain offset is used for mapping in the mapping group
  • the parameter corresponding to the first RE in the parameter set, the first RE or the last RE in the mapping group is the reference RE, and the first frequency domain offset of the first RE is the The frequency domain offset between the reference REs, the M is a positive integer, and M ⁇ N; the RE with the least interval between the RE and the reference RE among the REs used for mapping the reference signal in the mapping group is the start RE, the first preselected frequency domain offset is the frequency domain offset between the start RE and the reference
  • every N consecutive resource particles RE in the frequency domain resource of an OFDM symbol are a mapping group, and the N is a positive integer;
  • a frequency domain mapping pattern information does not include the first frequency domain offset parameter set, and the sum of the first parameter included in the first frequency domain offset parameter set and the first preselected frequency domain offset is used in the mapping group.
  • the M is an integer, and M ⁇ N;
  • the RE with the least interval between the RE and the reference RE in the REs used for mapping reference signals in the mapping group is the start RE, the first preselected frequency domain offset is the frequency domain offset between the start RE and the reference RE;
  • the method further includes: acquiring the first frequency domain offset parameter set; the method further Including: acquiring the first frequency domain offset parameter set; the acquiring the reference signal and/or the data on the first time-frequency resource according to the first frequency domain mapping pattern information, including: Acquire the reference signal and/or the data on the first time-frequency resource according to the first frequency domain mapping pattern information and the first frequency domain offset parameter set.
  • every N consecutive resource particles RE in the frequency domain resource of an OFDM symbol are a mapping group, and the N is a positive integer;
  • a frequency domain mapping pattern information includes the first frequency domain offset of each of the M REs used for mapping reference signals in the mapping group; wherein, the first RE or the last RE in the mapping group is the reference RE, for For the first RE in the M REs, the first frequency domain offset of the first RE is the frequency domain offset between the first RE and the reference RE, and the M is a positive integer, and M ⁇ N .
  • every N consecutive resource particles RE in the frequency domain resource of an OFDM symbol are a mapping group, and the N is a positive integer;
  • a frequency domain mapping pattern information does not include the first frequency domain offset of each of the M REs used for mapping reference signals in the mapping group, and the first RE or the last RE in the mapping group is the reference RE.
  • the method further includes: obtaining the respective first frequency domain offsets of the M REs used for mapping reference signals in the mapping group; the method further includes: obtaining the The first frequency domain offset of each of the M REs mapping the reference signal; said acquiring the reference signal and/or the data on the first time-frequency resource according to the first frequency domain mapping pattern information , Including: acquiring the reference on the first time-frequency resource according to the first frequency domain mapping pattern information and the respective first frequency domain offsets of the M REs used for mapping reference signals in the mapping group Signal and/or said data.
  • a data mapping style information includes: the first density of the REs used to map the data in the mapping group; wherein the first density is the number H of the REs used to map the data in the mapping group and the total The ratio of the N, the H is an integer, H ⁇ N; or, the first indication information, the first indication information indicates that one OFDM symbol corresponds to the frequency domain resources in the first frequency domain, except for the mapping of the The REs other than the REs of the reference signal are all REs used to map the data; or, the second indication information, where the second indication information indicates that one of the frequency domain resources in the first frequency domain corresponding to one OFDM symbol is not There is an RE for mapping the data.
  • the first density is one of the following values: 0, 1/2, 2/3, 1/3, 3/4, 2/ 4, 1/4, 5/6, 4/6, 3/6, 2/6, 1/6, 1/12, 2/12, 3/12, 4/12, 5/12, 6/12, 7/12, 8/12, 9/12, 10/12, 11/12.
  • the first frequency domain mapping pattern information includes the second frequency domain offset of each of the H REs used for mapping the data in the mapping group.
  • the H is an integer, H ⁇ N; wherein, the first RE or the last RE in the mapping group is a reference RE, and for any second RE in the H REs, the second RE
  • the second frequency domain offset of the RE is the frequency domain offset between the second RE and the reference RE.
  • the first frequency domain mapping pattern information does not include the second frequency domains of the H REs in the mapping group used to map the data.
  • the first RE or the last RE in the mapping group is the reference RE, and for any second RE in the H REs, the second frequency domain offset of the second RE is the The frequency domain offset between the second RE and the reference RE, where H is an integer, and H ⁇ N; the method further includes: acquiring the second REs of each of the H REs used for mapping the data in the mapping group Frequency domain offset; the acquiring the reference signal and/or the data on the first time-frequency resource according to the first frequency domain mapping pattern information includes: according to the first frequency domain mapping pattern Information and the second frequency domain offset of each of the H REs used for mapping the data in the information and mapping group, and the reference signal and/or the data are acquired on the first time-frequency resource.
  • embodiments of the present application provide a communication method applied to a network device, including: acquiring first frequency domain mapping pattern information, where the first frequency domain mapping pattern includes first reference signal mapping pattern information and first data Mapping pattern information, the first reference signal mapping pattern information is used to indicate a pattern of mapping reference signals in a frequency domain resource of an orthogonal frequency division multiplexing OFDM symbol, and the first data mapping pattern information is used to indicate The pattern of mapping data in the frequency domain resources of the OFDM symbol; the first reference signal mapping pattern information is one of at least two types of reference signal mapping pattern information, and the first data mapping pattern information is at least two data mapping patterns One of the information; the first frequency domain mapping style information is used by the first terminal device to map reference signals and/or data in the frequency domain resource of at least one OFDM symbol in the first time-frequency resource, wherein the The first time-frequency resource is used by the first terminal device to send the reference signal and/or the data to the second terminal device; to send the first terminal device and/or the second terminal device A frequency domain mapping style information
  • the frequency domain mapping style information includes reference signal style information and data mapping style information, and there are at least two types of reference signal style information and at least two data mapping style information, one OFDM symbol corresponds to multiple frequency domain mappings. Style information.
  • the network device can flexibly select a frequency domain mapping style information that matches the current data transmission feature from a variety of frequency domain mapping style information according to the current data transmission characteristics such as SCS (real-time domain resource type) corresponding to the current data transmission.
  • SCS real-time domain resource type
  • the frequency domain mapping pattern information that matches the current data transmission feature refers to: according to the frequency domain mapping pattern information, when a reference signal and/or data is mapped in a frequency domain resource of an OFDM symbol, the current data transmission performance can be guaranteed On the basis of this, while ensuring the utilization of time-frequency resources for current data transmission. Therefore, the method of this embodiment can ensure the utilization of time-frequency resources for current data transmission.
  • the acquiring first frequency domain mapping pattern information includes: determining the first reference signal from the at least two kinds of reference signal mapping pattern information Mapping style information, the at least two types of reference signal mapping style information are predefined; determining first data mapping style information from the at least two types of data mapping style information, and the at least two types of data mapping style information are predefined of.
  • the reference signal is an automatic gain control AGC reference signal, or the reference signal is a demodulation reference signal DMRS.
  • every N consecutive resource particle REs in the frequency domain resources of an OFDM symbol are a mapping group, and the N REs in the mapping group include M REs used for mapping reference signals, M ⁇ N, where N is a positive integer, and M is an integer;
  • the first reference signal mapping pattern information includes information indicating that N consecutive REs are a mapping group;
  • the first reference signal mapping pattern information includes information indicating that there is no RE for mapping reference signals in the frequency domain resources of one OFDM symbol; or, the first reference signal mapping pattern information includes information indicating that one OFDM symbol is There is information about REs used for mapping reference signals in the frequency domain resources; or, the first reference signal mapping pattern information includes information indicating that there are M REs used for mapping reference signals among consecutive N REs.
  • the N is any one of the following: 1, 2, 3, 4, 6, 12; and the M is any one of the following: 0, 1, 2, 3, 4, 6.
  • every N consecutive resource particles RE in the frequency domain resource of an OFDM symbol is a mapping group, and the N is a positive integer;
  • a frequency domain mapping pattern information includes a first preselected frequency domain offset; wherein, the first RE or the last RE in the mapping group is a reference RE, and among the M REs used for mapping reference signals in the mapping group
  • the RE with the least interval between the RE and the reference RE is the start RE
  • the first preselected frequency domain offset is the frequency domain offset between the start RE and the reference RE
  • the M is Positive integer, M ⁇ N.
  • every N consecutive resource particles RE in the frequency domain resource of an OFDM symbol is a mapping group, and the N is a positive integer;
  • a frequency domain mapping style information includes a first frequency domain offset parameter set; the sum of the first parameter included in the first frequency domain offset parameter set and the first preselected frequency domain offset is used for mapping in the mapping group
  • the parameter corresponding to the first RE in the parameter set, the first RE or the last RE in the mapping group is the reference RE, and the first frequency domain offset of the first RE is the The frequency domain offset between the reference REs, the M is a positive integer, and M ⁇ N; the RE with the least interval between the RE and the reference RE among the REs used for mapping the reference signal in the mapping group is the start RE, the first preselected frequency domain offset is the frequency domain offset between the start RE and the reference
  • every N consecutive resource particles RE in the frequency domain resource of an OFDM symbol is a mapping group, and the N is a positive integer;
  • a frequency domain mapping pattern information includes the first frequency domain offset of each of the M REs used for mapping reference signals in the mapping group; wherein, the first RE or the last RE in the mapping group is the reference RE, for For the first RE in the M REs, the first frequency domain offset of the first RE is the frequency domain offset between the first RE and the reference RE, and the M is a positive integer, and M ⁇ N .
  • every N consecutive resource particles RE in the frequency domain resource of an OFDM symbol is a mapping group, and the N is a positive integer;
  • a data mapping style information includes: the first density of the REs used to map the data in the mapping group; wherein the first density is the number H of the REs used to map the data in the mapping group and the total The ratio of the N, the H is an integer, H ⁇ N; or, the first indication information, the first indication information indicates that one OFDM symbol corresponds to the frequency domain resources in the first frequency domain, except for the mapping of the The REs other than the REs of the reference signal are all REs used to map the data; or, the second indication information, where the second indication information indicates that one of the frequency domain resources in the first frequency domain corresponding to one OFDM symbol is not There is an RE for mapping the data.
  • the first density is one of the following values: 0, 1/2, 2/3, 1/3, 3/4, 2/ 4, 1/4, 5/6, 4/6, 3/6, 2/6, 1/6, 1/12, 2/12, 3/12, 4/12, 5/12, 6/12, 7/12, 8/12, 9/12, 10/12, 11/12.
  • the first frequency domain mapping pattern information includes the second frequency domain offset of each of the H REs used for mapping the data in the mapping group.
  • the H is an integer, H ⁇ N; wherein, the first RE or the last RE in the mapping group is a reference RE, and for any second RE in the H REs, the second RE
  • the second frequency domain offset of the RE is the frequency domain offset between the second RE and the reference RE.
  • a fourth aspect provides a communication device.
  • the communication device may be a terminal device or a chip in the terminal device.
  • the device may include a processing unit and a transceiving unit.
  • the processing unit may be a processor, and the transceiving unit may be a transceiver;
  • the terminal device may also include a storage unit, and the storage unit may be a memory; the storage unit is used to store instructions ,
  • the processing unit executes the instructions stored in the storage unit, so that the terminal device executes the corresponding function in the first aspect.
  • the processing unit may be a processor, and the transceiver unit may be an input/output interface, a pin or a circuit, etc.; the processing unit executes the instructions stored in the storage unit to make the terminal
  • the device performs the corresponding function in the first aspect above.
  • the storage unit may be a storage unit in the chip (for example, a register, a cache, etc.), or a storage unit outside the chip in the terminal device (for example, only Read memory, random access memory, etc.).
  • a fifth aspect provides a communication device.
  • the communication device may be a network device or a chip in the network device.
  • the device may include a processing unit and a transceiving unit.
  • the processing unit may be a processor, and the transceiving unit may be a transceiver;
  • the network device may also include a storage unit, and the storage unit may be a memory; the storage unit is used to store instructions, and the processing The unit executes the instructions stored in the storage unit, so that the network device executes the corresponding function in the first aspect.
  • the processing unit may be a processor, and the transceiver unit may be an input/output interface, a pin or a circuit, etc.; the processing unit executes the instructions stored in the storage unit to enable the network
  • the device performs the corresponding function in the first aspect above.
  • the storage unit may be a storage unit in the chip (for example, a register, cache, etc.), or a storage unit in the network device located outside the chip (for example, only Read memory, random access memory, etc.).
  • a sixth aspect provides a communication device.
  • the device includes a processor and a storage medium.
  • the storage medium stores instructions.
  • the processor executes the first aspect and the first aspect.
  • the method in any possible implementation manner of the aspect or causes the processor to execute the method in the second aspect and any possible implementation manner of the second aspect, or causes the processor to execute the third aspect and any possibility of the third aspect The method in the implementation.
  • a seventh aspect provides a readable storage medium on which a computer program is stored; when the computer program is executed, it is used to implement the first aspect and the method in any possible implementation manner of the first aspect Or it is used to implement the second aspect and the method in any possible implementation manner of the second aspect or to make the processor execute the third aspect and the method in any possible implementation manner of the third aspect.
  • a seventh aspect provides a computer program product, the computer program product comprising: computer program code, when the computer program code is run on a communication device, the communication device executes the first aspect and any possible aspect of the first aspect
  • the method in the implementation manner of the communication device may cause the communication device to execute the method in the second aspect and any possible implementation manner of the second aspect or the processor to execute the third aspect and any possible implementation manner of the third aspect Methods.
  • the frequency domain mapping pattern information includes reference signal pattern information and data mapping pattern information, and there are at least two types of reference signal pattern information and at least two data mapping pattern information, one OFDM symbol corresponds to multiple frequency domain mappings. Style information.
  • the terminal device or network device that needs to send data can flexibly select one of the current data transmission characteristics from a variety of frequency domain mapping style information according to the current data transmission characteristics such as SCS (real-time domain resource type) corresponding to the current data transmission Matching frequency domain mapping pattern information; wherein, the frequency domain mapping pattern information matching the current data transmission feature refers to: according to the frequency domain mapping pattern information, when a reference signal and/or data is mapped in a frequency domain resource of an OFDM symbol,
  • SCS real-time domain resource type
  • Figure 1 is a schematic diagram of the time-domain format of mapping DMRS in one subframe in the LTE-V2X communication system
  • FIG. 2 is a schematic diagram of a communication system provided by an embodiment of this application.
  • FIG. 3 is a signaling interaction diagram 1 provided by an embodiment of this application.
  • FIG. 4 is a schematic diagram of a mapping group provided by an embodiment of the application.
  • FIG. 5 is a first schematic diagram of a frequency domain mapping pattern provided by an embodiment of this application.
  • FIG. 6 is a second schematic diagram of a frequency domain mapping pattern provided by an embodiment of this application.
  • FIG. 7 is a third schematic diagram of a frequency domain mapping pattern provided by an embodiment of this application.
  • FIG. 8 is a fourth schematic diagram of a frequency domain mapping pattern provided by an embodiment of this application.
  • FIG. 9 is a first flowchart of a communication method provided by an embodiment of this application.
  • FIG. 10 is a second flowchart of a communication method provided by an embodiment of this application.
  • FIG. 11 is a schematic structural diagram of a communication device provided by an embodiment of this application.
  • FIG. 12 is a schematic structural diagram of a communication device provided by another embodiment of this application.
  • FIG. 13 is a schematic structural diagram of a communication device provided by another embodiment of this application.
  • FIG. 14 is a schematic structural diagram of a communication device provided by another embodiment of this application.
  • FIG. 15 is a schematic structural diagram of a terminal device provided by an embodiment of this application.
  • the SCS is a fixed 15kHz.
  • the NR-V2X communication system needs to support a variety of SCS: 15kHz, 30kHz, 60kHz, etc.
  • AGC symbol V2X is a wireless communication system.
  • the terminal equipment needs to adopt automatic gain control (AGC) control technology to adjust the received signal strength to a suitable level within the scope of subsequent processing.
  • AGC automatic gain control
  • the OFDM symbol used for AGC in a time slot or subframe is generally the first symbol of the subframe or time slot.
  • the OFDM symbol used for AGC is called an AGC symbol.
  • the length of the OFDM symbol is different.
  • the SCS is 15KHz and the cyclic prefix (CP) type is Normal CP (Normal CP)
  • the length of the time slot is 1000 microseconds (us)
  • the effective length of the OFDM symbol It is 66.67us.
  • the SCS is 60KHz and the CP type is Normal CP (Normal CP)
  • the length of the time slot is 250 microseconds (us)
  • the effective length of the OFDM symbol is 16.67us.
  • the time required for the terminal device to perform AGC is 15us, and when the SCS is 15KHz, the effective length of the AGC symbol is 66.67us, therefore, the time required for AGC is much shorter than the length of the AGC symbol. Since the terminal equipment will cause the phase of the data signal to change suddenly when performing AGC, if the transmitting end sends a data signal on the AGC symbol at this time, the data signal will not be used for demodulation and decoding due to the influence of AGC. Therefore, most of the time in the AGC symbol period (a period of time that lasts for one AGC symbol) is wasted, that is, the AGC symbol utilization rate is low.
  • the effective length of the AGC symbol is 16.67us, at this time, the AGC symbol utilization rate is high.
  • the mapping method of the signal on the AGC symbol is necessary to adjust the mapping method of the signal on the AGC symbol according to the current data transmission characteristics such as the time domain resource type (such as SCS), so as to ensure the data transmission performance on the basis of ensuring the AGC symbol utilization rate (guarantee AGC symbol
  • the utilization rate can guarantee the purpose of the utilization rate of the time-frequency resources used for data transmission to a certain extent.
  • Current data transmission characteristics may also include: data characteristics (requirements of data for transmission reliability) and/or channel characteristics (such as channel change speed).
  • DMRS symbol In the LTE-V2X communication system, the SCS of 15kHz is fixed. The following uses the physical sidelink shared channel (PSSCH)/physical sidelink control channel (PSCCH) of the LTE-V2X communication system as an example to illustrate the LTE-V2X communication system
  • PSSCH physical sidelink shared channel
  • PSCCH physical sidelink control channel
  • Fig. 1 is a schematic diagram of the time domain format of mapping DMRS in one subframe in the LTE-V2X communication system. Referring to Fig. 1, symbols 2, 5, 8, and 11 are symbols used to map DMRS, and other symbols in the subframe are used to map side uplink data. Among them, the symbols capable of mapping DMRS are referred to as DMRS symbols in this implementation, and symbols 2, 5, 8, and 11 in FIG. 1 are all DMRS symbols.
  • the DMRS mapping method in the frequency domain resources of the DMRS symbols is single, the utilization rate of the time-frequency resources used for data transmission will be low in some data transmission processes. Therefore, it is necessary to adjust the signal mapping method in the frequency domain resources of the DMRS symbol according to the current data transmission characteristics such as the time-domain resource type (such as SCS) corresponding to the time-frequency resource used for the current data transmission, so as to realize the guarantee of data transmission. On the basis of performance, the purpose of ensuring the utilization of time-frequency resources for data transmission at the same time.
  • the time-domain resource type such as SCS
  • Fig. 2 is a schematic diagram of a communication system provided by an embodiment of the application.
  • the communication system includes a network device and multiple terminal devices.
  • the technical solutions of the embodiments of this application can be applied to various communication systems, such as: long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (time division duplex) , TDD), worldwide interoperability for microwave access (WiMAX) communication system, the future 5th generation (5G) system or new radio (NR), etc.
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD time division duplex
  • WiMAX worldwide interoperability for microwave access
  • 5G future 5th generation
  • NR new radio
  • the terminal device in this embodiment may be a terminal device in a V2X communication system
  • the network device may be a network device in a cellular mobile network.
  • Terminal equipment can refer to user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile equipment, user terminal, terminal, wireless communication equipment, user agent or User device.
  • the first terminal device can also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), Handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices with wireless communication functions, terminal devices in the future 5G network or public land mobile network (PLMN) evolved in the future This is not limited by the embodiment of the present application.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • the terminal device of the present application may also be an on-board module, on-board module, on-board component, on-board chip, or on-board unit built into a vehicle as one or more components or units.
  • the vehicle passes through the built-in on-board module, on-board module, An on-board component, on-board chip, or on-board unit can implement the method of the present application.
  • the network device can be a device used to provide wireless communication services to terminal devices.
  • the network device can be a base station (NodeB, NB) in a wideband code division multiple access (WCDMA) system, or an LTE system
  • the evolved base station (evolved NodeB, eNB, or eNodeB) in the cloud radio access network (cloud radio access network, CRAN) scenario can also be a wireless controller, or the network device can be a relay station, an access point, or a vehicle Devices, wearable devices, network devices in future 5G networks, or network devices in future evolved PLMN networks, etc., are not limited in the embodiment of the present application.
  • FIG 3 is a signaling interaction diagram 1 provided by an embodiment of this application. Referring to Figure 3, the method of this embodiment includes:
  • Step S101 The first terminal device obtains first frequency domain mapping style information, where the first frequency domain mapping style information includes first reference signal mapping style information and first data mapping style information, and the first reference signal mapping style information is used to indicate A pattern of mapping reference signals in a frequency domain resource of an OFDM symbol, and the first data mapping pattern information is used to indicate a pattern of mapping data in a frequency domain resource of an OFDM symbol; the first reference signal mapping pattern information is at least two kinds of reference signals One type of mapping style information, and the first data mapping style information is one of at least two types of data mapping style information.
  • one OFDM symbol in this embodiment may be an AGC symbol or a DMRS symbol, and may also be other symbols used for mapping reference signals, which is not limited in this embodiment.
  • the first terminal device in this embodiment is a terminal device in the V2X communication system.
  • the first frequency domain mapping pattern information in this embodiment is the first frequency domain mapping pattern information corresponding to one OFDM symbol in this embodiment.
  • the first frequency domain mapping style information in this embodiment is the mapping feature of the reference signal and/or data in the frequency domain resource of the one OFDM symbol.
  • the mapping feature can be used to determine the frequency domain resource of the one OFDM symbol.
  • Resource Element (RE) for mapping reference signals and/or data.
  • the first reference signal mapping pattern information is used to indicate the pattern of mapping the reference signal in the frequency domain resource of one OFDM symbol; wherein, the pattern of mapping the reference signal in the frequency domain resource of one OFDM symbol may be in the one OFDM symbol.
  • the manner or form or feature of the reference signal mapping in the frequency domain resource of the symbol for example, in the frequency domain resource of the one OFDM symbol, there is one RE for mapping the reference signal for every 6 REs.
  • the first data mapping pattern information is used to indicate the pattern of mapping data in the frequency domain resource of one OFDM symbol; wherein, the pattern of mapping data in the frequency domain resource of one OFDM symbol may be in the frequency domain resource of the one OFDM symbol.
  • the manner or form or feature of the data mapping for example, the density of REs used for mapping data in the frequency domain resource of the one OFDM symbol is 5/6.
  • the first terminal device receives the first frequency domain mapping pattern information from the network device.
  • the network device needs to first obtain the first frequency domain mapping style information, and then send the first frequency domain mapping style information to the first terminal device.
  • acquiring the first frequency domain mapping style information by the network device includes: determining the first reference signal mapping style information from at least two kinds of reference signal mapping style information.
  • the at least two kinds of reference signal mapping style information may be predefined or may be
  • the first data mapping style information is determined from at least two types of data mapping style information.
  • the at least two types of data mapping style information may be predefined or may be configured by high-level signaling.
  • the network device may store at least two types of reference signal style information and at least two types of data mapping style information, and the at least two types of reference signal mapping style information may be predefined Yes, at least two types of data mapping style information can be predefined.
  • one OFDM symbol in this embodiment corresponds to multiple types of frequency domain mapping pattern information, that is, the information of one OFDM symbol in this embodiment
  • the network device can determine the first frequency based on the current data transmission characteristics such as the current SCS and other current data transmission characteristics from multiple frequency domain mapping style information that can ensure data transmission performance while ensuring the utilization of time-frequency resources for data transmission. Domain mapping style information.
  • acquiring the first frequency domain mapping pattern information by the first terminal device includes: determining the first reference signal mapping pattern information from at least two kinds of reference signal mapping pattern information ,
  • the at least two types of reference signal mapping style information may be predefined, or may be configured by high-level signaling; the first data mapping style information is determined from the at least two types of data mapping style information, and the at least two types of data mapping style information may be Pre-defined, or can be configured by higher layer signaling.
  • the first terminal device may store at least two types of reference signal pattern information and at least two types of data mapping pattern information, and at least two types of reference signal mapping pattern information It may be pre-defined or configured through high-level signaling. At least two types of data mapping style information may be pre-defined or configured through high-level signaling.
  • the first terminal device can also determine from multiple frequency domain mapping style information based on current data transmission characteristics such as the current SCS that it can ensure data transmission performance while ensuring time for data transmission.
  • the first frequency domain mapping style information of the utilization rate of frequency resources can also be determined from multiple frequency domain mapping style information based on current data transmission characteristics such as the current SCS that it can ensure data transmission performance while ensuring time for data transmission.
  • Step S102 The first terminal device maps the reference signal and/or data in the frequency domain resource of at least one OFDM symbol in the first time-frequency resource according to the first frequency domain mapping pattern information.
  • the first time-frequency resource is used to send reference signals and/or data.
  • one OFDM symbol corresponding to the first frequency domain mapping pattern information in this embodiment is referred to as the first OFDM symbol. It can be understood that at least one OFDM symbol in the first time-frequency resource includes the first OFDM symbol.
  • the first terminal device After acquiring the first frequency domain mapping pattern information, maps the reference signal and/or data in the frequency domain resources in the first frequency domain corresponding to the first OFDM symbol according to the first frequency domain mapping pattern information , On the second OFDM symbol other than the first OFDM symbol in the at least one OFDM symbol, map the frequency domain resources in the first frequency domain corresponding to the second OFDM symbol according to the frequency domain mapping pattern information of the second OFDM symbol Reference signal and/or data.
  • the first frequency domain range is the frequency domain range corresponding to the first time-frequency resource, and the frequency domain resource in the first frequency domain corresponding to the first OFDM symbol refers to the frequency domain resource corresponding to the first OFDM symbol. Frequency domain resources within the first frequency domain range.
  • the frequency domain mapping pattern information of a type of second OFDM symbol is: all frequency domain resources in the first frequency domain corresponding to the second OFDM symbol are used for mapping data.
  • the frequency domain mapping pattern information maps reference signals and/or data in frequency domain resources within the first frequency domain corresponding to the second type of second OFDM symbol.
  • the first OFDM symbol is an AGC symbol
  • at least one OFDM symbol of the first time-frequency resource may have a DMRS symbol in a second OFDM symbol other than the first OFDM symbol, and the first OFDM symbol is a DMRS.
  • an AGC symbol may exist in a second OFDM symbol other than the first OFDM symbol in at least one OFDM symbol of the first time-frequency resource.
  • Step S103 The first terminal device sends a reference signal and/or data to the second terminal device on the first time-frequency resource.
  • the first terminal device After the first terminal device maps the reference signal and/or data in the frequency domain resource of at least one OFDM symbol in the first time-frequency resource according to the first frequency-domain mapping pattern information, the first terminal device performs the mapping on the first time-frequency resource Send the reference signal and/or data.
  • Step S104 The second terminal device acquires reference signals and/or data on the first time-frequency resource according to the first frequency domain mapping pattern information.
  • the second terminal device in this embodiment may be a terminal of a V2X communication system.
  • the second terminal device may receive the first frequency domain mapping pattern information from the network device, or the second terminal device may receive the first frequency domain mapping pattern information from the first terminal device.
  • Frequency domain mapping style information It can be understood that, when the second terminal device receives the first frequency domain mapping pattern information from the first terminal device, the first terminal device also receives the first frequency domain mapping pattern information from the network device.
  • the second terminal device receives the first frequency domain mapping pattern information from the first terminal device.
  • the second terminal device may determine, according to the first frequency domain mapping pattern information, the RE mapped with the reference signal and/or the RE mapped with the data in the frequency domain resource in the first frequency domain corresponding to the first OFDM symbol, from the mapping Obtain the reference signal from the RE with the reference signal and/or obtain the data from the RE mapped with the data. For the second OFDM symbol, the second terminal device may also obtain data and/or reference signals from frequency domain resources in the first frequency domain corresponding to the second OFDM symbol.
  • the frequency domain mapping pattern information includes reference signal pattern information and data mapping pattern information, and there are at least two kinds of reference signal pattern information and at least two types of data mapping pattern information, one OFDM symbol corresponds to multiple frequency domains. Mapping style information.
  • the network device or the first terminal device can flexibly select the one that matches the current data transmission characteristics from a variety of frequency domain mapping style information according to the current data transmission characteristics such as SCS (real-time domain resource type) corresponding to the current data transmission.
  • SCS real-time domain resource type
  • Frequency domain mapping pattern information wherein, the frequency domain mapping pattern information matching the current data transmission characteristics refers to: according to the frequency domain mapping pattern information, when a reference signal and/or data is mapped in a frequency domain resource of an OFDM symbol, On the basis of guaranteeing the current data transmission performance, it also guarantees the utilization rate of the time-frequency resources used for current data transmission. Therefore, the method of this embodiment can ensure the utilization of time-frequency resources for current data transmission.
  • the first form of the first frequency domain mapping pattern information includes the first reference signal mapping pattern information and the first data mapping pattern information, and the frequency in the first frequency domain corresponding to one OFDM symbol
  • the first frequency domain mapping pattern information may further include the first preselected frequency domain offset and the first frequency domain offset parameter set used to determine the RE used to map the reference signal.
  • the first frequency domain mapping pattern information may further include the second frequency domain offset of the RE used to map the data.
  • the meaning of the first frequency domain range in this embodiment is the same as the meaning of the first frequency domain range in the previous embodiment, and will not be repeated here.
  • the first reference signal mapping style information the first data mapping style information, the first preselected frequency domain offset, the first frequency domain offset parameter set, and the second frequency domain offset of the RE used for mapping data are detailed below. Description.
  • each consecutive N REs are a mapping group, and the pattern of mapping reference signals and/or data on each mapping group is the same .
  • the first reference signal mapping pattern information includes information indicating that there is no RE for mapping the reference signal in the frequency domain resource of one OFDM symbol; or, the first reference signal mapping The pattern information includes information indicating that N consecutive REs are a mapping group; or, the first reference signal mapping pattern information includes information indicating that REs for mapping reference signals exist in the frequency domain resources of one OFDM symbol; or, first The reference signal mapping style information includes information indicating that there are M REs used for mapping reference signals in consecutive N REs, where M ⁇ N, and M is an integer, that is, each mapping group includes M reference signals for mapping RE.
  • the first reference signal mapping pattern information is used to indicate that there is no RE for mapping the reference signal in the frequency domain resource of an OFDM symbol; or, the first reference signal mapping The pattern information is used to indicate that consecutive N REs belong to a mapping group; or, the first reference signal mapping pattern information is used to indicate that there are REs for mapping reference signals in the frequency domain resources of one OFDM symbol; or, the first reference signal The mapping pattern information is used to indicate that there are M REs used for mapping reference signals among consecutive N REs, where M ⁇ N, that is, each mapping group includes M REs used for mapping reference signals.
  • the first reference signal mapping pattern information includes the frequency domain resources indicating the frequency domain resources of an OFDM symbol There is no RE used to map the reference signal in the RE, for example, the information is "0"; or, the first reference signal mapping pattern information includes information indicating that there are M REs used to map the reference signal among the N REs. When M is 0.
  • the first reference signal mapping pattern information includes information indicating that N REs belong to a mapping group; or, the first reference signal The mapping pattern information includes information indicating that REs for mapping reference signals are present in the frequency domain resources of one OFDM symbol; or, the first reference signal mapping pattern information includes information indicating that there are M REs for mapping reference signals among N REs. Message, M is not 0 at this time.
  • N may be any one of the following: 1, 2, 3, 4, 6, 12.
  • M can be any one of the following: 0, 1, 2, 3, 4, 6.
  • M when N is 1, M is 1; when N is 2 , M is 1; when N is 3, M can be 1; when N is 4, M can be 1 or 2; when N is 6, M can be 1 or 2 or 3; when N is 12, M can be 1 or 2 or 3 or 4 or 6.
  • Fig. 4 is a schematic diagram of a mapping group provided by an embodiment of the application.
  • the first preselected frequency domain offset is the frequency domain offset between the starting RE and the reference RE.
  • the first preselected frequency domain offset may be the number of REs between the start RE and the reference RE plus one.
  • the first preselected frequency domain offset can be zero. It can be understood that when the first frequency domain mapping pattern information includes the first preselected frequency domain offset, M is a positive integer less than or equal to N, that is, REs for mapping reference signals exist in the mapping group.
  • the frequency of the subcarrier corresponding to each RE in the N REs included in a mapping group is not the same. If the first RE in the mapping group is the RE corresponding to the subcarrier with the smallest frequency among the N REs, the mapping group The last RE in the N REs is the RE corresponding to the subcarrier with the largest frequency; if the first RE in the mapping group is the RE corresponding to the subcarrier with the largest frequency in the N REs, then the last RE in the mapping group One RE is the RE corresponding to the subcarrier with the smallest frequency among the N REs.
  • RE411 in the mapping group 41 is the first RE in the mapping group 41
  • RE414 is the last RE in the mapping group 41. If the RE414 in the mapping group 41 can be the first RE in the mapping group 41, then the RE411 is the last RE in the mapping group 41.
  • RE411 is the first RE in the mapping group 41 and RE414 is the last RE in the mapping group 41
  • RE411 is the reference RE
  • RE411 and RE412 are used for mapping reference signals
  • RE411 and the reference RE—RE411 The RE with the least interval between REs, then RE411 is the starting RE, which is the same as the reference RE, and the first preselected frequency domain offset is 0 at this time.
  • the first preselected frequency domain offset is 0, in the case that RE411 is a reference RE, the starting RE is the same as the reference RE, and both are RE411, and RE411 is one of the REs used for mapping the reference signal.
  • RE411 is the first RE in the mapping group 41 and RE414 is the last RE in the mapping group 41
  • RE411 and RE412 are used for mapping reference signals
  • RE412 is the same as the reference RE—RE414
  • the sum of the first parameter included in the first frequency domain offset parameter set and the first preselected frequency domain offset is the first of the M REs used for mapping reference signals in the mapping group
  • the first frequency domain offset of the RE is any RE of the M REs
  • the first parameter is the parameter corresponding to the first RE in the first frequency domain offset parameter set
  • the first one in the mapping group The RE or the last RE is the reference RE
  • the first frequency domain offset of the first RE is the frequency domain offset between the first RE and the reference RE.
  • the first frequency domain offset of the first RE is 0, and if the first RE is different from the reference RE, the first frequency domain offset of the first RE is the first The number of REs between RE and reference RE is incremented by 1. It can be understood that the number of parameters included in the first frequency domain offset parameter set is the same as the number M of REs used to map the reference signal in the mapping group, and the M parameters and mapping groups included in the first frequency domain offset parameter set There is a one-to-one correspondence between the M REs used for mapping the reference signal.
  • the first frequency domain offset parameter set can be one of the following frequency domain parameter sets: (0), (0,1), (0,1,2), (0,1,2,3), (0,1 ,2,3,4,5).
  • the first frequency domain offset parameter set can be (0) or (0,1) or (0,1,2) or (0,1,2,3) or (0,1,2) ,3,4,5). It can be understood that the frequency domain parameter set is not limited to the five listed above, and this embodiment does not limit the specific form of the frequency domain offset parameter set.
  • the first preselected frequency domain offset is 0 and the first frequency domain offset parameter set is (0, 1), then there are 2 REs in the mapping group 41 for mapping reference signals.
  • the first frequency domain offset parameter set as (0,1), two first frequency domain offsets can be obtained: a first frequency domain offset is the parameter 0 and the first preselection in the first frequency domain offset parameter set The sum of frequency domain offset 0 is 0, and the other is the first frequency domain offset is the sum of parameter 1 in the first frequency domain offset parameter set and the first preselected frequency domain offset 0.
  • the RE411 with the first frequency domain offset of 0 and the RE412 with the first frequency domain offset of 1 are two REs used for mapping reference signals. Among them, RE411 corresponds to parameter 0 in the first frequency domain offset parameter set, and RE412 corresponds to parameter 1 in the first frequency domain offset parameter set.
  • the first reference signal mapping style information, the first preselected frequency domain offset, and the first frequency domain offset parameter set are described. It can be seen that in the frequency domain resources in the first frequency domain corresponding to one OFDM symbol
  • the number N of REs included in the mapping group (which can be obtained from the first reference signal mapping pattern information or the first data mapping pattern information described later), the first preselected frequency domain offset, and the first frequency domain offset
  • the set of configuration parameters jointly determine the RE used for mapping the reference signal in the mapping group. Therefore, the first terminal device and the second terminal device can determine the first frequency domain corresponding to an OFDM symbol according to the number N of REs included in the mapping group, the first preselected frequency domain offset, and the first frequency domain offset parameter set.
  • the RE used for mapping reference signals in the frequency domain resources within the range can be specifically determined by the following formula:
  • K R1 N*n+k'+ ⁇ R1 formula one.
  • K R1 is the index or number of the RE used for mapping the reference signal in the frequency domain resource in the first frequency domain corresponding to an OFDM symbol
  • k′ is the parameter in the first frequency domain offset parameter set
  • ⁇ R1 is The first preselected frequency domain offset
  • n is a natural number
  • n takes 0, 1, 2... in sequence. It is understandable that after the value of n is determined, each parameter k′ in the first frequency domain offset parameter set needs to be included in the calculation in Equation 1, and then the value of n is updated.
  • the second terminal device may map the reference signal in the frequency domain resource within the first frequency domain corresponding to one OFDM symbol according to the first frequency domain mapping pattern.
  • the first reference signal mapping pattern information or the first data mapping pattern included in the information determines the number N of REs included in the mapping group, based on the number N of REs included in the mapping group, the first frequency domain offset parameter set, and the first preselection
  • the first data mapping style information includes the first density of REs used for mapping data in the mapping group, and the first density is the ratio of the number of REs used for mapping data in the mapping group H to N, H is an integer, H ⁇ N; or, the first data mapping style information includes first indication information, and the first indication information indicates that one OFDM symbol corresponds to frequency domain resources in the first frequency domain, except for mapping reference signals REs other than REs are REs used to map data; or, the first data mapping style information includes second indication information, and the second indication information indicates that one of the frequency domain resources in the first frequency domain corresponding to one OFDM symbol is not There is an RE for mapping data. Wherein, the first data mapping style information includes the first indication information relative to the first data mapping style including the first density, which can reduce signaling overhead.
  • the first density can be any one of the following: 0, 1/2, 2/3, 1/3, 3/4, 2/4, 1/4, 5/6, 4/6, 3/6 , 2/6, 1/6, 1/12, 2/12, 3/12, 4/12, 5/12, 6/12, 7/12, 8/12, 9/12, 10/12, 11 /12.
  • the denominator of the first density may be the same as the number N of REs included in a mapping group, that is, if the first density is not 0, the denominator of the first density may be used to indicate the REs included in a mapping group.
  • the numerator of the first density indicates the number H of REs used for mapping data on the mapping group.
  • the first reference signal mapping style information may be any of the above.
  • the first reference signal mapping style information may be that the first reference signal mapping style information may include indicating N There is information about M REs for mapping reference signals in the RE, and M is equal to 0 at this time, or the first reference signal mapping pattern information may include indicating that there is no RE for mapping reference signals in the frequency domain resources of one OFDM symbol .
  • the first density is 0 or the first data mapping style information includes the first indication information or the first data mapping style information includes the second indication information
  • the first reference signal mapping pattern information may include information indicating that N REs are a mapping group, or the first reference signal mapping pattern information may include indicating that N REs are There is information of M REs used for mapping the reference signal, and M is not 0 at this time.
  • the first data mapping style information includes the first indication information
  • the first reference The signal mapping pattern information may include information indicating that there are M REs used for mapping the reference signal among the N REs, and M is equal to 0 at this time.
  • the first RE or the last RE in the mapping group is the reference RE, for any of the H REs used for mapping data in the mapping group
  • the second RE the second frequency domain offset of the second RE is the frequency domain offset between the second RE and the reference RE.
  • the second RE is any RE among the H REs used for mapping data in the mapping group.
  • the meaning of the reference RE here is the same as that of the aforementioned reference RE.
  • the meaning of the first RE in a mapping group here is the same as the meaning of the first RE in the aforementioned mapping group.
  • the meaning of the last RE in the mapping group is the same as the meaning of the last RE in the aforementioned mapping group.
  • the number of second frequency domain offsets is the same as the number H of REs used for mapping data in the mapping group.
  • the second frequency domain offset ranges from 0 to N-1, including 0 and N-1. That is, the first frequency domain mapping pattern information may include the second frequency domain offset of each of the H REs used for mapping data in the mapping group.
  • RE411 in the mapping group 41 is a reference RE
  • the first density is 2/4
  • RE413 and RE414 are the mapping groups The RE used for mapping data in 41.
  • the first data mapping style information and the second frequency domain offset are described. It can be seen that there is an RE for mapping data in the frequency domain resources in the first frequency domain corresponding to an OFDM symbol (at this time, the first A data mapping style information includes first indication information or includes the first density of REs used to map data in the mapping group and the first density is not 0), the number of REs included in the mapping group N (may be mapped according to the first reference signal The pattern information or the first data mapping pattern information) and the second frequency domain offset together determine the RE used for mapping data in a mapping group. Wherein, when the first data mapping style information includes the first indication information, the first data mapping style information and the RE used to map the reference signal may also determine the RE to which the reference signal is mapped in a mapping group.
  • the first terminal device and the second terminal device can determine, according to the number N of REs included in the mapping group and the second frequency domain offset, the frequency domain resources in the first frequency domain corresponding to one OFDM symbol for mapping data
  • the RE can be determined by the following formula 2:
  • K D is the index or number of the RE mapping data in the frequency domain resource in the first frequency domain corresponding to an OFDM symbol
  • ⁇ D is the second frequency domain offset
  • n is a natural number
  • n takes 0 and 1 in turn ,2.
  • the second terminal device may map data in the frequency domain resources in the first frequency domain corresponding to an OFDM symbol according to the information included in the first frequency domain mapping pattern information.
  • the first reference signal mapping pattern information or the first data mapping pattern determines the number N of REs included in the mapping group, and the first frequency corresponding to an OFDM symbol is determined according to the number N of REs included in the mapping group and the second frequency domain offset.
  • the number N of REs included in the mapping group may be determined according to the first reference signal mapping pattern information or the first data mapping pattern included in the first frequency domain mapping pattern information , According to the number N of REs included in the mapping group, the first frequency domain offset parameter set, and the first preselected frequency domain offset, it is determined that a reference signal is mapped in a frequency domain resource in the first frequency domain corresponding to an OFDM symbol RE, according to the first data mapping pattern information and the RE used for mapping the reference signal, determine the RE mapped with data in the frequency domain resource in the first frequency domain corresponding to an OFDM symbol (applicable to the first data mapping pattern information including the first One indication information).
  • the RE to which data is mapped in the frequency domain resource in the first frequency domain corresponding to one OFDM symbol may be determined according to the first reference signal mapping pattern information and the first data mapping pattern information included in the first frequency domain mapping pattern information (Applicable to the first data mapping style information including the first indication information or the first density included is 1, the first reference signal mapping style information includes indicating that one OFDM symbol corresponds to the frequency domain resource in the first frequency domain range Information of REs used for mapping reference signals or information indicating that there are 0 REs in consecutive N REs).
  • the first form of the first frequency domain mapping pattern information of an OFDM symbol is introduced above. It can be understood that the first frequency domain mapping pattern information may also be referred to as the first frequency domain mapping pattern information. As described in the embodiment shown in FIG. 3, one OFDM symbol corresponds to multiple frequency domain mapping patterns, and the first frequency domain mapping pattern is one of the multiple frequency domain mapping patterns. In one manner, the information of part of the frequency domain mapping patterns among the multiple frequency domain mapping patterns may be as shown in Table 1:
  • the frequency domain mapping pattern corresponding to an OFDM symbol is not limited to the 34 frequency domain mapping patterns in Table 1, and there are also multiple frequency domain mapping patterns that are not listed.
  • the network device, the first terminal device, and the second terminal device can store a variety of frequency domain mapping patterns.
  • the storage method can be as shown in Table 1.
  • each information included in a frequency domain mapping pattern corresponds to an index.
  • the network device or the first terminal device can send the index or number of the first frequency domain mapping pattern when sending the first frequency domain mapping pattern information to the second terminal device.
  • the network device, the first terminal device, and the second terminal device may not store multiple frequency domain mapping patterns.
  • the various information included in the frequency domain mapping pattern information in this form may be combined in any manner. It is stored in the corresponding list, or each item of information included in the frequency domain mapping style information in this form is independently stored in its own list.
  • FIG. 5 is a schematic diagram 1 of a frequency domain mapping pattern provided by an embodiment of this application
  • FIG. 6 is a schematic diagram 2 of a frequency domain mapping pattern provided by an embodiment of this application
  • FIG. 7 is a schematic diagram 3 of a frequency domain mapping pattern provided by an embodiment of this application
  • FIG. 8 is a fourth schematic diagram of a frequency domain mapping pattern provided by an embodiment of this application.
  • FIG. 5 is a schematic diagram of the frequency domain mapping pattern numbered 9 in Table 1.
  • a mapping group includes 2 REs, and a mapping group includes 1 RE for mapping reference signals. The remaining 1 RE is neither used for mapping reference signals nor for mapping data.
  • the first reference signal mapping pattern information may include information indicating that two consecutive REs are a mapping group, and A data mapping pattern information may be the first density 0 or the second indication information, the first preselected frequency domain offset in the first frequency domain mapping pattern is 0, and the first frequency domain offset parameter set is (0).
  • the second frequency domain offset is not included in the first frequency domain mapping pattern. It can be understood that the reference RE at this time is the RE corresponding to the smallest frequency subcarrier in a mapping group.
  • a mapping group includes 2 REs, and a mapping group includes 1 RE for mapping reference signals, and the remaining mapping groups are 1 RE is used to map data.
  • the first reference signal mapping pattern information may include information indicating that two consecutive REs are a mapping group, or, The first reference signal mapping pattern information may include information indicating that REs for mapping reference signals are present in the frequency domain resources of one OFDM symbol.
  • the first data mapping pattern information may be the first density 1/2 or the first indication information.
  • the first preselected frequency domain offset in the frequency domain mapping pattern information is 1, the first frequency domain offset parameter set is (0), and the second frequency domain offset in the first frequency domain mapping pattern is 0. It can be understood that the reference RE at this time is the RE corresponding to the smallest frequency subcarrier in a mapping group.
  • Figure 7 is a schematic diagram of the frequency domain mapping pattern numbered 15 in Table 1.
  • a mapping group includes 4 REs, and a mapping group includes 2 REs for mapping reference signals. Including 1 RE for mapping data, therefore, there is 1 second frequency domain offset.
  • the first reference signal mapping pattern information may include indicating that 2 of the consecutive 4 REs are used for mapping reference signals
  • the first data mapping pattern information may include information indicating that two consecutive REs are a mapping group, or including information indicating that there are REs for mapping reference signals in the frequency domain resources of an OFDM symbol.
  • the first density is 1/4, and the first preselected frequency domain offset in the first frequency domain mapping pattern information is 0, the first frequency domain offset parameter set is (0,1), and the first frequency domain mapping pattern is The second frequency domain offset is 2. It can be understood that the reference RE at this time is the RE corresponding to the smallest frequency subcarrier in a mapping group.
  • Figure 8 is a schematic diagram of the frequency domain mapping pattern numbered 14 in Table 1.
  • a mapping group includes 4 REs, and a mapping group includes 2 REs for mapping reference signals.
  • REs are continuous REs, and the remaining 2 REs in the mapping group are used to map data. Therefore, there are 2 second frequency domain offsets.
  • the first frequency domain mapping pattern information is information of the frequency domain mapping pattern numbered 14
  • the first reference signal mapping pattern information may include indicating that there are 2 of the 4 consecutive REs used for mapping reference signals.
  • the information includes information indicating that two consecutive REs are a mapping group, or includes information indicating that there are REs for mapping reference signals in the frequency domain resources of one OFDM symbol
  • the first data mapping pattern information is the first Density 2/4 or the first indication information
  • the first preselected frequency domain offset in the first frequency domain mapping pattern is 1
  • the first frequency domain offset parameter set is (0,1)
  • the second frequency domain offset is 2 Set to 0,3. It can be understood that the reference RE at this time is the RE corresponding to the smallest frequency subcarrier in a mapping group.
  • the second form of the first frequency domain mapping pattern information includes the first reference signal mapping pattern information and the first data mapping pattern information, and the frequency in the first frequency domain corresponding to one OFDM symbol
  • the first frequency domain mapping style information may further include a first frequency domain offset parameter set.
  • the first frequency domain mapping pattern information may further include a second frequency domain offset of the RE used for mapping data in the mapping group.
  • the first frequency domain mapping pattern information does not include the first preselected frequency domain offset. Therefore, when the reference signal needs to be mapped in the frequency domain resources in the first frequency domain corresponding to one OFDM symbol, the first terminal device may also obtain the first preselected frequency domain offset.
  • the method for the first terminal device to obtain the first reference signal mapping pattern information will be described in detail.
  • acquiring the first reference signal mapping pattern information by the first terminal device includes: the first terminal device determines the first reference signal mapping pattern information from at least two types of reference signal mapping pattern information according to current data transmission characteristics.
  • the meaning of the current data transmission feature in this embodiment is the same as in the embodiment shown in FIG. 3.
  • the second terminal device may receive the first reference signal mapping pattern information from the first terminal device.
  • acquiring the first reference signal mapping pattern information by the first terminal device includes: the first terminal device determines the second reference signal mapping pattern information from at least two types of reference signal mapping pattern information according to the first data mapping pattern information and the current data transmission characteristic.
  • a reference signal mapping style information corresponds to one or more reference signal mapping style information, and the first terminal device determines the first reference from the one or more reference signal mapping style information corresponding to the first data mapping style information according to the current data transmission characteristics.
  • Signal mapping style information may receive the first reference signal mapping pattern information from the first terminal device.
  • acquiring the first reference signal mapping pattern information by the first terminal device includes: receiving the first reference signal mapping pattern information from the network device.
  • the method for the network device to obtain the first reference signal mapping pattern information is the same as the method for the first terminal device to obtain the first reference signal mapping pattern information in the first embodiment or the second embodiment.
  • the second terminal device may receive the first reference signal mapping pattern information from the first terminal device or the network device.
  • the first terminal device may obtain the first preselected frequency domain offset through the following implementation manner.
  • the first terminal device acquiring the first preselected frequency domain offset includes : The first terminal acquires 0 as the first preselected frequency domain offset. At this time, the second terminal device may receive the first preselected frequency domain offset from the first terminal device.
  • acquiring the first preselected frequency domain offset by the first terminal device includes: the first terminal Obtain 0 as the first preselected frequency domain offset.
  • the second terminal device may receive the first preselected frequency domain offset from the first terminal device.
  • acquiring the first preselected frequency domain offset by the first terminal device includes: the first terminal determines the first preselected frequency domain offset according to N, the first frequency domain offset parameter set, and the first preset rule ,
  • the first preset rule is that the sum of the first preselected frequency domain offset and the largest parameter in the first frequency domain offset parameter set is less than or equal to N-1.
  • the value of N may be obtained according to the first reference signal mapping pattern information, or may be determined by the denominator of the first density included in the first data mapping pattern.
  • the second terminal device may receive the first preselected frequency domain offset from the first terminal device.
  • acquiring the first preselected frequency domain offset by the first terminal device includes: receiving the first preselected frequency domain offset from the network device.
  • the method for the network device to obtain the first preselected frequency domain offset is the same as the method for the first terminal device to obtain the first preselected frequency domain offset in the first embodiment or the second embodiment or the third embodiment.
  • the second terminal device may receive the first preselected frequency domain offset from the first terminal device or the network device.
  • the first terminal device may not obtain the first preselected frequency domain offset.
  • the parameter 0 included in the first frequency domain offset parameter set is The first preselected frequency domain offset is also the first frequency domain offset of the RE used for mapping the reference signal.
  • the first terminal device uses the first frequency domain mapping pattern information to locate at least one OFDM symbol in the first time-frequency resource Mapping the reference signal and/or data in the frequency domain resource may include: the first terminal device, according to the first frequency domain mapping pattern information and the first preselected frequency domain offset, in the first time-frequency resource at least one OFDM symbol Reference signals and/or data are mapped in frequency domain resources.
  • the second terminal device obtains the reference signal and/or data on the first time-frequency resource according to the first frequency domain mapping pattern information , May include: the second terminal device acquires the reference signal and/or data on the first time-frequency resource according to the first frequency domain mapping pattern information and the first preselected frequency domain offset.
  • multiple frequency domain mapping pattern information can be stored in the network device, the first terminal device, and the second terminal device, and each frequency domain mapping pattern
  • the information corresponds to an index or number, that is, the information included in the frequency domain mapping pattern information in this form corresponds to an index or number; at this time, the network device or the first terminal device sends the first frequency domain to the second terminal device When mapping the pattern information, the index or number of the first frequency domain mapping pattern may be sent.
  • the network device, the first terminal device, and the second terminal device may not store multiple frequency domain mapping patterns.
  • the various information included in the frequency domain mapping pattern information in this form may be combined in any manner. It is stored in the corresponding list, or each item of information included in the frequency domain mapping style information in this form is independently stored in its own list.
  • the third form of the first frequency domain mapping pattern information includes the first reference signal mapping pattern information and the first data mapping pattern information, and the frequency in the first frequency domain corresponding to one OFDM symbol
  • the first frequency domain mapping pattern information may also include a first preselected frequency domain offset.
  • a frequency domain mapping pattern information may further include the second frequency domain offset of the RE used for mapping data in the mapping group.
  • the first frequency domain mapping pattern information when a reference signal needs to be mapped in a frequency domain resource in the first frequency domain corresponding to an OFDM symbol, the first frequency domain mapping pattern information does not include the first frequency domain offset parameter set.
  • the first terminal device may also obtain the first frequency domain offset parameter set.
  • the first terminal device can obtain the first frequency domain offset parameter set through the following but not limited to the following three implementation manners.
  • the first terminal device acquiring the first frequency domain offset parameter set includes: The terminal device acquires a frequency domain parameter set (0) in a plurality of frequency domain parameter sets as the first frequency domain offset parameter set. At this time, the second terminal device may receive the first frequency domain offset parameter set from the first terminal device.
  • the first terminal device acquiring the first frequency domain offset parameter set includes: the first terminal device obtains the first frequency domain offset parameter set from multiple frequencies according to N, the first preselected frequency domain offset, the second preset rule, and the current data transmission characteristics.
  • the first frequency domain offset parameter set is determined in the domain parameter set
  • the second preset rule is that the number of parameters included in the first frequency domain offset parameter set is less than N
  • the first preselected frequency domain offset and the first frequency domain offset The sum of the largest parameters in the parameter set is less than or equal to N-1.
  • the number of parameters included in the first frequency domain offset parameter set is the same as the number M of REs used to map the reference signal in the mapping group.
  • the first terminal device is based on the current data transmission characteristics. , Determine N and M, and then determine a first frequency domain whose number of parameters is equal to M and meets the first preselected frequency domain offset and the largest parameter in the first frequency domain offset parameter set is less than or equal to N-1 Bias parameter set.
  • the second terminal device may receive the first frequency domain offset parameter set from the first terminal device.
  • the first terminal device acquiring the first frequency domain offset parameter set includes: the current data transmission characteristics of the first terminal device determine the first frequency domain offset parameter set from multiple frequency domain parameter sets. As described above, the number of parameters included in the first frequency domain offset parameter set is the same as the number M of REs used to map the reference signal in the mapping group. Therefore, in one manner, the first terminal device is based on the current data transmission characteristics. , Determine N and M, and then determine a first frequency domain offset parameter set with the number of parameters equal to M. At this time, the second terminal device may receive the first frequency domain offset parameter set from the first terminal device.
  • the first terminal device acquiring the first frequency domain offset parameter set includes: receiving the first frequency domain offset parameter set from the network device.
  • the method for the network device to obtain the first frequency domain offset parameter set is the same as the method for the first terminal device to obtain the first frequency domain offset parameter set in the first embodiment or the second embodiment or the third embodiment.
  • the second terminal device may receive the first frequency domain offset parameter set from the first terminal device or the network device.
  • the first terminal device may not obtain the first frequency domain offset parameter set.
  • the first preselected frequency domain offset is the first RE used to map the reference signal in the mapping group. A frequency domain offset.
  • the first terminal device uses the first frequency domain mapping pattern information to locate at least one OFDM symbol in the first time-frequency resource Mapping the reference signal and/or data in the frequency domain resource may include: the first terminal device at least one OFDM symbol in the first time-frequency resource according to the first frequency domain mapping pattern information and the first frequency domain offset parameter set Reference signals and/or data are mapped into the frequency domain resources.
  • the second terminal device uses the first frequency domain mapping pattern information to reference the signal and/or data on the first time-frequency resource, It may include: the second terminal device acquires the reference signal and/or data on the first time-frequency resource according to the first frequency domain mapping pattern information and the first frequency domain offset parameter set.
  • multiple frequency domain mapping pattern information can be stored in the network device, the first terminal device, and the second terminal device, and each frequency domain mapping pattern
  • the information corresponds to an index or number, that is, the information included in the frequency domain mapping pattern information in this form corresponds to an index or number; at this time, the network device or the first terminal device sends the first frequency domain to the second terminal device When mapping the pattern information, the index or number of the first frequency domain mapping pattern may be sent.
  • the network device, the first terminal device, and the second terminal device may not store multiple frequency domain mapping patterns.
  • the various information included in the frequency domain mapping pattern information in this form may be combined in any manner. It is stored in the corresponding list, or each item of information included in the frequency domain mapping style information in this form is independently stored in its own list.
  • the fourth form of the first frequency domain mapping pattern information includes the first reference signal mapping pattern information and the first data mapping pattern information, the frequency in the first frequency domain corresponding to one OFDM symbol
  • the first frequency domain mapping pattern information may further include the first frequency domain offset parameter set and the first preselected frequency domain offset.
  • the first frequency domain mapping pattern information when data needs to be mapped in frequency domain resources within the first frequency domain corresponding to an OFDM symbol, does not include the second frequency domain offset of the RE used to map the data in the mapping group.
  • the first terminal device may also obtain the second frequency domain offset of the RE used for mapping data in the mapping group.
  • the method for the first terminal device to obtain the first data mapping pattern information can be implemented by the following but not limited to the following two implementation manners.
  • the first terminal device determines the first data mapping style information from at least two types of data mapping style information according to the current data transmission characteristics.
  • the second terminal device may receive the first data mapping style information from the first terminal device.
  • the first terminal device determines the first data mapping pattern information from at least two types of reference signal mapping pattern information according to the first reference signal mapping pattern information and the current data transmission characteristic.
  • the second terminal device may receive the first data mapping style information from the first terminal device.
  • the first reference signal mapping style information corresponds to one or more data mapping style information
  • the first terminal device determines the first data from the one or more data mapping style information corresponding to the first reference signal mapping style information according to the current data transmission characteristics Mapping style information.
  • the first terminal device receives the first data mapping style information from the network device.
  • the method for the network device to obtain the first data mapping style information is the same as the method for the first terminal device to obtain the first data mapping style information in the first embodiment or the second embodiment.
  • the second terminal device may receive the first data mapping style information from the first terminal device or the network device.
  • the first terminal device obtains the second frequency domain offset of the RE used for mapping data in the mapping group, which can be implemented by the following but not limited to the following six implementation manners.
  • the first data mapping style information includes first indication information or first data mapping
  • the first terminal device acquiring the second frequency domain offset includes: the first terminal device acquiring 0 is the second frequency domain offset.
  • the second terminal device may receive the second frequency domain offset from the first terminal device.
  • the first terminal device acquiring the second frequency domain offset includes: the first terminal device determines the second frequency domain offset according to N, the first density, and a third preset rule The third preset rule is that the second frequency domain offset is between 0 and N-1. Wherein, the product of the first density and N is the number H of the second frequency domain offset that the first terminal device needs to determine. At this time, the second terminal device may receive the second frequency domain offset from the first terminal device.
  • the first data mapping pattern information includes the first density
  • the denominator of the first density can be
  • the first terminal device acquiring the second frequency domain offset includes: the first terminal device determines the second frequency offset according to the first density and a third preset rule Frequency domain offset, the third preset rule is that the second frequency domain offset is between 0 and N-1.
  • the numerator of the first density is the number H of the second frequency domain offset that the first terminal device needs to determine.
  • the second terminal device may receive the second frequency domain offset from the first terminal device.
  • the first terminal device acquiring the second frequency domain offset includes: the first terminal device according to N, the first frequency domain offset parameter set, and the first preselected frequency domain offset Setting, the first density, and the fourth preset rule determine the second frequency domain offset.
  • the fourth preset rule is that the second frequency domain offset is between 0 and N-1 and the first frequency domain offset and the second frequency domain offset of the RE used for mapping the reference signal in the mapping group are different.
  • the first terminal device determines the second frequency domain offset according to N, the first frequency domain offset parameter set, the first preselected frequency domain offset, the first density, and the fourth preset rule, including: the first terminal The device can determine the first frequency domain offset of the RE used for mapping the reference signal in the mapping group according to the first frequency domain offset parameter set and the first preselected frequency domain offset; And the fourth preset rule determine the second frequency domain offset.
  • the second terminal device may receive the second frequency domain offset from the first terminal device.
  • the first data mapping pattern information includes a first density
  • the denominator of the first density can represent
  • the first terminal device acquiring the second frequency domain offset includes: the first terminal device according to the first frequency domain offset parameter set, the first preselected frequency domain offset, the first density and
  • the fourth preset rule determines the second frequency domain offset.
  • the fourth preset rule is that the second frequency domain offset is between 0 and N-1 and the first frequency domain offset and the second frequency domain offset of the RE used for mapping the reference signal in the mapping group are different.
  • the first terminal device determines the second frequency domain offset according to the first frequency domain offset parameter set, the first preselected frequency domain offset, the first density, and the fourth preset rule, including: the first terminal device according to The first frequency domain offset parameter set and the first preselected frequency domain offset can determine the first frequency domain offset of the RE used to map the reference signal in the mapping group; the first terminal device according to the first terminal device according to the first density, The first frequency domain offset and the fourth preset rule determine the second frequency domain offset.
  • the second terminal device may receive the second frequency domain offset from the first terminal device.
  • the first terminal device acquiring the second frequency domain offset includes: receiving the second frequency domain offset from the network device.
  • the method for the network device to obtain the second frequency domain offset is the same as that in the first embodiment or the second embodiment or the third embodiment or the fourth embodiment or the fifth embodiment. Frequency domain offset method.
  • the second terminal device may receive the second frequency domain offset from the first terminal device or the network device.
  • the first data mapping pattern information includes the first indication information or the first data mapping pattern
  • the first terminal device determines the value of at least one OFDM symbol in the first time-frequency resource according to the first frequency domain mapping pattern information.
  • Mapping the reference signal and/or data in the frequency domain resource may include: the first terminal device in the frequency domain of at least one OFDM symbol in the first time-frequency resource according to the first frequency domain mapping pattern information and the second frequency domain offset Reference signals and/or data are mapped in the resource.
  • the second terminal device When data is mapped in frequency domain resources in the first frequency domain corresponding to one OFDM symbol, the second terminal device acquires reference signals and/or data on the first time-frequency resource according to the first frequency domain mapping pattern information, It may include: the second terminal device acquires the reference signal and/or data on the first time-frequency resource according to the first frequency domain mapping pattern information and the second frequency domain offset.
  • the fourth form of the first frequency domain mapping pattern information a variety of frequency domain mapping pattern information can be stored in the network device, the first terminal device, and the second terminal device, and each frequency domain mapping pattern
  • the information corresponds to an index or number, that is, the information included in the frequency domain mapping pattern information in this form corresponds to an index or number; at this time, the network device or the first terminal device sends the first frequency domain to the second terminal device When mapping the pattern information, the index or number of the first frequency domain mapping pattern may be sent.
  • the network device, the first terminal device, and the second terminal device may not store multiple frequency domain mapping patterns.
  • the various information included in the frequency domain mapping pattern information in this form may be combined in any manner. It is stored in the corresponding list, or each item of information included in the frequency domain mapping style information in this form is independently stored in its own list.
  • the fifth form of the first frequency domain mapping pattern information includes the first reference signal mapping pattern information and the first data mapping pattern information, and the frequency in the first frequency domain corresponding to one OFDM symbol
  • the first frequency domain mapping style information may further include the second frequency domain offset of the RE used to map the data in the mapping group.
  • the first frequency domain mapping pattern information does not include the first frequency domain offset parameter set and the first preselected frequency. Domain bias. Therefore, when the reference signal needs to be mapped in the frequency domain resources in the first frequency domain corresponding to one OFDM symbol, the first terminal device may also obtain the first frequency domain offset parameter set and the first preselected frequency domain offset.
  • the first terminal device may also obtain the first frequency domain offset parameter set and the first preselected frequency domain offset.
  • the first terminal device may also not obtain the first frequency domain offset parameter set, nor the first preselected frequency domain offset.
  • the first terminal device uses the first frequency domain mapping pattern information to locate at least one OFDM symbol in the first time-frequency resource Mapping the reference signal and/or data in the frequency domain resource may include: the first terminal device according to the first frequency domain mapping pattern information, the first frequency domain offset parameter set, and the first preselected frequency domain offset, in the first time
  • the reference signal and/or data are mapped to the frequency domain resource of at least one OFDM symbol in the frequency resource.
  • the second terminal device obtains the reference signal and/or data on the first time-frequency resource according to the first frequency domain mapping pattern information , May include: the second terminal device acquires the reference signal and/or data on the first time-frequency resource according to the first frequency domain mapping pattern information, the first frequency domain offset parameter set, and the first preselected frequency domain offset.
  • multiple frequency domain mapping pattern information can be stored in the network device, the first terminal device, and the second terminal device, and each frequency domain mapping pattern The information corresponds to an index or number, that is, the information included in the frequency domain mapping pattern information in this form corresponds to an index or number; at this time, the network device or the first terminal device sends the first frequency domain to the second terminal device When mapping the pattern information, the index or number of the first frequency domain mapping pattern may be sent.
  • the network device, the first terminal device, and the second terminal device may not store multiple frequency domain mapping patterns.
  • the various information included in the frequency domain mapping pattern information in this form may be combined in any manner. It is stored in the corresponding list, or each item of information included in the frequency domain mapping style information in this form is independently stored in its own list.
  • the sixth form of the first frequency domain mapping pattern information includes the first reference signal mapping pattern information and the first data mapping pattern information, and the frequency in the first frequency domain corresponding to one OFDM symbol
  • the first frequency domain mapping pattern information may further include the first preselected frequency domain offset.
  • the first frequency domain mapping pattern information when a reference signal needs to be mapped in a frequency domain resource within the first frequency domain corresponding to an OFDM symbol, the first frequency domain mapping pattern information does not include the first frequency domain offset parameter set.
  • the first frequency domain mapping pattern information when data needs to be mapped in the frequency domain resources within the corresponding first frequency domain, the first frequency domain mapping pattern information does not include the second frequency domain offset of the RE used for mapping data in the mapping group. Therefore, when the reference signal needs to be mapped in the frequency domain resources in the first frequency domain corresponding to one OFDM symbol, the first terminal device may also obtain the first frequency domain offset parameter set. When data needs to be mapped in the frequency domain resources in the first frequency domain corresponding to one OFDM symbol, the first terminal device may also obtain the second frequency domain offset of the RE used to map the data in the mapping group.
  • the method for the first terminal device to obtain the first frequency domain offset parameter set and the second frequency domain offset can be referred to the above description, which will not be repeated here.
  • the first frequency domain offset parameter set may not be obtained and the second frequency domain offset of the RE used for mapping data in the mapping group may not be obtained, refer to the description in the foregoing manner, and details are not repeated here.
  • the first terminal device uses the first frequency domain mapping pattern information in the first time-frequency domain.
  • Mapping the reference signal and/or data to the frequency domain resource of at least one OFDM symbol in the resource may include: the first terminal device according to the first frequency domain mapping pattern information, the first frequency domain offset parameter set, and the second frequency domain offset And the reference signal and/or data are mapped in the frequency domain resource of at least one OFDM symbol in the first time-frequency resource.
  • the second terminal device acquires the reference signal and/or data on the first time-frequency resource according to the first frequency domain mapping pattern information
  • the data may include: the second terminal device acquires the reference signal and/or data on the first time-frequency resource according to the first frequency domain mapping pattern information, the first frequency domain offset parameter set, and the second frequency domain offset.
  • multiple frequency domain mapping pattern information can be stored in the network device, the first terminal device, and the second terminal device, and each frequency domain mapping pattern The information corresponds to an index or number, that is, the information included in the frequency domain mapping pattern information in this form corresponds to an index or number; at this time, the network device or the first terminal device sends the first frequency domain to the second terminal device When mapping the pattern information, the index or number of the first frequency domain mapping pattern may be sent.
  • the network device, the first terminal device, and the second terminal device may not store multiple frequency domain mapping patterns.
  • the various information included in the frequency domain mapping pattern information in this form may be combined in any manner. It is stored in the corresponding list, or each item of information included in the frequency domain mapping style information in this form is independently stored in its own list.
  • the seventh form of the first frequency domain mapping pattern information includes the first reference signal mapping pattern information and the first data mapping pattern information, and the frequency in the first frequency domain corresponding to one OFDM symbol
  • the first frequency domain mapping pattern information may further include the first frequency domain offset parameter set.
  • the first frequency domain mapping pattern information when a reference signal needs to be mapped in a frequency domain resource in the first frequency domain corresponding to an OFDM symbol, the first frequency domain mapping pattern information does not include the first preselected frequency domain offset, and the first frequency domain offset is not included in the corresponding OFDM symbol When data needs to be mapped in the frequency domain resources within the first frequency domain range, the first frequency domain mapping pattern information does not include the second frequency domain offset of the RE used to map the data in the mapping group.
  • the first terminal device may also obtain the first preselected frequency domain offset; in the first frequency domain corresponding to an OFDM symbol
  • the first terminal device may also obtain the second frequency domain offset of the RE used to map the data.
  • the method for the first terminal device to obtain the first preselected frequency domain offset and the second frequency domain offset of the RE used for mapping data in the mapping group can be referred to the above description, and will not be repeated here.
  • the first preselected frequency domain offset may not be obtained and the second frequency domain offset of the RE used for mapping data in the mapping group may not be obtained, refer to the description in the foregoing manner, and details are not repeated here.
  • the first terminal device sets at least one of the first time-frequency resources according to the first frequency domain mapping pattern information.
  • Mapping the reference signal and/or data in the frequency domain resources of the OFDM symbol may include: the first terminal device according to the first frequency domain mapping pattern information, the first preselected frequency domain offset, and the second frequency domain offset, in the first time
  • the reference signal and/or data are mapped to the frequency domain resource of at least one OFDM symbol in the frequency resource.
  • the second terminal device acquires the reference signal and/or data on the first time-frequency resource according to the first frequency domain mapping pattern information
  • the data may include: the second terminal device acquires the reference signal and/or data on the first time-frequency resource according to the first frequency domain mapping pattern information, the first preselected frequency domain offset, and the second frequency domain offset.
  • multiple frequency domain mapping pattern information can be stored in the network device, the first terminal device, and the second terminal device, and each frequency domain mapping pattern The information corresponds to an index or number, that is, the information included in the frequency domain mapping pattern information in this form corresponds to an index or number; at this time, the network device or the first terminal device sends the first frequency domain to the second terminal device When mapping the pattern information, the index or number of the first frequency domain mapping pattern may be sent.
  • the network device, the first terminal device, and the second terminal device may not store multiple frequency domain mapping patterns.
  • the various information included in the frequency domain mapping pattern information in this form may be combined in any manner. It is stored in the corresponding list, or each item of information included in the frequency domain mapping style information in this form is independently stored in its own list.
  • the first frequency domain mapping pattern information includes the first reference signal mapping pattern information and the first data mapping pattern information, and the frequency in the first frequency domain corresponding to one OFDM symbol
  • the first frequency domain mapping pattern information may also include the first frequency domain offset of the RE used to map the reference signal in the mapping group, which is within the first frequency domain range corresponding to one OFDM symbol
  • the first frequency domain mapping style information may further include a second frequency domain offset of the RE used to map the data in the mapping group.
  • the first reference signal mapping style information the first data mapping style information, and the second frequency domain offset, refer to the description in the previous embodiment.
  • the M REs used for mapping reference signals in a mapping group each correspond to a first frequency domain offset, that is to say, the first frequency domain mapping pattern information includes the mapping group for mapping reference signals
  • the first frequency domain offset of each of the M REs that is, the number of first frequency domain offsets is the same as the number M of REs used for mapping reference signals in a mapping group.
  • the first frequency domain offset of the first RE is the difference between the first RE and the reference RE Frequency domain offset between.
  • the first frequency domain offset of the first RE is 0, and if the reference RE of the first RE is different, the first frequency offset of the first RE is Set to the number of REs between the first RE and the reference RE plus one. It can be understood that the value range of the first frequency domain offset is between 0 and N-1, including 0 and N-1, and the first frequency domain offset and the second frequency domain offset are different.
  • the meaning of the reference RE here is the same as that of the aforementioned reference RE.
  • the meaning of the first RE in a mapping group here is the same as the meaning of the first RE in the aforementioned mapping group.
  • the meaning of the last RE in the mapping group is the same as the meaning of the last RE in the aforementioned mapping group.
  • the number of the first frequency domain offset is two: 0 and 1, then there are 2 REs in the mapping group 41 for mapping the reference signal, if the reference RE is RE411, then the RE411 The first frequency domain offset is 0, and the first frequency domain offset of RE412 is 1, that is, RE411 and RE412 are two REs used for mapping reference signals.
  • the first reference signal mapping style information and the first frequency domain offset are described. It can be seen that when the reference signal needs to be mapped in the frequency domain resources in the first frequency domain corresponding to an OFDM symbol, the REs included in the mapping group
  • the number N and the first frequency domain offset jointly determine the REs used for mapping the reference signal in the mapping group, and the number N of REs included in the mapping group can be obtained through the first reference signal mapping pattern information or the first data mapping pattern information. Therefore, the first terminal device and the second terminal device can determine, according to the number N of REs included in the mapping group and the first frequency domain offset, the frequency domain resources in the first frequency domain corresponding to one OFDM symbol for mapping reference signals
  • the specific RE can be determined by the following formula 3:
  • K R2 is the index or number of the RE mapping the reference signal in the frequency domain resource in the first frequency domain corresponding to an OFDM symbol
  • ⁇ R2 is the first frequency domain offset
  • n is a natural number
  • n takes 0, 1, 2.
  • the second terminal device maps the reference signal in the frequency domain resources in the first frequency domain corresponding to one OFDM symbol, and the second terminal device can map according to the first frequency domain.
  • the first reference signal mapping pattern information or the first data mapping pattern included in the pattern information determines the number N of REs included in the mapping group, and determines the corresponding OFDM symbol according to the number N of REs included in the mapping group and the first frequency domain offset.
  • the second terminal device may determine according to the first reference signal mapping pattern information or the first data mapping pattern included in the first frequency domain mapping pattern information
  • the eighth form of the first frequency domain mapping pattern information a variety of frequency domain mapping pattern information can be stored in the network device, the first terminal device, and the second terminal device, and each frequency domain mapping pattern
  • the information corresponds to an index or number, that is, the information included in the frequency domain mapping pattern information in this form corresponds to an index or number; at this time, the network device or the first terminal device sends the first frequency domain to the second terminal device When mapping the pattern information, the index or number of the first frequency domain mapping pattern may be sent.
  • the network device, the first terminal device, and the second terminal device may not store multiple frequency domain mapping patterns.
  • the various information included in the frequency domain mapping pattern information in this form may be combined in any manner. It is stored in the corresponding list, or each item of information included in the frequency domain mapping style information in this form is independently stored in its own list.
  • the ninth form of the first frequency domain mapping pattern information includes the first reference signal mapping pattern information and the first data mapping pattern information, and the frequency in the first frequency domain corresponding to one OFDM symbol
  • the first frequency domain mapping pattern information may further include the first frequency domain offset of the RE used for mapping the reference signal in the mapping group.
  • the first frequency domain mapping pattern information when data needs to be mapped in the frequency domain resources within the first frequency domain corresponding to an OFDM symbol, the first frequency domain mapping pattern information does not include the second frequency of the RE used to map the data in the mapping group. Domain bias. Therefore, when data needs to be mapped in frequency domain resources within the first frequency domain corresponding to one OFDM symbol, the first terminal device may also obtain the second frequency domain offset.
  • the method for the first terminal device to obtain the second frequency domain offset refer to the above description, which will not be repeated here.
  • the second frequency domain offset may not be obtained, refer to the description in the foregoing manner, and details are not repeated here.
  • the first terminal device determines the frequency domain of at least one OFDM symbol in the first time-frequency resource according to the first frequency domain mapping pattern information.
  • Mapping the reference signal and/or data in the resource may include: the first terminal device in the frequency domain resource of at least one OFDM symbol in the first time-frequency resource according to the first frequency domain mapping pattern information and the second frequency domain offset Map reference signals and/or data.
  • the second terminal device When data is mapped in frequency domain resources in the first frequency domain corresponding to one OFDM symbol, the second terminal device acquires reference signals and/or data on the first time-frequency resource according to the first frequency domain mapping pattern information, It may include: the second terminal device acquires the reference signal and/or data on the first time-frequency resource according to the first frequency domain mapping pattern information and the second frequency domain offset.
  • the ninth form of the first frequency domain mapping pattern information a variety of frequency domain mapping pattern information can be stored in the network device, the first terminal device, and the second terminal device, and each frequency domain mapping pattern
  • the information corresponds to an index or number, that is, the information included in the frequency domain mapping pattern information in this form corresponds to an index or number; at this time, the network device or the first terminal device sends the first frequency domain to the second terminal device When mapping the pattern information, the index or number of the first frequency domain mapping pattern may be sent.
  • the network device, the first terminal device, and the second terminal device may not store multiple frequency domain mapping patterns.
  • the various information included in the frequency domain mapping pattern information in this form may be combined in any manner. It is stored in the corresponding list, or each item of information included in the frequency domain mapping style information in this form is independently stored in its own list.
  • the tenth form of the first frequency domain mapping pattern information includes the first reference signal mapping pattern information and the first data mapping pattern information, and the frequency in the first frequency domain corresponding to one OFDM symbol
  • the first frequency domain mapping style information may further include the second frequency domain offset of the RE used to map the data in the mapping group.
  • the first frequency domain mapping pattern information does not include the M REs used for mapping the reference signal in the mapping group
  • Each first frequency domain offset therefore, when a reference signal needs to be mapped in a frequency domain resource within the first frequency domain corresponding to an OFDM symbol, the first terminal device can also obtain the reference signal used for mapping the reference signal in the mapping group.
  • the first frequency domain offset of each of the M REs is not included in the mapping group.
  • the first terminal device acquiring the first frequency domain offset of each of the M REs used for mapping reference signals in the mapping group can be implemented by the following but not limited to the following two implementation manners.
  • the first terminal device acquires 0 as the first frequency domain offset.
  • the second terminal device may receive the first frequency domain offset of the RE used for mapping the reference signal in the mapping group from the first terminal device.
  • the first terminal device determines the first frequency domain offset of each of the M REs used for mapping the reference signal in the mapping group according to the current data transmission characteristics and the fifth preset rule, and the fifth preset rule is M
  • the first frequency domain offset of each RE is between 0 and N-1.
  • the first terminal device determines an N and M according to the current data transmission characteristics, and the first terminal device determines that M values between 0 and N-1 are M first frequency domain offsets.
  • the second terminal device may receive the first frequency domain offset of the RE used for mapping the reference signal in the mapping group from the first terminal device.
  • the first terminal device receives from the network device the respective first frequency domain offsets of the M REs used for mapping the reference signal in the mapping group, and the network device obtains the respective first frequency domain offsets of the M REs.
  • the method is the same as the method in which the first terminal device obtains the first frequency domain offset of each of the M REs used for mapping reference signals in the mapping group in the first implementation manner or the second implementation manner.
  • the second terminal device may receive the first frequency domain offset of the RE used for mapping the reference signal in the mapping group from the first terminal device or the network device.
  • the first A terminal device may not obtain the first frequency domain offset.
  • the first terminal device uses the first frequency domain mapping pattern information to locate at least one OFDM symbol in the first time-frequency resource
  • Mapping the reference signal and/or data in the frequency domain resource may include: the first terminal device according to the first frequency domain mapping pattern information and the first frequency domain offset of each of the M REs used for mapping the reference signal in the mapping group, The reference signal and/or data are mapped in the frequency domain resource of at least one OFDM symbol in the first time-frequency resource.
  • the second terminal device obtains the reference signal and/or data on the first time-frequency resource according to the first frequency domain mapping pattern information , May include: the second terminal device acquires the reference signal on the first time-frequency resource according to the first frequency domain mapping pattern information and the first frequency domain offset of each of the M REs used for mapping the reference signal in the mapping group and/ Or data.
  • first frequency domain mapping pattern information multiple frequency domain mapping pattern information can be stored in the network device, the first terminal device, and the second terminal device, and each frequency domain mapping pattern
  • the information corresponds to an index or number, that is, the information included in the frequency domain mapping pattern information in this form corresponds to an index or number; at this time, the network device or the first terminal device sends the first frequency domain to the second terminal device
  • mapping style information the index or number of the first frequency domain mapping style information may be sent.
  • the network device, the first terminal device, and the second terminal device may not store multiple frequency domain mapping patterns.
  • the various information included in the frequency domain mapping pattern information in this form may be combined in any manner. It is stored in the corresponding list, or each item of information included in the frequency domain mapping style information in this form is independently stored in its own list.
  • the first frequency domain mapping style information includes first reference signal mapping style information and first data mapping style information.
  • the first frequency domain mapping pattern information when a reference signal needs to be mapped in a frequency domain resource in the first frequency domain corresponding to an OFDM symbol, the first frequency domain mapping pattern information does not include the first frequency domain offset parameter set, The first preselected frequency domain offset and the first frequency domain offset of each of the M REs used for mapping the reference signal in the mapping group.
  • the first frequency domain mapping pattern information does not include the second frequency domain offset of each of the H REs used to map data in the mapping group .
  • the first terminal device may also obtain the first frequency domain offset parameter set and the first preselected frequency domain offset, or The first terminal device may also obtain the first frequency domain offset of each of the M REs used for mapping the reference signal in the mapping group.
  • the method for the first terminal device to obtain the first frequency domain offset parameter set and the first preselected frequency domain offset please refer to the description in the above description, which will not be repeated here.
  • the first frequency domain offset method for the first terminal device to obtain each of the M REs used for mapping the reference signal in the mapping group refer to the description in the foregoing, and will not be repeated here.
  • the first frequency domain offset parameter set, the first preselected frequency domain offset, and the first frequency domain offset may not be acquired, refer to the description in the foregoing manner, and details are not repeated here.
  • the first terminal device may also obtain the second frequency domain offset of the RE used to map the data in the mapping group.
  • the method for the first terminal device to obtain the second frequency domain offset refer to the description in the foregoing, and will not be repeated here.
  • the second frequency domain offset refer to the description in the foregoing manner, and details are not repeated here.
  • the reference signal needs to be mapped in the frequency domain resource in the first frequency domain corresponding to one OFDM symbol
  • the first terminal device is configured to use the first frequency domain mapping pattern information in the at least one OFDM symbol in the first time-frequency resource.
  • the mapping of reference signals and/or data in frequency domain resources may include: the first terminal device according to the first frequency domain mapping pattern information, the first frequency domain offset parameter set, the first preselected frequency domain offset, and the second frequency domain offset Is configured to map the reference signal and/or data in the frequency domain resource of at least one OFDM symbol in the first time-frequency resource; or, the first terminal device uses the first frequency domain mapping pattern information to map the reference signal in the mapping group
  • the first frequency domain offset of the RE and the second frequency domain offset of the RE used to map data in the mapping group, and the reference signal and/or the frequency domain resource of at least one OFDM symbol in the first time-frequency resource are mapped data.
  • the second terminal device When a reference signal is mapped to a frequency domain resource in the first frequency domain corresponding to an OFDM symbol and the first data mapping pattern information includes the first density and the first density is not 0, the second terminal device according to the first frequency domain
  • the mapping pattern information, acquiring the reference signal and/or data mapped in the frequency domain resource of at least one OFDM symbol in the first time-frequency resource, may include: the second terminal device according to the first frequency domain mapping pattern information, the first frequency The domain offset parameter set, the first preselected frequency domain offset, and the second frequency domain offset of the RE used for mapping data in the mapping group, and the reference signal and/or data are obtained on the first time-frequency resource; or, the second According to the first frequency domain mapping pattern information, the first frequency domain offset of the RE used for mapping the reference signal in the mapping group, and the second frequency domain offset of the RE used for mapping data in the mapping group, the terminal device Obtain reference signals and/or data from frequency resources.
  • the eleventh form of the first frequency domain mapping style information a variety of frequency domain mapping style information can be stored in the network device, the first terminal device, and the second terminal device.
  • the style information corresponds to an index or number, that is, the various information included in the frequency domain mapping style information in this form corresponds to an index or number; at this time, the network device or the first terminal device sends the first frequency to the second terminal device.
  • the index or number of the first frequency domain mapping pattern may be sent when the domain mapping pattern information is used.
  • the network device, the first terminal device, and the second terminal device may store multiple frequency domain mapping patterns, and the information of some of the multiple frequency domain mapping patterns may be as shown in Table 2.
  • the network device, the first terminal device, and the second terminal device may not store multiple frequency domain mapping patterns.
  • the various information included in the frequency domain mapping pattern information in this form may be combined in any manner. It is stored in the corresponding list, or each item of information included in the frequency domain mapping style information in this form is independently stored in its own list.
  • the reference signal is an AGC reference signal
  • an OFDM symbol in the above-mentioned embodiment is an AGC symbol
  • the second terminal device receives the first frequency domain mapping pattern information
  • Fig. 9 is a first flowchart of a communication method provided by an embodiment of this application. Referring to Fig. 9, the method of this embodiment includes:
  • Step S201 Determine, according to the first frequency domain mapping pattern information, a first total number of REs mapped with AGC reference signals and a second total number of REs mapped with data in frequency domain resources within the first frequency domain corresponding to the AGC symbol.
  • the second terminal device When the first reference signal mapping style information includes information indicating that there is no RE used for mapping the reference signal in the frequency domain resources in the first frequency domain corresponding to the AGC symbol, the second terminal device according to the first reference signal mapping style information It is determined that the first total number of REs to which the AGC reference signal is mapped in the frequency domain resources in the first frequency domain corresponding to the AGC symbol is zero.
  • the second terminal device When the first reference signal mapping style information includes information indicating that REs used for mapping reference signals are present in the frequency domain resources in the first frequency domain corresponding to the AGC symbols: in one manner, the second terminal device The first density included in the data mapping style information and the number of parameters included in the first frequency domain offset parameter set are determined to determine the first RE to which the AGC reference signal is mapped in the frequency domain resource in the first frequency domain corresponding to the AGC symbol One total.
  • the first total number of REs mapped with AGC reference signals in the frequency domain resources within the first frequency domain corresponding to the AGC symbol is the total number of REs scheduled in the frequency domain resources of the AGC symbol for the current data transmission Half of it.
  • the second terminal device determines the corresponding AGC symbol according to the first density included in the first data mapping pattern information and the number of the first frequency domain offset of the RE used for mapping the reference signal in the mapping group The first total number of REs to which the AGC reference signal is mapped in the frequency domain resources within the first frequency domain.
  • the second terminal device can determine the mapping in the frequency domain resource in the first frequency domain corresponding to the AGC symbol according to the first reference signal mapping pattern information
  • the first total number of REs mapped with AGC reference signals in the frequency domain resources within the first frequency domain corresponding to the AGC symbol is equal to the total number of REs scheduled for the current data transmission in the frequency domain resources of the AGC symbol Half of it.
  • the second terminal device determines the first frequency domain range corresponding to the AGC symbol according to the first reference signal mapping pattern information and the number of parameters included in the first frequency domain offset parameter set The first total number of REs to which the AGC reference signal is mapped in the frequency domain resources within.
  • the second terminal device determines the corresponding AGC symbol according to the first reference signal mapping pattern information and the number of the first frequency domain offset of the RE used for mapping the reference signal in the mapping group
  • the first reference signal mapping style information indicates that N is equal to 4, that is, the number of REs included in a mapping group is 4, and there are two first frequency domain offsets, which indicates that the reference signal mapping in each mapping group is If the number of REs is 2, the second terminal device determines that the first total number is equal to half of the total number of REs scheduled in the frequency domain resources of the AGC symbol for current data transmission.
  • the second terminal device determines the frequency in the first frequency domain corresponding to the AGC symbol according to the first reference signal mapping pattern information. The first total number of REs to which the AGC reference signal is mapped in the domain resource.
  • the second terminal device determines, according to the first data mapping style information, the information in the first frequency domain on the AGC symbol The second total number of REs to which data is mapped in the frequency domain resource. Wherein, when the first density is not 0, the second total is equal to the total number of REs scheduled in the frequency domain resources of the AGC symbol for the current data transmission multiplied by the first density. When the first density is 0 or the first data mapping style information includes the second indication information, the second total is 0.
  • the second terminal device determines the second total number according to the total number of REs scheduled in the frequency domain resources of the AGC symbol for current data transmission and the first total number. Specifically, the second total is equal to the total number of REs scheduled in the frequency domain resources of the AGC symbol for the current data transmission minus the first total.
  • Step S202 Perform AGC according to the first total and the second total.
  • the second terminal device performs AGC according to the sum of the first total and the second total.
  • the specific AGC process will not be repeated in this embodiment.
  • This embodiment provides a method for the second terminal device to perform AGC according to the first frequency domain mapping pattern information.
  • FIG. 10 is a second flowchart of a communication method provided by an embodiment of this application. Referring to FIG. 10, the method in this embodiment includes:
  • Step S301 Determine the first time period in the AGC symbol period according to the first frequency domain mapping pattern information, the time required for the second terminal device to perform AGC, and the current SCS.
  • the AGC symbol period is a period of time lasting one AGC symbol length.
  • the first terminal device converts the signal on the AGC symbol into the h segment occupying 1 AGC symbol period A repeated signal, where h is a natural number greater than or equal to 1, and the h-segment repeated signal is sent to the second terminal device within the AGC symbol period.
  • the second terminal device obtains h according to the first reference signal mapping pattern information and/or the first data mapping pattern information in the first frequency domain mapping pattern information. Then, the second terminal device divides the length of the AGC symbol without CP into h parts, each of which is the duration of a preselected time period; then, the second terminal device determines that the second terminal device performs AGC according to the duration of the second terminal device performing AGC
  • the number of pre-selected time periods occupied by AGC J, H is the duration for the second terminal device to perform AGC. If h is greater than J, the second terminal device determines that the remaining hJ preselected time periods are the first time period.
  • the first frequency domain offset parameter set includes one parameter or has a first frequency domain offset.
  • the length of the AGC symbol without the CP is 33.33us
  • Step S302 is performed in the case where the reference signal is mapped to the frequency domain resource in the first frequency domain corresponding to the AGC symbol:
  • Step S302 Receive a reference signal from the RE mapped with the reference signal in the frequency domain resource in the first frequency domain corresponding to the AGC symbol in the first time period, so as to perform time-frequency synchronization and channel estimation.
  • the second terminal device may map the pattern information according to the first reference signal or according to the first reference signal. Mapping style information, the first frequency domain offset parameter set, and the first preselected frequency domain offset or determine the AGC symbol according to the first reference signal mapping style information and the first frequency domain offset of the RE used for mapping the reference signal in the mapping group
  • the REs of the reference signal are mapped in the frequency domain resources in the corresponding first frequency domain.
  • the second terminal device After determining that the RE to which the reference signal is mapped in the frequency domain resource in the first frequency domain corresponding to the AGC symbol, the second terminal device obtains information from the frequency domain resource in the first frequency domain corresponding to the AGC symbol in the first time period The reference signal is received on the RE where the reference signal is mapped to perform time-frequency synchronization and channel estimation. This can increase the accuracy of time-frequency synchronization and channel estimation performed by the second terminal device.
  • the second terminal device a may receive the reference signal from the RE to which the reference signal is mapped in the remaining 2 preselected time periods.
  • the second terminal device b may receive the reference signal from the RE mapped with the reference signal in the remaining 1 preselected time period.
  • Step S303 is executed when data is mapped in the frequency domain resource in the first frequency domain corresponding to the AGC symbol:
  • Step S303 In a first time period, data is received from the RE mapped with data in the frequency domain resource in the first frequency domain corresponding to the AGC symbol, so as to demodulate and decode the received data.
  • the second terminal device may use the first data mapping pattern information and the second frequency domain offset or Determine, according to the first data mapping style information, the RE to which data is mapped in the frequency domain resource in the first frequency domain corresponding to the AGC symbol.
  • the second terminal device determines, according to the first data mapping style information, the RE to which data is mapped in the frequency domain resource in the first frequency domain corresponding to the AGC symbol, including: : The second terminal device determines the mapping in the frequency domain resource in the first frequency domain corresponding to the AGC symbol according to the RE mapped to the reference signal in the frequency domain resource in the first frequency domain corresponding to the AGC symbol and the first indication information RE with data.
  • the first terminal device or the network device obtains the second frequency domain offset, the second terminal device except from the first terminal device or network device The device receives the first frequency domain mapping style information, and also receives the second frequency domain offset from the first terminal device or the network device.
  • the second terminal device After determining the RE to which data is mapped in the frequency domain resource in the first frequency domain corresponding to the AGC symbol, the second terminal device selects from the frequency domain resource in the first frequency domain corresponding to the AGC symbol in the first time period Data is received on the RE mapped with the data, and the received data is demodulated and decoded.
  • the second terminal device a may receive data from the mapping data RE in the remaining 2 preselected time periods.
  • the second terminal device b may receive data from the data mapped RE in the remaining 1 preselected time period.
  • This embodiment provides that if the length of the current AGC symbol is so long that it is much longer than the time for the second terminal device to perform AGC, the first terminal device or network device determines the first frequency that matches the current type of time domain resources.
  • domain mapping pattern information not only AGC can be performed on the AGC symbol, but also time-frequency synchronization and channel estimation can be performed according to the AGC reference signal, and/or the data on the AGC symbol can be received, demodulated and decoded.
  • the operations and steps implemented by the terminal device may also be implemented by components (for example, a chip or a circuit) that can be used for the terminal device, which is not limited in the embodiment of the present application.
  • the operations and steps implemented by the network device can also be implemented by components (for example, a chip or a circuit) that can be used for the network device, which is not limited in the embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a communication device provided by an embodiment of this application.
  • the communication device may be a first terminal device, or a component of the first terminal device, or may be another communication module.
  • the communication device of this embodiment includes: a receiving module 111, a processing module 112, and a sending module 113;
  • the receiving module 111 or the processing module 112 is configured to obtain first frequency domain mapping pattern information, where the first frequency domain mapping pattern includes first reference signal mapping pattern information and first data mapping pattern information, and the first reference signal mapping pattern
  • the pattern information is used to indicate a pattern of mapping reference signals in a frequency domain resource of an orthogonal frequency division multiplexing OFDM symbol
  • the first data mapping pattern information is used to indicate a pattern of mapping data in a frequency domain resource of an OFDM symbol
  • the first reference signal mapping style information is one of at least two types of reference signal mapping style information
  • the first data mapping style information is one of at least two types of data mapping style information
  • the processing module 112 is further configured to map reference signals and/or data in the frequency domain resource of at least one OFDM symbol in the first time-frequency resource according to the first frequency domain mapping pattern information;
  • the sending module 113 is configured to send the reference signal and/or the data to the second terminal device on the first time-frequency resource.
  • the receiving module 111 is configured to obtain first frequency domain mapping pattern information, and includes: the receiving module 111 is specifically configured to receive the first frequency domain mapping pattern information from a network device.
  • the processing module 112 is configured to obtain first frequency-domain mapping pattern information, including: the processing module 112 is specifically configured to determine the information from the at least two reference signal mapping pattern information.
  • the first reference signal mapping style information, the at least two types of reference signal mapping style information are predefined or configured by high-level signaling; and the first data mapping is determined from the at least two types of data mapping style information Style information, the at least two types of data mapping style information are predefined or configured by high-level signaling.
  • the sending module 113 is further configured to send the first frequency domain mapping pattern information to the second terminal device.
  • the reference signal is an automatic gain control AGC reference signal, or the reference signal is a demodulation reference signal DMRS.
  • every N consecutive resource particle REs in a frequency domain resource of an OFDM symbol are a mapping group, and the N REs in the mapping group include M REs for mapping reference signals , M ⁇ N, the N is a positive integer, and the M is an integer;
  • the first reference signal mapping pattern information includes information indicating that N consecutive REs belong to a mapping group; or,
  • the first reference signal mapping pattern information includes information indicating that there is no RE for mapping the reference signal in the frequency domain resource of one OFDM symbol; or,
  • the first reference signal mapping pattern information includes information indicating that REs used for mapping reference signals exist in the frequency domain resources of one OFDM symbol; or,
  • the first reference signal mapping pattern information includes information indicating that there are M REs used for mapping the reference signal among the consecutive N REs.
  • every N consecutive resource particles RE in the frequency domain resource of an OFDM symbol is a mapping group, and the N is a positive integer;
  • the first frequency domain mapping pattern information includes a first preselected frequency domain offset; wherein, the first RE or the last RE in the mapping group is a reference RE, and the M for mapping reference signals in the mapping group
  • the RE with the least interval between the RE and the reference RE is the start RE
  • the first preselected frequency domain offset is the frequency domain offset between the start RE and the reference RE, so Said M is a positive integer, M ⁇ N.
  • every N consecutive resource particles RE in the frequency domain resource of an OFDM symbol is a mapping group, and the N is a positive integer; the first frequency domain mapping pattern information does not include the first frequency domain mapping pattern information.
  • a preselected frequency domain offset, the first preselected frequency domain offset is the frequency domain offset between the start RE and the reference RE, and the first RE or the last RE in the mapping group is the reference RE Among the M REs used for mapping reference signals in the mapping group, the RE with the least interval between the RE and the reference RE is the start RE, and the M is a positive integer, and M ⁇ N;
  • the processing module 112 or the receiving module 111 is further configured to obtain the first preselected frequency domain offset
  • the processing module 112 is configured to map reference signals and/or data in a frequency domain resource of at least one OFDM symbol in a first time-frequency resource according to the first frequency domain mapping pattern information, and includes: the processing module 112, specifically configured to map a reference signal and/or a frequency domain resource of at least one OFDM symbol in the first time-frequency resource according to the first frequency domain mapping pattern information and the first preselected frequency domain offset Or data.
  • every N consecutive resource particles RE in the frequency domain resource of an OFDM symbol is a mapping group, and the N is a positive integer;
  • the first frequency domain mapping pattern information includes the first Frequency domain offset parameter set;
  • the sum of the first parameter included in the first frequency domain offset parameter set and the first preselected frequency domain offset is the first frequency domain of the first RE among the M REs used for mapping reference signals in the mapping group Offset, the first RE is any RE of the M REs, the first parameter is a parameter corresponding to the first RE in the first frequency domain offset parameter set, and the mapping group
  • the first RE or the last RE in is a reference RE
  • the first frequency domain offset of the first RE is the frequency domain offset between the first RE and the reference RE
  • the M is a positive integer , M ⁇ N
  • the RE with the least interval between the RE and the reference RE is the start RE
  • the first preselected frequency domain offset is the start Frequency domain offset between RE and reference RE.
  • every N consecutive resource particles RE in the frequency domain resource of an OFDM symbol is a mapping group, and the N is a positive integer; the first frequency domain mapping pattern information does not include the first frequency domain mapping pattern information.
  • a frequency domain offset parameter set where the sum of the first parameter included in the first frequency domain offset parameter set and the first preselected frequency domain offset is one of the M REs used for mapping reference signals in the mapping group.
  • the first frequency domain offset of the first RE, the first RE is any RE of the M REs, and the first parameter is the first frequency domain offset parameter set and the first RE
  • the first RE or the last RE in the mapping group is a reference RE
  • the first frequency domain offset of the first RE is the frequency domain offset of the first RE relative to the reference RE Set
  • the M is an integer, and M ⁇ N;
  • the RE with the least interval between the RE and the reference RE among the REs used to map the reference signal in the mapping group is the start RE, and the first preselected frequency domain
  • the offset is the frequency domain offset between the starting RE and the reference
  • the processing module 112 or the receiving module 111 is further configured to obtain the first frequency domain offset parameter set
  • the processing module 112 is configured to map reference signals and/or data in a frequency domain resource of at least one OFDM symbol in a first time-frequency resource according to the first frequency domain mapping pattern information, and includes: the processing module 112, specifically configured to map a reference signal and/or a frequency domain resource of at least one OFDM symbol in the first time-frequency resource according to the first frequency domain mapping pattern information and the first frequency domain offset parameter set data.
  • every N consecutive resource particles RE in a frequency domain resource of an OFDM symbol is a mapping group, and the N is a positive integer;
  • the first frequency domain mapping pattern information includes the The mapping group is used to map the respective first frequency domain offsets of the M REs of the reference signal; wherein, the first RE or the last RE in the mapping group is the reference RE, and for the first RE of the M REs RE, the first frequency domain offset of the first RE is the frequency domain offset between the first RE and the reference RE, the M is a positive integer, and M ⁇ N.
  • every N consecutive resource particles RE in the frequency domain resource of an OFDM symbol is a mapping group, and the N is a positive integer;
  • the first frequency domain mapping pattern information does not include all The first frequency domain offset of each of the M REs used for mapping reference signals in the mapping group, the first RE or the last RE in the mapping group is a reference RE, and for any one of the M REs A first RE, the first frequency domain offset of the first RE is the frequency domain offset between the first RE and the reference RE, the M is a positive integer, and M ⁇ N;
  • the processing module 112 or the receiving module 111 is further configured to obtain respective first frequency domain offsets of the M REs used for mapping reference signals in the mapping group;
  • the processing module 112 is configured to map reference signals and/or data in a frequency domain resource of at least one OFDM symbol in a first time-frequency resource according to the first frequency domain mapping pattern information, and includes: the processing module 112. Specifically, according to the first frequency domain mapping pattern information and the first frequency domain offset of each of the M REs used for mapping reference signals in the mapping group, at least one OFDM in the first time-frequency resource The reference signal and/or data are mapped in the frequency domain resource of the symbol.
  • every N consecutive resource particles RE in a frequency domain resource of an OFDM symbol is a mapping group, where N is a positive integer; and the first data mapping pattern information includes: The first density of REs used to map the data in the mapping group; wherein the first density is the ratio of the number H of REs used to map the data in the mapping group to the N, where H is Integer, H ⁇ N; or,
  • First indication information where the first indication information indicates that among the frequency domain resources within the first frequency domain corresponding to one OFDM symbol, all REs other than the RE for which the reference signal is mapped are REs for mapping the data ;or,
  • the second indication information where the second indication information indicates that there is no RE used for mapping the data among the frequency domain resources in the first frequency domain corresponding to one OFDM symbol.
  • the first density is one of the following values:
  • the first frequency domain mapping pattern information includes the second frequency domain offset of each of the H REs used to map the data in the mapping group, where H is an integer, and H ⁇ N; wherein, the first RE or the last RE in the mapping group is a reference RE, and for any second RE in the H REs, the second frequency domain offset of the second RE is Frequency domain offset between the second RE and the reference RE.
  • the first frequency domain mapping pattern information does not include the second frequency domain offset of each of the H REs used for mapping the data in the mapping group, and the The first RE or the last RE is the reference RE.
  • the second frequency domain offset of the second RE is the difference between the second RE and the reference RE Frequency domain offset
  • the H is an integer, H ⁇ N;
  • the processing module 112 or the receiving module 111 is further configured to obtain the respective second frequency domain offsets of the H REs used for mapping the data in the mapping group;
  • the processing module 112 is configured to map reference signals and/or data in a frequency domain resource of at least one OFDM symbol in a first time-frequency resource according to the first frequency domain mapping pattern information, and includes: the processing module 112. Specifically, according to the first frequency domain mapping pattern information and the second frequency domain offset of each of the H REs used for mapping the data in the mapping group, at least one of the first time-frequency resources The reference signal and/or data are mapped in the frequency domain resources of the OFDM symbol.
  • the communication device in this embodiment may be a terminal, or may be a chip applied to the terminal or other combination devices or components having the above terminal functions.
  • the receiving module may be a receiver, which may include an antenna and a radio frequency circuit, etc.
  • the processing module may be one or more processors, such as a central processing unit (CPU), and the sending module may be a transmitter , Can include antennas and radio frequency circuits, etc., where the receiver and transmitter can be integrated transceivers.
  • the receiving module may be a radio frequency unit
  • the processing module may be a processor
  • the sending module may be a radio frequency unit.
  • the receiving module may be the input interface of the chip system
  • the processing module may be the processor of the chip system
  • the sending module may be the output interface of the chip system.
  • the communication device in this embodiment may be used to execute the technical solutions corresponding to the first terminal device in the foregoing method embodiments, and its implementation principles and technical effects are similar, and will not be repeated here.
  • FIG. 12 is a schematic structural diagram of a communication device provided by another embodiment of this application.
  • the communication device may be a second terminal device, or a component of the second terminal device, or may be another communication module.
  • the communication device of this embodiment includes: a receiving module 121 and a processing module 122;
  • the receiving module 121 is configured to receive first frequency domain mapping pattern information from a first terminal device or a network device, where the first frequency domain mapping pattern includes first reference signal mapping pattern information and first data mapping pattern information, and A reference signal mapping pattern information is used to indicate a pattern of mapping a reference signal in a frequency domain resource of an orthogonal frequency division multiplexing OFDM symbol, and the first data mapping pattern information is used to indicate a pattern of a frequency domain resource of an OFDM symbol
  • the first reference signal mapping style information is one of at least two types of reference signal mapping style information, and the first data mapping style information is one of at least two types of data mapping style information;
  • the first frequency domain mapping pattern information is used by the first terminal device to map reference signals and/or data in the frequency domain resource of at least one OFDM symbol in the first time-frequency resource;
  • the processing module 122 is configured to obtain the reference signal and/or the data on the first time-frequency resource according to the first frequency domain pattern information.
  • the reference signal is an automatic gain control AGC reference signal, or the reference signal is a demodulation reference signal DMRS.
  • every N consecutive resource particle REs in a frequency domain resource of an OFDM symbol are a mapping group, and the N REs in the mapping group include M REs for mapping reference signals , M ⁇ N, the N is a positive integer, and the M is an integer;
  • the first reference signal mapping pattern information includes information indicating that N consecutive REs belong to a mapping group; or,
  • the first reference signal mapping pattern information includes information indicating that there is no RE for mapping the reference signal in the frequency domain resource of one OFDM symbol; or,
  • the first reference signal mapping pattern information includes information indicating that REs used for mapping reference signals exist in the frequency domain resources of one OFDM symbol; or,
  • the first reference signal mapping pattern information includes information indicating that there are M REs used for mapping the reference signal among the consecutive N REs.
  • every N consecutive resource particles RE in the frequency domain resource of an OFDM symbol is a mapping group, and the N is a positive integer;
  • the first frequency domain mapping pattern information includes a first preselected frequency domain offset; wherein, the first RE or the last RE in the mapping group is a reference RE, and the M for mapping reference signals in the mapping group
  • the RE with the least interval between the RE and the reference RE is the start RE
  • the first preselected frequency domain offset is the frequency domain offset between the start RE and the reference RE, so Said M is a positive integer, M ⁇ N.
  • every N consecutive resource particles RE in the frequency domain resource of an OFDM symbol is a mapping group, and the N is a positive integer; the first frequency domain mapping pattern information does not include the first frequency domain mapping pattern information.
  • a preselected frequency domain offset, the first preselected frequency domain offset is the frequency domain offset between the start RE and the reference RE, and the first RE or the last RE in the mapping group is the reference RE Among the M REs used for mapping reference signals in the mapping group, the RE with the least interval between the RE and the reference RE is the start RE, and the M is a positive integer, and M ⁇ N;
  • the receiving module 121 or the processing module 122 is further configured to obtain the first preselected frequency domain offset; the processing module 122 is configured to obtain information in the first time-frequency resource according to the first frequency domain pattern information
  • the above method for acquiring the reference signal and/or the data includes: the processing module 122, specifically configured to perform data processing in the first frequency domain based on the first frequency domain mapping pattern information and the first preselected frequency domain offset.
  • the reference signal and/or the data are acquired on time-frequency resources.
  • every N consecutive resource particles RE in the frequency domain resource of an OFDM symbol is a mapping group, and the N is a positive integer;
  • the first frequency domain mapping pattern information includes the first Frequency domain offset parameter set; the sum of the first parameter included in the first frequency domain offset parameter set and the first preselected frequency domain offset is the first of the M REs used for mapping reference signals in the mapping group
  • a first frequency domain offset of an RE the first RE is any RE of the M REs, and the first parameter is the first frequency domain offset parameter set corresponding to the first RE
  • the first RE or the last RE in the mapping group is the reference RE, and the first frequency domain offset of the first RE is the frequency domain offset between the first RE and the reference RE
  • the M is a positive integer, and M ⁇ N;
  • the RE with the least interval between the RE and the reference RE among the REs used for mapping the reference signal in the mapping group is the start RE, and the first preselected frequency domain
  • the offset is the frequency domain offset between the start RE and the reference RE.
  • every N consecutive resource particles RE in the frequency domain resource of an OFDM symbol is a mapping group, and the N is a positive integer; the first frequency domain mapping pattern information does not include the first frequency domain mapping pattern information.
  • a frequency domain offset parameter set where the sum of the first parameter included in the first frequency domain offset parameter set and the first preselected frequency domain offset is one of the M REs used for mapping reference signals in the mapping group.
  • the first frequency domain offset of the first RE, the first RE is any RE of the M REs, and the first parameter is the first frequency domain offset parameter set and the first RE
  • the first RE or the last RE in the mapping group is a reference RE
  • the first frequency domain offset of the first RE is the frequency domain offset of the first RE relative to the reference RE Set
  • the M is an integer, and M ⁇ N;
  • the RE with the least interval between the RE and the reference RE among the REs used to map the reference signal in the mapping group is the start RE, and the first preselected frequency domain
  • the offset is the frequency domain offset between the starting RE and the reference
  • the receiving module 121 or the processing module 122 is further configured to obtain the first frequency domain offset parameter set; the processing module 122 is configured to obtain the first frequency domain mapping pattern information according to the first time Obtaining the reference signal and/or the data on the frequency resource includes: the processing module 122, specifically configured to, according to the first frequency domain mapping pattern information and the first frequency domain offset parameter set, Acquiring the reference signal and/or the data from the first time-frequency resource.
  • every N consecutive resource particles RE in a frequency domain resource of an OFDM symbol is a mapping group, and the N is a positive integer;
  • the first frequency domain mapping pattern information includes the The mapping group is used to map the respective first frequency domain offsets of the M REs of the reference signal; wherein, the first RE or the last RE in the mapping group is the reference RE, and for the first RE of the M REs RE, the first frequency domain offset of the first RE is the frequency domain offset between the first RE and the reference RE, the M is a positive integer, and M ⁇ N.
  • every N consecutive resource particles RE in the frequency domain resource of an OFDM symbol is a mapping group, and the N is a positive integer;
  • the first frequency domain mapping pattern information does not include all The first frequency domain offset of each of the M REs used for mapping reference signals in the mapping group, the first RE or the last RE in the mapping group is a reference RE, and for any one of the M REs A first RE, the first frequency domain offset of the first RE is the frequency domain offset between the first RE and the reference RE, the M is a positive integer, and M ⁇ N;
  • the receiving module 121 or the processing module 122 is further configured to obtain the respective first frequency domain offsets of the M REs used for mapping reference signals in the mapping group; the processing module 122 is configured to obtain the first frequency domain offset according to the first
  • the frequency domain mapping style information is used to obtain the reference signal and/or the data on the first time-frequency resource, including: the processing module 122 is specifically configured to perform according to the first frequency domain mapping style information and the data The first frequency domain offset of each of the M REs used for mapping the reference signal in the mapping group, and the reference signal and/or the data are acquired on the first time-frequency resource.
  • every N consecutive resource particles RE in a frequency domain resource of an OFDM symbol is a mapping group, where N is a positive integer; and the first data mapping pattern information includes: The first density of REs used to map the data in the mapping group; wherein the first density is the ratio of the number H of REs used to map the data in the mapping group to the N, where H is Integer, H ⁇ N; or,
  • First indication information where the first indication information indicates that among the frequency domain resources within the first frequency domain corresponding to one OFDM symbol, all REs other than the RE for which the reference signal is mapped are REs for mapping the data ;or,
  • the second indication information where the second indication information indicates that there is no RE used for mapping the data among the frequency domain resources in the first frequency domain corresponding to one OFDM symbol.
  • the first density is one of the following values:
  • the first frequency domain mapping pattern information includes the second frequency domain offset of each of the H REs used to map the data in the mapping group, where H is an integer, and H ⁇ N; wherein, the first RE or the last RE in the mapping group is a reference RE, and for any second RE in the H REs, the second frequency domain offset of the second RE is Frequency domain offset between the second RE and the reference RE.
  • the first frequency domain mapping pattern information does not include the second frequency domain offset of each of the H REs used for mapping the data in the mapping group, and the The first RE or the last RE is the reference RE.
  • the second frequency domain offset of the second RE is the difference between the second RE and the reference RE Frequency domain offset
  • the H is an integer, H ⁇ N;
  • the receiving module 121 or the processing module 122 is further configured to obtain the respective second frequency domain offsets of the H REs used for mapping the data in the mapping group; the processing module 122 is configured to A frequency domain mapping pattern information, acquiring the reference signal and/or the data on the first time-frequency resource, including: the processing module 122, specifically configured to obtain the reference signal and/or the data according to the first frequency domain mapping pattern information and The respective second frequency domain offsets of the H REs in the mapping group used to map the data are acquired, and the reference signal and/or the data are acquired on the first time-frequency resource.
  • the communication device in this embodiment may be a terminal, or may be a chip applied to the terminal or other combination devices or components having the above terminal functions.
  • the receiving module may be a receiver, which may include an antenna and a radio frequency circuit, etc.
  • the processing module may be one or more processors, such as a central processing unit (CPU).
  • the receiving module may be a radio frequency unit
  • the processing module may be a processor.
  • the receiving module may be an input interface of the chip system
  • the processing module may be a processor of the chip system.
  • the communication device in this embodiment can be used to execute the technical solutions corresponding to the second terminal device in the foregoing method embodiments, and its implementation principles and technical effects are similar, and will not be repeated here.
  • FIG. 13 is a schematic structural diagram of a communication device provided by another embodiment of this application.
  • the communication device may be a network device, a component of the network device, or other communication modules.
  • the communication device of this embodiment includes: a sending module 131 and a processing module 132;
  • the processing module 132 is configured to obtain first frequency domain mapping style information, where the first frequency domain mapping style includes first reference signal mapping style information and first data mapping style information, and the first reference signal mapping style information is used for Indicating a pattern of mapping reference signals in a frequency domain resource of an orthogonal frequency division multiplexing OFDM symbol, and the first data mapping pattern information is used to indicate a pattern of mapping data in a frequency domain resource of an OFDM symbol;
  • the first A reference signal mapping style information is one of at least two types of reference signal mapping style information, the first data mapping style information is one of at least two types of data mapping style information;
  • the first frequency domain mapping style information Used for the first terminal device to map reference signals and/or data to the frequency domain resource of at least one OFDM symbol in the first time-frequency resource, where the first time-frequency resource is used for the first terminal device 2.
  • the terminal device sends the reference signal and/or the data;
  • the processing module 132 is configured to send the first frequency domain mapping pattern information to the first terminal device and/or the second terminal device.
  • the reference signal is an automatic gain control AGC reference signal, or the reference signal is a demodulation reference signal DMRS.
  • every N consecutive resource particle REs in a frequency domain resource of an OFDM symbol are a mapping group, and the N REs in the mapping group include M REs for mapping reference signals , M ⁇ N, the N is a positive integer, and the M is an integer;
  • the first reference signal mapping pattern information includes information indicating that N consecutive REs belong to a mapping group; or,
  • the first reference signal mapping pattern information includes information indicating that there is no RE for mapping the reference signal in the frequency domain resource of one OFDM symbol; or,
  • the first reference signal mapping pattern information includes information indicating that REs used for mapping reference signals exist in the frequency domain resources of one OFDM symbol; or,
  • the first reference signal mapping pattern information includes information indicating that there are M REs used for mapping the reference signal among the consecutive N REs.
  • every N consecutive resource particles RE in the frequency domain resource of an OFDM symbol is a mapping group, and the N is a positive integer;
  • the first frequency domain mapping pattern information includes a first preselected frequency domain offset; wherein, the first RE or the last RE in the mapping group is a reference RE, and the M for mapping reference signals in the mapping group
  • the RE with the least interval between the RE and the reference RE is the start RE
  • the first preselected frequency domain offset is the frequency domain offset between the start RE and the reference RE, so Said M is a positive integer, M ⁇ N.
  • every N consecutive resource particles RE in the frequency domain resource of an OFDM symbol is a mapping group, and the N is a positive integer; the first frequency domain mapping pattern information does not include the first frequency domain mapping pattern information.
  • a preselected frequency domain offset, the first preselected frequency domain offset is the frequency domain offset between the start RE and the reference RE, and the first RE or the last RE in the mapping group is the reference RE Among the M REs used for mapping reference signals in the mapping group, the RE with the least interval between the RE and the reference RE is the start RE, the M is a positive integer, and M ⁇ N; the processing module 132 , Is also used to obtain the first preselected frequency domain offset.
  • every N consecutive resource particles RE in the frequency domain resource of an OFDM symbol is a mapping group, and the N is a positive integer;
  • the first frequency domain mapping pattern information includes the first Frequency domain offset parameter set;
  • the sum of the first parameter included in the first frequency domain offset parameter set and the first preselected frequency domain offset is the first frequency domain of the first RE among the M REs used for mapping reference signals in the mapping group Offset, the first RE is any RE of the M REs, the first parameter is a parameter corresponding to the first RE in the first frequency domain offset parameter set, and the mapping group
  • the first RE or the last RE in is a reference RE
  • the first frequency domain offset of the first RE is the frequency domain offset between the first RE and the reference RE
  • the M is a positive integer , M ⁇ N
  • the RE with the least interval between the RE and the reference RE is the start RE
  • the first preselected frequency domain offset is the start Frequency domain offset between RE and reference RE.
  • every N consecutive resource particles RE in the frequency domain resource of an OFDM symbol is a mapping group, and the N is a positive integer; the first frequency domain mapping pattern information does not include the first frequency domain mapping pattern information.
  • a frequency domain offset parameter set where the sum of the first parameter included in the first frequency domain offset parameter set and the first preselected frequency domain offset is one of the M REs used for mapping reference signals in the mapping group.
  • the first frequency domain offset of the first RE, the first RE is any RE of the M REs, and the first parameter is the first frequency domain offset parameter set and the first RE
  • the first RE or the last RE in the mapping group is a reference RE
  • the first frequency domain offset of the first RE is the frequency domain offset of the first RE relative to the reference RE Set
  • the M is an integer, and M ⁇ N;
  • the RE with the least interval between the RE and the reference RE among the REs used to map the reference signal in the mapping group is the start RE, and the first preselected frequency domain
  • the offset is the frequency domain offset between the start RE and the reference
  • every N consecutive resource particles RE in a frequency domain resource of an OFDM symbol is a mapping group, and the N is a positive integer;
  • the first frequency domain mapping pattern information includes the The mapping group is used to map the respective first frequency domain offsets of the M REs of the reference signal; wherein, the first RE or the last RE in the mapping group is the reference RE, and for the first RE of the M REs RE, the first frequency domain offset of the first RE is the frequency domain offset between the first RE and the reference RE, the M is a positive integer, and M ⁇ N.
  • every N consecutive resource particles RE in the frequency domain resource of an OFDM symbol is a mapping group, and the N is a positive integer; the first frequency domain mapping pattern information does not include all The first frequency domain offset of each of the M REs used for mapping reference signals in the mapping group, the first RE or the last RE in the mapping group is a reference RE, and for any one of the M REs
  • the first RE, the first frequency domain offset of the first RE is the frequency domain offset between the first RE and the reference RE
  • the M is a positive integer
  • M ⁇ N the processing module 132 is further configured to obtain respective first frequency domain offsets of the M REs used for mapping reference signals in the mapping group.
  • every N consecutive resource particles RE in a frequency domain resource of an OFDM symbol is a mapping group, where N is a positive integer; and the first data mapping pattern information includes: The first density of REs used to map the data in the mapping group; wherein the first density is the ratio of the number H of REs used to map the data in the mapping group to the N, where H is Integer, H ⁇ N; or,
  • First indication information where the first indication information indicates that among the frequency domain resources within the first frequency domain corresponding to one OFDM symbol, all REs other than the RE for which the reference signal is mapped are REs for mapping the data ;or,
  • the second indication information where the second indication information indicates that there is no RE used for mapping the data among the frequency domain resources in the first frequency domain corresponding to one OFDM symbol.
  • the first density is one of the following values:
  • the first frequency domain mapping pattern information includes the second frequency domain offset of each of the H REs used to map the data in the mapping group, where H is an integer, and H ⁇ N; wherein, the first RE or the last RE in the mapping group is a reference RE, and for any second RE in the H REs, the second frequency domain offset of the second RE is Frequency domain offset between the second RE and the reference RE.
  • the first frequency domain mapping pattern information does not include the second frequency domain offset of each of the H REs used for mapping the data in the mapping group, and the The first RE or the last RE is the reference RE.
  • the second frequency domain offset of the second RE is the difference between the second RE and the reference RE Frequency domain offset, where the H is an integer, H ⁇ N; the processing module 132 is further configured to obtain the second frequency domain offset of each of the H REs used for mapping the data in the mapping group.
  • the communication device in this embodiment may be a network device, or may be a chip applied to a network device or other combination devices, components, etc. having the functions of the network device described above.
  • the processing module may be one or more processors, such as a central processing unit (CPU), and the sending module may be a transmitter, which may include an antenna and a radio frequency circuit.
  • the processing module may be a processor, and the sending module may be a radio frequency unit.
  • the processing module may be a processor of the chip system, and the sending module may be an output interface of the chip system.
  • the communication device of this embodiment can be used to execute the technical solutions corresponding to the network equipment in the foregoing method embodiments, and its implementation principles and technical effects are similar, and will not be repeated here.
  • modules in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.
  • the functional modules in the embodiments of the present application may be integrated into one processing module, or each module may exist alone physically, or two or more modules may be integrated into one module.
  • the above-mentioned integrated modules can be implemented in the form of hardware or software functional modules.
  • the integrated module is implemented in the form of a software function module and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of this application essentially or the part that contributes to the existing technology or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , Including a number of instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) execute all or part of the steps of the method described in each embodiment of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .
  • FIG. 14 is a schematic structural diagram of a communication device provided by another embodiment of this application.
  • the communication device 500 described in this embodiment may be the first terminal device (or the component that can be used for the first terminal device) or the second terminal device (or the second terminal device that can be used for the 2. Components of terminal equipment) or network equipment (or components that can be used for network equipment).
  • the communication device may be used to implement the method described in the foregoing method embodiment, and for details, refer to the description in the foregoing method embodiment.
  • the communication device 500 may include one or more processors 501, and the processor 501 may also be referred to as a processing unit, which may implement certain control or processing functions.
  • the processor 501 may be a general-purpose processor or a special-purpose processor. For example, it can be a baseband processor or a central processing unit.
  • the baseband processor can be used to process the communication protocol and communication data
  • the central processor can be used to control the communication device, execute the software program, and process the data of the software program.
  • the processor 501 may also store instructions 503 or data (such as intermediate data). Wherein, the instruction 503 may be executed by the processor, so that the communication apparatus 500 executes the method corresponding to the terminal device or the second terminal device described in the foregoing method embodiment.
  • the communication device 500 may include a circuit, and the circuit may implement the sending or receiving or communication functions in the foregoing method embodiments.
  • the communication device 500 may include one or more memories 502, on which instructions 504 may be stored, and the instructions may be executed on the processor, so that the communication device 500 executes the foregoing method implementation.
  • data may also be stored in the memory.
  • the processor and memory can be provided separately or integrated together.
  • the communication device 500 may further include a transceiver 505 and/or an antenna 506.
  • the processor 501 may be referred to as a processing unit, and controls the communication device 500.
  • the transceiver 505 may be called a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., for implementing the transceiver function of the communication device.
  • the transceiver 505 may execute step S103 in the embodiment shown in FIG. 3, and the processor 501 executes step S101 or step S102 in the embodiment shown in FIG. 3; alternatively, the transceiver 505 may execute step S101 and step S103 in the embodiment shown in FIG. 3, and the processor 501 executes the step S101 shown in FIG. Step S102 in the embodiment.
  • the transceiver 505 may receive the first frequency domain mapping pattern information from the second terminal device, and the processing The device 501 executes step S104 in the embodiment shown in FIG. 3, steps S201 to S202 in the embodiment shown in FIG. 9, and steps S301 to S303 in the embodiment shown in FIG.
  • the transceiver 505 may send the first frequency domain to the first terminal device and/or the second terminal device.
  • the mapping style information is executed by the processor 501 to obtain the first frequency domain mapping style information.
  • the processor 501 and the transceiver 505 described in this application can be implemented in integrated circuit (IC), analog IC, radio frequency integrated circuit (RFIC), mixed signal IC, application specific integrated circuit (application specific integrated circuit) circuit, ASIC), printed circuit board (PCB), electronic equipment, etc.
  • the processor and transceiver can also be manufactured using various 1C process technologies, such as complementary metal oxide semiconductor (CMOS), nMetal-oxide-semiconductor (NMOS), P-type Metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (Bipolar Junction Transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.
  • CMOS complementary metal oxide semiconductor
  • NMOS nMetal-oxide-semiconductor
  • PMOS P-type Metal oxide semiconductor
  • BJT bipolar junction transistor
  • BiCMOS bipolar CMOS
  • SiGe silicon germanium
  • GaAs
  • processors mentioned in the embodiments of this application may be a central processing unit (Central Processing Unit, CPU), or other general-purpose processors, digital signal processors (Digital Signal Processors, DSPs), and application-specific integrated circuits ( Application Specific Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the memory mentioned in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • DDR SDRAM double data rate synchronous dynamic random access memory
  • Enhanced SDRAM, ESDRAM enhanced synchronous dynamic random access memory
  • Synchlink DRAM, SLDRAM synchronous connection dynamic random access memory
  • DR RAM Direct Rambus RAM
  • the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component
  • the memory storage module
  • the communication device 500 is described by taking a terminal device or a network device as an example, the scope of the communication device described in this application is not limited to the above-mentioned first terminal device or second terminal device, and the communication device The structure of Figure 14 is not limited.
  • the communication apparatus 500 may be a stand-alone device or may be part of a larger device.
  • the device may be:
  • the IC collection may also include storage components for storing data and/or instructions;
  • ASIC such as modem (MSM)
  • FIG. 15 is a schematic structural diagram of a terminal device provided by an embodiment of this application.
  • the terminal device may be applicable to the terminal devices described in the foregoing embodiments of this application.
  • FIG. 15 only shows the main components of the terminal device.
  • the terminal device 600 includes a processor, a memory, a control circuit, an antenna, and an input and output device.
  • the processor is mainly used to process the communication protocol and communication data, and to control the entire terminal device, execute the software program, and process the data of the software program.
  • the memory is mainly used to store software programs and data.
  • the radio frequency circuit is mainly used for the conversion of baseband signal and radio frequency signal and the processing of radio frequency signal.
  • the antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, and keyboards, are mainly used to receive data input by users and output data to users.
  • the processor can read the software program in the storage unit, interpret and execute the instructions of the software program, and process the data of the software program.
  • the processor performs baseband processing on the data to be sent and outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal out in the form of electromagnetic waves through the antenna.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data.
  • FIG. 15 only shows a memory and a processor. In actual terminal devices, there may be multiple processors and memories.
  • the memory may also be referred to as a storage medium or a storage device, etc., which is not limited in the embodiment of the present application.
  • the processor may include a baseband processor and a central processing unit.
  • the baseband processor is mainly used to process communication protocols and communication data.
  • the central processing unit is mainly used to control the entire terminal device and execute Software program, processing the data of the software program.
  • the processor in FIG. 15 integrates the functions of the baseband processor and the central processing unit.
  • the baseband processor and the central processing unit may also be independent processors and are interconnected by technologies such as buses.
  • the terminal device may include multiple baseband processors to adapt to different network standards, the terminal device may include multiple central processors to enhance its processing capabilities, and various components of the terminal device may be connected through various buses.
  • the baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip.
  • the central processing unit can also be expressed as a central processing circuit or a central processing chip.
  • the function of processing the communication protocol and communication data can be built in the processor, or can be stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.
  • the antenna and control circuit with the transceiver function can be regarded as the transceiver module 601 of the terminal device 600, and the processor with the processing function can be regarded as the processing module 602 of the terminal device 600.
  • the terminal device 600 includes a transceiver module 601 and a processing module 602.
  • the transceiver module may also be called a transceiver, transceiver, transceiver, and so on.
  • the device used to implement the receiving function in the transceiver module 601 can be regarded as the receiving module
  • the device used to implement the transmitting function in the transceiver module 601 can be regarded as the transmitting module.
  • the receiving module may also be called a receiver, receiver, receiving circuit, etc.
  • the sending module may be called a transmitter, transmitter, or transmitting circuit, etc.
  • the embodiment of the present application also provides a readable storage medium on which a computer program is stored; when the computer program is executed, the communication method corresponding to the first terminal device or the communication method corresponding to the second terminal device is implemented.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, 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

Dans des modes de réalisation, la présente invention concerne un procédé et un appareil de communication qui peuvent être appliqués à l'Internet des véhicules, tel que V2X, LTE-V et V2V, et qui comprennent les étapes suivantes : obtention de premières informations de motif de mise en correspondance de domaine fréquentiel comprenant de premières informations de motif de mise en correspondance de signal de référence et de premières informations de motif de mise en correspondance de données, les premières informations de motif de mise en correspondance de signal de référence indiquant un motif pour mettre en correspondance un signal de référence dans la ressource de domaine fréquentiel d'un symbole OFDM, et les informations de motif de mise en correspondance de données indiquant un motif pour mettre en correspondance des données dans la ressource de domaine fréquentiel d'un symbole OFDM ; et les premières informations de motif de mise en correspondance de signal de référence étant un type parmi au moins deux types d'informations de motif de mise en correspondance de signal de référence et les premières informations de motif de mise en correspondance de données étant un type parmi au moins deux types d'informations de motif de mise en correspondance de données ; mise en correspondance d'un signal de référence et/ou de données sur une première ressource temps-fréquence ; et envoi du signal de référence et/ou des données sur la première ressource temps-fréquence. Les modes de réalisation de l'invention garantissent le taux d'utilisation de ressources temps-fréquence utilisées pour la transmission de données.
PCT/CN2020/093194 2019-05-31 2020-05-29 Procédé et appareil de communication WO2020239062A1 (fr)

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