WO2020239062A1 - 通信方法和装置 - Google Patents
通信方法和装置 Download PDFInfo
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- 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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- 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) or DMT
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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
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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
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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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
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
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- 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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Abstract
本申请实施例提供一种通信方法和装置,可以应用于车联网,例如V2X、LTE-V、V2V等,包括:获取包括第一参考信号映射样式信息和第一数据映射样式信息的第一频域映射样式信息,第一参考信号映射样式信息指示在一个OFDM符号的频域资源中映射参考信号的样式,第一数据映射样式信息指示在一个OFDM符号的频域资源中映射数据的样式;第一参考信号映射样式信息为至少两种参考信号映射样式信息中的一种,第一数据映射样式信息为至少两种数据映射样式信息中的一种;根据第一频域映射样式信息,在第一时频资源上映射参考信号和/或数据;在第一时频资源上发送参考信号和/或数据。本申请实施例保证了用于数据传输的时频资源的利用率。
Description
本申请要求于2019年5月31日提交中国专利局、申请号为2019104684578、申请名称为“通信方法和装置”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
本申请实施例涉及通信技术领域,尤其涉及一种通信方法和装置。
车联万物(vehicle to everything,V2X)技术是基于蜂窝通信技术演进形成的车用无线通信技术,其应用场景具有信号动态范围大、通信延迟大、信道变化速度快等特征。
为了能够达到更高的可靠性和更低的通信时延,新无线技术(new radio,简称NR)-V2X通信系统中用于数据传输的时频资源的种类相对于长期演进(long term evolution,简称LTE)-V2X中时频资源的种类更加丰富,比如LTE-V2X通信系统中包括子载波间隔(sub-carrier spacing,简称SCS)为15kHz、30kHz、60kHz等的时频资源。基于此,如何保证NR-V2X对应的各种时频资源在用于参数信号和/或数据传输时的利用率是亟待解决的问题。
发明内容
本申请提供一种通信方法和装置,保证了用于数据传输的时频资源的利用率。
本申请提供一种通信方法,应用于第一终端设备,包括:获取第一频域映射样式信息,所述第一频域映射样式包括第一参考信号映射样式信息和第一数据映射样式信息,所述第一参考信号映射样式信息用于指示在一个正交频分复用OFDM符号的频域资源中映射参考信号的样式,所述第一数据映射样式信息用于指示在一个OFDM符号的频域资源中映射数据的样式;所述第一参考信号映射样式信息为至少两种参考信号映射样式信息中的一种,所述第一数据映射样式信息为至少两种数据映射样式信息中的一种;根据所述第一频域映射样式信息,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据;在所述第一时频资源上向第二终端设备发送所述参考信号和/或所述数据。可选地,所述参考信号为自动增益控制AGC参考信号,或者所述参考信号为解调参考信号DMRS。
本方案中,由于频域映射样式信息包括参考信号样式信息和数据映射样式信息,且存在至少两种参考信号样式信息和至少两种数据映射样式信息,因此,一个OFDM符号对应多种频域映射样式信息。这样,第一终端设备可以灵活的根据当前数据传输所对应的SCS(即时域资源种类)等当前数据传输特征,从多种频域映射样式信息中 选取一个与当前数据传输特征匹配的频域映射样式信息;其中,与当前数据传输特征匹配的频域映射样式信息是指:根据该频域映射样式信息在一个OFDM符号的频域资源中映射参考信号和/或数据时,能够在保证当前数据传输性能的基础上,同时保证用于当前数据传输的时频资源的利用率。因此,本实施例的方法可以保证用于当前数据传输的时频资源的利用率。
其中,第一终端设备获取第一频域映射样式信息的方式包括但不限于如下的两种实施方式:
第一种实施方式:所获取第一频域映射样式信息,包括:从网络设备接收所述第一频域映射样式信息。
本实施方式适用于第一终端设备处于蜂窝通信网络覆盖范围内的场景,第一终端设备的功耗低。
第二种实施方式:所述获取第一频域映射样式信息,包括:从所述至少两种参考信号映射样式信息中确定所述第一参考信号映射样式信息,所述至少两种参考信号映射样式信息是预定义的,或者是高层信令配置的;从所述至少两种数据映射样式信息中确定第一数据映射样式信息,所述至少两种数据映射样式信息是预定义的,或者是高层信令配置的。
本实施方式适用于第一终端设备未处于蜂窝通信网络覆盖范围内的场景。
结合第一方面,在第一方面的一种可能的实现方式中,所述方法还包括:向所述第二终端设备发送所述第一频域映射样式信息。
本方案可以使得第二终端设备获知第一终端设备映射参考信号和数据的频域映射样式信息,从而使得第二终端设备可以正确的接收第一终端设备发送的参考信号和/或数据。
结合第一方面,在第一方面的一种可能的实现方式中,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述映射组的N个RE中包括M个用于映射参考信号的RE,M≤N,所述N为正整数,所述M为整数;所述第一参考信号映射样式信息包括指示连续的N个RE为一个映射组的信息;或者,所述第一参考信号映射样式信息包括指示一个OFDM符号的频域资源中不存在用于映射参考信号的RE的信息;或者,所述第一参考信号映射样式信息包括指示一个OFDM符号的频域资源中存在用于映射参考信号的RE的信息;或者,所述第一参考信号映射样式信息包括指示连续的N个RE中存在M个用于映射参考信号的RE的信息。
本方案提供了第一参考信号映射样式信息的几种形式。
结合第一方面,在第一方面的一种可能的实现方式中,所述N为如下中的任意一个:1、2、3、4、6、12;所述M为如下中的任意一个:0、1、2、3、4、6。
本方案中的N值使得第一终端设备较易实现在第一时频资源上映射参考信号和/或数据。
结合第一方面,在第一方面的一种可能的实现方式中,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息包括第一预选频域偏置;其中,所述映射组中的第一个RE或最后一个RE为参考RE,所述映射组中用于映射参考信号的M个RE中与所述参考RE之间间隔的 RE最少的RE为起始RE,所述第一预选频域偏置为所述起始RE与所述参考RE之间的频域偏置,所述M为正整数,M≤N。
本方案中,第一频域映射样式信息包括第一预选频域偏置,可以减少信令开销。
结合第一方面,在第一方面的一种可能的实现方式中,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息不包括第一预选频域偏置,所述第一预选频域偏置为起始RE与参考RE之间的频域偏置,所述映射组中的第一个RE或最后一个RE为所述参考RE,所述映射组中用于映射参考信号的M个RE中与所述参考RE之间间隔的RE最少的RE为起始RE,所述M为正整数,M≤N;所述方法还包括:获取所述第一预选频域偏置;所述根据所述第一频域映射样式信息,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据,包括:根据所述第一频域映射样式信息和所述第一预选频域偏置,在所述第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据。
本方案中,第一频域映射样式信息不包括第一预选频域偏置,对第一终端设备和第二终端设备的内存占用少。
结合第一方面,在第一方面的一种可能的实现方式中,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息包括第一频域偏置参数集;所述第一频域偏置参数集包括的第一参数与第一预选频域偏置的和为所述映射组中用于映射参考信号的M个RE中的第一RE的第一频域偏置,所述第一RE为所述M个RE中的任一个RE,所述第一参数为所述第一频域偏置参数集中与所述第一RE对应的参数,所述映射组中的第一个RE或最后一个RE为参考RE,所述第一RE的第一频域偏置为所述第一RE所述参考RE之间的频域偏置,所述M为正整数,M≤N;所述映射组中用于映射参考信号的RE中与所述参考RE之间间隔的RE最少的RE为起始RE,所述第一预选频域偏置为所述起始RE与参考RE之间的频域偏置。
本方案中,第一频域映射样式信息包括第一频域偏置参数集,可以减少信令开销。
结合第一方面,在第一方面的一种可能的实现方式中,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息不包括第一频域偏置参数集,所述第一频域偏置参数集包括的第一参数与第一预选频域偏置的和为所述映射组中用于映射参考信号的M个RE中的第一RE的第一频域偏置,所述第一RE为所述M个RE中的任一个RE,所述第一参数为所述第一频域偏置参数集中与所述第一RE对应的参数,所述映射组中的第一个RE或最后一个RE为参考RE,所述第一RE的第一频域偏置为所述第一RE相对于所述参考RE的频域偏置,所述M为整数,M≤N;所述映射组中用于映射参考信号的RE中与所述参考RE之间间隔的RE最少的RE为起始RE,所述第一预选频域偏置为所述起始RE与参考RE之间的频域偏置;所述方法还包括:获取所述第一频域偏置参数集;所述根据所述第一频域映射样式信息,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据,包括:根据所述第一频域映射样式信息和所述第一频域偏置参数集,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号 和/或数据。
本方案中,第一频域映射样式信息不包括第一频域偏置参数集,对第一终端设备和第二终端设备的内存占用少。
结合第一方面,在第一方面的一种可能的实现方式中,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息包括所述映射组用于映射参考信号的M个RE各自的第一频域偏置;其中,所述映射组中的第一个RE或最后一个RE为参考RE,对于所述M个RE中的第一RE,所述第一RE的第一频域偏置为所述第一RE与参考RE之间的频域偏置,所述M为正整数,M≤N。
本方案中,第一频域映射样式信息包括M个RE各自的第一频域偏置,可以减少信令开销。同时,本方案还可以降低第二终端设备获取用于映射参考信号的RE的功耗。
结合第一方面,在第一方面的一种可能的实现方式中,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息不包括所述映射组中用于映射参考信号的M个RE各自的第一频域偏置,所述映射组中的第一个RE或最后一个RE为参考RE,对于所述M个RE中的任一个第一RE,所述第一RE的第一频域偏置为所述第一RE与所述参考RE之间的频域偏置,所述M为正整数,M≤N;所述方法还包括:获取所述映射组中用于映射参考信号的M个RE各自的第一频域偏置;所述根据所述第一频域映射样式信息,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据,包括:根据所述第一频域映射样式信息和所述映射组中用于映射参考信号的M个RE各自的第一频域偏置,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据。
本方案中,所述第一频域映射样式信息不包括所述映射组中用于映射参考信号的M个RE各自的第一频域偏置,对第一终端设备和第二终端设备的内存占用少。同时,本方案还可以降低第二终端设备获取用于映射参考信号的RE的功耗。
结合第一方面,在第一方面的一种可能的实现方式中,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一数据映射样式信息包括:所述映射组中用于映射所述数据的RE的第一密度;其中,所述第一密度为在所述映射组中用于映射数据的RE的数目H与所述N的比值,所述H为整数,H≤N;或者,第一指示信息,所述第一指示信息指示一个OFDM符号对应的第一频域范围内的频域资源中,除了映射所述参考信号的RE以外的RE均为用于映射所述数据的RE;或者,第二指示信息,所述第二指示信息指示一个OFDM符号对应的第一频域范围内的频域资源中,不存在用于映射所述数据的RE。
可选地,所述第一密度为如下中的一个值: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。
本方案提供了第一数据映射样式信息的几种形式。
结合第一方面,在第一方面的一种可能的实现方式中,所述第一频域映射样式信 息包括所述映射组中用于映射所述数据的H个RE各自的第二频域偏置,所述H为整数,H≤N;其中,所述映射组中的第一个RE或最后一个RE为参考RE,对于所述H个RE中的任一个第二RE,所述第二RE的第二频域偏置为所述第二RE与参考RE之间的频域偏置。
本方案中,第一频域映射样式信息包括映射组中用于映射数据的H个RE各自的第二频域偏置,可以减少信令开销。
结合第一方面,在第一方面的一种可能的实现方式中,所述第一频域映射样式信息不包括所述映射组中用于映射所述数据的H个RE各自的第二频域偏置,所述映射组中的第一个RE或最后一个RE为参考RE,对于所述H个RE中的任一个第二RE,所述第二RE的第二频域偏置为所述第二RE与参考RE之间的频域偏置,所述H为整数,H≤N;所述方法还包括:获取所述映射组中用于映射所述数据的H个RE各自的第二频域偏置;所述根据所述第一频域映射样式信息,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据,包括:根据所述第一频域映射样式信息和映射组中用于映射所述数据的H个RE各自的第二频域偏置,在所述第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据。
本方案中,第一频域映射样式信息不包括映射组中用于映射数据的H个RE各自的第二频域偏置,对第一终端设备和第二终端设备的内存占用少。
第二方面,本申请实施例提供一种通信方法,应用于第二终端设备,包括:从第一终端设备或网络设备接收第一频域映射样式信息,所述第一频域映射样式包括第一参考信号映射样式信息和第一数据映射样式信息,所述第一参考信号映射样式信息用于指示在一个正交频分复用OFDM符号的频域资源中映射参考信号的样式,所述第一数据映射样式信息用于指示在一个OFDM符号的频域资源中映射数据的样式;所述第一参考信号映射样式信息为至少两种参考信号映射样式信息中的一种,所述第一数据映射样式信息为至少两种数据映射样式信息中的一种;所述第一频域映射样式信息用于所述第一终端设备在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据;根据所述第一频域样式信息,在所述第一时频资源上获取所述参考信号和/或所述数据。
本方案中,第二终端设备从第一终端设备或网络设备接收第一频域映射样式信息,使得第二终端设备可以正确的接收第一终端设备发送的参考信号和/或数据。
结合第二方面,在第二方面的一种可能的实现方式中,所述参考信号为自动增益控制AGC参考信号,或者所述参考信号为解调参考信号DMRS。
结合第二方面,在第二方面的一种可能的实现方式中,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述映射组的N个RE中包括M个用于映射参考信号的RE,M≤N,所述N为正整数,所述M为整数;所述第一参考信号映射样式信息包括指示连续的N个RE为一个映射组的信息;或者,所述第一参考信号映射样式信息包括指示一个OFDM符号的频域资源中不存在用于映射参考信号的RE的信息;或者,所述第一参考信号映射样式信息包括指示一个OFDM符号的频域资源中存在用于映射参考信号的RE的信息;或者,所述第一参考信号映射样式信息包括指示连续的N个RE中存在M个用于映射参考信号的RE的信息。
结合第二方面,在第二方面的一种可能的实现方式中,所述N为如下中的任意一个:1、2、3、4、6、12;所述M为如下中的任意一个:0、1、2、3、4、6。
结合第二方面,在第二方面的一种可能的实现方式中,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息包括第一预选频域偏置;其中,所述映射组中的第一个RE或最后一个RE为参考RE,所述映射组中用于映射参考信号的M个RE中与所述参考RE之间间隔的RE最少的RE为起始RE,所述第一预选频域偏置为所述起始RE与所述参考RE之间的频域偏置,所述M为正整数,M≤N。
结合第二方面,在第二方面的一种可能的实现方式中,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息不包括第一预选频域偏置,所述第一预选频域偏置为起始RE与参考RE之间的频域偏置,所述映射组中的第一个RE或最后一个RE为所述参考RE,所述映射组中用于映射参考信号的M个RE中与所述参考RE之间间隔的RE最少的RE为起始RE,所述M为正整数,M≤N;所述方法还包括:获取所述第一预选频域偏置;所述方法还包括:获取所述第一预选频域偏置;所述根据所述第一频域映射样式信息,在所述第一时频资源上获取所述参考信号和/或所述数据,包括:根据所述第一频域映射样式信息和所述第一预选频域偏置,在所述第一时频资源上获取所述参考信号和/或所述数据。
结合第二方面,在第二方面的一种可能的实现方式中,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息包括第一频域偏置参数集;所述第一频域偏置参数集包括的第一参数与第一预选频域偏置的和为所述映射组中用于映射参考信号的M个RE中的第一RE的第一频域偏置,所述第一RE为所述M个RE中的任一个RE,所述第一参数为所述第一频域偏置参数集中与所述第一RE对应的参数,所述映射组中的第一个RE或最后一个RE为参考RE,所述第一RE的第一频域偏置为所述第一RE所述参考RE之间的频域偏置,所述M为正整数,M≤N;所述映射组中用于映射参考信号的RE中与所述参考RE之间间隔的RE最少的RE为起始RE,所述第一预选频域偏置为所述起始RE与参考RE之间的频域偏置。
结合第二方面,在第二方面的一种可能的实现方式中,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息不包括第一频域偏置参数集,所述第一频域偏置参数集包括的第一参数与第一预选频域偏置的和为所述映射组中用于映射参考信号的M个RE中的第一RE的第一频域偏置,所述第一RE为所述M个RE中的任一个RE,所述第一参数为所述第一频域偏置参数集中与所述第一RE对应的参数,所述映射组中的第一个RE或最后一个RE为参考RE,所述第一RE的第一频域偏置为所述第一RE相对于所述参考RE的频域偏置,所述M为整数,M≤N;所述映射组中用于映射参考信号的RE中与所述参考RE之间间隔的RE最少的RE为起始RE,所述第一预选频域偏置为所述起始RE与参考RE之间的频域偏置;所述方法还包括:获取所述第一频域偏置参数集;所述方法还包括:获取所述第一频域偏置参数集;所述根据所述第一频域映射样式信息, 在所述第一时频资源上获取所述参考信号和/或所述数据,包括:根据所述第一频域映射样式信息和所述第一频域偏置参数集,在所述第一时频资源上获取所述参考信号和/或所述数据。
结合第二方面,在第二方面的一种可能的实现方式中,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息包括所述映射组用于映射参考信号的M个RE各自的第一频域偏置;其中,所述映射组中的第一个RE或最后一个RE为参考RE,对于所述M个RE中的第一RE,所述第一RE的第一频域偏置为所述第一RE与参考RE之间的频域偏置,所述M为正整数,M≤N。
结合第二方面,在第二方面的一种可能的实现方式中,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息不包括所述映射组中用于映射参考信号的M个RE各自的第一频域偏置,所述映射组中的第一个RE或最后一个RE为参考RE,对于所述M个RE中的任一个第一RE,所述第一RE的第一频域偏置为所述第一RE与所述参考RE之间的频域偏置,所述M为正整数,M≤N;所述方法还包括:获取所述映射组中用于映射参考信号的M个RE各自的第一频域偏置;所述方法还包括:获取所述所述映射组中用于映射参考信号的M个RE各自的第一频域偏置;所述根据所述第一频域映射样式信息,在所述第一时频资源上获取所述参考信号和/或所述数据,包括:根据所述第一频域映射样式信息和所述映射组中用于映射参考信号的M个RE各自的第一频域偏置,在所述第一时频资源上获取所述参考信号和/或所述数据。
结合第二方面,在第二方面的一种可能的实现方式中,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一数据映射样式信息包括:所述映射组中用于映射所述数据的RE的第一密度;其中,所述第一密度为在所述映射组中用于映射数据的RE的数目H与所述N的比值,所述H为整数,H≤N;或者,第一指示信息,所述第一指示信息指示一个OFDM符号对应的第一频域范围内的频域资源中,除了映射所述参考信号的RE以外的RE均为用于映射所述数据的RE;或者,第二指示信息,所述第二指示信息指示一个OFDM符号对应的第一频域范围内的频域资源中,不存在用于映射所述数据的RE。
结合第二方面,在第二方面的一种可能的实现方式中,所述第一密度为如下中的一个值: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。
结合第二方面,在第二方面的一种可能的实现方式中,所述第一频域映射样式信息包括所述映射组中用于映射所述数据的H个RE各自的第二频域偏置,所述H为整数,H≤N;其中,所述映射组中的第一个RE或最后一个RE为参考RE,对于所述H个RE中的任一个第二RE,所述第二RE的第二频域偏置为所述第二RE与参考RE之间的频域偏置。
结合第二方面,在第二方面的一种可能的实现方式中,所述第一频域映射样式信息不包括所述映射组中用于映射所述数据的H个RE各自的第二频域偏置,所述映射组中的第一个RE或最后一个RE为参考RE,对于所述H个RE中的任一个第二RE, 所述第二RE的第二频域偏置为所述第二RE与参考RE之间的频域偏置,所述H为整数,H≤N;所述方法还包括:获取所述映射组中用于映射所述数据的H个RE各自的第二频域偏置;所述根据所述第一频域映射样式信息,在所述第一时频资源上获取所述参考信号和/或所述数据,包括:根据所述第一频域映射样式信息和映射组中用于映射所述数据的H个RE各自的第二频域偏置,在所述第一时频资源上获取所述参考信号和/或所述数据。
第三方面,本申请实施例提供一种通信方法,应用于网络设备,包括:获取第一频域映射样式信息,所述第一频域映射样式包括第一参考信号映射样式信息和第一数据映射样式信息,所述第一参考信号映射样式信息用于指示在一个正交频分复用OFDM符号的频域资源中映射参考信号的样式,所述第一数据映射样式信息用于指示在一个OFDM符号的频域资源中映射数据的样式;所述第一参考信号映射样式信息为至少两种参考信号映射样式信息中的一种,所述第一数据映射样式信息为至少两种数据映射样式信息中的一种;所述第一频域映射样式信息用于第一终端设备在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据,其中,所述第一时频资源用于所述第一终端设备向第二终端设备发送所述参考信号和/或所述数据;向所述第一终端设备和/或所述第二终端设备发送所述第一频域映射样式信息。
本方案中,由于频域映射样式信息包括参考信号样式信息和数据映射样式信息,且存在至少两种参考信号样式信息和至少两种数据映射样式信息,因此,一个OFDM符号对应多种频域映射样式信息。这样,网络设备可以灵活的根据当前数据传输所对应的SCS(即时域资源种类)等当前数据传输特征,从多种频域映射样式信息中选取一个与当前数据传输特征匹配的频域映射样式信息;其中,与当前数据传输特征匹配的频域映射样式信息是指:根据该频域映射样式信息在一个OFDM符号的频域资源中映射参考信号和/或数据时,能够在保证当前数据传输性能的基础上,同时保证用于当前数据传输的时频资源的利用率。因此,本实施例的方法可以保证用于当前数据传输的时频资源的利用率。
结合第三方面,在第三方面的一种可能的实现方式中,所述获取第一频域映射样式信息,包括:从所述至少两种参考信号映射样式信息中确定所述第一参考信号映射样式信息,所述至少两种参考信号映射样式信息是预定义的;从所述至少两种数据映射样式信息中确定第一数据映射样式信息,所述至少两种数据映射样式信息是预定义的。
结合第三方面,在第三方面的一种可能的实现方式中,所述参考信号为自动增益控制AGC参考信号,或者所述参考信号为解调参考信号DMRS。
结合第三方面,在第三方面的一种可能的实现方式中,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述映射组的N个RE中包括M个用于映射参考信号的RE,M≤N,所述N为正整数,所述M为整数;所述第一参考信号映射样式信息包括指示连续的N个RE为一个映射组的信息;或者,所述第一参考信号映射样式信息包括指示一个OFDM符号的频域资源中不存在用于映射参考信号的RE的信息;或者,所述第一参考信号映射样式信息包括指示一个OFDM符号的频域资源中存在用于映射参考信号的RE的信息;或者,所述第一参考信号映射样式信 息包括指示连续的N个RE中存在M个用于映射参考信号的RE的信息。
结合第三方面,在第三方面的一种可能的实现方式中,所述N为如下中的任意一个:1、2、3、4、6、12;所述M为如下中的任意一个:0、1、2、3、4、6。
结合第三方面,在第三方面的一种可能的实现方式中,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息包括第一预选频域偏置;其中,所述映射组中的第一个RE或最后一个RE为参考RE,所述映射组中用于映射参考信号的M个RE中与所述参考RE之间间隔的RE最少的RE为起始RE,所述第一预选频域偏置为所述起始RE与所述参考RE之间的频域偏置,所述M为正整数,M≤N。
结合第三方面,在第三方面的一种可能的实现方式中,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息包括第一频域偏置参数集;所述第一频域偏置参数集包括的第一参数与第一预选频域偏置的和为所述映射组中用于映射参考信号的M个RE中的第一RE的第一频域偏置,所述第一RE为所述M个RE中的任一个RE,所述第一参数为所述第一频域偏置参数集中与所述第一RE对应的参数,所述映射组中的第一个RE或最后一个RE为参考RE,所述第一RE的第一频域偏置为所述第一RE所述参考RE之间的频域偏置,所述M为正整数,M≤N;所述映射组中用于映射参考信号的RE中与所述参考RE之间间隔的RE最少的RE为起始RE,所述第一预选频域偏置为所述起始RE与参考RE之间的频域偏置。
结合第三方面,在第三方面的一种可能的实现方式中,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息包括所述映射组用于映射参考信号的M个RE各自的第一频域偏置;其中,所述映射组中的第一个RE或最后一个RE为参考RE,对于所述M个RE中的第一RE,所述第一RE的第一频域偏置为所述第一RE与参考RE之间的频域偏置,所述M为正整数,M≤N。
结合第三方面,在第三方面的一种可能的实现方式中,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一数据映射样式信息包括:所述映射组中用于映射所述数据的RE的第一密度;其中,所述第一密度为在所述映射组中用于映射数据的RE的数目H与所述N的比值,所述H为整数,H≤N;或者,第一指示信息,所述第一指示信息指示一个OFDM符号对应的第一频域范围内的频域资源中,除了映射所述参考信号的RE以外的RE均为用于映射所述数据的RE;或者,第二指示信息,所述第二指示信息指示一个OFDM符号对应的第一频域范围内的频域资源中,不存在用于映射所述数据的RE。
结合第三方面,在第三方面的一种可能的实现方式中,所述第一密度为如下中的一个值: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。
结合第三方面,在第三方面的一种可能的实现方式中,所述第一频域映射样式信息包括所述映射组中用于映射所述数据的H个RE各自的第二频域偏置,所述H为整数,H≤N;其中,所述映射组中的第一个RE或最后一个RE为参考RE,对于所述H 个RE中的任一个第二RE,所述第二RE的第二频域偏置为所述第二RE与参考RE之间的频域偏置。
第四方面提供一种通信装置,所述通信装置可以是终端设备,也可以是终端设备内的芯片。所述装置可以包括处理单元和收发单元。当所述装置是终端设备时,所述处理单元可以是处理器,所述收发单元可以是收发器;该终端设备还可以包括存储单元,该存储单元可以是存储器;该存储单元用于存储指令,该处理单元执行该存储单元所存储的指令,以使该终端设备执行上述第一方面中相应的功能。当该装置是终端设备内的芯片时,该处理单元可以是处理器,该收发单元可以是输入/输出接口、管脚或电路等;该处理单元执行存储单元所存储的指令,以使该终端设备执行上述第一方面中相应的功能,该存储单元可以是该芯片内的存储单元(例如,寄存器、缓存等),也可以是该终端设备内的位于该芯片外部的存储单元(例如,只读存储器、随机存取存储器等)。
第五方面提供一种通信装置,所述通信装置可以是网络设备,也可以是网络设备内的芯片。该装置可以包括处理单元和收发单元。当该装置是网络设备时,该处理单元可以是处理器,该收发单元可以是收发器;该网络设备还可以包括存储单元,该存储单元可以是存储器;该存储单元用于存储指令,该处理单元执行该存储单元所存储的指令,以使该网络设备执行上述第一方面中相应的功能。当该装置是网络设备内的芯片时,该处理单元可以是处理器,该收发单元可以是输入/输出接口、管脚或电路等;该处理单元执行存储单元所存储的指令,以使该网络设备执行上述第一方面中相应的功能,该存储单元可以是该芯片内的存储单元(例如,寄存器、缓存等),也可以是该网络设备内的位于该芯片外部的存储单元(例如,只读存储器、随机存取存储器等)。
第六方面提供一种通信装置,所述装置包括处理器和存储介质,所述存储介质存储有指令,所述指令被所述处理器运行时,使得所述处理器执行第一方面以及第一方面任一可能的实现方式中的方法或者使得所述处理器执行第二方面以及第二方面任一可能的实现方式中的方法或者使得所述处理器执行第三方面以及第三方面任一可能的实现方式中的方法。
第七方面提供一种可读存储介质,所述可读存储介质上存储有计算机程序;所述计算机程序被执行时,用于实现第一方面以及第一方面任一可能的实现方式中的方法或者用于实现第二方面以及第二方面任一可能的实现方式中的方法或者使得所述处理器执行第三方面以及第三方面任一可能的实现方式中的方法。
第七方面提供一种计算机程序产品,所述计算机程序产品包括:计算机程序代码,当所述计算机程序代码在通信设备上运行时,使得所述通信设备执行第一方面以及第一方面任一可能的实现方式中的方法或者使得所述通信设备执行第二方面以及第二方面任一可能的实现方式中的方法或者使得所述处理器执行第三方面以及第三方面任一可能的实现方式中的方法。
本申请中,由于频域映射样式信息包括参考信号样式信息和数据映射样式信息,且存在至少两种参考信号样式信息和至少两种数据映射样式信息,因此,一个OFDM符号对应多种频域映射样式信息。这样,需要发送数据的终端设备或网络设备可以灵活的根据当前数据传输所对应的SCS(即时域资源种类)等当前数据传输特征,从多 种频域映射样式信息中选取一个与当前数据传输特征匹配的频域映射样式信息;其中,与当前数据传输特征匹配的频域映射样式信息是指:根据该频域映射样式信息在一个OFDM符号的频域资源中映射参考信号和/或数据时,能够在保证当前数据传输性能的基础上,同时保证用于当前数据传输的时频资源的利用率。因此,本申请可以保证用于当前数据传输的时频资源的利用率。
图1为LTE-V2X通信系统中,在一个子帧中映射DMRS的时域格式示意图;
图2为本申请实施例提供的通信系统的示意图;
图3为本申请实施例提供的信令交互图一;
图4为本申请实施例提供的映射组的示意图;
图5为本申请实施例提供的频域映射样式的示意图一;
图6为本申请实施例提供的频域映射样式的示意图二;
图7为本申请实施例提供的频域映射样式的示意图三;
图8为本申请实施例提供的频域映射样式的示意图四;
图9为本申请实施例提供的通信方法的流程图一;
图10为本申请实施例提供的通信方法的流程图二;
图11为本申请一实施例提供的一种通信装置的结构示意图;
图12为本申请又一实施例提供的一种通信装置的结构示意图;
图13为本申请又一实施例提供的一种通信装置的结构示意图;
图14为本申请又一实施例提供的一种通信装置的结构示意图;
图15为本申请一实施例提供的一种终端设备的结构示意图。
为了更好的理解本申请,首先对V2X通信系统中的现有技术进行说明。
在LTE-V2X通信系统中,SCS为固定的15kHz。为了能够达到更高的可靠性和更低的通信时延,NR-V2X通信系统需要支持多种SCS:15kHz、30kHz、60kHz等。
AGC符号:V2X作为一种无线通信系统,为了使终端设备能够适应较大的功率动态范围,终端设备需要采用自动增益(automatic gain control,简称AGC)控制技术,将接收到信号的强度调整到适合后续处理的范围内。其中,一个时隙或子帧中用于AGC的OFDM符号一般为该子帧或该时隙的第一个符号,本申请实施例中将用于AGC的OFDM符号称为AGC符号。
不同的SCS下,OFDM符号的长度不相同。比如,在LTE-V2X通信系统中,SCS为15KHz,循环前缀(cyclic prefix,简称CP)类型为正常CP(Normal CP)时,时隙的长度为1000微秒(us),OFDM符号的有效长度为66.67us。在SCS为60KHz时,CP类型为正常CP(Normal CP)时,时隙的长度为250微秒(us),OFDM符号的有效长度为16.67us。
若终端设备进行AGC所需的时长为15us,而在SCS为15KHz时,AGC符号的有效长度为66.67us,因此,AGC所需的时长远远小于AGC符号的长度。由于终端设 备在进行AGC时会使得数据信号的相位发生突变,若此时发送端在AGC符号上发送了一段数据信号,则该段数据信号由于AGC的影响,将不能用于解调和译码,因此,AGC符号时段(持续一个AGC符号的长度的一段时间)上的大部分时间被浪费,即AGC符号利用率低。
若终端设备进行AGC所需的时长为15us,在SCS为60KHz时,AGC符号的有效长度为16.67us,此时,AGC符号利用率高。
也就是说,需要根据时域资源种类(比如SCS)等当前数据传输特征调整信号在AGC符号上的映射方式,以实现在保证数据传输性能的基础上,同时保证AGC符号利用率(保证AGC符号利用率在一定程度上可以保证用于数据传输的时频资源的利用率)的目的。当前数据传输特征还可包括:数据特征(数据对传输可靠性的要求)和/或信道特征(比如信道变化速度)等。
DMRS符号:在LTE-V2X通信系统中,固定采用15kHz的SCS。下面以LTE-V2X通信系统的物理侧行链路共享信道(physical sidelink shared channel,简称PSSCH)/物理侧行链路控制信道(physical sidelink control channel,简称PSCCH)为例说明在LTE-V2X通信系统中,在子帧中映射DMRS的时域格式。图1为LTE-V2X通信系统中,在一个子帧中映射DMRS的时域格式示意图。参见图1,符号2、5、8、11为用于映射DMRS的符号,该子帧的其它符号用于映射侧行链路数据。其中,本实施中将能够映射DMRS的符号称为DMRS符号,图1中的符号2、5、8、11均为DMRS符号。
若DMRS在DMRS符号的频域资源中的映射方式单一,则会使得在一些数据传输过程中,用于数据传输的时频资源的利用率较低。因此,需要根据用于当前数据传输的时频资源对应的时域资源种类(比如SCS)等当前数据传输特征,来调整信号在DMRS符号的频域资源中的映射方式,以实现在保证数据传输性能的基础上,同时保证用于数据传输的时频资源的利用率的目的。
为了实现上述目的,提出了本申请实施例中的方法。
图2为本申请实施例提供的通信系统的示意图,如图2所示,通信系统包括网络设备和多个终端设备。本申请实施例的技术方案可以应用于各种通信系统,例如:长期演进(long term evolution,LTE)系统、LTE频分双工(frequency division duplex,FDD)系统、LTE时分双工(time division duplex,TDD)、全球互联微波接入(worldwide interoperability for microwave access,WiMAX)通信系统、未来的第五代(5th generation,5G)系统或新无线(new radio,NR)等。
其中,本实施例的终端设备可为V2X通信系统中的终端设备,网络设备可为蜂窝移动网络中的网络设备。
终端设备可以指用户设备(user equipment,UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。第一终端设备还可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol,SIP)电话、无线本地环路(wireless local loop,WLL)站、个人数字助理(personal digital assistant,PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备,未来5G 网络中的终端设备或者未来演进的公用陆地移动通信网络(public land mobile network,PLMN)中的终端设备等,本申请实施例对此并不限定。本申请的终端设备还可以是作为一个或多个部件或者单元而内置于车辆的车载模块、车载模组、车载部件、车载芯片或者车载单元,车辆通过内置的所述车载模块、车载模组、车载部件、车载芯片或者车载单元可以实施本申请的方法。
网络设备可以是用于给终端设备提供无线通信服务的设备,该网络设备可以是宽带码分多址(wideband code division multiple access,WCDMA)系统中的基站(NodeB,NB),还可以是LTE系统中的演进型基站(evolved NodeB,eNB或eNodeB),还可以是云无线接入网络(cloud radio access network,CRAN)场景下的无线控制器,或者该网络设备可以为中继站、接入点、车载设备、可穿戴设备以及未来5G网络中的网络设备或者未来演进的PLMN网络中的网络设备等,本申请实施例并不限定。
下面在上述通信系统的基础上,结合具体的实施例对本申请的通信方法进行说明。
图3为本申请实施例提供的信令交互图一,参见图3,本实施例的方法包括:
步骤S101、第一终端设备获取第一频域映射样式信息,第一频域映射样式信息包括第一参考信号映射样式信息和第一数据映射样式信息,第一参考信号映射样式信息用于指示在一个OFDM符号的频域资源中映射参考信号的样式,第一数据映射样式信息用于指示在一个OFDM符号的频域资源中映射数据的样式;第一参考信号映射样式信息为至少两种参考信号映射样式信息中的一种,第一数据映射样式信息为至少两种数据映射样式信息中的一种。
其中,本实施例中的一个OFDM符号可以为AGC符号或者DMRS符号,还可以为其它用于映射参考信号的符号,本实施例中并不限制。本实施例中的第一终端设备为V2X通信系统中的终端设备。
本实施例中第一频域映射样式信息为本实施例中的一个OFDM符号对应的第一频域映射样式信息。本实施例中的第一频域映射样式信息为参考信号和/或数据在该一个OFDM符号的频域资源中的映射特征,该映射特征可用于确定该一个OFDM符号的频域资源中用于映射参考信号和/或数据的资源粒子(Resource Element,简称RE)。具体地,第一参考信号映射样式信息用于指示在一个OFDM符号的频域资源中映射参考信号的样式;其中,在一个OFDM符号的频域资源中映射参考信号的样式可为在该一个OFDM符号的频域资源中映射参考信号的方式或形式或特征,比如:该一个OFDM符号的频域资源中,每6个RE存在1个用于映射参考信号的RE。第一数据映射样式信息用于指示在一个OFDM符号的频域资源中映射数据的样式;其中,在一个OFDM符号的频域资源中映射数据的样式可为在该一个OFDM符号的频域资源中映射数据的方式或形式或特征,比如:该一个OFDM符号的频域资源中用于映射数据的RE的密度为5/6。
在第一终端设备处于蜂窝通信网络覆盖范围内的场景下,第一终端设备从网络设备接收第一频域映射样式信息。在该场景下,网络设备需先获取第一频域映射样式信息,再将第一频域映射样式信息发送至第一终端设备。其中,网络设备获取第一频域映射样式信息包括:从至少两种参考信号映射样式信息中确定第一参考信号映射样式信息,至少两种参考信号映射样式信息可以是预定义的,或者可以是高层信令配置的; 从至少两种数据映射样式信息中确定第一数据映射样式信息,至少两种数据映射样式信息可以是预定义的,或者可以是高层信令配置的。具体地,网络设备在获取第一频域映射样式信息时,网络设备内可存储有至少两种参考信号样式信息和至少两种数据映射样式信息,至少两种参考信号映射样式信息可以是预先定义的,至少两种数据映射样式信息可以是预先定义的。
由于存在至少两种参考信号样式信息和至少两种数据映射样式信息,因此本实施例中的一个OFDM符号对应有多种频域映射样式信息,也就是说,本实施例中的一个OFDM符号的频域资源中映射参考信号的方式具有多种。
因此,网络设备可以根据当前SCS等当前数据传输特征从多种频域映射样式信息中确定能够在保证数据传输性能的基础上,同时保证用于数据传输的时频资源的利用率的第一频域映射样式信息。
在第一终端设备未处于蜂窝通信网络覆盖范围内的场景下,第一终端设备获取第一频域映射样式信息,包括:从至少两种参考信号映射样式信息中确定第一参考信号映射样式信息,至少两种参考信号映射样式信息可以是预定义的,或者可以是高层信令配置的;从至少两种数据映射样式信息中确定第一数据映射样式信息,至少两种数据映射样式信息可以是预定义的,或者可以是高层信令配置的。
同样地,第一终端设备在获取第一频域映射样式信息时,第一终端设备内可存储有至少两种参考信号样式信息和至少两种数据映射样式信息,至少两种参考信号映射样式信息可以是预先定义的,也可以是通过高层信令配置的,至少两种数据映射样式信息可以是预先定义的,也可以是通过高层信令配置的。
相应地,在该场景下,第一终端设备也可以根据当前SCS等当前数据传输特征从多种频域映射样式信息中确定能够在保证数据传输性能的基础上,同时保证用于数据传输的时频资源的利用率的第一频域映射样式信息。
步骤S102、第一终端设备根据第一频域映射样式信息,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据。其中,第一时频资源用于发送参考信号和/或数据。
为了后续表述的清楚,将本实施例中对应第一频域映射样式信息的一个OFDM符号称为第一OFDM符号。可以理解的是,第一时频资源中的至少一个OFDM符号包括第一OFDM符号。
在获取到第一频域映射样式信息后,第一终端设备根据第一频域映射样式信息,在第一OFDM符号对应的第一频域范围内的频域资源中映射参考信号和/或数据,在至少一个OFDM符号中除了第一OFDM符号以外的第二OFDM符号上,按照第二OFDM符号的频域映射样式信息在第二OFDM符号对应的第一频域范围内的频域资源中映射参考信号和/或数据。其中,第一频域范围为第一时频资源所对应的频域范围,第一OFDM符号对应的第一频域范围内的频域资源是指第一OFDM符号所对应的频域资源中位于第一频域范围内的频域资源。
在第一时频资源的至少一个OFDM符号中可存在第一类型的第二OFDM符号,第一类型的第二OFDM符号的频域映射样式信息只有一种且是是预先定义好的,比如第一类型的第二OFDM符号的频域映射样式信息为:第二OFDM符号对应的第一频 域范围内的频域资源全部用于映射数据。
在至少一个OFDM符号中还可存在第二类型的第二OFDM符号,第二类型的第二OFDM符号的频域映射样式信息具有至少两种,根据当前确定的第二类型的第二OFDM符号的频域映射样式信息,在第二类型的第二OFDM符号对应的第一频域范围内的频域资源中映射参考信号和/或数据。
可以理解的是,在第一OFDM符号为AGC符号时,第一时频资源的至少一个OFDM符号中除了第一OFDM符号以外的第二OFDM符号中可存在DMRS符号,在第一OFDM符号为DMRS符号时,第一时频资源的至少一个OFDM符号中除了第一OFDM符号以外的第二OFDM符号中可存在AGC符号。
步骤S103、第一终端设备在第一时频资源上向第二终端设备发送参考信号和/或数据。
第一终端设备根据第一频域映射样式信息,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据后,第一终端设备在第一时频资源上发送该参考信号和/或数据。
步骤S104、第二终端设备根据第一频域映射样式信息,在第一时频资源上获取参考信号和/或数据。
具体地,本实施例中的第二终端设备可为V2X通信系统的终端。
在第二终端设备处于蜂窝通信网络的覆盖范围内的场景下,第二终端设备可从网络设备接收第一频域映射样式信息,或者,第二终端设备可从第一终端设备设备接收第一频域映射样式信息。可以理解的是,在第二终端设备从第一终端设备设备接收第一频域映射样式信息的情况下,第一终端设备也是从网络设备接收第一频域映射样式信息的。
在第二终端设备未处于蜂窝通信网络的覆盖范围内的场景下,第二终端设备从第一终端设备接收第一频域映射样式信息。
第二终端设备可根据第一频域映射样式信息,确定第一OFDM符号对应的第一频域范围内的频域资源中映射有参考信号的RE和/或映射有数据的RE,从该映射有参考信号的RE上获取参考信号和/或从该映射有数据的RE上获取数据。对于第二OFDM符号,第二终端设备还可从第二OFDM符号对应的第一频域范围内的频域资源中获取数据和/或参考信号。
本实施例中,由于频域映射样式信息包括参考信号样式信息和数据映射样式信息,且存在至少两种参考信号样式信息和至少两种数据映射样式信息,因此,一个OFDM符号对应多种频域映射样式信息。这样,网络设备或第一终端设备可以灵活的根据当前数据传输所对应的SCS(即时域资源种类)等当前数据传输特征,从多种频域映射样式信息中选取一个与当前数据传输特征匹配的频域映射样式信息;其中,与当前数据传输特征匹配的频域映射样式信息是指:根据该频域映射样式信息在一个OFDM符号的频域资源中映射参考信号和/或数据时,能够在保证当前数据传输性能的基础上,同时保证用于当前数据传输的时频资源的利用率。因此,本实施例的方法可以保证用于当前数据传输的时频资源的利用率。
下面采用具体的实施例对上一实施例中的第一频域样式信息的各种形式进行说明。
第一频域映射样式信息的第一种形式:第一频域映射样式信息包括第一参考信号映射样式信息和第一数据映射样式信息,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信号时,第一频域映射样式信息还可包括用于确定用于映射参考信号的RE的第一预选频域偏置和第一频域偏置参数集,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射数据时,第一频域映射样式信息还可包括用于映射数据的RE的第二频域偏置。本实施例中第一频域范围的含义同上一实施例中第一频域范围的含义,此处不再赘述。
下面对第一参考信号映射样式信息、第一数据映射样式信息、第一预选频域偏置、第一频域偏置参数集和用于映射数据的RE的第二频域偏置进行详细说明。
本实施例中,在一个OFDM符号对应的第一频域范围内的频域资源中,每连续的N个RE为一个映射组,在每个映射组上映射参考信号和/或数据的样式相同。
一种方式中,对于第一参考信号映射样式信息:第一参考信号映射样式信息包括指示一个OFDM符号的频域资源中不存在用于映射参考信号的RE的信息;或者,第一参考信号映射样式信息包括指示连续的N个RE为一个映射组的信息;或者,第一参考信号映射样式信息包括指示一个OFDM符号的频域资源中存在用于映射参考信号的RE的信息;或者,第一参考信号映射样式信息包括指示连续的N个RE中存在M个用于映射参考信号的RE的信息,其中,M≤N,M为整数,即每个映射组中包括M个用于映射参考信号的RE。
另一种方式中,对于第一参考信号映射样式信息:第一参考信号映射样式信息用于指示一个OFDM符号的频域资源中不存在用于映射参考信号的RE;或者,第一参考信号映射样式信息用于指示连续的N个RE为一个映射组;或者,第一参考信号映射样式信息用于指示一个OFDM符号的频域资源中存在用于映射参考信号的RE;或者,第一参考信号映射样式信息用于指示连续的N个RE中存在M个用于映射参考信号的RE,其中,M≤N,即每个映射组中包括M个用于映射参考信号的RE。
可以理解的是,在一个OFDM符号对应的第一频域范围内的频域资源中不存在用于映射参考信号的RE时,第一参考信号映射样式信息包括指示在一个OFDM符号的频域资源中不存在用于映射参考信号的RE的信息,比如该信息为“0”;或者,第一参考信号映射样式信息包括指示N个RE中存在M个用于映射参考信号的RE的信息,此时M为0。在一个OFDM符号对应的第一频域范围内的频域资源中存在映射参考信号的RE时,第一参考信号映射样式信息包括指示N个RE为一个映射组的信息;或者,第一参考信号映射样式信息包括指示一个OFDM符号的频域资源中存在用于映射参考信号的RE的信息;或者,第一参考信号映射样式信息包括指示N个RE中存在M个用于映射参考信号的RE的信息,此时M不为0。
可选地,N可为如下中的任意一个:1、2、3、4、6、12。
可选地,M可为如下中的任意一个:0,1、2、3、4、6。
在一种方式中,在一个OFDM符号对应的第一频域范围内的频域资源中存在用于映射参考信号的RE的况下,当N为1时,M为1;当N为2时,M为1;当N为3时,M可为1;当N为4时,M可为1或2;当N为6时,M可为1或2或3;当N为12时,M可为1或2或3或4或6。
下面结合图4对映射组进行进一步的说明。图4为本申请实施例提供的映射组的示意图。参见图4,图4示出了当N=4时1个资源块(RB)上的映射组,每连续4个RE为一个映射组,一个RB上具有3个映射组:映射组41,映射组42和映射组43,其中,映射组41包括RE411、RE412、RE413、RE414。
对于第一预选频域偏置:映射组中的第一个RE或最后一个RE为参考RE,映射组中用于映射参考信号的M个RE中与参考RE之间间隔的RE最少的RE为起始RE,第一预选频域偏置为起始RE与参考RE之间的频域偏置。在一种方式中,在参考RE和起始RE不同时,第一预选频域偏置可为起始RE与参考RE之间间隔的RE数加1,在起始RE和参考RE相同时,第一预选频域偏置可为0。可以理解的是,在第一频域映射样式信息包括第一预选频域偏置时,M为小于或等于N的正整数,即映射组存在用于映射参考信号的RE。
一个映射组包括的N个RE中的各RE对应的子载波的频率是不相同的,若映射组中的第一个RE为该N个RE中对应最小频率的子载波的RE,则映射组中的最后一个RE为该N个RE中对应最大频率的子载波的RE;若映射组中的第一个RE为该N个RE中对应频率最大的子载波的RE,则映射组中的最后一个RE为该N个RE中对应频率最小的子载波的RE。
继续参见图4,若映射组41中RE411为映射组41中的第一个RE,则RE414为映射组41中的最后一个RE。若映射组41中RE414可为映射组41中的第一个RE,则RE411为映射组41中的最后一个RE。
在RE411为映射组41中的第一个RE,RE414为映射组41中的最后一个RE的情况下,若RE411为参考RE,RE411和RE412用于映射参考信号,则RE411与参考RE—RE411之间间隔的RE最少的RE,那么RE411为起始RE,起始RE和参考RE相同,此时第一预选频域偏置为0。反过来说,若第一预选频域偏置为0,在则RE411为参考RE的情况下,则起始RE与参考RE相同,均为RE411,RE411为其中一个用于映射参考信号的RE。
在RE411为映射组41中的第一个RE,RE414为映射组41中的最后一个RE的情况下,若RE414为参考RE,RE411和RE412用于映射参考信号,则RE412为与参考RE—RE414之间间隔的RE最少的RE,即RE412与RE414之间间隔1个RE,那么RE412为起始RE,起始RE和参考RE之间间隔1个RE,此时第一预选频域偏置为1+1=2。反过来说,若第一预选频域偏置为2,在则RE414为参考RE的情况下,起始RE为RE412。
对于第一频域偏置参数集:第一频域偏置参数集包括的第一参数与第一预选频域偏置的和为映射组中用于映射参考信号的M个RE中的第一RE的第一频域偏置,第一RE为该M个RE中的任一个RE,第一参数为第一频域偏置参数集中与第一RE对应的参数,映射组中的第一个RE或最后一个RE为参考RE,第一RE的第一频域偏置为第一RE与参考RE之间的频域偏置。在一种方式中,若第一RE与参考RE相同,第一RE的第一频域偏置为0,若第一RE与参考RE不同,第一RE的第一频域偏置为第一RE与参考RE之间间隔的RE数加1。可以理解的是,第一频域偏置参数集中包括的参数的数目与映射组中用于映射参考信号的RE的数目M相同,第一频域偏置 参数集中包括的M个参数和映射组中用于映射参考信号的M个RE一一对应。
第一频域偏置参数集可为如下频域参数集中的一个:(0),(0,1),(0,1,2),(0,1,2,3),(0,1,2,3,4,5)。其中,在N=1时,第一频域偏置参数集为(0);在N=2时,第一频域偏置参数集可为(0);在N=3时,第一频域偏置参数集可为(0)。在N=4时,第一频域偏置参数集可为(0)或(0,1);在N=6时,第一频域偏置参数集可为(0)或(0,1)或(0,1,2)。在N=6时,第一频域偏置参数集可为(0)或(0,1)或(0,1,2)或(0,1,2,3)或(0,1,2,3,4,5)。可以理解的是,频域参数集并不限于如上列出的5个,本实施例并不限制频域偏置参数集的具体形式。
示例性地,继续参见图4,若第一预选频域偏置为0,第一频域偏置参数集为(0,1),则映射组41中具有2个RE用于映射参考信号。根据第一频域偏置参数集为(0,1),可得到2个第一频域偏置:一个第一频域偏置为第一频域偏置参数集中的参数0与第一预选频域偏置0之和0,另一个为第一频域偏置为第一频域偏置参数集中的参数1与第一预选频域偏置0之和1,即若参考RE为RE 411,则第一频域偏置为0的RE411和第一频域偏置为1的RE412为用于映射参考信号的2个RE。其中,RE411与第一频域偏置参数集中的参数0对应,RE412与第一频域偏置参数集中的参数1对应。
如上,对第一参考信号映射样式信息、第一预选频域偏置和第一频域偏置参数集进行了说明,可知,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信号时,映射组中包括的RE的数目N(可由第一参考信号映射样式信息或后续讲述的第一数据映射样式信息得到)、第一预选频域偏置和第一频域偏置参数集共同决定了映射组中用于映射参考信号的RE。因此,第一终端设备和第二终端设备可根据映射组中包括的RE的数目N、第一预选频域偏置和第一频域偏置参数集确定在一个OFDM符号对应的第一频域范围内的频域资源中用于映射参考信号的RE,具体可通过如下公式确定:
K
R1=N*n+k′+Δ
R1 公式一。
其中,K
R1为一个OFDM符号对应的第一频域范围内的频域资源中用于映射参考信号的RE的索引或编号,k′为第一频域偏置参数集中的参数,Δ
R1为第一预选频域偏置,n为自然数,n依次取0、1、2……。可以理解的是,在n的取值确定后,需要将第一频域偏置参数集中的每个参数k′均带入公式一中的计算后,再更新n的值。
相应地,第二终端设备在获取到第一频域映射样式信息后,在一个OFDM符号对应的第一频域范围内的频域资源中映射有参考信号时,可根据第一频域映射样式信息中包括的第一参考信号映射样式信息或第一数据映射样式确定映射组包括的RE的数目N,根据映射组中包括的RE的数目N、第一频域偏置参数集和第一预选频域偏置确定一个OFDM符号对应的第一频域范围内的频域资源中映射有参考信号的RE;或者,可根据第一频域映射样式信息中包括的第一参考信号映射样式信息(包括能够指示N=1的信息时)确定一个OFDM符号对应的第一频域范围内的频域资源中映射有参考信号的RE。
对于第一数据映射样式信息:第一数据映射样式信息包括映射组中用于映射数据的RE的第一密度,第一密度为映射组中用于映射数据的RE的数目H与N的比值,H为整数,H≤N;或者,第一数据映射样式信息包括第一指示信息,第一指示信息指 示一个OFDM符号对应的第一频域范围内的频域资源中,除了用于映射参考信号的RE以外的RE为用于映射数据的RE;或者,第一数据映射样式信息包括第二指示信息,第二指示信息指示一个OFDM符号对应的第一频域范围内的频域资源中,不存在用于映射数据的RE。其中,第一数据映射样式信息包括第一指示信息相对于第一数据映射样式包括第一密度,可以降低信令的开销。
其中,第一密度可为如下中的任意一个: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。可选地,第一密度的分母可与一个映射组中包括的RE的数目N相同,即在第一密度不为0的情况下,可通过第一密度的分母指示一个映射组中包括的RE的数目N,第一密度的分子指示在映射组上用于映射数据的RE的数目H。
可选地,在第一数据映射样式信息包括映射组中用于映射数据的RE的第一密度且第一密度不为0也不为1时,第一参考信号映射样式信息可为如上的任一种。在第一数据映射样式信息包括映射组中用于映射数据的RE的第一密度且第一密度为1时,第一参考信号映射样式信息可为第一参考信号映射样式信息可包括指示N个RE中存在M个用于映射参考信号的RE的信息,此时M等于0,或者,第一参考信号映射样式信息可包括指示一个OFDM符号的频域资源中不存在用于映射参考信号的RE。
可选地,在第一密度为0或者第一数据映射样式信息包括第一指示信息或者第一数据映射样式信息包括第二指示信息的情况下,若一个OFDM符号对应的第一频域范围内的频域资源中存在用于映射参考信号的RE,第一参考信号映射样式信息可包括指示N个RE为一个映射组的信息,或者,第一参考信号映射样式信息可包括指示N个RE中存在M个用于映射参考信号的RE的信息,此时M不为0。
可选地,在第一数据映射样式信息包括第一指示信息的情况下,若一个OFDM符号对应的第一频域范围内的频域资源中不存在用于映射参考信号的RE,第一参考信号映射样式信息可包括指示N个RE中存在M个用于映射参考信号的RE的信息,此时M等于0。
下面对第一密度与N之间的关系进行说明。
在一个OFDM符号对应的第一频域范围内的频域资源中不存在用于映射参考信号的RE时,在N=1时,第一密度为1;在N=2时,第一密度可为1/2;在N=3时,第一密度可为1/3或2/3;在N=4时,第一密度可为1/2或2/4或3/4;在N=6时,第一密度可为5/6或4/6或3/6/或2/6或1/6;在N=12时,第一密度可为1/12或2/12或3/12或4/12或5/12或6/12或7/12或8/12或9/12或10/12或11/12。
在一个OFDM符号对应的第一频域范围内的频域资源中存在用于映射参考信号的RE时,在N=1时,第一密度为0;在N=2时,第一密度可为0或1/2;在N=3时,第一密度可为0或1/3或2/3;在N=4时,第一密度可为0或1/2或2/4或3/4;在N=6时,第一密度可为0或5/6或4/6或3/6/或2/6或1/6;在N=12时,第一密度可为0或1/12或2/12或3/12或4/12或5/12或6/12或7/12或8/12或9/12或10/12或11/12。
对于映射组中用于映射数据的RE的第二频域偏置:映射组中的第一个RE或最后一个RE为参考RE,对于映射组中用于映射数据的H个RE中的任一个第二RE,第二RE的第二频域偏置为第二RE与参考RE之间的频域偏置。在一种方式中,若第二 RE与参考RE相同,则第二RE的第二频域偏置为0,若第二RE与参考RE不同,第二RE的第二频域偏置为第二RE与参考RE之间间隔的RE数加1。其中,第二RE为映射组中用于映射数据的H个RE中的任一个RE。此处的参考RE的含义与前述的参考RE的含义相同,此处的一个映射组中的第一个RE的含义与前述的一个映射组中的第一个RE的含义相同,此处的一个映射组中的最后一个RE的含义与前述的一个映射组中的最后一个RE的含义相同。
可以理解的是,第二频域偏置的数量与映射组中用于映射数据的RE的数量H相同。第二频域偏置取值范围在0~N-1之间,包括0和N-1。也就是说,第一频域映射样式信息中可包括映射组中用于映射数据的H个RE各自的第二频域偏置。
示例性地,继续参见图4,若映射组41中的一个RE411为参考RE,第一密度为2/4,存在2个第二频域偏置:2、3,则RE413和RE414为映射组41中用于映射数据的RE。
如上,对第一数据映射样式信息和第二频域偏置进行了说明,可知在一个OFDM符号对应的第一频域范围内的频域资源中存在用于映射数据的RE时(此时第一数据映射样式信息包括第一指示信息或包括映射组中用于映射数据的RE第一密度且第一密度不为0),映射组中包括的RE的数目N(可根据第一参考信号映射样式信息或第一数据映射样式信息得到)和第二频域偏置共同决定了一个映射组中用于映射数据的RE。其中,在第一数据映射样式信息包括第一指示信息时,第一数据映射样式信息和用于映射参考信号的RE也可决定一个映射组中映射参考信号的RE。因此,第一终端设备和第二终端设备可根据映射组中包括的RE的数目N和第二频域偏置确定一个OFDM符号对应的第一频域范围内的频域资源中用于映射数据的RE,具体可通过如下公式二确定:
K
D=N*n+Δ
D 公式二。
其中,K
D为一个OFDM符号对应的第一频域范围内的频域资源中映射数据的RE的索引或编号,Δ
D为第二频域偏置,n为自然数,n依次取0、1、2……。可以理解的是,在n的取值确定后,需要将各第二频域偏置均带入公式二中计算完毕后,再更新n的值。
即第二终端设备在获取到第一频域映射样式信息后,在一个OFDM符号对应的第一频域范围内的频域资源中映射有数据时,可根据第一频域映射样式信息中包括的第一参考信号映射样式信息或第一数据映射样式确定映射组包括的RE的数目N,根据映射组中包括的RE的数目N和第二频域偏置确定一个OFDM符号对应的第一频域范围内的频域资源中映射有数据的RE;或者,可根据第一频域映射样式信息中包括的第一参考信号映射样式信息或第一数据映射样式确定映射组包括的RE的数目N,根据映射组中包括的RE的数目N、第一频域偏置参数集和第一预选频域偏置确定一个OFDM符号对应的第一频域范围内的频域资源中映射有参考信号的RE,根据第一数据映射样式信息和用于映射参考信号的RE确定一个OFDM符号对应的第一频域范围内的频域资源中映射有数据的RE(适用于第一数据映射样式信息包括第一指示信息的情况)。或者,可根据第一频域映射样式信息中包括的第一参考信号映射样式信息和第 一数据映射样式信息确定一个OFDM符号对应的第一频域范围内的频域资源中映射有数据的RE(适用于第一数据映射样式信息包括第一指示信息或包括的第一密度为1,第一参考信号映射样式信息包括指示一个OFDM符号对应的第一频域范围内的频域资源中不存在用于映射参考信号的RE的信息或者包括指示连续的N个RE中存在0个RE的信息的情况)。
上述对一个OFDM符号的第一频域映射样式信息的第一种形式进行了介绍。可以理解的是,第一频域映射样式信息也可以称为第一频域映射样式的信息。如图3所示的实施例中所述,一个OFDM符号对应有多种频域映射样式,第一频域映射样式为多种频域映射样式中的一种频域映射样式。在一种方式中,多种频域映射样式中的部分频域映射样式的信息可如表1中所示:
表1
可以理解的是,一个OFDM符号对应的频域映射样式并不限于表1中的34种频域映射样式,还具有多种未被列出的频域映射样式。网络设备、第一终端设备和第二终端设备中可存储有多种频域映射样式,存储方式可如表1所示,此时,一种频域映射样式包括的各项信息共同对应一个索引或编号,网络设备或第一终端设备向第二终端设备发送第一频域映射样式信息时可发送第一频域映射样式的索引或编号。
此外,网络设备、第一终端设备和第二终端设备中也可未存储有多种频域映射样式,此时,该种形式下的频域映射样式信息包括的各项信息以任意方式组合后存储在对应的列表中,或者,该种形式下的频域映射样式信息包括的各项信息独立存储在各自的列表中。
下面结合图5~图8,对频域映射样式进行进一步的说明。图5为本申请实施例提供的频域映射样式的示意图一,图6为本申请实施例提供的频域映射样式的示意图二,图7为本申请实施例提供的频域映射样式的示意图三,图8为本申请实施例提供的频域映射样式的示意图四。
参见图5,图5为表1中编号为9的频域映射样式的示意图,此时,一个映射组包括2个RE,一个映射组中包括1个用于映射参考信号的RE,映射组中剩余的1个RE既不用于映射参考信号,也不用于映射数据。相应地,在第一频域映射样式信息为编号为9的频域映射样式的信息的情况下,则第一参考信号映射样式信息可包括指示连续的2个RE为一个映射组的信息,第一数据映射样式信息可为第一密度0或第二指示信息,第一频域映射样式中的第一预选频域偏置为0,第一频域偏置参数集为(0)。 由于一个OFDM符号的频域资源中不存在用于映射数据的RE,因此,第一频域映射样式中不包括第二频域偏置。可以理解的是,此时参考RE为一个映射组中对应最小频率子载波的RE。
参见图6,图6为表1中编号为8的频域映射样式的示意图,此时,一个映射组包括2个RE,一个映射组中包括1个用于映射参考信号的RE,映射组剩余的1个RE用于映射数据。相应地,在第一频域映射样式信息为编号为8的频域映射样式的信息的情况下,第一参考信号映射样式信息可包括指示连续的2个RE为一个映射组的信息,或者,第一参考信号映射样式信息可包括指示一个OFDM符号的频域资源中存在用于映射参考信号的RE的信息,第一数据映射样式信息可为第一密度1/2或者第一指示信息,第一频域映射样式信息中的第一预选频域偏置为1,第一频域偏置参数集为(0),第一频域映射样式中的第二频域偏置为0。可以理解的是,此时参考RE为一个映射组中对应最小频率子载波的RE。
参见图7,图7为表1中编号为15的频域映射样式的示意图,此时,一个映射组包括4个RE,一个映射组中包括2个用于映射参考信号的RE,映射组中包括1个用于映射数据的RE,因此,存在1个第二频域偏置。相应地,在第一频域映射样式信息为编号为15的频域映射样式的信息的情况下,第一参考信号映射样式信息可包括指示连续的4个RE中存在2个用于映射参考信号的信息,或者,包括示连续的2个RE为一个映射组的信息,或者,包括指示一个OFDM符号的频域资源中存在用于映射参考信号的RE的信息,第一数据映射样式信息可为第一密度1/4,且第一频域映射样式信息中的第一预选频域偏置为0,第一频域偏置参数集为(0,1),第一频域映射样式中的第二频域偏置为2。可以理解的是,此时参考RE为一个映射组中对应最小频率子载波的RE。
参见图8,图8为表1中编号为14的频域映射样式的示意图,此时,一个映射组包括4个RE,一个映射组中包括2个用于映射参考信号的RE,该两个RE为连续的RE,映射组中剩余的2个RE用于映射数据,因此,存在2个第二频域偏置。相应地,在第一频域映射样式信息为编号14的频域映射样式的信息的情况下,第一参考信号映射样式信息可包括指示连续的4个RE中存在2个用于映射参考信号的信息,或者,包括示连续的2个RE为一个映射组的信息,或者,包括指示一个OFDM符号的频域资源中存在用于映射参考信号的RE的信息,第一数据映射样式信息为第一密度2/4或第一指示信息,第一频域映射样式中的第一预选频域偏置为1,第一频域偏置参数集为(0,1),2个第二频域偏置为0,3。可以理解的是,此时参考RE为一个映射组中对应最小频率子载波的RE。
第一频域映射样式信息的第二种形式:第一频域映射样式信息包括第一参考信号映射样式信息和第一数据映射样式信息,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信号时,第一频域映射样式信息还可包括第一频域偏置参数集,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射数据时,第一频域映射样式信息还可包括映射组中用于映射数据的RE的第二频域偏置。
该种形式中,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信号时,第一频域映射样式信息中不包括第一预选频域偏置。因此,在一个OFDM 符号对应的第一频域范围内的频域资源中需要映射参考信号时,第一终端设备还可获取第一预选频域偏置。
在第一终端设备获取第一预选频域偏置之前,先对第一终端设备获取第一参考信号映射样式信息的方法进行详细说明。
在第一种实施方式中,第一终端设备获取第一参考信号映射样式信息包括:第一终端设备根据当前数据传输特征从至少两种参考信号映射样式信息中确定第一参考信号映射样式信息。本实施例中的当前数据传输特征的含义与图3所示的实施例中相同。此时,第二终端设备可从第一终端设备接收第一参考信号映射样式信息。
在第二种实施方式中,第一终端设备获取第一参考信号映射样式信息包括:第一终端设备根据第一数据映射样式信息和当前数据传输特征从至少两种参考信号映射样式信息中确定第一参考信号映射样式信息。第一数据映射样式信息对应一种或多种参考信号映射样式信息,第一终端设备根据当前数据传输特征从第一数据映射样式信息对应一种或多种参考信号映射样式信息中确定第一参考信号映射样式信息。此时,第二终端设备可从第一终端设备接收第一参考信号映射样式信息。
在第三种实施方式中,第一终端设备获取第一参考信号映射样式信息包括:从网络设备接收第一参考信号映射样式信息。网络设备获取第一参考信号映射样式信息的方法同第一种实施方式或第二种实施方式中第一终端设备获取第一参考信号映射样式信息的方法。此时,第二终端设备可从第一终端设备或者网络设备接收第一参考信号映射样式信息。
接着,第一终端设备可通过如下的实施方式获取第一预选频域偏置。
在第一种实施方式中,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信号且N=1的情况下,第一终端设备获取第一预选频域偏置包括:第一终端获取0为第一预选频域偏置。此时,第二终端设备可从第一终端设备接收第一预选频域偏置。
在第二种实施方式中,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信号的情况下,第一终端设备获取第一预选频域偏置包括:第一终端获取0为第一预选频域偏置。此时,第二终端设备可从第一终端设备接收第一预选频域偏置。
在第三种实施方式中,第一终端设备获取第一预选频域偏置包括:第一终端根据N、第一频域偏置参数集和第一预设规则确定第一预选频域偏置,第一预设规则为第一预选频域偏置和第一频域偏置参数集中最大的参数的和小于或等于N-1。其中,N值可以是根据第一参考信号映射样式信息获取的,还可以是通过第一数据映射样式包括的第一密度的分母确定的。此时,第二终端设备可从第一终端设备接收第一预选频域偏置。
在第四种实施方式中,第一终端设备获取第一预选频域偏置包括:从网络设备接收第一预选频域偏置。此时,网络设备获取第一预选频域偏置的方法同第一种实施方式或第二种实施方式或第三种实施方式中第一终端设备获取第一预选频域偏置的方法。此时,第二终端设备可从第一终端设备或者网络设备接收第一预选频域偏置。
可以理解的是,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射 参考信号且N=1时,只存在M=1这一种可能,因此,在N=1时,只有第一预选频域偏置为0这一种情况,第一预选频域偏置为0可以预先约定好的。此时,第一终端设备和第二终端设备可获取约定好的第一预选频域偏置0。
可选地,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信号的情况下,在N=1时,只存在M=1这一种可能,因此,在N=1时,只有第一频域偏置参数集为(0)这一种情况,第一终端设备也可不获取第一预选频域偏置,第一频域偏置参数集包括的参数0即为第一预选频域偏置,也为用于映射参考信号的RE的第一频域偏置。
相应地,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信号时,第一终端设备根据第一频域映射样式信息在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据,可包括:第一终端设备根据第一频域映射样式信息和第一预选频域偏置,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据。
在一个OFDM符号对应的第一频域范围内的频域资源中映射有参考信号时,第二终端设备根据第一频域映射样式信息,在第一时频资源上获取参考信号和/或数据,可包括:第二终端设备根据第一频域映射样式信息和第一预选频域偏置,在第一时频资源上获取参考信号和/或数据。
可以理解的是,在第一频域映射样式信息的第二种形式下,网络设备、第一终端设备和第二终端设备中可存储有多种频域映样式信息,每种频域映样式信息对应一个索引或编号,也就是该形式下的频域映样式信息包括的各项信息共同对应一个索引或编号;此时,网络设备或第一终端设备向第二终端设备发送第一频域映射样式信息时可发送第一频域映射样式的索引或编号。
此外,网络设备、第一终端设备和第二终端设备中也可未存储有多种频域映射样式,此时,该种形式下的频域映射样式信息包括的各项信息以任意方式组合后存储在对应的列表中,或者,该种形式下的频域映射样式信息包括的各项信息独立存储在各自的列表中。
第一频域映射样式信息的第三种形式:第一频域映射样式信息包括第一参考信号映射样式信息和第一数据映射样式信息,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信号时,第一频域映射样式信息还可包括第一预选频域偏置,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射数据时,第一频域映射样式信息还可包括映射组中用于映射数据的RE的第二频域偏置。
具体地,在该形式中,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信号时,第一频域映射样式信息中不包括第一频域偏置参数集。在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信号时,第一终端设备还可获取第一频域偏置参数集。
其中,第一终端设备获取第一频域偏置参数集可通过如下但不限于如下三种实施方式来实现。
第一种实施方式,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信号且N=1时,第一终端设备获取第一频域偏置参数集包括:第一终端设备获 取多个频域参数集中的频域参数集(0)为第一频域偏置参数集。此时,第二终端设备可从第一终端设备接收第一频域偏置参数集。
第二种实施方式,第一终端设备获取第一频域偏置参数集包括:第一终端设备根据N、第一预选频域偏置、第二预设规则和当前数据传输特征从多个频域参数集中确定第一频域偏置参数集,第二预设规则为第一频域偏置参数集包括的参数的数目小于N,且第一预选频域偏置和第一频域偏置参数集中最大的参数的和小于或等于N-1。如上所述,第一频域偏置参数集包括的参数的数目与映射组中用于映射参考信号的RE的数目M相同,因此,在一种方式中,第一终端设备根据当前数据传输特征,确定N和M,再确定一个包括的参数的数目等于M且满足第一预选频域偏置和第一频域偏置参数集中最大的参数的和小于或等于N-1的第一频域偏置参数集。此时,第二终端设备可从第一终端设备接收第一频域偏置参数集。
第三种实施方式,第一终端设备获取第一频域偏置参数集包括:第一终端设备当前数据传输特征则从多个频域参数集中确定第一频域偏置参数集。如上所述,第一频域偏置参数集包括的参数的数目与映射组中用于映射参考信号的RE的数目M相同,因此,在一种方式中,第一终端设备根据当前数据传输特征,确定N和M,再确定一个包括的参数的数目等于M的第一频域偏置参数集。此时,第二终端设备可从第一终端设备接收第一频域偏置参数集。
第四种实施方式,第一终端设备获取第一频域偏置参数集包括:从网络设备接收第一频域偏置参数集。此时,网络设备获取第一频域偏置参数集的方法同第一种实施方式或第二种实施方式或第三种实施方式中第一终端设备获取第一频域偏置参数集的方法。此时,第二终端设备可从第一终端设备或网络设备接收第一频域偏置参数集。
可以理解的是,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信号的情况下,在N=1时,只存在M=1这一种可能,第一频域偏置参数集也只能为(0),因此,在N=1时,第一频域偏置参数集为(0)也可以是预先约定好的,第一终端设备和第二终端设备获取约定好的第一频域偏置参数集(0)。
可选地,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信号的情况下,在N=1时,只存在M=1这一种可能,第一频域偏置参数集也只能为(0),此时,第一终端设备可不获取第一频域偏置参数集,第一预选频域偏置即为映射组中用于映射参考信号的RE的第一频域偏置。
相应地,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信号时,第一终端设备根据第一频域映射样式信息在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据,可包括:第一终端设备根据第一频域映射样式信息和第一频域偏置参数集,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据。
在一个OFDM符号对应的第一频域范围内的频域资源中映射有参考信号时,第二终端设备根据第一频域映射样式信息,在第一时频资源上参考信号和/或数据,可包括:第二终端设备根据第一频域映射样式信息和第一频域偏置参数集,在第一时频资源上获取参考信号和/或数据。
可以理解的是,在第一频域映射样式信息的第三种形式下,网络设备、第一终端 设备和第二终端设备中可存储有多种频域映样式信息,每种频域映样式信息对应一个索引或编号,也就是该形式下的频域映样式信息包括的各项信息共同对应一个索引或编号;此时,网络设备或第一终端设备向第二终端设备发送第一频域映射样式信息时可发送第一频域映射样式的索引或编号。
此外,网络设备、第一终端设备和第二终端设备中也可未存储有多种频域映射样式,此时,该种形式下的频域映射样式信息包括的各项信息以任意方式组合后存储在对应的列表中,或者,该种形式下的频域映射样式信息包括的各项信息独立存储在各自的列表中。
第一频域映射样式信息的第四种形式:第一频域映射样式信息包括第一参考信号映射样式信息和第一数据映射样式信息,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信号时,第一频域映射样式信息还可包括第一频域偏置参数集和第一预选频域偏置。
该形式下,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射数据时,第一频域映射样式信息不包括映射组中用于映射数据的RE的第二频域偏置,第一终端设备还可获取映射组中用于映射数据的RE的第二频域偏置。
在对第一终端设备获取映射组中用于映射数据的RE的第二频域偏置的方法说明之前,先对第一终端设备获取第一数据映射样式信息的方法进行说明。第一终端设备获取第一数据映射样式信息的方法可通过如下但不限于如下两种实施方式来实现。
第一种实施方式,第一终端设备根据当前数据传输特征从至少两种数据映射样式信息中确定第一数据映射样式信息。此时,第二终端设备可从第一终端设备接收第一数据映射样式信息。
第二种实施方式,第一终端设备根据第一参考信号映射样式信息和当前数据传输特征从至少两种参考信号映射样式信息中确定第一数据映射样式信息。此时,第二终端设备可从第一终端设备接收第一数据映射样式信息。第一参考信号映射样式信息对应一种或多种数据映射样式信息,第一终端设备根据当前数据传输特征从第一参考信号映射样式信息对应一种或多种数据映射样式信息中确定第一数据映射样式信息。
第三种实施方式,第一终端设备从网络设备接收第一数据映射样式信息。此时,网络设备获取第一数据映射样式信息的方法同第一种实施方式或第二种实施方式中第一终端设备获取第一数据映射样式信息的方法。此时,第二终端设备可从第一终端设备或网络设备接收第一数据映射样式信息。
接着,第一终端设备获取映射组中用于映射数据的RE的第二频域偏置可通过如下但不限于如下六种实施方式来实现。
第一种实施方式,在一个OFDM符号对应的第一频域范围内的频域资源中不存在用于映射参考信号的RE,以及第一数据映射样式信息包括第一指示信息或者第一数据映射样式信息包括的第一密度为1时,第一终端设备获取第二频域偏置包括:第一终端设备获取0为第二频域偏置。此时,第二终端设备可从第一终端设备接收第二频域偏置。
第二种实施方式,在一个OFDM符号对应的第一频域范围内的频域资源中不存在用于映射参考信号的RE,以及第一数据映射样式信息包括的第一密度不为1也不为0 或第一数据映射样式信息包括第一指示信息,第一终端设备获取第二频域偏置包括:第一终端设备根据N、第一密度和第三预设规则确定第二频域偏置,第三预设规则为第二频域偏置在0~N-1之间。其中,第一密度与N的乘积为第一终端设备需要确定的第二频域偏置的数量H。此时,第二终端设备可从第一终端设备接收第二频域偏置。
第三种实施方式,在一个OFDM符号对应的第一频域范围内的频域资源中不存在用于映射参考信号的RE,第一数据映射样式信息包括第一密度,第一密度的分母能够表征映射组中包括的RE的数目N,以及第一密度不为1时,第一终端设备获取第二频域偏置包括:第一终端设备根据第一密度和第三预设规则确定第二频域偏置,第三预设规则为第二频域偏置在0~N-1之间。第一密度的分子为第一终端设备需要确定的第二频域偏置的数量H。此时,第二终端设备可从第一终端设备接收第二频域偏置。
第四种实施方式,在一个OFDM符号对应的第一频域范围内的频域资源中存在用于映射参考信号的RE,以及第一数据映射样式信息包括的第一密度不为1也不为0或第一数据映射样式信息包括第一指示信息时,第一终端设备获取第二频域偏置包括:第一终端设备根据N、第一频域偏置参数集、第一预选频域偏置、第一密度和第四预设规则确定第二频域偏置。第四预设规则为第二频域偏置在0~N-1之间和映射组中用于映射参考信号的RE的第一频域偏置和第二频域偏置不相同。可选地,第一终端设备根据N、第一频域偏置参数集、第一预选频域偏置、第一密度和第四预设规则确定第二频域偏置,包括:第一终端设备根据第一频域偏置参数集和第一预选频域偏置可确定映射组中用于映射参考信号的RE的第一频域偏置;第一终端设备根据N、第一频域偏置和第四预设规则确定第二频域偏置。此时,第二终端设备可从第一终端设备接收第二频域偏置。
第五种实施方式,在一个OFDM符号对应的第一频域范围内的频域资源中存在用于映射参考信号的RE,第一数据映射样式信息包括第一密度,第一密度的分母能够表征映射组中包括的RE的数目N时,第一终端设备获取第二频域偏置包括:第一终端设备根据第一频域偏置参数集、第一预选频域偏置、第一密度和第四预设规则确定第二频域偏置。第四预设规则为第二频域偏置在0~N-1之间和映射组中用于映射参考信号的RE的第一频域偏置和第二频域偏置不相同。可选地,第一终端设备根据第一频域偏置参数集、第一预选频域偏置、第一密度和第四预设规则确定第二频域偏置,包括:第一终端设备根据第一频域偏置参数集和第一预选频域偏置可确定映射组中用于映射参考信号的RE的第一频域偏置;第一终端设备根据第一终端设备根据第一密度、第一频域偏置和第四预设规则确定第二频域偏置。此时,第二终端设备可从第一终端设备接收第二频域偏置。
第六种实施方式,第一终端设备获取第二频域偏置包括:从网络设备接收第二频域偏置。网络设备获取第二频域偏置的方法同第一种实施方式中或第二种实施方式或第三种实施方式或第四种实施方式或第五种实施方式中第一终端设备获取第二频域偏置的方法。此时,第二终端设备可从第一终端设备或网络设备接收第二频域偏置。
可以理解的是,在一个OFDM符号对应的第一频域范围内的频域资源中不存在用于映射参考信号的RE,以及第一数据映射样式信息包括第一指示信息或者第一数据映射样式信息包括的第一密度为1时,第二频域偏置只能为0,因此,在N=1时,第二 频域偏置为0也可以是预先约定好的,此时,第一终端设备和第二终端设备可获取约定好的第二频域偏置0。
可选地,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射数据时,在如下的情况下,也可不获取映射组中用于映射数据的RE的第二频域偏置:(1)在第一数据映射样式信息包括第一指示信息可不获取映射组中用于映射数据的RE的第二频域偏置。(2)在第一数据映射样式信息包括的第一密度为1时,也可不获取映射组中用于映射数据的RE的第二频域偏置。(3)在第一参考信号映射样式信息指示一个映射组包括的RE的数目N=2,第一数据映射样式信息包括的第一密度为1/2情况下,一个映射组中一个RE用于映射参考信号、另一个RE用于映射数据,若能够确定映射组中用于映射参考信号的RE,则另一个RE即为用于映射数据的RE,此时,也可不获取映射组中用于映射数据的RE的第二频域偏置。
相应地,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射数据时,第一终端设备根据第一频域映射样式信息在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据,可包括:第一终端设备根据第一频域映射样式信息和第二频域偏置,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据。
在一个OFDM符号对应的第一频域范围内的频域资源中映射有数据时,第二终端设备根据第一频域映射样式信息,在第一时频资源上获取参考信号和/或数据,可包括:第二终端设备根据第一频域映射样式信息和第二频域偏置,在第一时频资源上获取参考信号和/或数据。
可以理解的是,在第一频域映射样式信息的第四种形式下,网络设备、第一终端设备和第二终端设备中可存储有多种频域映样式信息,每种频域映样式信息对应一个索引或编号,也就是该形式下的频域映样式信息包括的各项信息共同对应一个索引或编号;此时,网络设备或第一终端设备向第二终端设备发送第一频域映射样式信息时可发送第一频域映射样式的索引或编号。
此外,网络设备、第一终端设备和第二终端设备中也可未存储有多种频域映射样式,此时,该种形式下的频域映射样式信息包括的各项信息以任意方式组合后存储在对应的列表中,或者,该种形式下的频域映射样式信息包括的各项信息独立存储在各自的列表中。
第一频域映射样式信息的第五种形式:第一频域映射样式信息包括第一参考信号映射样式信息和第一数据映射样式信息,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射数据时,第一频域映射样式信息还可包括映射组中用于映射数据的RE的第二频域偏置。
该种形式中,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信号时,第一频域映射样式信息不包括第一频域偏置参数集和第一预选频域偏置。因此,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信号时,第一终端设备还可获取第一频域偏置参数集和第一预选频域偏置。其中,第一终端设备获取第一频域偏置参数集和第一预选频域偏置的方法参见如上的阐述,此处不再赘述。
可选地,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信号的情况下,在N=1时,只存在M=1这一种可能,因此,在N=1时,第一终端设备也可不获取第一频域偏置参数集,也不获取第一预选频域偏置。
相应地,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信号时,第一终端设备根据第一频域映射样式信息在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据,可包括:第一终端设备根据第一频域映射样式信息、第一频域偏置参数集和第一预选频域偏置,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据。
在一个OFDM符号对应的第一频域范围内的频域资源中映射有参考信号时,第二终端设备根据第一频域映射样式信息,在第一时频资源上获取参考信号和/或数据,可包括:第二终端设备根据第一频域映射样式信息、第一频域偏置参数集和第一预选频域偏置,在第一时频资源上获取参考信号和/或数据。
可以理解的是,在第一频域映射样式信息的第五种形式下,网络设备、第一终端设备和第二终端设备中可存储有多种频域映样式信息,每种频域映样式信息对应一个索引或编号,也就是该形式下的频域映样式信息包括的各项信息共同对应一个索引或编号;此时,网络设备或第一终端设备向第二终端设备发送第一频域映射样式信息时可发送第一频域映射样式的索引或编号。
此外,网络设备、第一终端设备和第二终端设备中也可未存储有多种频域映射样式,此时,该种形式下的频域映射样式信息包括的各项信息以任意方式组合后存储在对应的列表中,或者,该种形式下的频域映射样式信息包括的各项信息独立存储在各自的列表中。
第一频域映射样式信息的第六种形式:第一频域映射样式信息包括第一参考信号映射样式信息和第一数据映射样式信息,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信号时,第一频域映射样式信息还可包括第一预选频域偏置。
该种形式中,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信号时,第一频域映射样式信息不包括第一频域偏置参数集,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射数据时,第一频域映射样式信息不包括映射组中用于映射数据的RE的第二频域偏置。因此,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信号时,第一终端设备还可获取第一频域偏置参数集。在一个OFDM符号对应的第一频域范围内的频域资源中需要映射数据时,第一终端设备还可获取映射组中用于映射数据的RE的第二频域偏置。其中,第一终端设备还可获取第一频域偏置参数集和第二频域偏置的方法参见如上的阐述,此处不再赘述。对于可不获取第一频域偏置参数集和可不获取映射组中用于映射数据的RE的第二频域偏置的情况,参见前述方式中的阐述,此处不再赘述。
相应地,该种形式下,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信号和数据时,第一终端设备根据第一频域映射样式信息在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据,可包括:第一终端设备根据第一频域映射样式信息、第一频域偏置参数集和第二频域偏置,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据。
在一个OFDM符号对应的第一频域范围内的频域资源中映射有参考信号和数据时,第二终端设备根据第一频域映射样式信息,在第一时频资源上获取参考信号和/或数据,可包括:第二终端设备根据第一频域映射样式信息、第一频域偏置参数集和第二频域偏置,在第一时频资源上获取参考信号和/或数据。
可以理解的是,在第一频域映射样式信息的第六种形式下,网络设备、第一终端设备和第二终端设备中可存储有多种频域映样式信息,每种频域映样式信息对应一个索引或编号,也就是该形式下的频域映样式信息包括的各项信息共同对应一个索引或编号;此时,网络设备或第一终端设备向第二终端设备发送第一频域映射样式信息时可发送第一频域映射样式的索引或编号。
此外,网络设备、第一终端设备和第二终端设备中也可未存储有多种频域映射样式,此时,该种形式下的频域映射样式信息包括的各项信息以任意方式组合后存储在对应的列表中,或者,该种形式下的频域映射样式信息包括的各项信息独立存储在各自的列表中。
第一频域映射样式信息的第七种形式:第一频域映射样式信息包括第一参考信号映射样式信息和第一数据映射样式信息,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信号时,第一频域映射样式信息还可包括第一频域偏置参数集。
该种形式中,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信号时,第一频域映射样式信息不包括第一预选频域偏置,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射数据时,第一频域映射样式信息不包括映射组中用于映射数据的RE的第二频域偏置。因此,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信号时,第一终端设备还可获取第一预选频域偏置;在一个OFDM符号对应的第一频域范围内的频域资源中需要映射数据时,第一终端设备还可获取用于映射数据的RE的第二频域偏置。其中,第一终端设备获取第一预选频域偏置和映射组中用于映射数据的RE的第二频域偏置的方法参见如上的阐述,此处不再赘述。对于可不获取第一预选频域偏置和可不获取映射组中用于映射数据的RE的第二频域偏置的情况,参见前述方式中的阐述,此处不再赘述。
相应地,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信号和数据时,第一终端设备根据第一频域映射样式信息在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据,可包括:第一终端设备根据第一频域映射样式信息、第一预选频域偏置和第二频域偏置,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据。
在一个OFDM符号对应的第一频域范围内的频域资源中映射有参考信号和数据时,第二终端设备根据第一频域映射样式信息,在第一时频资源上获取参考信号和/或数据,可包括:第二终端设备根据第一频域映射样式信息、第一预选频域偏置和第二频域偏置,在第一时频资源上获取参考信号和/或数据。
可以理解的是,在第一频域映射样式信息的第七种形式下,网络设备、第一终端设备和第二终端设备中可存储有多种频域映样式信息,每种频域映样式信息对应一个索引或编号,也就是该形式下的频域映样式信息包括的各项信息共同对应一个索引或 编号;此时,网络设备或第一终端设备向第二终端设备发送第一频域映射样式信息时可发送第一频域映射样式的索引或编号。
此外,网络设备、第一终端设备和第二终端设备中也可未存储有多种频域映射样式,此时,该种形式下的频域映射样式信息包括的各项信息以任意方式组合后存储在对应的列表中,或者,该种形式下的频域映射样式信息包括的各项信息独立存储在各自的列表中。
第一频域映射样式信息的第八种形式:第一频域映射样式信息包括第一参考信号映射样式信息和第一数据映射样式信息,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信号时,第一频域映射样式信息还可包括映射组中用于映射参考信号的RE的第一频域偏置,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射数据时,第一频域映射样式信息还可包括映射组中用于映射数据的RE的第二频域偏置。
具体地,对于第一参考信号映射样式信息、第一数据映射样式信息和第二频域偏置参照上一实施例中的阐述。
对于第一频域偏置:一个映射组中用于映射参考信号的M个RE各自对应一个第一频域偏置,也就是说第一频域映射样式信息包括映射组中用于映射参考信号的M个RE各自的第一频域偏置,即第一频域偏置的数量与一个映射组中用于映射参考信号的RE的数量M相同。在映射组中的第一个RE或最后一个RE为参考RE的情况下,对于M个RE中的任一个第一RE,第一RE的第一频域偏置为第一RE与参考RE之间的频域偏置。在一种方式中,若第一RE与所述参考RE相同,则第一RE的第一频域偏置为0,若所述第一RE参考RE不同,第一RE的第一频域偏置为第一RE与参考RE之间间隔的RE数加1。可以理解的是,第一频域偏置取值范围在0~N-1之间,包括0和N-1,第一频域偏置和第二频域偏置不相同。
此处的参考RE的含义与前述的参考RE的含义相同,此处的一个映射组中的第一个RE的含义与前述的一个映射组中的第一个RE的含义相同,此处的一个映射组中的最后一个RE的含义与前述的一个映射组中的最后一个RE的含义相同。
示例性地,继续参见图4,若第一频域偏置的数目为2个:0和1,则映射组41中具有2个RE用于映射参考信号,若参考RE为RE411,则RE411的第一频域偏置为0,RE412的第一频域偏置为1,即RE411和RE412为用于映射参考信号的2个RE。
如上,对第一参考信号映射样式信息和第一频域偏置进行了说明,可知一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信号时,映射组包括的RE的数目N和第一频域偏置共同决定了映射组中用于映射参考信号的RE,映射组包括的RE的数目N可通过第一参考信号映射样式信息或第一数据映射样式信息得到。因此,第一终端设备和第二终端设备可根据映射组包括的RE的数目N和第一频域偏置确定一个OFDM符号对应的第一频域范围内的频域资源中用于映射参考信号的RE,具体可通过如下公式三确定:
K
R2=N*n+Δ
R2 公式三;
其中,K
R2为一个OFDM符号对应的第一频域范围内的频域资源中映射参考信号 的RE的索引或编号,Δ
R2为第一频域偏置,n为自然数,n依次取0、1、2……。可以理解的是,在n的取值确定后,需要将各第一频域偏置均带入公式三中计算完毕后,再更新n的值。
即第二终端设备在获取到第一频域映射样式信息后,在一个OFDM符号对应的第一频域范围内的频域资源中映射有参考信号,第二终端设备可根据第一频域映射样式信息中包括的第一参考信号映射样式信息或第一数据映射样式确定映射组包括的RE的数目N,根据映射组包括的RE的数目N和第一频域偏置确定一个OFDM符号对应的第一频域范围内的频域资源中映射有参考信号的RE;或者,第二终端设备可根据第一频域映射样式信息中包括的第一参考信号映射样式信息或第一数据映射样式确定映射组包括的RE的数目N,根据映射组包括的RE的数目N确定一个OFDM符号对应的第一频域范围内的频域资源中映射参考信号的RE(比如在N=1的情况下)。
可以理解的是,在第一频域映射样式信息的第八种形式下,网络设备、第一终端设备和第二终端设备中可存储有多种频域映样式信息,每种频域映样式信息对应一个索引或编号,也就是该形式下的频域映样式信息包括的各项信息共同对应一个索引或编号;此时,网络设备或第一终端设备向第二终端设备发送第一频域映射样式信息时可发送第一频域映射样式的索引或编号。
此外,网络设备、第一终端设备和第二终端设备中也可未存储有多种频域映射样式,此时,该种形式下的频域映射样式信息包括的各项信息以任意方式组合后存储在对应的列表中,或者,该种形式下的频域映射样式信息包括的各项信息独立存储在各自的列表中。
第一频域映射样式信息的第九种形式:第一频域映射样式信息包括第一参考信号映射样式信息和第一数据映射样式信息,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信号时,第一频域映射样式信息还可包括映射组中用于映射参考信号的RE的第一频域偏置。
在该种形式中,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射数据时,第一频域映射样式信息不包括映射组中用于映射数据的RE的第二频域偏置。因此,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射数据时,第一终端设备还可获取第二频域偏置。其中,第一终端设备获取第二频域偏置的方法参见如上的阐述,此处不再赘述。对于可不获取第二频域偏置的情况,参见前述方式中的阐述,此处不再赘述。
相应地,在第一数据映射样式信息包括第一密度且第一密度不为0时,第一终端设备根据第一频域映射样式信息在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据,可包括:第一终端设备根据第一频域映射样式信息和第二频域偏置,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据。
在一个OFDM符号对应的第一频域范围内的频域资源中映射有数据时,第二终端设备根据第一频域映射样式信息,在第一时频资源上获取参考信号和/或数据,可包括:第二终端设备根据第一频域映射样式信息和第二频域偏置,在第一时频资源上获取参考信号和/或数据。
可以理解的是,在第一频域映射样式信息的第九种形式下,网络设备、第一终端设备和第二终端设备中可存储有多种频域映样式信息,每种频域映样式信息对应一个索引或编号,也就是该形式下的频域映样式信息包括的各项信息共同对应一个索引或编号;此时,网络设备或第一终端设备向第二终端设备发送第一频域映射样式信息时可发送第一频域映射样式的索引或编号。
此外,网络设备、第一终端设备和第二终端设备中也可未存储有多种频域映射样式,此时,该种形式下的频域映射样式信息包括的各项信息以任意方式组合后存储在对应的列表中,或者,该种形式下的频域映射样式信息包括的各项信息独立存储在各自的列表中。
第一频域映射样式信息的第十种形式:第一频域映射样式信息包括第一参考信号映射样式信息和第一数据映射样式信息,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射数据时,第一频域映射样式信息还可包括映射组中用于映射数据的RE的第二频域偏置。
在该种形式中,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信号时,第一频域映射样式信息不包括映射组中用于映射参考信号的M个RE各自的第一频域偏置,因此,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信号时,第一终端设备还可获取映射组中用于映射参考信号的M个RE各自的第一频域偏置。
其中,第一终端设备获取映射组中用于映射参考信号的M个RE各自的第一频域偏置可通过如下但不限于如下两种实施方式来实现。
第一种实施方式,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信号且N=1时,第一终端设备获取0为第一频域偏置。此时,第二终端设备可从第一终端设备接收映射组中用于映射参考信号的RE的第一频域偏置。
第二种实施方式,第一终端设备根据当前数据传输特征和第五预设规则确定映射组中用于映射参考信号的M个RE各自的第一频域偏置,第五预设规则为M个RE各自的第一频域偏置均在0~N-1之间。在一种方式中,第一终端设备根据当前数据传输特征确定一个N和M,第一终端设备确定M个0~N-1之间的数值为M个第一频域偏置。此时,第二终端设备可从第一终端设备接收映射组中用于映射参考信号的RE的第一频域偏置。
第三种实施方式,第一终端设备从网络设备接收映射组中用于映射参考信号的M个RE各自的第一频域偏置,网络设备获取M个RE各自的第一频域偏置的方法同第一种实施方式或第二种实施方式中第一终端设备获取映射组中用于映射参考信号的M个RE各自的第一频域偏置的方法。此时,第二终端设备可从第一终端设备或网络设备接收映射组中用于映射参考信号的RE的第一频域偏置。
可以理解的是,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信号且N=1时,只存在M=1这一种可能,第一频域偏置也只能为0,因此,在N=1时,第一频域偏置0可以是预先约定好的。当然该种情况下,第二终端设备和第一终端设备均可获取预先约定好的第一频域偏置0。
可选地,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信 号且N=1时,只存在M=1这一种可能,因此,在N=1时,第一终端设备也可不获取第一频域偏置。
相应地,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信号时,第一终端设备根据第一频域映射样式信息在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据,可包括:第一终端设备根据第一频域映射样式信息和映射组中用于映射参考信号的M个RE各自的第一频域偏置,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据。
在一个OFDM符号对应的第一频域范围内的频域资源中映射有参考信号时,第二终端设备根据第一频域映射样式信息,在第一时频资源上获取参考信号和/或数据,可包括:第二终端设备根据第一频域映射样式信息和映射组中用于映射参考信号的M个RE各自的第一频域偏置,在第一时频资源上获取参考信号和/或数据。
可以理解的是,在第一频域映射样式信息的第十种形式下,网络设备、第一终端设备和第二终端设备中可存储有多种频域映样式信息,每种频域映样式信息对应一个索引或编号,也就是该形式下的频域映样式信息包括的各项信息共同对应一个索引或编号;此时,网络设备或第一终端设备向第二终端设备发送第一频域映射样式信息时可发送第一频域映射样式信息的索引或编号。
此外,网络设备、第一终端设备和第二终端设备中也可未存储有多种频域映射样式,此时,该种形式下的频域映射样式信息包括的各项信息以任意方式组合后存储在对应的列表中,或者,该种形式下的频域映射样式信息包括的各项信息独立存储在各自的列表中。
第十一种形式:第一频域映射样式信息包括第一参考信号映射样式信息和第一数据映射样式信息。
具体地,在该种形式中,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信号时,第一频域映射样式信息不包括第一频域偏置参数集、第一预选频域偏置和映射组中用于映射参考信号的M个RE各自的第一频域偏置。在一个OFDM符号对应的第一频域范围内的频域资源中需要映射数据时,第一频域映射样式信息不包括映射组中用于映射数据的H个RE各自的第二频域偏置。
因此,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信号时,第一终端设备还可获取第一频域偏置参数集和第一预选频域偏置,或者,第一终端设备还可获取映射组中用于映射参考信号的M个RE各自的第一频域偏置。第一终端设备获取第一频域偏置参数集和第一预选频域偏置的方法参见上述中的阐述,此处不再赘述。第一终端设备获取映射组中用于映射参考信号的M个RE各自的第一频域偏置方法参见上述中的阐述,此处不再赘述。对于可不获取第一频域偏置参数集、第一预选频域偏置和第一频域偏置的情况,参见前述方式中的阐述,此处不再赘述。
在一个OFDM符号对应的第一频域范围内的频域资源中需要映射数据时,第一终端设备还可获取映射组中用于映射数据的RE的第二频域偏置。第一终端设备获取第二频域偏置的方法参见上述中的阐述,此处不再赘述。对于可不获取第二频域偏置的情况,参见前述方式中的阐述,此处不再赘述。
相应地,在一个OFDM符号对应的第一频域范围内的频域资源中需要映射参考信 号且第一终端设备根据第一频域映射样式信息在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据,可包括:第一终端设备根据第一频域映射样式信息、第一频域偏置参数集、第一预选频域偏置和第二频域偏置,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据;或者,第一终端设备根据第一频域映射样式信息、映射组中用于映射参考信号的RE的第一频域偏置和映射组中用于映射数据的RE的第二频域偏置,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据。
在一个OFDM符号对应的第一频域范围内的频域资源中映射有参考信号且第一数据映射样式信息包括第一密度且第一密度不为0时,第二终端设备根据第一频域映射样式信息,获取在第一时频资源中的至少一个OFDM符号的频域资源中映射的参考信号和/或数据,可包括:第二终端设备根据第一频域映射样式信息、第一频域偏置参数集、第一预选频域偏置和映射组中用于映射数据的RE的第二频域偏置,在第一时频资源上获取参考信号和/或数据;或者,第二终端设备根据第一频域映射样式信息、映射组中用于映射参考信号的RE的第一频域偏置和映射组中用于映射数据的RE的第二频域偏置,在第一时频资源上获取参考信号和/或数据。
可以理解的是,在第一频域映射样式信息的第十一种形式下,网络设备、第一终端设备和第二终端设备中可存储有多种频域映样式信息,每种频域映样式信息对应一个索引或编号,也就是该形式下的频域映样式信息包括的各项信息共同对应一个索引或编号;此时,网络设备或第一终端设备向第二终端设备发送第一频域映射样式信息时可发送第一频域映射样式的索引或编号。
网络设备、第一终端设备和第二终端设备中可存储有多种频域映样式,多种频域映样式中的部分频域映样式的信息可如表2中所示。
表2
此外,网络设备、第一终端设备和第二终端设备中也可未存储有多种频域映射样式,此时,该种形式下的频域映射样式信息包括的各项信息以任意方式组合后存储在对应的列表中,或者,该种形式下的频域映射样式信息包括的各项信息独立存储在各自的列表中。
以上对第一频域映射样式信息的几种可能的实现形式进行了详细的说明。
下面采用几个具体的实施例对在参考信号为AGC参考信号,上述实施例中的一个OFDM符号为AGC符号时,第二终端设备在接收到第一频域映射样式信息后,第二终端设备执行的动作进行说明。
图9为本申请实施例提供的通信方法的流程图一,参见图9,本实施例的方法包括:
步骤S201、根据第一频域映射样式信息,确定AGC符号对应的第一频域范围内的频域资源中映射有AGC参考信号的RE的第一总数以及映射有数据的RE的第二总 数。
首先,对第一总数的获取过程进行说明:
在第一参考信号映射样式信息包括指示AGC符号对应的第一频域范围内的频域资源中不存在用于映射参考信号的RE的信息时,第二终端设备根据第一参考信号映射样式信息确定AGC符号对应的第一频域范围内的频域资源中映射有AGC参考信号的RE的第一总数为0。
在第一参考信号映射样式信息包括指示AGC符号对应的第一频域范围内的频域资源中存在用于映射参考信号的RE的信息时:在一种方式中,第二终端设备根据第一数据映射样式信息中包括的第一密度和第一频域偏置参数集中包括的参数的数量,确定AGC符号对应的第一频域范围内的频域资源中映射有AGC参考信号的RE的第一总数。例如,第一密度为3/6,说明一个映射组包括的RE的数目N=6,第一频域偏置参数集中包括的参数的数目为3,说明一个映射组映射有参考信号的RE的数目M=3,则AGC符号对应的第一频域范围内的频域资源中映射有AGC参考信号的RE的第一总数为当前数据传输在AGC符号的频域资源中所调度的RE的总数的一半。在另一种方式中,第二终端设备根据第一数据映射样式信息中包括的第一密度和映射组中用于映射参考信号的RE的第一频域偏置的数量,确定AGC符号对应的第一频域范围内的频域资源中映射有AGC参考信号的RE的第一总数。
在第一参考信号映射样式信息包括指示N个RE为一个映射组的信息时:在一种方式中,在N=1时只存在M=1这一种情况,在N=2时只存在M=1这一种情况,因此,在N=1和N=2时,第二终端设备根据第一参考信号映射样式信息即可确定AGC符号对应的第一频域范围内的频域资源中映射有AGC参考信号的RE的第一总数。具体地,在N=1时,AGC符号对应的第一频域范围内的频域资源中映射有AGC参考信号的RE的第一总数等于当前数据传输在AGC符号的频域资源中所调度的RE的总数。在N=2时,AGC符号对应的第一频域范围内的频域资源中映射有AGC参考信号的RE的第一总数等于当前数据传输在AGC符号的频域资源中所调度的RE的总数的一半。在另一种方式中,在N≥3时,第二终端设备根据第一参考信号映射样式信息和第一频域偏置参数集中包括的参数的数量,确定AGC符号对应的第一频域范围内的频域资源中映射有AGC参考信号的RE的第一总数。在又一种方式中,在N≥3时,第二终端设备根据第一参考信号映射样式信息和映射组中用于映射参考信号的RE的第一频域偏置的数量,确定AGC符号对应的第一频域范围内的频域资源中映射有AGC参考信号的RE的第一总数。例如,第一参考信号映射样式信息指示N等于4,即一个映射组中包括的RE的数目为4,存在2个第一频域偏置,则说明每个映射组中用于映射参考信号的RE的数目为2,则第二终端设备确第一总数等于当前数据传输在AGC符号的频域资源中所调度的RE的总数的一半。
在第一参考信号映射样式信息包括指示N个RE中存在M个RE用于映射参考信号时:第二终端设备根据第一参考信号映射样式信息确定AGC符号对应的第一频域范围内的频域资源中映射有AGC参考信号的RE的第一总数。
其次,对第二总数的获取过程进行说明:
在第一数据映射样式信息包括映射组中用于映射数据的RE的第一密度或第二指 示信息时,第二终端设备根据第一数据映射样式信息确定AGC符号上第一频域范围内的频域资源中映射有数据的RE的第二总数。其中,在第一密度不为0时,第二总数等于当前数据传输在AGC符号的频域资源中所调度的RE的总数乘以第一密度。在第一密度为0或第一数据映射样式信息包括第二指示信息时,第二总数为0。
在第一数据映射样式信息包括第一指示信息时,第二终端设备根据当前数据传输在AGC符号的频域资源中所调度的RE的总数和第一总数,确定第二总数。具体地,第二总数等于当前数据传输在AGC符号的频域资源中所调度的RE的总数减去第一总数。
步骤S202、根据第一总数和第二总数,进行AGC。
具体地,第二终端设备根据第一总数和第二总数的和,进行AGC。具体AGC的过程本实施例中不再赘述。
本实施例中提供了第二终端设备根据第一频域映射样式信息进行AGC的方法。
图10为本申请实施例提供的通信方法的流程图二,参见图10,本实施例的方法包括:
步骤S301、根据第一频域映射样式信息、第二终端设备进行AGC所需的时长和当前SCS,确定AGC符号时段上的第一时间段,AGC符号时段是持续一个AGC符号长度的一段时间。
具体地,第一终端设备根据第一频域映射样式信息中的第一参考信号映射样式和/或第一数据映射样式信息,将AGC符号上的信号转化成占用1个AGC符号时段的h段重复信号,h为大于等于1的自然数,并在AGC符号时段内向第二终端设备发送该h段重复信号。
同样地,第二终端设备根据第一频域映射样式信息中的第一参考信号映射样式信息和/或第一数据映射样式信息,得到h。接着,第二终端设备将不含CP的AGC符号的长度分成h份,每份为一个预选时间段的时长;然后第二终端设备根据第二终端设备进行AGC的时长,确定第二终端设备进行AGC所占用的预选时间段的数目J,
H为第二终端设备进行AGC的时长。若h大于J,第二终端设备确定剩余的h-J个预选时间段为第一时间段。
示例性地,若一个映射组包括4个RE,1个RE映射有参考信号,1个RE映射有数据,即第一参考信号映射样式信息为N=4,第一数据映射样式信息为1/4,第一频域偏置参数集中包括一个参数或具有一个第一频域偏置。此时,第一终端设备将AGC符号上的信号转化成占用1个AGC符号时段的4段(即h=4)重复信号,并在AGC符号时段内向第二终端设备发送该4段重复信号。
在SCS为30kHz,CP为正常CP时,不含CP的AGC符号的长度为33.33us,预选时间段的时长为33.33us/4=8.33us。若第二终端设备a进行AGC的时长为15us,则
即第二终端设备a进行AGC占用2个预选时间段,剩余的2个预选时间段为第二终端设备a对应的第一时间段。若第二终端设备b进行AGC的时长为20us,则
即第二终端设备b进行AGC占用了3个预选时间段和CP长度,剩余的1个预选时间段为第二终端设备b对应的第一时间段
在AGC符号对应的第一频域范围内的频域资源中映射有参考信号的情况下执行步骤S302:
步骤S302、在第一时间段从AGC符号对应的第一频域范围内的频域资源中映射有参考信号的RE上接收参考信号,以进行时频同步和信道估计。
具体地,若存在第一时间段且AGC符号对应的第一频域范围内的频域资源中映射有参考信号,则第二终端设备可根据第一参考信号映射样式信息或根据第一参考信号映射样式信息、第一频域偏置参数集以及第一预选频域偏置或根据第一参考信号映射样式信息和映射组中用于映射参考信号的RE的第一频域偏置确定AGC符号对应的第一频域范围内的频域资源中映射有参考信号的RE。
在确定了AGC符号对应的第一频域范围内的频域资源中映射有参考信号的RE之后,第二终端设备在第一时间段从AGC符号对应的第一频域范围内的频域资源中映射参考信号的RE上接收参考信号,以进行时频同步和信道估计。这可以增加第二终端设备进行时频同步和信道估计的精确度。
如步骤S301中的示例,第二终端设备a可在剩余的2个预选时间段从映射有参考信号的RE上接收参考信号。第二终端设备b可在剩余的1个预选时间段从映射有参考信号的RE上接收参考信号。
在AGC符号对应的第一频域范围内的频域资源中映射有数据的情况下执行步骤S303:
步骤S303、在第一时间段从AGC符号对应的第一频域范围内的频域资源中映射有数据的RE上接收数据,以对接收到的数据进行解调和译码。
具体地,若存在第一时间段且AGC符号对应的第一频域范围内的频域资源中映射有数据,则第二终端设备可根据第一数据映射样式信息和第二频域偏置或者根据第一数据映射样式信息确定AGC符号对应的第一频域范围内的频域资源中映射有数据的RE。
在第一数据映射样式信息包括第一指示信息的情况下,第二终端设备根据第一数据映射样式信息确定AGC符号对应的第一频域范围内的频域资源中映射有数据的RE,包括:第二终端设备根据AGC符号对应的第一频域范围内的频域资源中映射有参考信号的RE和第一指示信息,确定AGC符号对应的第一频域范围内的频域资源中映射有数据的RE。
其中,在第一频域映射样式信息不包括第二频域偏置时,且第一终端设备或网络设备获取了第二频域偏置时,第二终端设备除了从第一终端设备或网络设备接收第一频域映射样式信息,还从第一终端设备或网络设备接收第二频域偏置。
在确定了AGC符号对应的第一频域范围内的频域资源中映射有数据的RE后,第二终端设备在第一时间段从AGC符号对应的第一频域范围内的频域资源中映射有数据的RE上接收数据,并对接收到的数据进行解调和译码。
如步骤S301中的示例,第二终端设备a可在剩余的2个预选时间段从映射数据有RE上接收数据。第二终端设备b可在剩余的1个预选时间段从映射有数据RE上接收数据。
本实施例提供了若当前AGC符号的长度较长,以至于比第二终端设备进行AGC 的时长大很多,在第一终端设备或网络设备确定了与当前种类的时域资源匹配的第一频域映射样式信息的情况下,则在AGC符号上不仅可进行AGC,还可根据AGC参考信号进行时频同步和信道估计和/或接收并解调译码AGC符号上的数据的具体实现,即提高AGC符号的利用率的具体实现。
可以理解的是,上述各个实施例中,由终端设备实现的操作和步骤也可以由可用于终端设备的部件(例如芯片或者电路)实现,本申请实施例对此不作限定。由网络设备实现的操作和步骤也可以由可用于网络设备的部件(例如芯片或者电路)实现,本申请实施例对此不作限定。
以上对本申请实施例涉及的通信方法进行了说明,下面采用具体的实施例对本申请涉及的通信装置进行说明。
图11为本申请一实施例提供的一种通信装置的结构示意图,该通信装置可以是第一终端设备,也可以是第一终端设备的部件,或者可以是其他通信模块。参见图11,本实施例的通信装置,包括:接收模块111、处理模块112和发送模块113;
接收模块111或处理模块112,用于获取第一频域映射样式信息,所述第一频域映射样式包括第一参考信号映射样式信息和第一数据映射样式信息,所述第一参考信号映射样式信息用于指示在一个正交频分复用OFDM符号的频域资源中映射参考信号的样式,所述第一数据映射样式信息用于指示在一个OFDM符号的频域资源中映射数据的样式;所述第一参考信号映射样式信息为至少两种参考信号映射样式信息中的一种,所述第一数据映射样式信息为至少两种数据映射样式信息中的一种;
所述处理模块112,还用于根据所述第一频域映射样式信息,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据;
发送模块113,用于在所述第一时频资源上向第二终端设备发送所述参考信号和/或所述数据。
可选地,作为一个实施例,所述接收模块111用于获取第一频域映射样式信息,包括:所述接收模块111,具体用于从网络设备接收所述第一频域映射样式信息。
可选地,作为一个实施例,所述处理模块112用于获取第一频域映射样式信息,包括:所述处理模块112,具体用于从所述至少两种参考信号映射样式信息中确定所述第一参考信号映射样式信息,所述至少两种参考信号映射样式信息是预定义的,或者是高层信令配置的;以及,从所述至少两种数据映射样式信息中确定第一数据映射样式信息,所述至少两种数据映射样式信息是预定义的,或者是高层信令配置的。
可选地,作为一个实施例,所述发送模块113,还用于向所述第二终端设备发送所述第一频域映射样式信息。
可选地,作为一个实施例,所述参考信号为自动增益控制AGC参考信号,或者所述参考信号为解调参考信号DMRS。
可选地,作为一个实施例,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述映射组的N个RE中包括M个用于映射参考信号的RE,M≤N,所述N为正整数,所述M为整数;
所述第一参考信号映射样式信息包括指示连续的N个RE为一个映射组的信息;或者,
所述第一参考信号映射样式信息包括指示一个OFDM符号的频域资源中不存在用于映射参考信号的RE的信息;或者,
所述第一参考信号映射样式信息包括指示一个OFDM符号的频域资源中存在用于映射参考信号的RE的信息;或者,
所述第一参考信号映射样式信息包括指示连续的N个RE中存在M个用于映射参考信号的RE的信息。
可选地,作为一个实施例,所述N为如下中的任意一个:1、2、3、4、6、12;所述M为如下中的任意一个:0、1、2、3、4、6。
可选地,作为一个实施例,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;
所述第一频域映射样式信息包括第一预选频域偏置;其中,所述映射组中的第一个RE或最后一个RE为参考RE,所述映射组中用于映射参考信号的M个RE中与所述参考RE之间间隔的RE最少的RE为起始RE,所述第一预选频域偏置为所述起始RE与所述参考RE之间的频域偏置,所述M为正整数,M≤N。
可选地,作为一个实施例,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息不包括第一预选频域偏置,所述第一预选频域偏置为起始RE与参考RE之间的频域偏置,所述映射组中的第一个RE或最后一个RE为所述参考RE,所述映射组中用于映射参考信号的M个RE中与所述参考RE之间间隔的RE最少的RE为起始RE,所述M为正整数,M≤N;
所述处理模块112或所述接收模块111,还用于获取所述第一预选频域偏置;
所述处理模块112,用于根据所述第一频域映射样式信息,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据,包括:所述处理模块112,具体用于根据所述第一频域映射样式信息和所述第一预选频域偏置,在所述第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据。
可选地,作为一个实施例,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息包括第一频域偏置参数集;
所述第一频域偏置参数集包括的第一参数与第一预选频域偏置的和为所述映射组中用于映射参考信号的M个RE中的第一RE的第一频域偏置,所述第一RE为所述M个RE中的任一个RE,所述第一参数为所述第一频域偏置参数集中与所述第一RE对应的参数,所述映射组中的第一个RE或最后一个RE为参考RE,所述第一RE的第一频域偏置为所述第一RE所述参考RE之间的频域偏置,所述M为正整数,M≤N;所述映射组中用于映射参考信号的RE中与所述参考RE之间间隔的RE最少的RE为起始RE,所述第一预选频域偏置为所述起始RE与参考RE之间的频域偏置。
可选地,作为一个实施例,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息不包括第一频域偏置参数集,所述第一频域偏置参数集包括的第一参数与第一预选频域偏置的和为所述映射组中用于映射参考信号的M个RE中的第一RE的第一频域偏置,所述第一RE 为所述M个RE中的任一个RE,所述第一参数为所述第一频域偏置参数集中与所述第一RE对应的参数,所述映射组中的第一个RE或最后一个RE为参考RE,所述第一RE的第一频域偏置为所述第一RE相对于所述参考RE的频域偏置,所述M为整数,M≤N;所述映射组中用于映射参考信号的RE中与所述参考RE之间间隔的RE最少的RE为起始RE,所述第一预选频域偏置为所述起始RE与参考RE之间的频域偏置;
所述处理模块112或所述接收模块111,还用于获取所述第一频域偏置参数集;
所述处理模块112,用于根据所述第一频域映射样式信息,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据,包括:所述处理模块112,具体用于根据所述第一频域映射样式信息和所述第一频域偏置参数集,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据。
可选地,作为一个实施例,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息包括所述映射组用于映射参考信号的M个RE各自的第一频域偏置;其中,所述映射组中的第一个RE或最后一个RE为参考RE,对于所述M个RE中的第一RE,所述第一RE的第一频域偏置为所述第一RE与参考RE之间的频域偏置,所述M为正整数,M≤N。
可选地,作为一个实施例,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息不包括所述映射组中用于映射参考信号的M个RE各自的第一频域偏置,所述映射组中的第一个RE或最后一个RE为参考RE,对于所述M个RE中的任一个第一RE,所述第一RE的第一频域偏置为所述第一RE与所述参考RE之间的频域偏置,所述M为正整数,M≤N;
所述处理模块112或所述接收模块111,还用于获取所述映射组中用于映射参考信号的M个RE各自的第一频域偏置;
所述处理模块112,用于根据所述第一频域映射样式信息,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据,包括:所述处理模块112,具体用于根据所述第一频域映射样式信息和所述映射组中用于映射参考信号的M个RE各自的第一频域偏置,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据。
可选地,作为一个实施例,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一数据映射样式信息包括:所述映射组中用于映射所述数据的RE的第一密度;其中,所述第一密度为在所述映射组中用于映射数据的RE的数目H与所述N的比值,所述H为整数,H≤N;或者,
第一指示信息,所述第一指示信息指示一个OFDM符号对应的第一频域范围内的频域资源中,除了映射所述参考信号的RE以外的RE均为用于映射所述数据的RE;或者,
第二指示信息,所述第二指示信息指示一个OFDM符号对应的第一频域范围内的频域资源中,不存在用于映射所述数据的RE。
可选地,作为一个实施例,所述第一密度为如下中的一个值:
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。
可选地,作为一个实施例,所述第一频域映射样式信息包括所述映射组中用于映射所述数据的H个RE各自的第二频域偏置,所述H为整数,H≤N;其中,所述映射组中的第一个RE或最后一个RE为参考RE,对于所述H个RE中的任一个第二RE,所述第二RE的第二频域偏置为所述第二RE与参考RE之间的频域偏置。
可选地,作为一个实施例,所述第一频域映射样式信息不包括所述映射组中用于映射所述数据的H个RE各自的第二频域偏置,所述映射组中的第一个RE或最后一个RE为参考RE,对于所述H个RE中的任一个第二RE,所述第二RE的第二频域偏置为所述第二RE与参考RE之间的频域偏置,所述H为整数,H≤N;
所述处理模块112或所述接收模块111,还用于获取所述映射组中用于映射所述数据的H个RE各自的第二频域偏置;
所述处理模块112,用于根据所述第一频域映射样式信息,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据,包括:所述处理模块112,具体用于根据所述第一频域映射样式信息和映射组中用于映射所述数据的H个RE各自的第二频域偏置,在所述第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据。
需要说明的是,本实施例中的通信装置可以是终端,也可以是应用于终端中的芯片或者其他具有上述终端功能的组合器件、部件等。当通信装置是终端时接收模块可以接收器,可以包括天线和射频电路等,处理模块可以是一个或多个处理器,例如:中央处理单元(central processing unit,CPU),发送模块可以是发射器,可以包括天线和射频电路等,其中接收器和发射器可以是整合的收发器。当通信装置是具有上述终端功能的部件时,接收模块可以是射频单元,处理模块可以是处理器,发送模块可以是射频单元。当通信装置是芯片系统时,接收模块可以是芯片系统的输入接口、处理模块可以是芯片系统的处理器,发送模块可以是芯片系统的输出接口。
本实施例的通信装置,可以用于执行上述各方法实施例中第一终端设备对应的技术方案,其实现原理和技术效果类似,此处不再赘述。
图12为本申请又一实施例提供的一种通信装置的结构示意图,该通信装置可以是第二终端设备,也可以是第二终端设备的部件,或者可以是其他通信模块。参见图12,本实施例的通信装置,包括:接收模块121和处理模块122;
接收模块121,用于从第一终端设备或网络设备接收第一频域映射样式信息,所述第一频域映射样式包括第一参考信号映射样式信息和第一数据映射样式信息,所述第一参考信号映射样式信息用于指示在一个正交频分复用OFDM符号的频域资源中映射参考信号的样式,所述第一数据映射样式信息用于指示在一个OFDM符号的频域资源中映射数据的样式;所述第一参考信号映射样式信息为至少两种参考信号映射样式信息中的一种,所述第一数据映射样式信息为至少两种数据映射样式信息中的一种;所述第一频域映射样式信息用于所述第一终端设备在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据;
处理模块122,用于根据所述第一频域样式信息,在所述第一时频资源上获取所 述参考信号和/或所述数据。
可选地,作为一个实施例,所述参考信号为自动增益控制AGC参考信号,或者所述参考信号为解调参考信号DMRS。
可选地,作为一个实施例,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述映射组的N个RE中包括M个用于映射参考信号的RE,M≤N,所述N为正整数,所述M为整数;
所述第一参考信号映射样式信息包括指示连续的N个RE为一个映射组的信息;或者,
所述第一参考信号映射样式信息包括指示一个OFDM符号的频域资源中不存在用于映射参考信号的RE的信息;或者,
所述第一参考信号映射样式信息包括指示一个OFDM符号的频域资源中存在用于映射参考信号的RE的信息;或者,
所述第一参考信号映射样式信息包括指示连续的N个RE中存在M个用于映射参考信号的RE的信息。
可选地,作为一个实施例,所述N为如下中的任意一个:1、2、3、4、6、12;所述M为如下中的任意一个:0、1、2、3、4、6。
可选地,作为一个实施例,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;
所述第一频域映射样式信息包括第一预选频域偏置;其中,所述映射组中的第一个RE或最后一个RE为参考RE,所述映射组中用于映射参考信号的M个RE中与所述参考RE之间间隔的RE最少的RE为起始RE,所述第一预选频域偏置为所述起始RE与所述参考RE之间的频域偏置,所述M为正整数,M≤N。
可选地,作为一个实施例,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息不包括第一预选频域偏置,所述第一预选频域偏置为起始RE与参考RE之间的频域偏置,所述映射组中的第一个RE或最后一个RE为所述参考RE,所述映射组中用于映射参考信号的M个RE中与所述参考RE之间间隔的RE最少的RE为起始RE,所述M为正整数,M≤N;
所述接收模块121或处理模块122,还用于获取所述第一预选频域偏置;所述处理模块122,用于根据所述第一频域样式信息,在所述第一时频资源上获取所述参考信号和/或所述数据,包括:所述处理模块122,具体用于根据所述第一频域映射样式信息和所述第一预选频域偏置,在所述第一时频资源上获取所述参考信号和/或所述数据。
可选地,作为一个实施例,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息包括第一频域偏置参数集;所述第一频域偏置参数集包括的第一参数与第一预选频域偏置的和为所述映射组中用于映射参考信号的M个RE中的第一RE的第一频域偏置,所述第一RE为所述M个RE中的任一个RE,所述第一参数为所述第一频域偏置参数集中与所述第一RE对应的参数,所述映射组中的第一个RE或最后一个RE为参考RE,所述第 一RE的第一频域偏置为所述第一RE所述参考RE之间的频域偏置,所述M为正整数,M≤N;所述映射组中用于映射参考信号的RE中与所述参考RE之间间隔的RE最少的RE为起始RE,所述第一预选频域偏置为所述起始RE与参考RE之间的频域偏置。
可选地,作为一个实施例,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息不包括第一频域偏置参数集,所述第一频域偏置参数集包括的第一参数与第一预选频域偏置的和为所述映射组中用于映射参考信号的M个RE中的第一RE的第一频域偏置,所述第一RE为所述M个RE中的任一个RE,所述第一参数为所述第一频域偏置参数集中与所述第一RE对应的参数,所述映射组中的第一个RE或最后一个RE为参考RE,所述第一RE的第一频域偏置为所述第一RE相对于所述参考RE的频域偏置,所述M为整数,M≤N;所述映射组中用于映射参考信号的RE中与所述参考RE之间间隔的RE最少的RE为起始RE,所述第一预选频域偏置为所述起始RE与参考RE之间的频域偏置;
所述接收模块121或处理模块122,还用于获取所述第一频域偏置参数集;所述处理模块122,用于根据所述第一频域映射样式信息,在所述第一时频资源上获取所述参考信号和/或所述数据,包括:所述处理模块122,具体用于根据所述第一频域映射样式信息和所述第一频域偏置参数集,在所述第一时频资源上获取所述参考信号和/或所述数据。
可选地,作为一个实施例,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息包括所述映射组用于映射参考信号的M个RE各自的第一频域偏置;其中,所述映射组中的第一个RE或最后一个RE为参考RE,对于所述M个RE中的第一RE,所述第一RE的第一频域偏置为所述第一RE与参考RE之间的频域偏置,所述M为正整数,M≤N。
可选地,作为一个实施例,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息不包括所述映射组中用于映射参考信号的M个RE各自的第一频域偏置,所述映射组中的第一个RE或最后一个RE为参考RE,对于所述M个RE中的任一个第一RE,所述第一RE的第一频域偏置为所述第一RE与所述参考RE之间的频域偏置,所述M为正整数,M≤N;
所述接收模块121或处理模块122,还用于获取所述映射组中用于映射参考信号的M个RE各自的第一频域偏置;所述处理模块122,用于根据所述第一频域映射样式信息,在所述第一时频资源上获取所述参考信号和/或所述数据,包括:所述处理模块122,具体用于根据所述第一频域映射样式信息和所述映射组中用于映射参考信号的M个RE各自的第一频域偏置,在所述第一时频资源上获取所述参考信号和/或所述数据。
可选地,作为一个实施例,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一数据映射样式信息包括:所述映射组中用于映射所述数据的RE的第一密度;其中,所述第一密度为在所述映射组中用 于映射数据的RE的数目H与所述N的比值,所述H为整数,H≤N;或者,
第一指示信息,所述第一指示信息指示一个OFDM符号对应的第一频域范围内的频域资源中,除了映射所述参考信号的RE以外的RE均为用于映射所述数据的RE;或者,
第二指示信息,所述第二指示信息指示一个OFDM符号对应的第一频域范围内的频域资源中,不存在用于映射所述数据的RE。
可选地,作为一个实施例,所述第一密度为如下中的一个值:
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。
可选地,作为一个实施例,所述第一频域映射样式信息包括所述映射组中用于映射所述数据的H个RE各自的第二频域偏置,所述H为整数,H≤N;其中,所述映射组中的第一个RE或最后一个RE为参考RE,对于所述H个RE中的任一个第二RE,所述第二RE的第二频域偏置为所述第二RE与参考RE之间的频域偏置。
可选地,作为一个实施例,所述第一频域映射样式信息不包括所述映射组中用于映射所述数据的H个RE各自的第二频域偏置,所述映射组中的第一个RE或最后一个RE为参考RE,对于所述H个RE中的任一个第二RE,所述第二RE的第二频域偏置为所述第二RE与参考RE之间的频域偏置,所述H为整数,H≤N;
所述接收模块121或处理模块122,还用于获取所述映射组中用于映射所述数据的H个RE各自的第二频域偏置;所述处理模块122,用于根据所述第一频域映射样式信息,在所述第一时频资源上获取所述参考信号和/或所述数据,包括:所述处理模块122,具体用于根据所述第一频域映射样式信息和映射组中用于映射所述数据的H个RE各自的第二频域偏置,在所述第一时频资源上获取所述参考信号和/或所述数据。
需要说明的是,本实施例中的通信装置可以是终端,也可以是应用于终端中的芯片或者其他具有上述终端功能的组合器件、部件等。当通信装置是终端时接收模块可以接收器,可以包括天线和射频电路等,处理模块可以是一个或多个处理器,例如:中央处理单元(central processing unit,CPU)。当通信装置是具有上述终端功能的部件时,接收模块可以是射频单元,处理模块可以是处理器。当通信装置是芯片系统时,接收模块可以是芯片系统的输入接口、处理模块可以是芯片系统的处理器。
本实施例的通信装置,可以用于执行上述各方法实施例中第二终端设备对应的技术方案,其实现原理和技术效果类似,此处不再赘述。
图13为本申请又一实施例提供的一种通信装置的结构示意图,该通信装置可以是网络设备,也可以是网络设备的部件,或者可以是其他通信模块。参见图13,本实施例的通信装置,包括:发送模块131和处理模块132;
处理模块132,用于获取第一频域映射样式信息,所述第一频域映射样式包括第一参考信号映射样式信息和第一数据映射样式信息,所述第一参考信号映射样式信息用于指示在一个正交频分复用OFDM符号的频域资源中映射参考信号的样式,所述第一数据映射样式信息用于指示在一个OFDM符号的频域资源中映射数据的样式;所述第一参考信号映射样式信息为至少两种参考信号映射样式信息中的一种,所述第一数 据映射样式信息为至少两种数据映射样式信息中的一种;所述第一频域映射样式信息用于第一终端设备在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据,其中,所述第一时频资源用于所述第一终端设备向第二终端设备发送所述参考信号和/或所述数据;
处理模块132,用于向所述第一终端设备和/或所述第二终端设备发送所述第一频域映射样式信息。
可选地,作为一个实施例,所述参考信号为自动增益控制AGC参考信号,或者所述参考信号为解调参考信号DMRS。
可选地,作为一个实施例,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述映射组的N个RE中包括M个用于映射参考信号的RE,M≤N,所述N为正整数,所述M为整数;
所述第一参考信号映射样式信息包括指示连续的N个RE为一个映射组的信息;或者,
所述第一参考信号映射样式信息包括指示一个OFDM符号的频域资源中不存在用于映射参考信号的RE的信息;或者,
所述第一参考信号映射样式信息包括指示一个OFDM符号的频域资源中存在用于映射参考信号的RE的信息;或者,
所述第一参考信号映射样式信息包括指示连续的N个RE中存在M个用于映射参考信号的RE的信息。
可选地,作为一个实施例,所述N为如下中的任意一个:1、2、3、4、6、12;所述M为如下中的任意一个:0、1、2、3、4、6。
可选地,作为一个实施例,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;
所述第一频域映射样式信息包括第一预选频域偏置;其中,所述映射组中的第一个RE或最后一个RE为参考RE,所述映射组中用于映射参考信号的M个RE中与所述参考RE之间间隔的RE最少的RE为起始RE,所述第一预选频域偏置为所述起始RE与所述参考RE之间的频域偏置,所述M为正整数,M≤N。
可选地,作为一个实施例,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息不包括第一预选频域偏置,所述第一预选频域偏置为起始RE与参考RE之间的频域偏置,所述映射组中的第一个RE或最后一个RE为所述参考RE,所述映射组中用于映射参考信号的M个RE中与所述参考RE之间间隔的RE最少的RE为起始RE,所述M为正整数,M≤N;所述处理模块132,还用于获取所述第一预选频域偏置。
可选地,作为一个实施例,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息包括第一频域偏置参数集;
所述第一频域偏置参数集包括的第一参数与第一预选频域偏置的和为所述映射组中用于映射参考信号的M个RE中的第一RE的第一频域偏置,所述第一RE为所述M个RE中的任一个RE,所述第一参数为所述第一频域偏置参数集中与所述第一RE 对应的参数,所述映射组中的第一个RE或最后一个RE为参考RE,所述第一RE的第一频域偏置为所述第一RE所述参考RE之间的频域偏置,所述M为正整数,M≤N;所述映射组中用于映射参考信号的RE中与所述参考RE之间间隔的RE最少的RE为起始RE,所述第一预选频域偏置为所述起始RE与参考RE之间的频域偏置。
可选地,作为一个实施例,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息不包括第一频域偏置参数集,所述第一频域偏置参数集包括的第一参数与第一预选频域偏置的和为所述映射组中用于映射参考信号的M个RE中的第一RE的第一频域偏置,所述第一RE为所述M个RE中的任一个RE,所述第一参数为所述第一频域偏置参数集中与所述第一RE对应的参数,所述映射组中的第一个RE或最后一个RE为参考RE,所述第一RE的第一频域偏置为所述第一RE相对于所述参考RE的频域偏置,所述M为整数,M≤N;所述映射组中用于映射参考信号的RE中与所述参考RE之间间隔的RE最少的RE为起始RE,所述第一预选频域偏置为所述起始RE与参考RE之间的频域偏置;所述处理模块132,还用于获取所述第一频域偏置参数集。
可选地,作为一个实施例,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息包括所述映射组用于映射参考信号的M个RE各自的第一频域偏置;其中,所述映射组中的第一个RE或最后一个RE为参考RE,对于所述M个RE中的第一RE,所述第一RE的第一频域偏置为所述第一RE与参考RE之间的频域偏置,所述M为正整数,M≤N。
可选地,作为一个实施例,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息不包括所述映射组中用于映射参考信号的M个RE各自的第一频域偏置,所述映射组中的第一个RE或最后一个RE为参考RE,对于所述M个RE中的任一个第一RE,所述第一RE的第一频域偏置为所述第一RE与所述参考RE之间的频域偏置,所述M为正整数,M≤N;所述处理模块132还用于获取所述映射组中用于映射参考信号的M个RE各自的第一频域偏置。
可选地,作为一个实施例,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一数据映射样式信息包括:所述映射组中用于映射所述数据的RE的第一密度;其中,所述第一密度为在所述映射组中用于映射数据的RE的数目H与所述N的比值,所述H为整数,H≤N;或者,
第一指示信息,所述第一指示信息指示一个OFDM符号对应的第一频域范围内的频域资源中,除了映射所述参考信号的RE以外的RE均为用于映射所述数据的RE;或者,
第二指示信息,所述第二指示信息指示一个OFDM符号对应的第一频域范围内的频域资源中,不存在用于映射所述数据的RE。
可选地,作为一个实施例,所述第一密度为如下中的一个值:
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。
可选地,作为一个实施例,所述第一频域映射样式信息包括所述映射组中用于映 射所述数据的H个RE各自的第二频域偏置,所述H为整数,H≤N;其中,所述映射组中的第一个RE或最后一个RE为参考RE,对于所述H个RE中的任一个第二RE,所述第二RE的第二频域偏置为所述第二RE与参考RE之间的频域偏置。
可选地,作为一个实施例,所述第一频域映射样式信息不包括所述映射组中用于映射所述数据的H个RE各自的第二频域偏置,所述映射组中的第一个RE或最后一个RE为参考RE,对于所述H个RE中的任一个第二RE,所述第二RE的第二频域偏置为所述第二RE与参考RE之间的频域偏置,所述H为整数,H≤N;所述处理模块132,还用于获取所述映射组中用于映射所述数据的H个RE各自的第二频域偏置。
需要说明的是,本实施例中的通信装置可以是网络设备,也可以是应用于网络设备中的芯片或者其他具有上述网络设备功能的组合器件、部件等。当通信装置是网络设备时,处理模块可以是一个或多个处理器,例如:中央处理单元(central processing unit,CPU),发送模块可以是发射器,可以包括天线和射频电路等。当通信装置是具有上述网络设备功能的部件时,处理模块可以是处理器,发送模块可以是射频单元。当通信装置是芯片系统时,处理模块可以是芯片系统的处理器,发送模块可以是芯片系统的输出接口。
本实施例的通信装置,可以用于执行上述各方法实施例中网络设备对应的技术方案,其实现原理和技术效果类似,此处不再赘述。
需要说明的是,本申请实施例中对模块的划分是示意性的,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式。在本申请的实施例中的各功能模块可以集成在一个处理模块中,也可以是各个模块单独物理存在,也可以两个或两个以上模块集成在一个模块中。上述集成的模块既可以采用硬件的形式实现,也可以采用软件功能模块的形式实现。
所述集成的模块如果以软件功能模块的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)或处理器(processor)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(Read-Only Memory,ROM)、随机存取存储器(Random Access Memory,RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
图14为本申请又一实施例提供的一种通信装置的结构示意图。如图14所示,本实施例所述的通信装置500可以是前述方法实施例中提到的第一终端设备(或者可用于第一终端设备的部件)或者第二终端设备(或者可用于第二终端设备的部件)或网络设备(或者可用于网络设备的部件)。通信装置可用于实现上述方法实施例中描述的方法,具体参见上述方法实施例中的说明。
所述通信装置500可以包括一个或多个处理器501,所述处理器501也可以称为处理单元,可以实现一定的控制或者处理功能。所述处理器501可以是通用处理器或者专用处理器等。例如可以是基带处理器、或中央处理器。基带处理器可以用于对通信协议以及通信数据进行处理,中央处理器可以用于对通信装置进行控制,执行软件程序,处理软件程序的数据。
在一种可选的设计中,处理器501也可以存有指令503或者数据(例如中间数据)。其中,所述指令503可以被所述处理器运行,使得所述通信装置500执行上述方法实施例中描述的对应于终端设备或者第二终端设备的方法。
在又一种可能的设计中,通信装置500可以包括电路,所述电路可以实现前述方法实施例中发送或接收或者通信的功能。
可选的,所述通信装置500中可以包括一个或多个存储器502,其上可以存有指令504,所述指令可在所述处理器上被运行,使得所述通信装置500执行上述方法实施例中描述的方法。
可选的,所述存储器中也可以是存储有数据。所述处理器和存储器可以单独设置,也可以集成在一起。
可选的,所述通信装置500还可以包括收发器505和/或天线506。所述处理器501可以称为处理单元,对通信装置500进行控制。所述收发器505可以称为收发单元、收发机、收发电路、或者收发器等,用于实现通信装置的收发功能。
在一个设计中,若该通信装置500用于实现对应于上述各实施例中第一终端设备的操作,例如,可以由收发器505执行图3所示的实施例中的步骤S103,由处理器501执行图3所示的实施例中的步骤S101或步骤S102;或者,可以由收发器505执行图3所示的实施例中的步骤S101和步骤S103,由处理器501执行图3所示的实施例中的步骤S102。
在另一个设计中,若该通信装置500用于实现对应于上述各实施例中第二终端设备操作,例如,可以由收发器505从第二终端设备接收第一频域映射样式信息,由处理器501执行图3所示的实施例中的步骤S104、图9所示的实施例中的步骤S201~步骤S202、图10所示的实施例中的步骤S301~步骤S303。
在另一个设计中,若该通信装置500用于实现对应于上述各实施例中网络设备的操作,例如,可以由收发器505向第一终端设备和/或第二终端设备发送第一频域映射样式信息,由处理器501执行获取第一频域映射样式信息。
其中,上述收发器505与处理器501的具体实现过程可以参见上述各实施例的相关描述,此处不再赘述。
本申请中描述的处理器501和收发器505可实现在集成电路(integrated circuit,IC)、模拟IC、射频集成电路(radio frequency integrated circuit,RFIC)、混合信号IC、专用集成电路(application specific integrated circuit,ASIC)、印刷电路板(printed circuit board,PCB)、电子设备等上。该处理器和收发器也可以用各种1C工艺技术来制造,例如互补金属氧化物半导体(complementary metal oxide semiconductor,CMOS)、N型金属氧化物半导体(nMetal-oxide-semiconductor,NMOS)、P型金属氧化物半导体(positive channel metal oxide semiconductor,PMOS)、双极结型晶体管(Bipolar Junction Transistor,BJT)、双极CMOS(BiCMOS)、硅锗(SiGe)、砷化镓(GaAs)等。
应理解,本申请实施例中提及的处理器可以是中央处理单元(Central Processing Unit,CPU),还可以是其他通用处理器、数字信号处理器(Digital Signal Processor,DSP)、专用集成电路(Application Specific Integrated Circuit,ASIC)、现成可编程门阵列(Field Programmable Gate Array,FPGA)或者其他可编程逻辑器件、分立门或 者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
还应理解,本申请实施例中提及的存储器可以是易失性存储器或非易失性存储器,或可包括易失性和非易失性存储器两者。其中,非易失性存储器可以是只读存储器(Read-Only Memory,ROM)、可编程只读存储器(Programmable ROM,PROM)、可擦除可编程只读存储器(Erasable PROM,EPROM)、电可擦除可编程只读存储器(Electrically EPROM,EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory,RAM),其用作外部高速缓存。通过示例性但不是限制性说明,许多形式的RAM可用,例如静态随机存取存储器(Static RAM,SRAM)、动态随机存取存储器(Dynamic RAM,DRAM)、同步动态随机存取存储器(Synchronous DRAM,SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM,DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM,ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM,SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM,DR RAM)。
需要说明的是,当处理器为通用处理器、DSP、ASIC、FPGA或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件时,存储器(存储模块)集成在处理器中。
虽然在以上的实施例描述中,通信装置500以终端设备或者网络设备为例来描述,但本申请中描述的通信装置的范围并不限于上述第一终端设备或第二终端设备,而且通信装置的结构可以不受图14的限制。通信装置500可以是独立的设备或者可以是较大设备的一部分。例如所述设备可以是:
(1)独立的集成电路IC,或芯片,或,芯片系统或子系统;
(2)具有一个或多个IC的集合,可选的,该IC集合也可以包括用于存储数据和/或指令的存储部件;
(3)ASIC,例如调制解调器(MSM);
(4)可嵌入在其他设备内的模块;
(5)接收机、终端设备、蜂窝电话、无线设备、手持机、移动单元,网络设备等等;
(6)其他等等。
图15为本申请一实施例提供的一种终端设备的结构示意图。该终端设备可适用于本申请上述各实施例中所述的终端设备。为了便于说明,图15仅示出了终端设备的主要部件。如图15所示,终端设备600包括处理器、存储器、控制电路、天线以及输入输出装置。处理器主要用于对通信协议以及通信数据进行处理,以及对整个终端设备进行控制,执行软件程序,处理软件程序的数据。存储器主要用于存储软件程序和数据。射频电路主要用于基带信号与射频信号的转换以及对射频信号的处理。天线主要用于收发电磁波形式的射频信号。输入输出装置,例如触摸屏、显示屏,键盘等主要用于接收用户输入的数据以及对用户输出数据。
当终端设备开机后,处理器可以读取存储单元中的软件程序,解释并执行软件程序的指令,处理软件程序的数据。当需要通过无线发送数据时,处理器对待发送的数据进行基带处理后,输出基带信号至射频电路,射频电路将基带信号进行射频处理后 将射频信号通过天线以电磁波的形式向外发送。当有数据发送到终端设备时,射频电路通过天线接收到射频信号,将射频信号转换为基带信号,并将基带信号输出至处理器,处理器将基带信号转换为数据并对该数据进行处理。
本领域技术人员可以理解,为了便于说明,图15仅示出了一个存储器和处理器。在实际的终端设备中,可以存在多个处理器和存储器。存储器也可以称为存储介质或者存储设备等,本申请实施例对此不做限制。
作为一种可选的实现方式,处理器可以包括基带处理器和中央处理器,基带处理器主要用于对通信协议以及通信数据进行处理,中央处理器主要用于对整个终端设备进行控制,执行软件程序,处理软件程序的数据。图15中的处理器集成了基带处理器和中央处理器的功能,本领域技术人员可以理解,基带处理器和中央处理器也可以是各自独立的处理器,通过总线等技术互联。本领域技术人员可以理解,终端设备可以包括多个基带处理器以适应不同的网络制式,终端设备可以包括多个中央处理器以增强其处理能力,终端设备的各个部件可以通过各种总线连接。所述基带处理器也可以表述为基带处理电路或者基带处理芯片。所述中央处理器也可以表述为中央处理电路或者中央处理芯片。对通信协议以及通信数据进行处理的功能可以内置在处理器中,也可以以软件程序的形式存储在存储单元中,由处理器执行软件程序以实现基带处理功能。
在一个例子中,可以将具有收发功能的天线和控制电路视为终端设备600的收发模块601,将具有处理功能的处理器视为终端设备600的处理模块602。如图15所示,终端设备600包括收发模块601和处理模块602。收发模块也可以称为收发器、收发机、收发装置等。可选的,可以将收发模块601中用于实现接收功能的器件视为接收模块,将收发模块601中用于实现发送功能的器件视为发送模块,即收发模块601包括接收模块和发送模块示例性的,接收模块也可以称为接收机、接收器、接收电路等,发送模块可以称为发射机、发射器或者发射电路等。
本申请实施例还提供一种可读存储介质,所述可读存储介质上存储有计算机程序;所述计算机程序被执行时,实现上述第一终端设备对应的通信方法或者第二终端设备对应的通信方法或者发送终端设备对应的通信方法或者接收终端设备对应的通信方法。
在上述实施例中,可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时,可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时,全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中,或者从一个计算机可读存储介质向另一个计算机可读存储介质传输,例如,所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质,(例如,软盘、硬盘、磁带)、光介质(例如,DVD)、或者半导体介质(例如固态硬盘Solid State Disk (SSD))等。
以上所述,仅为本发明的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本发明的保护范围之内。因此,本发明的保护范围应以所述权利要求的保护范围为准。
Claims (40)
- 一种通信方法,应用于第一终端设备,其特征在于,包括:获取第一频域映射样式信息,所述第一频域映射样式包括第一参考信号映射样式信息和第一数据映射样式信息,所述第一参考信号映射样式信息用于指示在一个正交频分复用OFDM符号的频域资源映中射参考信号的样式,所述第一数据映射样式信息用于指示在一个OFDM符号的频域资源中映射数据的样式;所述第一参考信号映射样式信息为至少两种参考信号映射样式信息中的一种,所述第一数据映射样式信息为至少两种数据映射样式信息中的一种;根据所述第一频域映射样式信息,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据;在所述第一时频资源上向第二终端设备发送所述参考信号和/或所述数据。
- 根据权利要求1所述的方法,其特征在于,所述获取第一频域映射样式信息,包括:从网络设备接收所述第一频域映射样式信息。
- 根据权利要求1所述的方法,其特征在于,所述获取第一频域映射样式信息,包括:从所述至少两种参考信号映射样式信息中确定所述第一参考信号映射样式信息,所述至少两种参考信号映射样式信息是预定义的,或者是高层信令配置的;从所述至少两种数据映射样式信息中确定第一数据映射样式信息,所述至少两种数据映射样式信息是预定义的,或者是高层信令配置的。
- 根据权利要求1~3任一项所述的方法,其特征在于,所述方法还包括:向所述第二终端设备发送所述第一频域映射样式信息。
- 一种通信方法,应用于第二终端设备,其特征在于,包括:从第一终端设备或网络设备接收第一频域映射样式信息,所述第一频域映射样式包括第一参考信号映射样式信息和第一数据映射样式信息,所述第一参考信号映射样式信息用于指示在一个正交频分复用OFDM符号的频域资源中映射参考信号的样式,所述第一数据映射样式信息用于指示在一个OFDM符号的频域资源中映射数据的样式;所述第一参考信号映射样式信息为至少两种参考信号映射样式信息中的一种,所述第一数据映射样式信息为至少两种数据映射样式信息中的一种;所述第一频域映射样式信息用于所述第一终端设备在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据;根据所述第一频域样式信息,在所述第一时频资源上获取所述参考信号和/或所述数据。
- 一种通信方法,应用于网络设备,其特征在于,包括:获取第一频域映射样式信息,所述第一频域映射样式包括第一参考信号映射样式信息和第一数据映射样式信息,所述第一参考信号映射样式信息用于指示在一个正交频分复用OFDM符号的频域资源中映射参考信号的样式,所述第一数据映射样式信息用于指示在一个OFDM符号的频域资源中映射数据的样式;所述第一参考信号映射样 式信息为至少两种参考信号映射样式信息中的一种,所述第一数据映射样式信息为至少两种数据映射样式信息中的一种;所述第一频域映射样式信息用于第一终端设备在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据,其中,所述第一时频资源用于所述第一终端设备向第二终端设备发送所述参考信号和/或所述数据;向所述第一终端设备和/或所述第二终端设备发送所述第一频域映射样式信息。
- 根据权利要求1~6任一项所述的方法,其特征在于,所述参考信号为自动增益控制AGC参考信号,或者所述参考信号为解调参考信号DMRS。
- 根据权利要求1~7任一项所述的方法,其特征在于,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述映射组的N个RE中包括M个用于映射参考信号的RE,M≤N,所述N为正整数,所述M为整数;所述第一参考信号映射样式信息包括指示连续的N个RE为一个映射组的信息;或者,所述第一参考信号映射样式信息包括指示一个OFDM符号的频域资源中不存在用于映射参考信号的RE的信息;或者,所述第一参考信号映射样式信息包括指示一个OFDM符号的频域资源中存在用于映射参考信号的RE的信息;或者,所述第一参考信号映射样式信息包括指示连续的N个RE中存在M个用于映射参考信号的RE的信息。
- 根据权利要求8所述的方法,其特征在于,所述N为如下中的任意一个:1、2、3、4、6、12;所述M为如下中的任意一个:0、1、2、3、4、6。
- 根据权利要求1-9任一项所述的方法,其特征在于,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息包括第一预选频域偏置;其中,所述映射组中的第一个RE或最后一个RE为参考RE,所述映射组中用于映射参考信号的M个RE中与所述参考RE之间间隔的RE最少的RE为起始RE,所述第一预选频域偏置为所述起始RE与所述参考RE之间的频域偏置,所述M为正整数,M≤N。
- 根据权利要求1~4,7~9任一项所述的方法,其特征在于,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息不包括第一预选频域偏置,所述第一预选频域偏置为起始RE与参考RE之间的频域偏置,所述映射组中的第一个RE或最后一个RE为所述参考RE,所述映射组中用于映射参考信号的M个RE中与所述参考RE之间间隔的RE最少的RE为起始RE,所述M为正整数,M≤N;所述方法还包括:获取所述第一预选频域偏置;所述根据所述第一频域映射样式信息,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据,包括:根据所述第一频域映射样式信息和所述第一预选频域偏置,在所述第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据。
- 根据权利要求1~11任一项所述的方法,其特征在于,一个OFDM符号的频 域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息包括第一频域偏置参数集;所述第一频域偏置参数集包括的第一参数与第一预选频域偏置的和为所述映射组中用于映射参考信号的M个RE中的第一RE的第一频域偏置,所述第一RE为所述M个RE中的任一个RE,所述第一参数为所述第一频域偏置参数集中与所述第一RE对应的参数,所述映射组中的第一个RE或最后一个RE为参考RE,所述第一RE的第一频域偏置为所述第一RE所述参考RE之间的频域偏置,所述M为正整数,M≤N;所述映射组中用于映射参考信号的RE中与所述参考RE之间间隔的RE最少的RE为起始RE,所述第一预选频域偏置为所述起始RE与参考RE之间的频域偏置。
- 根据权利要求1~4,7~11任一项所述的方法,其特征在于,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息不包括第一频域偏置参数集,所述第一频域偏置参数集包括的第一参数与第一预选频域偏置的和为所述映射组中用于映射参考信号的M个RE中的第一RE的第一频域偏置,所述第一RE为所述M个RE中的任一个RE,所述第一参数为所述第一频域偏置参数集中与所述第一RE对应的参数,所述映射组中的第一个RE或最后一个RE为参考RE,所述第一RE的第一频域偏置为所述第一RE相对于所述参考RE的频域偏置,所述M为整数,M≤N;所述映射组中用于映射参考信号的RE中与所述参考RE之间间隔的RE最少的RE为起始RE,所述第一预选频域偏置为所述起始RE与参考RE之间的频域偏置;所述方法还包括:获取所述第一频域偏置参数集;所述根据所述第一频域映射样式信息,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据,包括:根据所述第一频域映射样式信息和所述第一频域偏置参数集,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据。
- 根据权利要求1~9任一项所述的方法,其特征在于,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息包括所述映射组用于映射参考信号的M个RE各自的第一频域偏置;其中,所述映射组中的第一个RE或最后一个RE为参考RE,对于所述M个RE中的任一个第一RE,所述第一RE的第一频域偏置为所述第一RE与参考RE之间的频域偏置,所述M为正整数,M≤N。
- 根据权利要求1~4,7~9任一项所述的方法,其特征在于,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息不包括所述映射组中用于映射参考信号的M个RE各自的第一频域偏置,所述映射组中的第一个RE或最后一个RE为参考RE,对于所述M个RE中的任一个第一RE,所述第一RE的第一频域偏置为所述第一RE与所述参考RE之间的频域偏置,所述M为正整数,M≤N;所述方法还包括:获取所述映射组中用于映射参考信号的M个RE各自的第一频域偏置;所述根据所述第一频域映射样式信息,在第一时频资源中的至少一个OFDM符号 的频域资源中映射参考信号和/或数据,包括:根据所述第一频域映射样式信息和所述映射组中用于映射参考信号的M个RE各自的第一频域偏置,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据。
- 根据权利要求1~15任一项所述的方法,其特征在于,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一数据映射样式信息包括:所述映射组中用于映射所述数据的RE的第一密度;其中,所述第一密度为在所述映射组中用于映射数据的RE的数目H与所述N的比值,所述H为整数,H≤N;或者,第一指示信息,所述第一指示信息指示一个OFDM符号对应的第一频域范围内的频域资源中,除了映射所述参考信号的RE以外的RE均为用于映射所述数据的RE;或者,第二指示信息,所述第二指示信息指示一个OFDM符号对应的第一频域范围内的频域资源中,不存在用于映射所述数据的RE。
- 根据权利要求16所述的方法,其特征在于,所述第一密度为如下中的一个值: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。
- 根据权利要求1~17任一项所述的方法,其特征在于,所述第一频域映射样式信息包括所述映射组中用于映射所述数据的H个RE各自的第二频域偏置,所述H为整数,H≤N;其中,所述映射组中的第一个RE或最后一个RE为参考RE,对于所述H个RE中的任一个第二RE,所述第二RE的第二频域偏置为所述第二RE与参考RE之间的频域偏置。
- 根据权利要求1~4,7~17任一项所述的方法,其特征在于,所述第一频域映射样式信息不包括所述映射组中用于映射所述数据的H个RE各自的第二频域偏置,所述映射组中的第一个RE或最后一个RE为参考RE,对于所述H个RE中的任一个第二RE,所述第二RE的第二频域偏置为所述第二RE与参考RE之间的频域偏置,所述H为整数,H≤N;所述方法还包括:获取所述映射组中用于映射所述数据的H个RE各自的第二频域偏置;所述根据所述第一频域映射样式信息,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据,包括:根据所述第一频域映射样式信息和映射组中用于映射所述数据的H个RE各自的第二频域偏置,在所述第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据。
- 一种通信装置,其特征在于,包括:接收模块或处理模块,用于获取第一频域映射样式信息,所述第一频域映射样式包括第一参考信号映射样式信息和第一数据映射样式信息,所述第一参考信号映射样式信息用于指示在一个正交频分复用OFDM符号的频域资源中映射参考信号的样式, 所述第一数据映射样式信息用于指示在一个OFDM符号的频域资源中映射数据的样式;所述第一参考信号映射样式信息为至少两种参考信号映射样式信息中的一种,所述第一数据映射样式信息为至少两种数据映射样式信息中的一种;所述处理模块,还用于根据所述第一频域映射样式信息,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据;发送模块,用于在所述第一时频资源上向第二终端设备发送所述参考信号和/或所述数据。
- 根据权利要求20所述的通信装置,其特征在于,所述接收模块用于获取第一频域映射样式信息,包括:所述接收模块,具体用于从网络设备接收所述第一频域映射样式信息。
- 根据权利要求20所述的通信装置,其特征在于,所述处理模块用于获取第一频域映射样式信息,包括:所述处理模块,具体用于从所述至少两种参考信号映射样式信息中确定所述第一参考信号映射样式信息,所述至少两种参考信号映射样式信息是预定义的,或者是高层信令配置的;以及,从所述至少两种数据映射样式信息中确定第一数据映射样式信息,所述至少两种数据映射样式信息是预定义的,或者是高层信令配置的。
- 根据权利要求20~22任一项所述的通信装置,其特征在于,所述发送模块,还用于向所述第二终端设备发送所述第一频域映射样式信息。
- 一种通信装置,其特征在于,包括:接收模块,用于从第一终端设备或网络设备接收第一频域映射样式信息,所述第一频域映射样式包括第一参考信号映射样式信息和第一数据映射样式信息,所述第一参考信号映射样式信息用于指示在一个正交频分复用OFDM符号的频域资源中映射参考信号的样式,所述第一数据映射样式信息用于指示在一个OFDM符号的频域资源中映射数据的样式;所述第一参考信号映射样式信息为至少两种参考信号映射样式信息中的一种,所述第一数据映射样式信息为至少两种数据映射样式信息中的一种;所述第一频域映射样式信息用于所述第一终端设备在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据;处理模块,用于根据所述第一频域样式信息,在所述第一时频资源上获取所述参考信号和/或所述数据。
- 一种通信装置,其特征在于,包括:处理模块,用于获取第一频域映射样式信息,所述第一频域映射样式包括第一参考信号映射样式信息和第一数据映射样式信息,所述第一参考信号映射样式信息用于指示在一个正交频分复用OFDM符号的频域资源中映射参考信号的样式,所述第一数据映射样式信息用于指示在一个OFDM符号的频域资源中映射数据的样式;所述第一参考信号映射样式信息为至少两种参考信号映射样式信息中的一种,所述第一数据映射样式信息为至少两种数据映射样式信息中的一种;所述第一频域映射样式信息用于第一终端设备在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据,其中,所述第一时频资源用于所述第一终端设备向第二终端设备发送所述参 考信号和/或所述数据;发送模块,用于向所述第一终端设备和/或所述第二终端设备发送所述第一频域映射样式信息。
- 根据权利要求20~25任一项所述的通信装置,其特征在于,所述参考信号为自动增益控制AGC参考信号,或者所述参考信号为解调参考信号DMRS。
- 根据权利要求20~26任一项所述的通信装置,其特征在于,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述映射组的N个RE中包括M个用于映射参考信号的RE,M≤N,所述N为正整数,所述M为整数;所述第一参考信号映射样式信息包括指示连续的N个RE为一个映射组的信息;或者,所述第一参考信号映射样式信息包括指示一个OFDM符号的频域资源中不存在用于映射参考信号的RE的信息;或者,所述第一参考信号映射样式信息包括指示一个OFDM符号的频域资源中存在用于映射参考信号的RE的信息;或者,所述第一参考信号映射样式信息包括指示连续的N个RE中存在M个用于映射参考信号的RE的信息。
- 根据权利要求27所述的通信装置,其特征在于,所述N为如下中的任意一个:1、2、3、4、6、12;所述M为如下中的任意一个:0、1、2、3、4、6。
- 根据权利要求20-28任一项所述的通信装置,其特征在于,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息包括第一预选频域偏置;其中,所述映射组中的第一个RE或最后一个RE为参考RE,所述映射组中用于映射参考信号的M个RE中与所述参考RE之间间隔的RE最少的RE为起始RE,所述第一预选频域偏置为所述起始RE与所述参考RE之间的频域偏置,所述M为正整数,M≤N。
- 根据权利要求20~23,26~28任一项所述的通信装置,其特征在于,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息不包括第一预选频域偏置,所述第一预选频域偏置为起始RE与参考RE之间的频域偏置,所述映射组中的第一个RE或最后一个RE为所述参考RE,所述映射组中用于映射参考信号的M个RE中与所述参考RE之间间隔的RE最少的RE为起始RE,所述M为正整数,M≤N;所述处理模块或所述接收模块,还用于获取所述第一预选频域偏置;所述处理模块,用于根据所述第一频域映射样式信息,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据,包括:所述处理模块,具体用于根据所述第一频域映射样式信息和所述第一预选频域偏置,在所述第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据。
- 根据权利要求20~30任一项所述的通信装置,其特征在于,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息包括第一频域偏置参数集;所述第一频域偏置参数集包括的第一参数与第一预选频域偏置的和为所述映射组中用于映射参考信号的M个RE中的第一RE的第一频域偏置,所述第一RE为所述M个RE中的任一个RE,所述第一参数为所述第一频域偏置参数集中与所述第一RE对应的参数,所述映射组中的第一个RE或最后一个RE为参考RE,所述第一RE的第一频域偏置为所述第一RE所述参考RE之间的频域偏置,所述M为正整数,M≤N;所述映射组中用于映射参考信号的RE中与所述参考RE之间间隔的RE最少的RE为起始RE,所述第一预选频域偏置为所述起始RE与参考RE之间的频域偏置。
- 根据权利要求20~23,26~30任一项所述的通信装置,其特征在于,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息不包括第一频域偏置参数集,所述第一频域偏置参数集包括的第一参数与第一预选频域偏置的和为所述映射组中用于映射参考信号的M个RE中的第一RE的第一频域偏置,所述第一RE为所述M个RE中的任一个RE,所述第一参数为所述第一频域偏置参数集中与所述第一RE对应的参数,所述映射组中的第一个RE或最后一个RE为参考RE,所述第一RE的第一频域偏置为所述第一RE相对于所述参考RE的频域偏置,所述M为整数,M≤N;所述映射组中用于映射参考信号的RE中与所述参考RE之间间隔的RE最少的RE为起始RE,所述第一预选频域偏置为所述起始RE与参考RE之间的频域偏置;所述处理模块或所述接收模块,还用于获取所述第一频域偏置参数集;所述处理模块,用于根据所述第一频域映射样式信息,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据,包括:所述处理模块,具体用于根据所述第一频域映射样式信息和所述第一频域偏置参数集,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据。
- 根据权利要求20~28任一项所述的通信装置,其特征在于,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息包括所述映射组用于映射参考信号的M个RE各自的第一频域偏置;其中,所述映射组中的第一个RE或最后一个RE为参考RE,对于所述M个RE中的第一RE,所述第一RE的第一频域偏置为所述第一RE与参考RE之间的频域偏置,所述M为正整数,M≤N。
- 根据权利要求20~23,26~28任一项所述的通信装置,其特征在于,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一频域映射样式信息不包括所述映射组中用于映射参考信号的M个RE各自的第一频域偏置,所述映射组中的第一个RE或最后一个RE为参考RE,对于所述M个RE中的任一个第一RE,所述第一RE的第一频域偏置为所述第一RE与所述参考RE之间的频域偏置,所述M为正整数,M≤N;所述处理模块或所述接收模块,还用于获取所述映射组中用于映射参考信号的M个RE各自的第一频域偏置;所述处理模块,用于根据所述第一频域映射样式信息,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据,包括:所述处理模块,具体用于根据所述第一频域映射样式信息和所述映射组中用于映射参考信号的M个RE各自的第一频域偏置,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据。
- 根据权利要求20~34任一项所述的通信装置,其特征在于,一个OFDM符号的频域资源中的每N个连续的资源粒子RE为一个映射组,所述N为正整数;所述第一数据映射样式信息包括:所述映射组中用于映射所述数据的RE的第一密度;其中,所述第一密度为在所述映射组中用于映射数据的RE的数目H与所述N的比值,所述H为整数,H≤N;或者,第一指示信息,所述第一指示信息指示一个OFDM符号对应的第一频域范围内的频域资源中,除了映射所述参考信号的RE以外的RE均为用于映射所述数据的RE;或者,第二指示信息,所述第二指示信息指示一个OFDM符号对应的第一频域范围内的频域资源中,不存在用于映射所述数据的RE。
- 根据权利要求35所述的通信装置,其特征在于,所述第一密度为如下中的一个值: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。
- 根据权利要求20~36任一项所述的通信装置,其特征在于,所述第一频域映射样式信息包括所述映射组中用于映射所述数据的H个RE各自的第二频域偏置,所述H为整数,H≤N;其中,所述映射组中的第一个RE或最后一个RE为参考RE,对于所述H个RE中的任一个第二RE,所述第二RE的第二频域偏置为所述第二RE与参考RE之间的频域偏置。
- 根据权利要求20~23,26~36任一项所述的通信装置,其特征在于,所述第一频域映射样式信息不包括所述映射组中用于映射所述数据的H个RE各自的第二频域偏置,所述映射组中的第一个RE或最后一个RE为参考RE,对于所述H个RE中的任一个第二RE,所述第二RE的第二频域偏置为所述第二RE与参考RE之间的频域偏置,所述H为整数,H≤N;所述处理模块或所述接收模块,还用于获取所述映射组中用于映射所述数据的H个RE各自的第二频域偏置;所述处理模块,用于根据所述第一频域映射样式信息,在第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据,包括:所述处理模块,具体用于根据所述第一频域映射样式信息和映射组中用于映射所述数据的H个RE各自的第二频域偏置,在所述第一时频资源中的至少一个OFDM符号的频域资源中映射参考信号和/或数据。
- 一种通信装置,其特征在于,所述通信装置包括处理器和存储介质,所述存储介质存储有指令,所述指令被所述处理器运行时,使得所述处理器执行如权利要求1-19任一项所述的通信方法。
- 一种可读存储介质,其特征在于,所述可读存储介质上存储有计算机程序;所述计算机程序被执行时,实现如权利要求1-19任一项所述的方法。
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103248469A (zh) * | 2012-02-03 | 2013-08-14 | 中兴通讯股份有限公司 | 一种控制信令和解调导频的发送、检测方法、系统和基站 |
| CN108234096A (zh) * | 2016-12-21 | 2018-06-29 | 华为技术有限公司 | 参考信号的发送和接收方法,接入网设备和终端设备 |
| EP3352395A1 (en) * | 2015-09-24 | 2018-07-25 | Sony Corporation | Device used at wireless communication base station side and user equipment side, and method |
| CN109565429A (zh) * | 2017-06-09 | 2019-04-02 | Lg 电子株式会社 | 在无线通信系统中发送/接收参考信号的方法及其设备 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018064608A1 (en) * | 2016-09-30 | 2018-04-05 | Intel IP Corporation | Demodulation reference signal design and multiplexing using different numerologies |
| CN108366375B (zh) * | 2017-01-26 | 2021-09-14 | 华为技术有限公司 | 一种共享下行频谱的方法和装置 |
| KR20180092285A (ko) * | 2017-02-07 | 2018-08-17 | 한국전자통신연구원 | 무선 통신 시스템의 빔 인덱스 지시 수신 방법 |
| EP4708714A2 (en) * | 2017-03-23 | 2026-03-11 | Innovative Technology Lab Co., Ltd. | Method and apparatus for transmitting and receiving demodulation reference signal |
| CN109818721A (zh) * | 2017-11-20 | 2019-05-28 | 索尼公司 | 用于无线通信的电子设备和方法、计算机可读存储介质 |
-
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103248469A (zh) * | 2012-02-03 | 2013-08-14 | 中兴通讯股份有限公司 | 一种控制信令和解调导频的发送、检测方法、系统和基站 |
| EP3352395A1 (en) * | 2015-09-24 | 2018-07-25 | Sony Corporation | Device used at wireless communication base station side and user equipment side, and method |
| CN108234096A (zh) * | 2016-12-21 | 2018-06-29 | 华为技术有限公司 | 参考信号的发送和接收方法,接入网设备和终端设备 |
| CN109565429A (zh) * | 2017-06-09 | 2019-04-02 | Lg 电子株式会社 | 在无线通信系统中发送/接收参考信号的方法及其设备 |
Non-Patent Citations (1)
| Title |
|---|
| HUAWEI; HISILICON: "Sidelink Reference Signal Design for NR V2X", 3GPP DRAFT; R1-1903945, 12 April 2019 (2019-04-12), Xi’an, China, pages 1 - 12, XP051707060 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024061072A1 (zh) * | 2022-09-23 | 2024-03-28 | 华为技术有限公司 | 通信方法和装置 |
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