WO2020037468A1 - 信道估计方法、装置、设备、基站及存储介质 - Google Patents

信道估计方法、装置、设备、基站及存储介质 Download PDF

Info

Publication number
WO2020037468A1
WO2020037468A1 PCT/CN2018/101381 CN2018101381W WO2020037468A1 WO 2020037468 A1 WO2020037468 A1 WO 2020037468A1 CN 2018101381 W CN2018101381 W CN 2018101381W WO 2020037468 A1 WO2020037468 A1 WO 2020037468A1
Authority
WO
WIPO (PCT)
Prior art keywords
pilot
carrier frequency
distribution
relative speed
subcarrier interval
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2018/101381
Other languages
English (en)
French (fr)
Inventor
李媛媛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Xiaomi Mobile Software Co Ltd
Original Assignee
Beijing Xiaomi Mobile Software Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing Xiaomi Mobile Software Co Ltd filed Critical Beijing Xiaomi Mobile Software Co Ltd
Priority to PCT/CN2018/101381 priority Critical patent/WO2020037468A1/zh
Priority to US17/269,414 priority patent/US11848801B2/en
Priority to EP18930809.1A priority patent/EP3843345A4/en
Priority to CN201880001073.9A priority patent/CN109314680B/zh
Publication of WO2020037468A1 publication Critical patent/WO2020037468A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/022—Channel estimation of frequency response
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/26025—Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • 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
    • H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
    • 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
    • H04L5/0057—Physical resource allocation for CQI
    • 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
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0094—Indication of how sub-channels of the path are allocated

Definitions

  • the present disclosure relates to the field of wireless communication technologies, and in particular, to a channel estimation method, device, device, base station, and storage medium.
  • V2X Everything for Vehicles, Wireless Communication Technology
  • 4G the 4th Generation Communication System
  • 5G the 5th Generation Communication System
  • C-V2X includes two communication interfaces, one is a short-distance direct communication interface between a car and a target object (for example, a car, a person, or a road), and the other is a long-range and larger-range cellular Communication Interface.
  • the communication standard of the short-distance direct communication interface is based on D2D (Device to Device, Device-to-Device Communication Technology) and uses a broadcast communication method.
  • the first terminal of the current vehicle will carry the broadcast information in the RB (Resource Block), the broadcast information is broadcasted to second terminals of a plurality of surrounding vehicles through the RB. Since the RB has pilot symbols, the first terminal can use the pilot symbols to perform channel estimation.
  • the fixed subcarrier interval is 15KHz
  • the scheduling is based on subframes
  • one subframe is 1ms in length.
  • One subframe includes 14 OFDM (Orthogonal Frequency Division Multiplexing, or orthogonal frequency division multiplexing) symbols, and pilot symbols. Four of them are occupied, which are the third OFDM symbol, the sixth OFDM symbol, the ninth OFDM symbol, and the twelfth OFDM symbol.
  • the first terminal uses four pilot symbols to perform channel estimation.
  • the channel correlation time is in the order of ms to obtain an accurate channel estimation value.
  • an important application scenario of V2R is high speed, and the channel correlation time is ⁇ s at this time. Level, the channel correlation time is low, if the channel estimation is also performed by the above method, the result will be extremely inaccurate.
  • the present disclosure provides a channel estimation method, device, device, base station, and storage medium, thereby improving the accuracy of channel estimation.
  • the technical solution is as follows:
  • a channel estimation method is provided.
  • the method is applied to a first device.
  • the method includes:
  • the current channel is estimated based on the at least one pilot symbol.
  • the determining is performed in the RB according to a carrier frequency and a subcarrier interval of a subcarrier included in the RB, and a relative speed between the first device and the second device.
  • At least one pilot symbol including:
  • the first pilot distribution in the frequency domain of the pilot symbols in the RB is determined according to the carrier frequency and the subcarrier interval, and according to the carrier frequency, subcarrier
  • the carrier interval and the relative speed to determine a second pilot distribution of the pilot symbols in the RB in the time domain include:
  • the communication protocol stores a correspondence relationship between a carrier frequency, a subcarrier interval, a relative speed range, and a second pilot distribution.
  • the first pilot distribution in the frequency domain of the pilot symbols in the RB is determined according to the carrier frequency and the subcarrier interval, and according to the carrier frequency and the Said relative speed, and determining the second pilot distribution of the pilot symbols in the RB in the time domain includes:
  • the query request carries the carrier frequency, the subcarrier interval, and the relative speed
  • the query request is used by the base station to determine the carrier frequency based on the carrier frequency and the subcarrier interval.
  • the estimating the current channel based on the at least one pilot symbol includes:
  • the method further includes:
  • the determining is performed in the RB according to a carrier frequency and a subcarrier interval of a subcarrier included in the RB, and a relative speed between the first device and the second device.
  • At least one pilot symbol including:
  • the configuration request carrying the carrier frequency, the subcarrier interval, and the relative speed, the configuration request being used by the base station based on the carrier frequency, the subcarrier interval, and the The relative speed configures at least one pilot symbol in the RB;
  • the at least one pilot symbol is determined in the RB.
  • a channel estimation method is provided.
  • the method is applied to a base station, and the method includes:
  • the distribution information is used by the first device to determine the at least one pilot symbol in the RB, and based on the at least one pilot symbol Frequency symbols to estimate the current channel.
  • the distribution information includes a first pilot distribution and a second pilot distribution, the carrier frequency and the subcarrier interval according to the subcarriers included in the RB, and the first device and the The relative speed between the second devices, and determining the distribution information of the at least one pilot symbol in the RB includes:
  • the query request carrying the carrier frequency, the subcarrier interval, and the relative speed
  • the distribution information includes an identifier of a pilot symbol, the carrier frequency and a subcarrier interval according to the subcarriers included in the RB, and between the first device and the second device Determining the distribution information of at least one pilot symbol in the RB includes:
  • a channel estimation method is provided.
  • the method is applied to a base station, and the method includes:
  • the acquisition request is used to acquire the first communication protocol and the second communication protocol
  • the first communication protocol stores a carrier frequency, a subcarrier interval, and a first pilot distribution
  • the second communication protocol stores a corresponding relationship between a carrier frequency, a subcarrier interval, a relative speed range, and a second pilot distribution
  • the first message is a message transmitted between the first device and a second device.
  • the method further includes:
  • a plurality of relative speed ranges corresponding to the plurality of sample relative speeds and a second pilot distribution of the plurality of samples to generate a second communication protocol.
  • a channel estimation apparatus is provided.
  • the apparatus is applied to a first device.
  • the apparatus includes:
  • a first determining module configured to determine a resource group RB carrying the first message when the first message is transmitted between the first device and the second device;
  • a second determining module configured to determine at least one pilot in the RB according to a carrier frequency and a subcarrier interval of a subcarrier included in the RB, and a relative speed between the first device and the second device; Frequency symbol
  • An estimation module is configured to estimate a current channel based on the at least one pilot symbol.
  • the second determining module is further configured to determine a first pilot distribution of pilot symbols in the RB in the frequency domain according to the carrier frequency and the subcarrier interval, And determining a second pilot distribution of pilot symbols in the RB in the time domain according to the carrier frequency, subcarrier interval, and the relative speed; according to the first pilot distribution and the second pilot Frequency distribution, at least one pilot symbol is set on the RB.
  • the second determining module is further configured to obtain the pilot frequency of the pilot symbol in the RB from the stored first communication protocol according to the carrier frequency and the subcarrier interval.
  • a first pilot distribution in the domain, and a correspondence between a carrier frequency, a subcarrier interval, and a first pilot distribution is stored in the first communication protocol; and according to the carrier frequency, the subcarrier interval, and the relative Speed, the second pilot distribution in the time domain of the pilot symbols in the RB is obtained from a stored second communication protocol, and the carrier frequency, subcarrier interval, relative speed range, and Correspondence of the second pilot distribution.
  • the second determining module is further configured to send a query request to a base station, where the query request carries the carrier frequency, the subcarrier interval, and the relative speed, and the query request is used for Determining, by the base station according to the carrier frequency and the subcarrier interval, a first pilot distribution of pilot symbols in the RB in the frequency domain, and according to the carrier frequency, the subcarrier interval, and the The relative speed determines a second pilot distribution of the pilot symbols in the RB in the time domain; and receives the first pilot distribution and the second pilot distribution returned by the base station.
  • the estimation module is further configured to determine the number of symbols occupied by the current channel in the time domain; according to the number of symbols and the number of subcarriers included in the RB, Determine a plurality of target resource block REs; estimate the current channel based on at least one pilot symbol in the plurality of target REs.
  • the apparatus further includes:
  • a first sending module configured to send an acquisition request to a base station, where the acquisition request is used to acquire the first communication protocol and the second communication protocol;
  • a first receiving module configured to receive the first communication protocol and the second communication protocol returned by the base station.
  • the second determining module is further configured to send a configuration request to a base station, where the configuration request carries the carrier frequency, the subcarrier interval, and the relative speed, and the configuration request is used for Configuring at least one pilot symbol in the RB based on the carrier frequency, the subcarrier interval, and the relative speed at the base station; receiving an identifier of the at least one pilot symbol returned by the base station; The at least one pilot symbol is described, and the at least one pilot symbol is determined in the RB.
  • an apparatus for channel estimation is provided.
  • the apparatus is applied to a base station.
  • the apparatus includes:
  • An allocation module configured to allocate a resource group RB carrying the first message to the first device when the first message is transmitted between the first device and the second device;
  • a second sending module configured to return distribution information of the at least one pilot symbol to the first device, where the distribution information is used by the first device to determine the at least one pilot symbol in the RB, And estimate the current channel based on the at least one pilot symbol.
  • the distribution information includes a first pilot distribution and a second pilot distribution
  • the third determining module is further configured to receive a query request sent by the first device, the query request Carry the carrier frequency, the subcarrier interval, and the relative speed; determine a first pilot distribution of pilot symbols in the RB in the frequency domain according to the carrier frequency and the subcarrier interval; according to The carrier frequency and the relative speed determine a second pilot distribution of the pilot symbols in the RB in the time domain.
  • the distribution information includes an identifier of a pilot symbol
  • the third determining module is further configured to receive a configuration request sent by the first device, where the configuration request carries the carrier frequency, The subcarrier interval and the relative speed; determining a first pilot distribution of the pilot symbols in the RB in the frequency domain according to the carrier frequency and the subcarrier interval; according to the carrier frequency, subcarrier Carrier interval and the relative speed, determine a second pilot distribution of the pilot symbols in the RB in the time domain; and according to the first pilot distribution and the second pilot distribution, on the RB Setting at least one pilot symbol; determining an identity of the at least one pilot symbol.
  • an apparatus for channel estimation is provided.
  • the apparatus is applied to a base station.
  • the apparatus includes:
  • the second receiving module is configured to receive an acquisition request sent by the first device, where the acquisition request is used to acquire the first communication protocol and the second communication protocol, and the first communication protocol stores a carrier frequency and a subcarrier.
  • a correspondence relationship between the interval and the first pilot distribution, and the second communication protocol stores a correspondence relationship between a carrier frequency, a subcarrier interval, a relative speed range, and a second pilot distribution;
  • a third sending module configured to return the first communication protocol and the second communication protocol to the first device, so that the first device is based on the first communication protocol and the second communication protocol in the Determine at least one pilot symbol in a resource group RB carrying a first message, and estimate a current channel based on the at least one pilot symbol, the first message is transmitted between the first device and a second device News.
  • the apparatus further includes:
  • a fourth determining module configured to determine multiple sample carrier frequencies, multiple sample subcarrier intervals, and multiple sample relative velocities; and determine multiple sample first pilots based on the multiple sample carrier frequencies and multiple sample subcarrier intervals. Frequency distribution, and determining a plurality of sample second pilot distributions according to the plurality of sample carrier frequencies and the plurality of sample relative velocities;
  • a generating module configured to generate a first communication protocol based on the multiple sample carrier frequencies, the multiple sample subcarrier intervals, and the multiple sample first pilot distributions, and based on the multiple sample carrier frequencies, all The second sub-carrier interval, the relative speed ranges corresponding to the relative speeds of the multiple samples, and the second pilot distribution of the multiple samples generate a second communication protocol.
  • a device including:
  • Memory for storing processor-executable instructions
  • the processor is configured to:
  • the current channel is estimated based on the at least one pilot symbol.
  • a base station including:
  • Memory for storing processor-executable instructions
  • the processor is configured to:
  • the distribution information is used by the first device to determine the at least one pilot symbol in the RB, and based on the at least one pilot symbol Frequency symbols to estimate the current channel.
  • a base station including:
  • Memory for storing processor-executable instructions
  • the processor is configured to:
  • the first message is a message transmitted between the first device and a second device.
  • a computer-readable storage medium having instructions stored thereon, the instructions being executed by a processor to complete the channel according to any one of the first aspects. Estimate method.
  • a computer-readable storage medium having instructions stored on the computer-readable storage medium, the instructions being executed by a processor to complete any one of the second aspect of the right Channel estimation method.
  • a computer-readable storage medium characterized in that the computer-readable storage medium stores instructions, and the instructions are executed by a processor to complete any of the third aspects Item of the channel estimation method described in the item.
  • At least one pilot symbol is determined in the RB according to the carrier frequency, the subcarrier interval, and the relative speed. Since the carrier frequency and the relative speed are considered, the set pilot symbol and the carrier frequency and the relative speed Matching improves the accuracy of determining the pilot symbols, thereby improving the accuracy of channel estimation.
  • Fig. 1 is a structural diagram of a channel estimation system according to an exemplary embodiment
  • Fig. 2 is a schematic diagram showing an RB according to an exemplary embodiment
  • Fig. 3 is a flow chart showing a channel estimation method according to an exemplary embodiment
  • Fig. 4 is a flow chart showing a channel estimation method according to an exemplary embodiment
  • Fig. 5 is a flow chart showing a channel estimation method according to an exemplary embodiment
  • Fig. 6 is a flow chart showing a channel estimation method according to an exemplary embodiment
  • Fig. 7 is a schematic diagram of setting a pilot symbol in an RB according to an exemplary embodiment
  • Fig. 8 is a schematic diagram of setting a pilot symbol in an RB according to an exemplary embodiment
  • Fig. 9 is a schematic diagram of setting a pilot symbol in an RB according to an exemplary embodiment
  • Fig. 10 is a flow chart showing another channel estimation method according to an exemplary embodiment
  • Fig. 11 is a flow chart showing another channel estimation method according to an exemplary embodiment
  • Fig. 12 is a schematic diagram of setting a pilot symbol in an RB according to an exemplary embodiment
  • Fig. 13 is a schematic diagram showing setting a pilot symbol in an RB according to an exemplary embodiment
  • Fig. 14 is a block diagram of a channel estimation device according to an exemplary embodiment
  • Fig. 15 is a block diagram showing a channel estimation device according to an exemplary embodiment
  • Fig. 16 is a block diagram showing a channel estimation device according to an exemplary embodiment
  • Fig. 17 is a block diagram of a device according to an exemplary embodiment
  • Fig. 18 is a block diagram of a base station according to an exemplary embodiment.
  • Fig. 1 is a schematic diagram showing a system architecture involved in a channel estimation method according to some exemplary embodiments of the present disclosure.
  • the system architecture includes a first device 110 and a second device 120.
  • the first device 110 and the second device 120 may be connected through a short-range communication module, or may be connected through a cellular communication module.
  • the short-range communication module may be a D2D communication module, and the cellular communication module may be a 4G or 5G communication module.
  • the first device 110 may be a first terminal, and the first terminal may be a mobile phone terminal or a vehicle-mounted terminal, and the vehicle-mounted terminal may be a terminal in any vehicle. Or terminals in ships, etc.
  • the second device 120 may be a second terminal or a base station. Similarly, the second terminal may be a mobile phone terminal or a vehicle-mounted terminal.
  • the system architecture further includes a base station 130, and the first device 110 and the base station 130 are connected through a cellular communication module.
  • the second device 120 is used as an example for description.
  • system architecture may be a V2X system or a C-V2X system.
  • the first message When transmitting a first message between the first device 110 and the second device 120, the first message needs to be carried in an RB, where the RB has 12 subcarriers in the frequency domain and each subcarrier corresponds to 14 in the time domain OFDM symbol.
  • One OFDM symbol in the time domain of one subcarrier is equivalent to one RE, that is, one RB includes 168 REs (Resource Elements).
  • RE is represented as a subcarrier in the frequency domain and as an OFDM symbol in the time domain.
  • FIG. 2 is a schematic structural diagram of an RB.
  • the design of the pilot structure in the frequency domain of the RB must consider the multipath distribution, carrier frequency, and subcarrier spacing in the mobile propagation environment. Therefore, when determining the position of the pilot in the frequency domain, the relevant bandwidth must be considered.
  • the calculation formula of the bandwidth is: if the envelope correlation coefficient is 0.5, the correlation bandwidth is 1 / (2 * pi * rms); if the correlation coefficient is 0.9, the correlation bandwidth is 1 / (50 * rms delay extension).
  • the delay of rms is related to the carrier frequency and the channel propagation environment, which is generally obtained through measurement statistics. Because the first device 110 and the second device 120 have the characteristics of high-speed movement, the correlation time of the channel needs to be considered in the design of the time domain of the RB, and the correlation time needs to be considered when determining the position of the pilot in the time domain.
  • the calculation formula is: 0.423 / fd, where fd is the maximum Doppler frequency offset, and the interval between pilots in the time domain is less than or equal to the correlation time.
  • Fig. 3 is a flow chart showing a channel estimation method according to an exemplary embodiment. This method is applied to a first device. As shown in FIG. 3, the channel estimation method may include the following steps.
  • step 301 when a first message is transmitted between the first device and a second device, a resource group RB carrying the first message is determined;
  • step 302 at least one pilot symbol is determined in the RB according to a carrier frequency and a subcarrier interval of a subcarrier included in the RB, and a relative speed between the first device and the second device. ;
  • step 303 the current channel is estimated based on the at least one pilot symbol.
  • the determining is performed in the RB according to a carrier frequency and a subcarrier interval of a subcarrier included in the RB, and a relative speed between the first device and the second device.
  • At least one pilot symbol including:
  • the first pilot distribution in the frequency domain of the pilot symbols in the RB is determined according to the carrier frequency and the subcarrier interval, and according to the carrier frequency,
  • the subcarrier interval and the relative speed to determine a second pilot distribution of the pilot symbols in the RB in the time domain include:
  • the communication protocol stores a correspondence relationship between a carrier frequency, a subcarrier interval, a relative speed range, and a second pilot distribution.
  • the first pilot distribution in the frequency domain of the pilot symbols in the RB is determined according to the carrier frequency and the subcarrier interval, and according to the carrier frequency and
  • the relative speed determining the second pilot distribution of the pilot symbols in the RB in the time domain includes:
  • the query request carries the carrier frequency, the subcarrier interval, and the relative speed
  • the query request is used by the base station to determine the carrier frequency based on the carrier frequency and the subcarrier interval.
  • the estimating the current channel based on the at least one pilot symbol includes:
  • the first pilot in the frequency domain of the pilot symbols in the RB from the stored first communication protocol is acquired.
  • the method further includes:
  • the carrier frequency and subcarrier interval of the subcarriers included in the RB and the relative speed between the first device and the second device, in the RB Determine at least one pilot symbol, including:
  • the configuration request carrying the carrier frequency, the subcarrier interval, and the relative speed, the configuration request being used by the base station based on the carrier frequency, the subcarrier interval, and the The relative speed configures at least one pilot symbol in the RB;
  • the at least one pilot symbol is determined in the RB.
  • the first device determines at least one pilot symbol in the RB according to the carrier frequency, the subcarrier interval, and the relative speed. Since the carrier frequency and the relative speed are considered, the set pilot symbol and carrier frequency Matching with the relative speed improves the accuracy of determining the pilot symbols, thereby improving the accuracy of channel estimation.
  • Fig. 4 is a flow chart showing a channel estimation method according to an exemplary embodiment. This method is applied to a base station. As shown in FIG. 4, the channel estimation method may include the following steps.
  • step 401 when a first message is transmitted between a first device and a second device, a resource group RB carrying the first message is allocated to the first device;
  • step 402 according to the carrier frequency and the subcarrier interval of the subcarriers included in the RB, and the relative speed between the first device and the second device, the at least one pilot symbol is determined in the RB.
  • Distribution information
  • step 402 distribution information of the at least one pilot symbol is returned to the first device, where the distribution information is used by the first device to determine the at least one pilot symbol in the RB, and based on The at least one pilot symbol estimates the current channel.
  • the distribution information includes a first pilot distribution and a second pilot distribution, the carrier frequency and the subcarrier interval according to the subcarriers included in the RB, and the first device and the The relative speed between the second devices, and determining the distribution information of the at least one pilot symbol in the RB includes:
  • the query request carrying the carrier frequency, the subcarrier interval, and the relative speed
  • the distribution information includes an identifier of a pilot symbol, the carrier frequency and a subcarrier interval according to the subcarriers included in the RB, and the first device and the second device. Relative speed between the two channels, and determining distribution information of at least one pilot symbol in the RB includes:
  • At least one pilot symbol is determined in the RB according to the carrier frequency, the subcarrier interval, and the relative speed. Since the carrier frequency and the relative speed are considered, the set pilot symbol and the carrier frequency and the relative speed Matching improves the accuracy of determining the pilot symbols, thereby improving the accuracy of channel estimation.
  • Fig. 5 is a flow chart showing a channel estimation method according to an exemplary embodiment. This method is applied to a base station. As shown in FIG. 5, the channel estimation method may include the following steps.
  • step 501 an acquisition request sent by a first device is received, where the acquisition request is used to acquire the first communication protocol and the second communication protocol, and the first communication protocol stores a carrier frequency, a subcarrier interval, and A correspondence between a first pilot distribution, and a correspondence between a carrier frequency, a subcarrier interval, a relative speed range, and a second pilot distribution in the second communication protocol;
  • step 502 the first communication protocol and the second communication protocol are returned to the first device, so that the first device is carrying a first communication protocol based on the first communication protocol and the second communication protocol.
  • a message resource group RB determines at least one pilot symbol, and estimates a current channel based on the at least one pilot symbol.
  • the first message is a message transmitted between the first device and a second device. .
  • the method further includes:
  • a plurality of relative speed ranges corresponding to the plurality of sample relative speeds and a second pilot distribution of the plurality of samples to generate a second communication protocol.
  • the terminal may obtain the first communication protocol and the second communication protocol without passing through the base station, and the terminal may generate the first communication protocol and the second communication protocol through the base station.
  • a communication protocol and a second communication protocol, and the following steps are completed according to the first communication protocol and the second communication protocol.
  • At least one pilot symbol is determined in the RB according to the carrier frequency, the subcarrier interval, and the relative speed. Since the carrier frequency and the relative speed are considered, the set pilot symbol and the carrier frequency and the relative speed Matching improves the accuracy of determining the pilot symbols, thereby improving the accuracy of channel estimation.
  • Fig. 6 is a flow chart showing a channel estimation method according to an exemplary embodiment.
  • a first device obtains a first communication protocol and a second communication protocol from a base station, and then configures at least one pilot symbol on an RB based on the first communication protocol and the second communication protocol, and then based on at least A pilot symbol is used as an example for channel estimation.
  • the channel estimation method may include the following steps.
  • the first device sends an acquisition request to the base station, where the acquisition request is used to acquire a first communication protocol and a second communication protocol.
  • the first communication protocol stores a correspondence between a carrier frequency, a subcarrier interval, and a first pilot distribution.
  • the second communication protocol stores a correspondence relationship between a carrier frequency, a subcarrier interval, a relative speed range, and a second pilot distribution.
  • the first device and the second device can transmit the first message.
  • the first device needs to carry the first message in the RB, and the pilot symbol can be set in the RB. Therefore, the first device can The pilot channel is used to estimate the current channel.
  • the first device sends an acquisition request to the base station, thereby obtaining the first communication protocol and the second communication protocol from the base station, and then based on the first communication protocol and the second communication
  • the protocol determines pilot symbols in the RB.
  • the acquisition request carries at least a device identifier of the first device.
  • the base station receives an acquisition request sent by the first device, and acquires a first communication protocol and a second communication protocol.
  • the base station In a possible implementation manner, the base station generates the first communication protocol and the second communication protocol when receiving the acquisition request sent by the first device; in another possible implementation manner, the base station generates the first communication protocol and the second communication protocol in advance. Communication protocol; when the base station receives the acquisition request sent by the first device, it acquires the generated first communication protocol and second communication protocol.
  • the steps of the base station generating the first communication protocol and the second communication protocol may be implemented through the following steps 6011-6013, including:
  • the base station determines multiple sample carrier frequencies, multiple sample subcarrier intervals, and multiple sample relative velocities.
  • This step can be implemented through the following steps (1) to (3), including:
  • the base station determines the carrier frequency range, and performs sampling within the carrier frequency range to obtain multiple sample carrier frequencies.
  • the base station may perform random sampling within the carrier frequency range to obtain multiple sample carrier frequencies, or may perform uniform sampling within the carrier frequency range to obtain multiple sample carrier frequencies.
  • the base station may also determine multiple subcarrier frequency ranges included in the carrier frequency range, select a carrier frequency from each subcarrier frequency range, and obtain multiple sample carrier frequencies.
  • the number of sample carrier frequencies can be set and changed as required.
  • the number of sample carrier frequencies is not specifically limited; for example, the sample carrier frequency may be 3 or 5.
  • the number of sample carrier frequencies is 3 as an example for description.
  • the three sample carrier frequencies determined by the base station are 6GHz, 30GHz, and 63GHz, respectively.
  • the base station determines multiple sample subcarrier intervals based on multiple sample carrier frequencies; one sample carrier frequency corresponds to at least one sample subcarrier interval.
  • the step of the base station determining at least one sample subcarrier interval based on the sample carrier frequency may be: the base station determines the carrier frequency from the carrier based on the sample carrier frequency. At least one sample subcarrier interval corresponding to the sample carrier frequency is determined from the correspondence between the frequency and the subcarrier interval.
  • the sample carrier frequency when the sample carrier frequency is 6GHz, the sample carrier frequency corresponds to 2 subcarrier intervals, which are 30KHz and 60KHz; when the sample carrier frequency is 30GHz, the sample carrier frequency corresponds to 3 subcarrier intervals, which are 60KHz, 120KHz, and 240KHz; when the sample carrier frequency is 63GHz, the sample carrier frequency corresponds to two sample subcarrier intervals, which are 120KHz and 240KHz, respectively.
  • the base station determines the relative speed of multiple samples.
  • the relative speeds of the multiple samples can be randomly generated by the base station or configured by the user.
  • the number of relative speeds of the sample can be set and changed as required.
  • the number of relative speeds of the sample is not specifically limited; for example, there are four relative speeds of the sample, which are 3km / h and 140km / h, respectively. , 240km / h, 500km / h.
  • the base station determines a plurality of sample first pilot distributions according to a plurality of sample carrier frequencies and a plurality of sample subcarrier intervals, and determines a plurality of sample carrier frequencies, a plurality of subcarrier intervals, and a plurality of sample relative velocities, A plurality of sample second pilot distributions.
  • the first pilot distribution includes a first distribution frequency of pilot symbols in the frequency domain, and the first distribution frequency is that the first number of REs includes one pilot symbol.
  • the second pilot distribution includes a second distribution frequency of pilot symbols in the time domain, and the second distribution frequency includes a third number of pilot symbols in the second number of REs. Accordingly, this step can be implemented by the following steps (1) and (2), including:
  • the base station determines a plurality of sample first pilot distributions according to a plurality of sample carrier frequencies and a plurality of sample subcarrier intervals.
  • the base station stores the correspondence between the carrier frequency, the subcarrier interval, and the number of pilot symbols; correspondingly, for each sample carrier frequency and the sample subcarrier interval; the base station determines the sample first according to the sample carrier frequency and the sample subcarrier interval.
  • the pilot distribution step may be: the base station obtains the sample carrier frequency corresponding to the sample subcarrier interval from the correspondence between the carrier frequency, the subcarrier interval, and the number of pilot symbols according to the sample carrier frequency and the sample subcarrier interval.
  • the first number generates a first distribution frequency based on the first number, and composes the first distribution frequency into a sample first pilot distribution.
  • the sample carrier frequency is 6GHz and the sample subcarrier interval is 30KHz
  • at least one pilot symbol is required in every 27 REs; accordingly, the sample carrier frequency of 6GHz and the sample subcarrier interval of 30KHz
  • the corresponding sample first pilot distribution is at least one pilot symbol in every 27 REs.
  • a pilot symbol is required in every 13 REs; correspondingly, the sample first pilot distribution corresponding to the sample carrier frequency of 6GHz and the sample subcarrier interval of 60KHz There is one pilot symbol in every 13 RE.
  • the sample carrier frequency when the sample carrier frequency is 30GHz and the sample subcarrier interval is 60KHz, at least one pilot symbol is required in every 20 REs. Accordingly, the sample carrier frequency corresponding to the sample carrier frequency of 30GHz and the sample subcarrier interval of 60KHz A pilot is distributed with at least one pilot symbol in every 20 REs. When the sample carrier frequency is 30GHz and the sample subcarrier interval is 120KHz, at least one pilot symbol is required in every 10 REs. Correspondingly, the sample carrier frequency corresponding to the sample carrier frequency of 30GHz and the sample subcarrier interval of 120KHz is the first pilot. The distribution is at least one pilot symbol in every 10 REs.
  • the sample carrier frequency is 30GHz and the sample subcarrier interval is 240KHz
  • at least one pilot symbol is required in every 5 REs; correspondingly, the sample carrier frequency corresponding to the sample carrier frequency of 30GHz and the sample subcarrier interval of 240KHz
  • the distribution is at least one pilot symbol in every 5 REs.
  • the sample carrier frequency is 63GHz and the sample subcarrier interval is 120KHz
  • at least one pilot symbol is required in every 11 REs.
  • a pilot is distributed with at least one pilot symbol in every 11 REs.
  • the sample carrier frequency is 63GHz and the sample subcarrier interval is 240KHz
  • at least one pilot symbol is required in every 5 REs; accordingly, the sample carrier frequency corresponding to the sample carrier frequency of 63GHz and the sample subcarrier interval of 240KHz is the first pilot
  • the distribution is at least one pilot symbol in every 5 REs.
  • frequency domain resource scheduling can be performed in units of one RB or in units of multiple RBs; one RB includes 12 subcarriers, and one subcarrier includes 14 OFDM symbols in the time domain. OFDM symbols correspond to 12 REs in the frequency domain.
  • the frequency domain resource scheduling is based on 1 RB unit, and the frequency domain resource scheduling is based on 12 RE units, the above frequency domain design is as follows:
  • the sample carrier frequency is 6GHz and the sample subcarrier interval is 30KHz
  • at least one pilot symbol is required in every 12 REs; correspondingly, the sample pilot frequency corresponding to the sample carrier frequency of 6GHz and the sample subcarrier interval of 30KHz
  • the distribution is at least one pilot symbol in every 12 REs.
  • the sample carrier frequency is 6GHz and the sample subcarrier interval is 60KHz
  • one pilot symbol is required in every 12 REs; correspondingly, the sample first pilot distribution corresponding to the sample carrier frequency of 6GHz and the sample subcarrier interval of 60KHz
  • the sample carrier frequency is 30GHz and the sample subcarrier interval is 60KHz
  • at least one pilot symbol is required in every 12 REs; correspondingly, the 30GHz sample carrier frequency and the sample first carrier corresponding to the 60KHz sample subcarrier interval
  • the distribution is at least one pilot symbol in every 12 REs.
  • the sample carrier frequency is 30GHz and the sample subcarrier interval is 120KHz
  • at least one pilot symbol is required in every 6 REs; correspondingly, the 30GHz sample carrier frequency and the sample first carrier corresponding to the 120KHz sample subcarrier interval
  • the distribution is at least one pilot symbol in every 6 REs.
  • the sample carrier frequency is 30GHz and the sample subcarrier interval is 240KHz
  • at least one pilot symbol is required in every 4 REs; correspondingly, the 30GHz sample carrier frequency and the sample first carrier corresponding to the 240KHz sample subcarrier interval
  • the distribution is at least one pilot symbol in every 4 REs.
  • the sample carrier frequency is 63GHz and the sample subcarrier interval is 120KHz
  • at least one pilot symbol is required in every 6 REs; correspondingly, the sample carrier frequency corresponding to the sample carrier frequency of 63GHz and the sample subcarrier interval of 60120KHz is the first pilot
  • the distribution is at least one pilot symbol in every 6 REs.
  • the sample carrier frequency is 63GHz and the sample subcarrier interval is 240KHz
  • at least one pilot symbol is required in every 4 REs.
  • the sample carrier frequency corresponding to the sample carrier frequency of 63GHz and the sample subcarrier interval of 240KHz is the first pilot.
  • the distribution is at least one pilot symbol in every 4 REs.
  • the frequency domain resource scheduling is based on 2 RBs
  • the frequency domain resource scheduling is based on 24 REs
  • the above frequency domain design is as follows:
  • the sample carrier frequency is 6GHz and the sample subcarrier interval is 30KHz
  • at least one pilot symbol is required in every 24 REs; correspondingly, the sample pilot frequency corresponding to the sample carrier frequency of 6GHz and the sample subcarrier interval of 30KHz
  • the distribution is at least one pilot symbol in every 24 REs.
  • the sample carrier frequency is 6GHz and the sample subcarrier interval is 60KHz
  • one pilot symbol is required in every 12 REs; correspondingly, the sample first pilot distribution corresponding to the sample carrier frequency of 6GHz and the sample subcarrier interval of 60KHz
  • the sample carrier frequency is 30GHz and the sample subcarrier interval is 60KHz
  • at least one pilot symbol is required in every 12 REs; correspondingly, the 30GHz sample carrier frequency and the sample first carrier corresponding to the 60KHz sample subcarrier interval
  • the distribution is at least one pilot symbol in every 12 REs.
  • the sample carrier frequency is 30GHz and the sample subcarrier interval is 120KHz
  • at least one pilot symbol is required in every 6 REs; correspondingly, the 30GHz sample carrier frequency and the sample first carrier corresponding to the 120KHz sample subcarrier interval
  • the distribution is at least one pilot symbol in every 6 REs.
  • the sample carrier frequency is 30GHz and the sample subcarrier interval is 240KHz
  • at least one pilot symbol is required in every 4 REs; correspondingly, the 30GHz sample carrier frequency and the sample first carrier corresponding to the 240KHz sample subcarrier interval
  • the distribution is at least one pilot symbol in every 4 REs.
  • the sample carrier frequency is 63GHz and the sample subcarrier interval is 120KHz
  • at least one pilot symbol is required in every 6 REs.
  • the sample carrier frequency corresponding to the sample carrier frequency of 63GHz and the sample subcarrier interval of 120KHz is the first pilot.
  • the distribution is at least one pilot symbol in every 6 REs.
  • the sample carrier frequency corresponding to the sample carrier frequency of 63GHz and the sample subcarrier interval of 240KHz is the first pilot.
  • the distribution is at least one pilot symbol in every 4 REs.
  • the frequency domain resource scheduling may also use more than two RB units, for example, the frequency domain resource scheduling uses three RB units or four RB units. In the embodiments of the present disclosure, this will not be illustrated one by one.
  • the base station determines the second pilot distribution of multiple samples according to multiple sample carrier frequencies, multiple subcarrier intervals, and multiple sample relative velocities.
  • the base station also stores the correspondence between carrier frequency, subcarrier interval, relative speed, and number of pilot symbols. For each sample carrier frequency, sample subcarrier interval, and sample relative speed, the base station uses the sample carrier frequency, sample subcarrier interval, and The step of determining the second pilot distribution of the sample relative speed may be: the base station determines the carrier frequency, subcarrier interval, relative speed, and number of pilot symbols according to the sample carrier frequency, the sample subcarrier interval, and the sample relative speed. A second distribution frequency corresponding to the sample carrier frequency, the sample subcarrier interval, and the relative speed of the sample is obtained in the correspondence relationship, and the second distribution frequency is used to form a sample second pilot distribution.
  • the base station generates a correspondence relationship between the carrier frequency, the subcarrier interval, the relative speed, and the number of pilot symbols in advance.
  • the step of the base station generating the correspondence between the carrier frequency, subcarrier interval, relative speed, and number of pilot symbols may be: the base station determines the maximum value based on the relative speed. Doppler frequency offset, according to the maximum Doppler frequency offset, determine the correlation time, determine the number of pilot symbols according to the correlation time, the carrier frequency and the subcarrier interval, and associate the carrier frequency, the subcarrier interval, the relative speed and Correspondence between the number of pilot symbols.
  • the number of pilots should satisfy that the pilot interval in the time domain of the pilots is not greater than the correlation time.
  • the correlation time is 25 ms.
  • the correlation time is 0.5 ms.
  • the sample carrier frequency is 6GHz and the sample relative speed is 240km / h
  • at least one pilot symbol is required every 0.32ms.
  • the correlation time is 0.32ms.
  • the sample carrier frequency is 6 GHz and the sample relative speed is 500 km / h
  • at least one pilot symbol is required every 0.15 ms. Accordingly, the correlation time is 0.15 ms.
  • the correlation time is 5 ms.
  • the correlation time is 0.1 ms.
  • the correlation time is 0.06ms.
  • the correlation time is 0.06ms.
  • the correlation time is 2.4 ms.
  • the sample carrier frequency is 63 GHz and the sample relative speed is 140 km / h
  • at least one pilot symbol is required every 0.05 ms.
  • the correlation time is 0.05 ms.
  • the sample carrier frequency is 63 GHz and the sample relative speed is 240 km / h
  • at least one pilot symbol is required every 0.03 ms.
  • the correlation time is 0.03 ms.
  • the sample carrier frequency is 63 GHz and the sample relative speed is 600 km / h
  • at least one pilot symbol is required every 0.0145 ms. Accordingly, the correlation time is 0.0145 ms.
  • the time-domain design is specifically designed as follows:
  • the pilot interval is 1 ms.
  • the pilot interval is 0.5 ms.
  • the pilot interval is 0.25 ms.
  • the pilot interval is 0.25 ms.
  • each subcarrier corresponds to one slot in the time domain.
  • One slot includes 14 OFDM symbols.
  • the sample relative speed is 3km / h, every 14 OFDM is required.
  • the second pilot distribution corresponding to a sample carrier frequency of 6 GHz, a sample subcarrier interval of 15 KHz, and a relative speed of 3 km / h is one pilot symbol in every 14 OFDM symbols. .
  • each subcarrier corresponds to 2 slots in the time domain, and 1 slot includes 14 OFDM symbols. Therefore, each subcarrier corresponds to 28 OFDM symbols, and the relative speed of the samples At 3km / h, one pilot symbol is required for every 28 OFDM symbols.
  • the second pilot distribution corresponding to the 6GHz sample carrier frequency, 30KHz sample subcarrier interval, and 3km / h sample relative speed is There is one pilot symbol in every 28 OFDM symbols.
  • each subcarrier corresponds to 4 slots in the time domain, and 1 slot includes 14 OFDM symbols. Therefore, each subcarrier corresponds to 56 OFDM symbols, and the sample relative speed At 3km / h, one pilot symbol is required for every 56 OFDM symbols.
  • the second pilot distribution corresponding to the 6GHz sample carrier frequency, the 60KHz sample subcarrier interval, and the 3km / h sample relative speed is There is one pilot symbol in every 56 OFDM symbols.
  • each subcarrier corresponds to one slot in the time domain.
  • One slot includes 14 OFDM symbols.
  • the sample relative speed is 140km / h, every 7 OFDM is required.
  • the second pilot distribution corresponding to a sample carrier frequency of 6 GHz, a sample subcarrier interval of 15 KHz, and a relative speed of 140 km / h is one pilot symbol in every 7 OFDM symbols. .
  • each subcarrier corresponds to one slot in the time domain.
  • One slot includes 14 OFDM symbols.
  • the relative speed of the sample is 140km / h, every 14 OFDM is required.
  • the second pilot distribution corresponding to the sample carrier frequency of 6GHz, the subcarrier interval of 30KHz, and the relative speed of the sample of 140km / h is 1 pilot in every 14 OFDM symbols. Frequency symbol.
  • each subcarrier corresponds to one slot in the time domain.
  • One slot includes 14 OFDM symbols.
  • the relative speed of the sample is 140km / h, each 28 OFDM is required.
  • the second pilot distribution corresponding to a sample carrier frequency of 6 GHz, a sample subcarrier interval of 60 KHz, and a relative speed of 140 km / h is one pilot symbol in every 28 OFDM symbols. .
  • each subcarrier corresponds to one slot in the time domain.
  • One slot includes 14 OFDM symbols.
  • the relative speed of the sample is 240km / h, every 14 OFDM is required.
  • the second pilot distribution corresponding to the 6GHz sample carrier frequency, the 15KHz sample subcarrier interval, and the 240km / h sample relative speed is 4 pilots per 14 OFDM symbols. Frequency symbol.
  • each subcarrier corresponds to 2 slots in the time domain. 1 slot includes 14 OFDM symbols.
  • the sample relative speed is 240km / h, each 28 OFDM is required.
  • the second pilot distribution corresponding to a sample carrier frequency of 6 GHz, a sample subcarrier interval of 30 KHz, and a relative speed of 240 km / h is 4 pilots per 28 OFDM symbols. Frequency symbol.
  • each subcarrier corresponds to 4 slots in the time domain.
  • 1 slot includes 14 OFDM symbols.
  • the relative speed of the sample is 240km / h, every 56 OFDM is required.
  • the second pilot distribution corresponding to a sample carrier frequency of 6 GHz, a sample subcarrier interval of 60 KHz, and a relative speed of 240 km / h is 4 pilots per 56 OFDM symbols. Frequency symbol.
  • each subcarrier corresponds to one slot in the time domain.
  • One slot includes 14 OFDM symbols.
  • the relative speed of the sample is 500km / h, every 14 OFDM is required.
  • the second pilot distribution corresponding to a sample carrier frequency of 6 GHz, a sample subcarrier interval of 15 KHz, and a relative speed of 500 km / h is 7 pilots per 14 OFDM symbols. Frequency symbol.
  • each subcarrier corresponds to 2 slots in the time domain.
  • One slot includes 14 OFDM symbols.
  • the relative speed of the sample is 500km / h
  • each 28 OFDM is required.
  • the second pilot distribution corresponding to a sample carrier frequency of 6 GHz, a sample subcarrier interval of 30 KHz, and a relative speed of 500 km / h is 7 pilots per 28 OFDM symbols. Frequency symbol.
  • each subcarrier corresponds to 4 slots in the time domain.
  • 1 slot includes 14 OFDM symbols.
  • the relative speed of the sample is 500km / h, every 56 OFDM is required.
  • the second pilot distribution corresponding to a sample carrier frequency of 6 GHz, a sample subcarrier interval of 60 KHz, and a relative speed of 500 km / h is 7 pilots per 56 OFDM symbols. Frequency symbol.
  • each subcarrier corresponds to one slot in the time domain.
  • One slot includes 14 OFDM symbols.
  • the sample relative speed is 3km / h, every 14 OFDM is required.
  • the second pilot distribution corresponding to a sample carrier frequency of 30 GHz, a sample subcarrier interval of 15 KHz, and a relative speed of 3 km / h is one pilot symbol in every 14 OFDM symbols. .
  • each subcarrier corresponds to 2 slots in the time domain, and 1 slot includes 14 OFDM symbols. Therefore, each subcarrier corresponds to 28 OFDM symbols, and the relative speed of the samples When it is 3km / h, one pilot symbol is required for every 28 OFDM symbols. Accordingly, the second pilot distribution corresponding to the 30GHz sample carrier frequency, 30KHz sample subcarrier interval, and 3km / h sample relative speed is There is one pilot symbol in every 28 OFDM symbols.
  • each subcarrier corresponds to 4 slots in the time domain, and 1 slot includes 14 OFDM symbols. Therefore, each subcarrier corresponds to 56 OFDM symbols, and the relative speed of the samples At 3km / h, one pilot symbol is required for every 56 OFDM symbols.
  • the second pilot distribution corresponding to the 30GHz sample carrier frequency, the 60KHz sample subcarrier interval and the 3km / h sample relative speed is There is one pilot symbol in every 56 OFDM symbols.
  • each subcarrier corresponds to 8 slots in the time domain.
  • One slot includes 14 OFDM symbols.
  • the relative speed of the sample is 3km / h, every 112 OFDM is required.
  • the second pilot distribution corresponding to a sample carrier frequency of 30 GHz, a sample subcarrier interval of 120 KHz, and a relative speed of 3 km / h is one pilot symbol per 112 OFDM symbols. .
  • each subcarrier corresponds to one slot in the time domain.
  • One slot includes 14 OFDM symbols.
  • the relative speed of the sample is 140km / h, every 14 OFDM is required.
  • the second pilot distribution corresponding to the 30GHz sample carrier frequency, 15KHz sample subcarrier interval and 140km / h sample relative speed is 7 pilots per 14 OFDM symbols. Frequency symbol.
  • each subcarrier corresponds to 2 slots in the time domain. 1 slot includes 14 OFDM symbols.
  • the sample relative speed is 140km / h, each 28 OFDM is required.
  • the second pilot distribution corresponding to a sample carrier frequency of 30 GHz, a sample subcarrier interval of 30 KHz, and a relative speed of 140 km / h is 7 pilots per 28 OFDM symbols. Frequency symbol.
  • each subcarrier corresponds to 4 slots in the time domain.
  • One slot includes 14 OFDM symbols.
  • the sample relative speed is 140km / h, every 56 OFDM is required.
  • the second pilot distribution corresponding to the 30GHz sample carrier frequency, the 60KHz sample subcarrier interval, and the 140km / h sample relative speed is 7 pilots per 56 OFDM symbols. Frequency symbol.
  • each subcarrier corresponds to 8 slots in the time domain.
  • 1 slot includes 14 OFDM symbols.
  • the sample relative speed is 140km / h, every 112 OFDM is required.
  • the second pilot distribution corresponding to a sample carrier frequency of 30 GHz, a sample subcarrier interval of 120 KHz, and a relative speed of 140 km / h is 7 pilots per 112 OFDM symbols. Frequency symbol.
  • each subcarrier corresponds to one slot in the time domain.
  • One slot includes 14 OFDM symbols.
  • the relative speed of the sample is 240km / h, every 14 OFDM is required.
  • the second pilot distribution corresponding to a sample carrier frequency of 30 GHz, a sample subcarrier interval of 15 KHz, and a relative speed of 240 km / h is 14 pilots per 14 OFDM symbols. Frequency symbol.
  • each subcarrier corresponds to 2 slots in the time domain.
  • 1 slot includes 14 OFDM symbols.
  • the sample relative speed is 240km / h
  • each 28 OFDM is required.
  • the second pilot distribution corresponding to a sample carrier frequency of 30 GHz, a sample subcarrier interval of 30 KHz, and a relative speed of 240 km / h is 14 pilots per 28 OFDM symbols. Frequency symbol.
  • each subcarrier corresponds to 4 slots in the time domain.
  • 1 slot includes 14 OFDM symbols.
  • the sample relative speed is 240km / h, every 56 OFDM is required.
  • the second pilot distribution corresponding to the 30GHz sample carrier frequency, the 60KHz sample subcarrier interval, and the 240km / h sample relative speed corresponds to 14 pilots per 56 OFDM symbols. Frequency symbol.
  • each subcarrier corresponds to 8 slots in the time domain.
  • 1 slot includes 14 OFDM symbols.
  • the sample relative speed is 240km / h, every 112 OFDM is required.
  • the second pilot distribution corresponding to a sample carrier frequency of 30 GHz, a sample subcarrier interval of 120 KHz, and a relative speed of 240 km / h is 14 pilots per 112 OFDM symbols. Frequency symbol.
  • each subcarrier corresponds to one slot in the time domain.
  • One slot includes 14 OFDM symbols.
  • the sample relative speed is 500km / h
  • each 14 OFDM is required.
  • the second pilot distribution corresponding to a 30 GHz sample carrier frequency, a 15 KHz sample subcarrier interval, and a 500 km / h sample relative speed corresponds to 14 pilots per 14 OFDM symbols. Frequency symbol.
  • each subcarrier corresponds to 2 slots in the time domain.
  • One slot includes 14 OFDM symbols.
  • the relative speed of the sample is 500km / h
  • each 28 OFDM is required.
  • the second pilot distribution corresponding to a sample carrier frequency of 30 GHz, a sample subcarrier interval of 30 KHz, and a relative speed of 500 km / h is 28 pilots per 28 OFDM symbols. Frequency symbol.
  • each subcarrier corresponds to 4 slots in the time domain. 1 slot includes 14 OFDM symbols.
  • the relative speed of the sample is 500km / h, every 56 OFDM is required.
  • the second pilot distribution corresponding to the 30GHz sample carrier frequency, the 60KHz sample subcarrier interval and the 500km / h sample relative speed is 28 pilots per 56 OFDM symbols. Frequency symbol.
  • each subcarrier corresponds to 8 slots in the time domain.
  • 1 slot includes 14 OFDM symbols.
  • the sample relative speed is 500km / h, every 112 OFDM is required.
  • the second pilot distribution corresponding to a sample carrier frequency of 30 GHz, a sample subcarrier interval of 120 KHz, and a relative speed of 500 km / h is 28 pilots per 112 OFDM symbols. Frequency symbol.
  • each subcarrier corresponds to one slot in the time domain.
  • One slot includes 14 OFDM symbols.
  • the relative speed of the sample is 3km / h, every 14 OFDM is required.
  • the second pilot distribution corresponding to a sample carrier frequency of 63 GHz, a sample subcarrier interval of 15 KHz, and a relative speed of 3 km / h is one pilot symbol in every 14 OFDM symbols. .
  • each subcarrier corresponds to 2 slots in the time domain, and 1 slot includes 14 OFDM symbols. Therefore, each subcarrier corresponds to 28 OFDM symbols, and the relative speed of the samples At 3km / h, one pilot symbol is required for every 28 OFDM symbols.
  • the second pilot distribution corresponding to the 63GHz sample carrier frequency, the 30KHz sample subcarrier interval, and the 3km / h sample relative speed is There is one pilot symbol in every 28 OFDM symbols.
  • each subcarrier corresponds to 4 slots in the time domain, and 1 slot includes 14 OFDM symbols. Therefore, each subcarrier corresponds to 56 OFDM symbols, and the relative speed of the samples At 3km / h, one pilot symbol is required for every 56 OFDM symbols.
  • the second pilot distribution corresponding to the 63GHz sample carrier frequency, the 60KHz sample subcarrier interval, and the 3km / h sample relative speed is There is one pilot symbol in every 56 OFDM symbols.
  • each subcarrier corresponds to 8 slots in the time domain, and 1 slot includes 14 OFDM symbols. Therefore, each subcarrier corresponds to 112 OFDM symbols, and the relative speed of the samples At 3km / h, one pilot symbol is required for every 112 OFDM symbols.
  • the second pilot distribution corresponding to the 63GHz sample carrier frequency, the 120KHz sample subcarrier interval, and the 3km / h sample relative speed is There is one pilot symbol in every 112 OFDM symbols.
  • each subcarrier corresponds to one slot in the time domain.
  • One slot includes 14 OFDM symbols.
  • the sample relative speed is 140km / h, every 14 OFDM is required.
  • the second pilot distribution corresponding to the 63GHz sample carrier frequency, the 15KHz sample subcarrier interval, and the 140km / h sample relative speed corresponds to 14 pilots per 14 OFDM symbols. Frequency symbol.
  • each subcarrier corresponds to 2 slots in the time domain.
  • 1 slot includes 14 OFDM symbols.
  • the sample relative speed is 140km / h, each 28 OFDM is required.
  • the second pilot distribution corresponding to the 63GHz sample carrier frequency, the 15KHz sample subcarrier interval, and the 140km / h sample relative speed corresponds to 14 pilots per 28 OFDM symbols. Frequency symbol.
  • each subcarrier corresponds to 4 slots in the time domain. 1 slot includes 14 OFDM symbols.
  • the sample relative speed is 140km / h, each 56 OFDM is required.
  • the second pilot distribution corresponding to the 63GHz sample carrier frequency, the 15KHz sample subcarrier interval, and the 140km / h sample relative speed corresponds to 14 pilots per 56 OFDM symbols. Frequency symbol.
  • each subcarrier corresponds to 8 slots in the time domain, and 1 slot includes 14 OFDM symbols. Therefore, each subcarrier corresponds to 112 OFDM symbols, and the relative speed of the samples At 3km / h, 14 pilot symbols are required for every 112 OFDM symbols.
  • the second pilot distribution corresponding to the 63GHz sample carrier frequency, the 120KHz sample subcarrier interval, and the 140km / h sample relative speed. There are 14 pilot symbols in every 112 OFDM symbols.
  • each subcarrier corresponds to one slot in the time domain.
  • One slot includes 14 OFDM symbols.
  • the relative speed of the sample is 240km / h, every 14 OFDM is required.
  • the second pilot distribution corresponding to the 63GHz sample carrier frequency, the 15KHz sample subcarrier interval, and the 240km / h sample relative speed is 14 pilots per 14 OFDM symbols. Frequency symbol.
  • each subcarrier corresponds to 2 slots in the time domain.
  • One slot includes 14 OFDM symbols.
  • the sample relative speed is 240km / h, each 28 OFDM is required.
  • the second pilot distribution corresponding to the 63GHz sample carrier frequency, the 15KHz sample subcarrier interval, and the 240km / h sample relative speed corresponds to 14 pilots per 28 OFDM symbols. Frequency symbol.
  • each subcarrier corresponds to 4 slots in the time domain.
  • 1 slot includes 14 OFDM symbols.
  • the relative speed of the sample is 240km / h, every 56 OFDM is required.
  • the second pilot distribution corresponding to the 63GHz sample carrier frequency, the 15KHz sample subcarrier interval, and the 240km / h sample relative speed corresponds to 14 pilots per 56 OFDM symbols. Frequency symbol.
  • each subcarrier corresponds to 8 slots in the time domain, and 1 slot includes 14 OFDM symbols. Therefore, each subcarrier corresponds to 112 OFDM symbols, and the relative speed of the samples At 3km / h, 14 pilot symbols are required for every 112 OFDM symbols.
  • the second pilot distribution corresponding to the 63GHz sample carrier frequency, the 120KHz sample subcarrier interval, and the 240km / h sample relative speed. There are 14 pilot symbols in every 112 OFDM symbols.
  • each subcarrier corresponds to one slot in the time domain.
  • One slot includes 14 OFDM symbols.
  • the relative speed of the sample is 500km / h, every 14 OFDM is required.
  • the second pilot distribution corresponding to the 63GHz sample carrier frequency, the 15KHz sample subcarrier interval and the 500km / h sample relative speed corresponds to 14 pilots per 14 OFDM symbols. Frequency symbol.
  • each subcarrier corresponds to one slot in the time domain.
  • One slot includes 14 OFDM symbols.
  • the relative speed of the sample is 500km / h
  • each 28 OFDM is required.
  • the second pilot distribution corresponding to a sample carrier frequency of 63 GHz, a sample subcarrier interval of 30 KHz, and a relative speed of 500 km / h is 28 pilots per 28 OFDM symbols. Frequency symbol.
  • each subcarrier corresponds to one slot in the time domain.
  • One slot includes 14 OFDM symbols.
  • the relative speed of the sample is 500km / h, every 56 OFDM is required.
  • the second pilot distribution corresponding to a sample carrier frequency of 63 GHz, a sample subcarrier interval of 60 KHz, and a relative speed of 500 km / h is 56 pilots per 56 OFDM symbols. Frequency symbol.
  • each subcarrier corresponds to 8 slots in the time domain, and 1 slot includes 14 OFDM symbols. Therefore, each subcarrier corresponds to 112 OFDM symbols, and the relative speed of the samples For 3km / h, 56 pilot symbols are required for every 112 OFDM symbols.
  • the second pilot distribution corresponding to the 63GHz sample carrier frequency, the 120KHz sample subcarrier interval, and the 240km / h sample relative speed. There are 56 pilot symbols in every 112 OFDM symbols.
  • the base station In step 6023, the base station generates a first communication protocol based on a plurality of sample carrier frequencies, a plurality of sample subcarrier intervals, and a plurality of sample first pilot distributions. Two relative speed ranges and a plurality of sample second pilot distributions to generate a second communication protocol.
  • the base station has obtained multiple sample first pilot distributions according to multiple sample carrier frequencies and multiple sample subcarrier intervals. In this step, the base station stores the correspondence between the sample carrier frequency, the sample subcarrier interval, and the sample first pilot distribution. , Adding the corresponding relationship to the first communication protocol.
  • the base station has obtained multiple sample second pilot distributions based on multiple sample carrier frequencies, multiple sample subcarrier intervals, and multiple sample relative speeds; in this step, the base station determines multiple sample relative speeds based on multiple sample relative speeds
  • the range stores the correspondence between the sample carrier frequency, the sample subcarrier interval, the sample relative speed range, and the sample second pilot distribution, and adds the correspondence to the second communication protocol.
  • steps 601-602 only need to be performed once.
  • the first communication protocol and the second communication protocol can be directly used, and it is not necessary to repeatedly obtain the first communication protocol and the second communication protocol. letter of agreement.
  • the first communication protocol and the second communication protocol may be one communication protocol or two different communication protocols.
  • the communication protocol stores a correspondence relationship between a carrier frequency, a subcarrier interval, and a first pilot distribution, and a carrier frequency, a subcarrier interval, a relative speed range, and a second Correspondence of pilot distribution.
  • step 603 the base station returns the first communication protocol and the second communication protocol to the first device.
  • the acquisition request carries the device identification of the first device.
  • the base station sends the first communication protocol and the second communication protocol to the first device according to the device identification of the first device.
  • the first communication protocol and the second communication protocol may be carried in the notification signaling, and the first communication protocol and the second communication protocol may be carried in the same notification signaling, or may be carried in two different notification letters. In the order, in the embodiments of the present disclosure, this is not specifically limited.
  • step 604 the first device receives the first communication protocol and the second communication protocol sent by the base station.
  • the first device After the first device receives the first communication protocol and the second communication protocol, the first device stores the first communication protocol and the second communication protocol, so as to facilitate subsequent information interaction with other devices based on the stored first communication protocol. With the second communication protocol, pilot symbols are determined.
  • step 605 when a first message is transmitted between the first device and the second device, the first device determines an RB that carries the first message.
  • the first device sends an allocation request to the base station, where the allocation request is used to request the base station to allocate an RB for the first device, and the allocation request carries the device identifier of the first device;
  • the base station receives the allocation request sent by the first device and is the first device Allocate at least one RB, and send the identity of the at least one RB to the first device.
  • the first device receives the identifier of the at least one RB sent by the base station, and determines an RB corresponding to the identifier of the at least one RB in the resource pool based on the identifier of the at least one RB.
  • step 606 the first device determines at least one pilot symbol in the RB carrying the first message based on the first communication protocol and the second communication protocol.
  • This step can be implemented through the following steps 6061-6063, including:
  • the first device determines a carrier frequency and a subcarrier interval of the subcarriers included in the RB, and determines a relative speed between the first device and the second device.
  • the second device may be a base station or a second terminal in a vehicle.
  • the step of the first device determining the relative speed between the first device and the second device may be: the first device determines the moving speed of the first device as between the first device and the second device Relative speed.
  • the steps of the first device determining the relative speed between the first device and the second device may be: the first device determines the moving speed and direction of the first device, and determines the second device Determine the relative speed between the first device and the second device according to the moving speed and direction of the first device, and the moving speed and direction of the second device.
  • the first device obtains, according to the carrier frequency and the subcarrier interval, the first pilot distribution of the pilot symbols in the RB in the frequency domain from the stored first communication protocol.
  • the first communication protocol A correspondence relationship between a carrier frequency, a subcarrier interval, and a first pilot distribution is stored.
  • the first device obtains the carrier frequency and subcarrier interval from the first communication protocol according to the carrier frequency: 63GHz and the subcarrier interval: 240KHz.
  • the corresponding first pilot distribution is: at least one pilot symbol in every 4 REs.
  • the first device obtains the pilot symbols in the RB from the stored second communication protocol in the time domain according to the carrier frequency, the subcarrier frequency, and the relative speed between the first device and the second device.
  • a second pilot distribution on the network, and the second communication protocol stores a correspondence relationship between a carrier frequency, a subcarrier frequency, a relative speed range, and a second pilot distribution.
  • the first device uses the carrier frequency: 63GHz, subcarrier Carrier interval: 240KHz and relative speed: 240km / h.
  • the second pilot distribution corresponding to the carrier frequency, subcarrier interval, and relative speed obtained from the second communication protocol is: one pilot symbol in every 4 OFDM symbols.
  • step 6063 the first device sets at least one pilot symbol on the RB according to the first pilot distribution and the second pilot distribution.
  • the first device directly configures at least one pilot symbol on the RB. At least one pilot symbol satisfies a first pilot distribution in a frequency domain and a second pilot distribution in a time domain.
  • the pilot symbols may be uniformly or unevenly distributed in the time domain. Similarly, the pilot symbols may be uniformly or unevenly distributed in the frequency domain.
  • pilot symbols are uniformly distributed in the time domain and uniformly distributed in the frequency domain.
  • the first pilot distribution is that there is at least one pilot symbol in every 4 REs
  • the second pilot distribution is that there is one pilot symbol in every 4 OFDM symbols. Since one RB includes 12 REs in the frequency domain, they are the first RE to the 12th RE, respectively. It includes 14 OFDM symbols in the time domain, which are the first OFDM symbol to the 14th OFDM symbol, respectively. Then, the first device sets 3 pilot symbols in the frequency domain and 4 pilot symbols in the time domain.
  • the first device can evenly select 3 REs in the frequency domain, namely the first RE, the fifth RE, and the ninth RE, or the second RE, the sixth RE, and the tenth RE, or The third RE, the seventh RE, and the eleventh RE, or the fourth RE, the eighth RE, and the twelfth RE, determine the selected RE as a pilot.
  • the first device may select the 1, 5, 9, and 13 OFDM symbols in the time domain, or select the 2, 6, 10, and 14 OFDM symbols, and determine the selected OFDM symbols as pilot symbols.
  • the 4th RE, the 8th RE, and the 12th RE are used as pilots
  • the 2, 6, 10, and 14 OFDMs are used as pilot symbols as examples.
  • the first device estimates a current channel based on at least one pilot symbol.
  • the first device may estimate the current channel based on at least one pilot symbol in the RB, or may only estimate the current channel based on at least one pilot symbol on a partial RE in the RB.
  • this step may be implemented by the following steps 6071-6073, including:
  • step 6071 the first device determines the number of symbols occupied by the current channel in the time domain.
  • the first device stores the correspondence between the channel width and the number of symbols. Accordingly, this step may be: the first device determines the number of symbols corresponding to the channel width from the correspondence between the channel width and the number of symbols according to the channel width of the current channel.
  • the first device determines multiple target REs on the RB according to the number of symbols and the number of subcarriers included in the RB.
  • the first device selects the number of OFDM symbols of the symbol in the time domain of the RB according to the number of symbols, and determines the selected OFDM symbol RE as multiple target REs in the frequency domain.
  • the selected number of OFDM symbols may be a continuous OFDM symbol or a discontinuous OFDM symbol.
  • the selection method is not specifically limited. For example, if the selected number of OFDM symbols can be consecutive OFDM symbols and the number of symbols is 3, the first device can select the 1, 2, and 3 OFDM symbols, or the 2, 4, and 6 OFDM symbols. Wait.
  • the first device selects the first, second, and third OFDM symbols, and both the first and second OFDM symbols are pilot symbols.
  • FIG. 7 the first device selects the first, second, and third OFDM symbols, and both the first and second OFDM symbols are pilot symbols.
  • the first device selects the first, second, and third OFDM symbols, and the second OFDM symbol is set as a pilot symbol, for example.
  • the first device selects the first, second, and third OFDM symbols.
  • An example will be described with an OFDM symbol, and the first, second, and third OFDM symbols are set as pilot symbols.
  • the first device estimates the current channel based on at least one pilot symbol in the plurality of target REs.
  • At least one pilot symbol is determined in the RB according to the carrier frequency, the subcarrier interval, and the relative speed. Since the carrier frequency and the relative speed are considered, the set pilot symbol and the carrier frequency and the relative speed Matching improves the accuracy of determining the pilot symbols, thereby improving the accuracy of channel estimation.
  • Fig. 10 is a flow chart showing a channel estimation method according to another exemplary embodiment.
  • the first device queries the distribution information from the base station, and the distribution information is the first pilot distribution and the second pilot distribution. Based on the first pilot distribution and the second pilot distribution, in the RB An example is determined by determining at least one pilot symbol.
  • the channel estimation method may include the following steps.
  • step 1001 when a first message is transmitted between a first device and a second device, the first device determines an RB carrying the first message.
  • This step may be the same as step 605, and details are not described herein again.
  • the first device determines a carrier frequency, a subcarrier interval, and a relative speed of a subcarrier included in the RB.
  • This step is the same as that in step 6061, and details are not described herein again.
  • the first device sends a query request to the base station, where the query request carries a carrier frequency, a subcarrier interval, and a relative speed.
  • the base station receives a query request sent by the first device, and determines a first pilot distribution in the frequency domain of the pilot symbols in the RB according to the carrier frequency and the subcarrier interval in the query request.
  • the base station stores a first communication protocol, and the base station obtains a first pilot distribution in the frequency domain of the pilot symbols in the RB from the first communication protocol according to the carrier frequency and the subcarrier interval.
  • step 1005 the base station determines a second pilot distribution of the pilot symbols in the RB in the time domain according to the carrier frequency, subcarrier interval, and relative speed in the query request.
  • the second communication protocol is stored in the base station, and the base station obtains the second pilot distribution of the pilot symbols in the RB in the time domain from the second communication protocol according to the carrier frequency, the subcarrier interval, and the relative speed.
  • step 1006 the base station returns the first pilot distribution and the second pilot distribution to the first device.
  • the query request also carries the device identification of the first device; the base station returns the first pilot distribution and the second pilot distribution to the first device according to the device identification of the first device.
  • step 1003 the first device receives the first pilot distribution and the second pilot distribution returned by the base station.
  • step 1004 the first device sets at least one pilot symbol on the RB according to the first pilot distribution and the second pilot distribution.
  • This step is the same as the step in step 6063, and details are not described herein again.
  • step 1005 the first device estimates a current channel based on at least one pilot symbol.
  • This step is the same as the step in step 607, and details are not described herein again.
  • At least one pilot symbol is determined in the RB according to the carrier frequency, the subcarrier interval, and the relative speed. Since the carrier frequency and the relative speed are considered, the set pilot symbol and the carrier frequency and the relative speed Matching improves the accuracy of determining the pilot symbols, thereby improving the accuracy of channel estimation.
  • Fig. 11 is a flow chart showing a channel estimation method according to another exemplary embodiment.
  • the distribution information of the pilot symbols returned by the base station is used as the identifier of the pilot symbols.
  • the first device directly determines at least one pilot symbol in the RB based on the identifier of the pilot symbols. Be explained.
  • the channel estimation method may include the following steps.
  • step 1101 when a first message is transmitted between a first device and a second device, the first device determines an RB carrying the first message.
  • This step may be the same as step 605, and details are not described herein again.
  • the first device determines a carrier frequency, a subcarrier interval, and a relative speed of a subcarrier included in the RB.
  • This step is the same as that in step 6061, and details are not described herein again.
  • the first device sends a configuration request to the base station, where the configuration request carries a carrier frequency, a subcarrier interval, and a relative speed between the first device and the second device.
  • the configuration request may also carry only a carrier frequency, so that the base station configures at least one pilot symbol on the RB according to the carrier frequency.
  • the base station receives a configuration request sent by the first device, and configures an identifier of at least one pilot symbol in the RB according to the carrier frequency, the subcarrier interval, and the relative speed of the first device and the second device in the configuration request. .
  • the base station determines the first pilot distribution of pilot symbols in the frequency domain according to the carrier frequency and the subcarrier interval, and determines the first pilot symbol in the time domain according to the carrier frequency, the subcarrier interval, and the relative speed.
  • Two pilot distributions According to the first pilot distribution and the second pilot distribution, at least one pilot symbol is configured in the RB to determine an identifier of the at least one pilot symbol.
  • the base station determines the first pilot distribution of the pilot symbols in the frequency domain according to the carrier frequency and the subcarrier interval, and the process of step 1004 is the same, and details are not described herein again.
  • the base station determines the second pilot distribution of the pilot symbols in the time domain according to the carrier frequency, the subcarrier interval, and the relative speed, and the process of step 705 is the same, and details are not described herein again.
  • the base station configures at least one pilot symbol in the RB according to the first pilot distribution and the second pilot distribution, determines an identifier of the at least one pilot symbol, and in step 6063, the first device according to the first pilot distribution and the second pilot distribution. Frequency distribution, at least one pilot symbol is configured in the RB, and the steps of determining the identity of the at least one pilot symbol are the same, and details are not described herein again.
  • the base station queries the plurality of first pilot distributions corresponding to the carrier frequency in the first communication protocol according to the carrier frequency, and selects from the plurality of first pilots. In the distribution, the first pilot distribution with the densest pilot symbol distribution is determined. According to the carrier frequency, a plurality of second pilot distributions corresponding to the carrier frequency are queried in the second communication protocol, and from the plurality of second pilot distributions, A second pilot distribution with the densest pilot symbol distribution is determined. The base station configures at least one pilot symbol in the RB based on the selected first pilot distribution and the selected second pilot distribution.
  • the base station can obtain that the position of the pilot symbol of the RB in the time domain is 14 OFDM symbols Any one of the OFDM symbols.
  • the base station can obtain the position of the pilot symbol of the RB in the time domain as (1, 8) or ( 2, 9) and so on.
  • the base station can obtain the position of the pilot symbol in the RB time domain as (1,5, 9,13) or (2,6,10,14) or (3,7,11,14) and so on.
  • the base station can obtain the position of the pilot symbol in the RB time domain as (1,3, 5,7,9,11,13) or (2,4,6,8,10,12,14) and so on.
  • the base station can obtain that the position of the pilot symbol of the RB in the time domain is 28 OFDM symbols. Any one of the OFDM symbols.
  • the base station can obtain that the position of the pilot symbol of the RB in the time domain is (1,15) or ( 2, 16) and so on.
  • the base station can obtain the position of the pilot symbol in the RB time domain as (1,9, 17,21) or (2,10,18,26) or (3,11,19,27) and so on.
  • the base station can obtain the position of the pilot symbol in the RB time domain as (1,5, 9,13,17,21,25) or (2,6,10,14,18,22,26) and so on.
  • the base station can obtain that the position of the pilot symbol of the RB in the time domain is 56 OFDM symbols. Any one of the OFDM symbols.
  • the base station can obtain the position of the pilot symbol of the RB in the time domain as (1, 29) or ( 2, 30) and so on.
  • the base station can obtain the position of the pilot symbol in the RB time domain as (1,17, 33,49) or (2,18,34,50) or (3,19,35,51) and so on.
  • the base station can obtain the position of the pilot symbol in the RB time domain as (1,9, 17,25,33,41,49) or (2,10,18,26,34,42,50) and so on.
  • the base station can obtain that the position of the pilot symbol of the RB in the time domain is 14 OFDM symbols. Any one of the OFDM symbols.
  • the base station can obtain the position of the pilot symbol of the RB in the time domain as (1,3,5, 7,9,11,13) or (2,4,6,8,10,12,14) and so on.
  • the base station can obtain the position of the pilot symbol in the RB time domain as (1,2, 3,4,5,6,7,8,9,10,11,12,13,14) and so on.
  • the base station can obtain the position of the pilot symbol in the RB time domain as (1,2, 3,4,5,6,7,8,9,10,11,12,13,14) and so on.
  • the base station can obtain that the position of the pilot symbol of the RB in the time domain is 28 OFDM symbols. Any one of the OFDM symbols.
  • the base station can obtain the position of the pilot symbol of the RB in the time domain as (1,5,9, 13,17,21,25) or (2,6,10,14,18,22,26) and so on.
  • the base station can obtain the position of the pilot symbol in the RB time domain as (1,3, 5,7,9,11,13,15,17,19,21,23,25,27) or (2,4,6,8,10,12,14,16,18,20,22,24, 26, 28) and so on.
  • the base station can obtain the position of the pilot symbol in the RB time domain as (1-28) .
  • the base station can obtain that the pilot symbol position of the RB in the time domain is 56 OFDM symbols. Any one of the OFDM symbols.
  • the base station can obtain the position of the pilot symbol of the RB in the time domain as (1,9,17, 25,33,41,49) or (2,10,18,26,34,42,50).
  • the base station can obtain the position of the pilot symbol in the RB time domain as (1,5, 9,13,17,21,25,29,33,37,41,45,49,53) or, (2,6,10,14,18,22,26,30,34,38,42,46 , 50, 54) and so on.
  • the base station can obtain the position of the pilot symbol in the RB time domain as every two OFDM symbols One of them is not shown here.
  • the base station can obtain that the position of the pilot symbol of the RB in the time domain is 112 OFDM symbols. Any one of the OFDM symbols.
  • the base station can obtain the position of the pilot symbol in the RB time domain as one of every 16 OFDM symbols No more examples here.
  • the base station can obtain the position of the pilot symbol in the RB time domain as every 8 OFDM symbols One of them is not shown here.
  • the base station can obtain the position of the pilot symbol in the RB time domain as every 4 OFDM symbols One of them is not shown here.
  • the base station can obtain that the position of the pilot symbol of the RB in the time domain is 14 OFDM symbols. Any one of the OFDM symbols.
  • the base station can obtain the position of the pilot symbol of the RB in the time domain as (1,2,3, 4,5,6,7,8,9,10,11,12,13,14) and so on.
  • the base station can obtain the position of the pilot symbol in the RB time domain as (1,2, 3,4,5,6,7,8,9,10,11,12,13,14) and so on.
  • the base station can obtain the position of the pilot symbol in the RB time domain as (1,2, 3,4,5,6,7,8,9,10,11,12,13,14) and so on.
  • the base station can obtain that the position of the pilot symbol of the RB in the time domain is 28 OFDM symbols. Any one of the OFDM symbols.
  • the base station can obtain the position of the pilot symbol in the RB time domain as one of every two OFDM symbols No more examples here.
  • the base station can obtain the position of the pilot symbol in the RB time domain as (1-28) Wait.
  • the base station can obtain the position of the pilot symbol in the RB time domain as (1-28) .
  • the base station can obtain that the pilot symbol position of the RB in the time domain is 56 OFDM symbols. Any one of the OFDM symbols.
  • the base station can obtain the position of the pilot symbol in the RB time domain as one of every four OFDM symbols No more examples here.
  • the base station can obtain that the position of the pilot symbol in the RB time domain is every two OFDM symbols One of them is not shown here.
  • the base station can obtain the position of the pilot symbol in the RB time domain as (1-56) Wait.
  • the base station can obtain that the position of the pilot symbol of the RB in the time domain is 112 OFDM symbols. Any one of the OFDM symbols.
  • the base station can obtain the position of the pilot symbol in the RB time domain as one of every 8 OFDM symbols No more examples here.
  • the base station can obtain the position of the pilot symbol in the RB time domain as every 4 OFDM symbols One of them is not shown here.
  • the base station can obtain the position of the pilot symbol in the RB time domain as every 2 OFDM symbols One of them is not shown here.
  • the base station may also be determined only according to the carrier frequency of 6 GHz. Accordingly, when the carrier frequency is 6 GHz, the base station may select one of the four REs in the frequency domain of the RB to set. For pilots, there are 7 pilot symbols out of 14 OFDM symbols in the time domain. For example, select the 4, 8, 12 RE in the frequency domain, and the position of the pilot symbol in the time domain is (2, 4, 6, 8, 10, 12, 14) or (1, 3, 5, 7) , 9,11,13), as shown in Figure 12. When the carrier frequency is 30GHz and 63GHz, the base station can select one of the four REs in the frequency domain of the RB to set as the pilot, and there are 14 pilot symbols in the 14 OFDM symbols in the time domain, as shown in the figure. 13 shown.
  • the base station configures at least one pilot symbol and the first device in the RB based on the selected first pilot distribution and the selected second pilot distribution.
  • the steps of configuring at least one pilot symbol and determining the identity of the at least one pilot symbol are the same, and details are not described herein again.
  • the base station determines the identifier of the at least one pilot symbol as the best matching configuration scheme according to the carrier frequency, subcarrier interval, and relative speed carried in the configuration request, thereby improving the accuracy of channel estimation.
  • the base station can improve the configuration efficiency.
  • step 1105 the base station returns an identification of the at least one pilot symbol to the first device.
  • the first device receives an identifier of at least one pilot symbol returned by the base station, and configures the target RE according to the identifier to determine at least one pilot symbol.
  • step 1107 the first device estimates the current channel according to the determined at least one pilot symbol.
  • This step is the same as the step in step 607, and details are not described herein again.
  • At least one pilot symbol is determined in the RB according to the carrier frequency, the subcarrier interval, and the relative speed. Since the carrier frequency and the relative speed are considered, the set pilot symbol and the carrier frequency and the relative speed Matching improves the accuracy of determining the pilot symbols, thereby improving the accuracy of channel estimation.
  • Fig. 14 is a block diagram of a device for channel estimation according to another exemplary embodiment.
  • the apparatus is applied to a first device, and is configured to perform the steps performed by the first device in the foregoing channel estimation method.
  • the apparatus includes:
  • a first determining module 1401, configured to determine a resource group RB carrying the first message when the first message is transmitted between the first device and a second device;
  • An estimation module 1403 is configured to estimate a current channel based on the at least one pilot symbol.
  • the second determining module 1402 is further configured to determine a first pilot distribution of the pilot symbols in the RB in the frequency domain according to the carrier frequency and the subcarrier interval. And determining a second pilot distribution of pilot symbols in the RB in the time domain according to the carrier frequency, subcarrier spacing, and the relative speed; according to the first pilot distribution and the second Pilot distribution, and at least one pilot symbol is set on the RB.
  • the second determining module 1402 is further configured to obtain the pilot symbol in the RB from the stored first communication protocol according to the carrier frequency and the subcarrier interval.
  • a first pilot distribution in the frequency domain, and a correspondence between a carrier frequency, a subcarrier interval, and a first pilot distribution is stored in the first communication protocol; and according to the carrier frequency, the subcarrier interval, and the Relative speed, the second pilot distribution in the time domain of the pilot symbols in the RB is obtained from the stored second communication protocol, and the carrier frequency, subcarrier interval, and relative speed range are stored in the second communication protocol Correspondence with the second pilot distribution.
  • the second determining module 1402 is further configured to send a query request to a base station, where the query request carries the carrier frequency, the subcarrier interval, and the relative speed, and the query request For the base station to determine a first pilot distribution of the pilot symbols in the RB in the frequency domain according to the carrier frequency and the subcarrier interval, and according to the carrier frequency, the subcarrier interval, and The relative speed determines a second pilot distribution of the pilot symbols in the RB in the time domain; and receives the first pilot distribution and the second pilot distribution returned by the base station.
  • the estimation module 1403 is further configured to determine the number of symbols occupied by the current channel in the time domain; according to the number of symbols and the number of subcarriers included in the RB, A plurality of target resource blocks RE are determined on the RB; and the current channel is estimated based on at least one pilot symbol in the plurality of target REs.
  • the apparatus further includes:
  • a first sending module configured to send an acquisition request to a base station, where the acquisition request is used to acquire the first communication protocol and the second communication protocol;
  • a first receiving module configured to receive the first communication protocol and the second communication protocol returned by the base station.
  • the second determining module 1402 is further configured to send a configuration request to a base station, where the configuration request carries the carrier frequency, the subcarrier interval, and the relative speed, and the configuration request For the base station to configure at least one pilot symbol in the RB based on the carrier frequency, the subcarrier interval, and the relative speed; receive an identifier of the at least one pilot symbol returned by the base station; based on Identification of the at least one pilot symbol, and determining the at least one pilot symbol in the RB.
  • At least one pilot symbol is determined in the RB according to the carrier frequency, the subcarrier interval, and the relative speed. Since the carrier frequency and the relative speed are considered, the set pilot symbol and the carrier frequency and the relative speed Matching improves the accuracy of determining the pilot symbols, thereby improving the accuracy of channel estimation.
  • Fig. 15 is a block diagram of a device for channel estimation according to another exemplary embodiment.
  • the apparatus is applied to a base station, and is configured to perform the steps performed by the base station in the foregoing channel estimation method.
  • the apparatus includes:
  • An allocation module 1501 configured to allocate a resource group RB carrying the first message to the first device when the first message is transmitted between the first device and the second device;
  • a third determining module 1502 is configured to determine at least one pilot in the RB according to a carrier frequency and a subcarrier interval of a subcarrier included in the RB, and a relative speed between the first device and the second device. Distribution information of frequency symbols;
  • a second sending module 1503 is configured to return distribution information of the at least one pilot symbol to the first device, where the distribution information is used by the first device to determine the at least one pilot symbol in the RB. And estimate the current channel based on the at least one pilot symbol.
  • the distribution information includes a first pilot distribution and a second pilot distribution
  • the third determining module 1502 is further configured to receive a query request sent by the first device, and the query Requesting to carry the carrier frequency, the subcarrier interval, and the relative speed; and determining a first pilot distribution of pilot symbols in the RB in the frequency domain according to the carrier frequency and the subcarrier interval; Determining a second pilot distribution of the pilot symbols in the RB in the time domain according to the carrier frequency and the relative speed.
  • the distribution information includes an identifier of a pilot symbol
  • the third determining module 1502 is further configured to receive a configuration request sent by the first device, where the configuration request carries the carrier frequency , The subcarrier interval and the relative speed; determining a first pilot distribution of the pilot symbols in the RB in the frequency domain according to the carrier frequency and the subcarrier interval; according to the carrier frequency, Determine the second pilot distribution of the pilot symbols in the RB in the time domain according to the subcarrier interval and the relative speed; and according to the first pilot distribution and the second pilot distribution, in the RB At least one pilot symbol is set thereon; determining an identity of the at least one pilot symbol.
  • At least one pilot symbol is determined in the RB according to the carrier frequency, the subcarrier interval, and the relative speed. Since the carrier frequency and the relative speed are considered, the set pilot symbol and the carrier frequency and the relative speed Matching improves the accuracy of determining the pilot symbols, thereby improving the accuracy of channel estimation.
  • Fig. 16 is a block diagram of a device for channel estimation according to another exemplary embodiment.
  • the apparatus is applied to a base station, and is configured to perform the steps performed by the base station in the foregoing channel estimation method.
  • the apparatus includes:
  • a second receiving module 1601 is configured to receive an acquisition request sent by a first device, where the acquisition request is used to acquire the first communication protocol and the second communication protocol, and the first communication protocol stores a carrier frequency, A correspondence between a carrier interval and a first pilot distribution, and the second communication protocol stores a correspondence between a carrier frequency, a subcarrier interval, a relative speed range, and a second pilot distribution;
  • a third sending module 1602 configured to return the first communication protocol and the second communication protocol to the first device, so that the first device is based on the first communication protocol and the second communication protocol Determining at least one pilot symbol in a resource group RB carrying a first message, and estimating a current channel based on the at least one pilot symbol, the first message is between the first device and a second device The transmitted message.
  • the apparatus further includes:
  • a fourth determining module configured to determine multiple sample carrier frequencies, multiple sample subcarrier intervals, and multiple sample relative velocities; and determine multiple sample first pilots based on the multiple sample carrier frequencies and multiple sample subcarrier intervals. Frequency distribution, and determining a plurality of sample second pilot distributions according to the plurality of sample carrier frequencies and the plurality of sample relative velocities;
  • a generating module configured to generate a first communication protocol based on the multiple sample carrier frequencies, the multiple sample subcarrier intervals, and the multiple sample first pilot distributions, and based on the multiple sample carrier frequencies, all The second sub-carrier interval, the relative speed ranges corresponding to the relative speeds of the multiple samples, and the second pilot distribution of the multiple samples generate a second communication protocol.
  • At least one pilot symbol is determined in the RB according to the carrier frequency, the subcarrier interval, and the relative speed. Since the carrier frequency and the relative speed are considered, the set pilot symbol and the carrier frequency and the relative speed Matching improves the accuracy of determining the pilot symbols, thereby improving the accuracy of channel estimation.
  • the channel estimation device provided in the foregoing embodiment displays the notification bar message
  • only the above-mentioned division of the functional modules is used as an example.
  • the above-mentioned functions may be allocated by different functional modules as required. That is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above.
  • the channel estimation device provided in the foregoing embodiment belongs to the same concept as the channel estimation method embodiment, and its specific implementation process is described in the method embodiment in detail, and details are not described herein again.
  • Fig. 17 is a block diagram of a channel estimation apparatus 1700 according to an exemplary embodiment.
  • the device 1700 may be a mobile phone, a computer, a digital broadcasting terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, and the like.
  • the device 1700 may include one or more of the following components: a processing component 1702, a memory 1704, a power component 1706, a multimedia component 1708, an audio component 1710, an input / output (I / O) interface 1712, a sensor component 1714, And communication components 1716.
  • the processing component 1702 generally controls the overall operation of the device 1700, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations.
  • the processing component 1702 may include one or more processors 1720 to execute instructions to complete all or part of the steps of the method described above.
  • the processing component 1702 may include one or more modules to facilitate interaction between the processing component 1702 and other components.
  • the processing component 1702 may include a multimedia module to facilitate the interaction between the multimedia component 1708 and the processing component 1702.
  • the memory 1704 is configured to store various types of data to support operation at the device 1700. Examples of such data include instructions for any application or method for operating on the device 1700, contact data, phone book data, messages, pictures, videos, and the like.
  • the memory 1704 can be implemented by any type of volatile or non-volatile storage devices or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), Programming read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read-only memory
  • EPROM Programming read-only memory
  • PROM programmable read-only memory
  • ROM read-only memory
  • magnetic memory flash memory
  • flash memory magnetic disk or optical disk.
  • the power component 1706 provides power to various components of the device 1700.
  • the power component 1706 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the device 1700.
  • the multimedia component 1708 includes a screen that provides an output interface between the device 1700 and a user.
  • the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user.
  • the touch panel includes one or more touch sensors to sense touch, swipe, and gestures on the touch panel. The touch sensor may not only sense a boundary of a touch or slide action, but also detect duration and pressure related to the touch or slide operation.
  • the multimedia component 1708 includes a front camera and / or a rear camera. When the device 1700 is in an operation mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.
  • the audio component 1710 is configured to output and / or input audio signals.
  • the audio component 1710 includes a microphone (MIC) that is configured to receive an external audio signal when the device 1700 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode.
  • the received audio signal may be further stored in the memory 1704 or transmitted via the communication component 1716.
  • the audio component 1710 further includes a speaker for outputting audio signals.
  • the I / O interface 1712 provides an interface between the processing component 1702 and a peripheral interface module.
  • the peripheral interface module may be a keyboard, a click wheel, a button, or the like. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.
  • the sensor assembly 1714 includes one or more sensors for providing status evaluation of various aspects of the device 1700.
  • the sensor component 1714 can detect the on / off state of the device 1700 and the relative positioning of the components.
  • the component is the display and keypad of the device 1700.
  • the sensor component 1714 can also detect the change in the position of the device 1700 or a component of the device 1700 , The presence or absence of the user's contact with the device 1700, the orientation or acceleration / deceleration of the device 1700, and the temperature change of the device 1700.
  • the sensor assembly 1714 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact.
  • the sensor component 1714 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications.
  • the sensor component 1714 may further include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
  • the communication component 1716 is configured to facilitate wired or wireless communication between the device 1700 and other devices.
  • the device 1700 can access a wireless network based on a communication standard, such as WiFi, 2G, or 3G, or a combination thereof.
  • the communication component 1716 receives a broadcast signal or a broadcast-related message from an external broadcast management system via a broadcast channel.
  • the communication component 1716 further includes a near field communication (NFC) module to facilitate short-range communication.
  • the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
  • RFID radio frequency identification
  • IrDA infrared data association
  • UWB ultra wideband
  • Bluetooth Bluetooth
  • the apparatus 1700 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable A gate array (FPGA), controller, microcontroller, microprocessor, or other electronic component implementation is used to perform the channel estimation method described above.
  • ASICs application specific integrated circuits
  • DSPs digital signal processors
  • DSPDs digital signal processing devices
  • PLDs programmable logic devices
  • FPGA field programmable A gate array
  • controller microcontroller, microprocessor, or other electronic component implementation is used to perform the channel estimation method described above.
  • a non-transitory computer-readable storage medium including instructions may be executed by the processor 1720 of the device 1700 to complete the foregoing method.
  • the non-transitory computer-readable storage medium may be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
  • FIG. 18 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • the base station 1800 may have a large difference due to different configurations or performance, and may include one or more processors (central processing units) (CPU) 1801 and one Or more than one memory 1802, wherein the memory 1802 stores at least one instruction, and the at least one instruction is loaded and executed by the processor 1801 to implement the methods provided by the foregoing method embodiments.
  • the base station may also have components such as a wired or wireless network interface, a keyboard, and an input-output interface for input and output.
  • the base station may also include other components for implementing device functions, and details are not described herein.

Landscapes

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

Abstract

本公开提供了一种信道估计方法、装置、设备、基站及存储介质，属于无线通信技术领域。所述方法应用于第一设备，所述方法包括：当所述第一设备与第二设备之间传输第一消息时，确定承载所述第一消息的资源组RB；根据所述RB包括的子载波的载波频率和子载波间隔，以及，所述第一设备与所述第二设备之间的相对速度，在所述RB中确定至少一个导频符号；基于所述至少一个导频符号，对当前信道进行估计。在本公开实施例中，根据载波频率、子载波间隔和相对速度，在RB中确定至少一个导频符号，由于考虑了载波频率和相对速度，因此设置出的导频符号与载波频率和相对速度匹配，提高了确定出导频符号的准确性，进而提高了信道估计的准确性。

Description

信道估计方法、装置、设备、基站及存储介质 技术领域
本公开涉及无线通信技术领域，尤其涉及一种信道估计方法、装置、设备、基站及存储介质。
背景技术
随着无线通信技术的发展，V2X(Vehicle to Everything，车用无线通信技术)演进成了基于4G(the 4th Generation communication system，第四代通信系统)/5G(the 5th Generation communication system，第五代通信系统)等蜂窝网通信技术的C(Cellular，蜂窝)-V2X。其中，C-V2X包括两种通信接口，一种是车与目标对象(例如，车、人或者路等)之间的短距离直接通信接口，另一种是实现长距离和更大范围的蜂窝通信接口。短距离直接通信接口的通信标准制定的是以D2D(Device to Device，设备与设备间通信技术)为基础，采用的是广播式的通信方式，由当前车辆的第一终端将广播信息承载在RB(Resource Block资源块)上，通过该RB向周围的多个车辆的第二终端广播该广播信息。而该RB上有导频符号，因此，第一终端可以利用该导频符号进行信道估计。
目前，固定子载波间隔为15KHz，调度以子帧为单位，一个子帧长度为1ms，一个子帧包括14个OFDM(Orthogonal Frequency Division Multiplexing，即正交频分复用技术)符号，导频符号占用其中四个OFDM符号，分别为第3个OFDM符号，第6个OFDM符号，第9个OFDM符号和第12个OFDM符号。第一终端利用四个导频符号进行信道估计。
然而，根据上述进行信道估计的导频符号的导频密度，信道的相关时间为ms级，才能得到准确的信道估计值，而V2R一个重要的应用场景是高速，此时信道的相关时间为μs级，信道相关时间较低，如果还以上述方法进行信道估计其结果将极不准确。
发明内容
本公开提供一种信道估计方法、装置、设备、基站及存储介质，从而提高 了信道估计的准确性，所述技术方案如下：
根据本公开实施例的第一方面，提供一种信道估计方法，所述方法应用于第一设备，所述方法包括：
当所述第一设备与第二设备之间传输第一消息时，确定承载所述第一消息的资源组RB；
根据所述RB包括的子载波的载波频率和子载波间隔，以及，所述第一设备与所述第二设备之间的相对速度，在所述RB中确定至少一个导频符号；
基于所述至少一个导频符号，对当前信道进行估计。
在一个可能的实现方式中，所述根据所述RB包括的子载波的载波频率和子载波间隔，以及，所述第一设备与所述第二设备之间的相对速度，在所述RB中确定至少一个导频符号，包括：
根据所述载波频率和所述子载波间隔，确定所述RB中的导频符号在频域上的第一导频分布，以及根据所述载波频率、子载波间隔和所述相对速度，确定所述RB中的导频符号在时域上的第二导频分布；
根据所述第一导频分布和所述第二导频分布，在所述RB上设置至少一个导频符号。
在一个可能的实现方式中，所述根据所述载波频率和所述子载波间隔，确定所述RB中的导频符号在频域上的第一导频分布，以及根据所述载波频率、子载波间隔和所述相对速度，确定所述RB中的导频符号在时域上的第二导频分布，包括：
根据所述载波频率和所述子载波间隔，从已存储的第一通信协议中获取所述RB中的导频符号在频域上的第一导频分布，所述第一通信协议中存储载波频率、子载波间隔和第一导频分布的对应关系；以及，
根据所述载波频率、所述子载波间隔和所述相对速度，从已存储的第二通信协议中获取所述RB中的导频符号在时域上的第二导频分布，所述第二通信协议中存储载波频率、子载波间隔、相对速度范围和第二导频分布的对应关系。
在一个可能的实现方式中，所述根据所述载波频率和所述子载波间隔，确定所述RB中的导频符号在频域上的第一导频分布，以及根据所述载波频率和所述相对速度，确定所述RB中的导频符号在时域上的第二导频分布，包括：
向基站发送查询请求，所述查询请求携带所述载波频率、所述子载波间隔 和所述相对速度，所述查询请求用于所述基站根据所述载波频率和所述子载波间隔，确定所述RB中的导频符号在频域上的第一导频分布，以及根据所述载波频率、所述子载波间隔和所述相对速度，确定所述RB中的导频符号在时域上的第二导频分布；
接收所述基站返回的所述第一导频分布和所述第二导频分布。
在一个可能的实现方式中，所述基于所述至少一个导频符号，对当前信道进行估计，包括：
确定所述当前信道在时域上所占用的符号数目；
根据所述符号数目和所述RB包括的子载波数目，在所述RB上确定多个目标资源块RE；
基于所述多个目标RE中的至少一个导频符号，对所述当前信道进行估计。
在一个可能的实现方式中，所述根据所述载波频率和所述子载波间隔，从已存储的第一通信协议中获取所述RB中的导频符号在频域上的第一导频分布之前，所述方法还包括：
向基站发送获取请求，所述获取请求用于获取所述第一通信协议和所述第二通信协议；
接收所述基站返回的所述第一通信协议和所述第二通信协议。
在一个可能的实现方式中，所述根据所述RB包括的子载波的载波频率和子载波间隔，以及，所述第一设备与所述第二设备之间的相对速度，在所述RB中确定至少一个导频符号，包括：
向基站发送配置请求，所述配置请求携带所述载波频率、所述子载波间隔和所述相对速度，所述配置请求用于所述基站基于所述载波频率、所述子载波间隔和所述相对速度在所述RB中配置至少一个导频符号；
接收所述基站返回的所述至少一个导频符号的标识；
基于所述至少一个导频符号的标识，在所述RB中确定所述至少一个导频符号。
根据本公开实施例的第二方面，提供一种一种信道估计方法，所述方法应用于基站，所述方法包括：
当第一设备与第二设备之间传输第一消息时，为所述第一设备分配承载所 述第一消息的资源组RB；
根据所述RB包括的子载波的载波频率和子载波间隔，以及所述第一设备与所述第二设备之间的相对速度，在所述RB中确定至少一个导频符号的分布信息；
向所述第一设备返回所述至少一个导频符号的分布信息，所述分布信息用于所述第一设备在所述RB中确定所述至少一个导频符号，并基于所述至少一个导频符号，对当前信道进行估计。
在一个可能的实现方式中，所述分布信息包括第一导频分布和第二导频分布，所述根据所述RB包括的子载波的载波频率和子载波间隔，以及所述第一设备与所述第二设备之间的相对速度，在所述RB中确定至少一个导频符号的分布信息，包括：
接收所述第一设备发送的查询请求，所述查询请求携带所述载波频率、所述子载波间隔和所述相对速度；
根据所述载波频率和所述子载波间隔，确定所述RB中的导频符号在频域上的第一导频分布；
根据所述载波频率和所述相对速度，确定所述RB中的导频符号在时域上的第二导频分布。
在一个可能的实现方式中，所述分布信息包括导频符号的标识，所述根据所述RB包括的子载波的载波频率和子载波间隔，以及所述第一设备与所述第二设备之间的相对速度，在所述RB中确定至少一个导频符号的分布信息，包括：
接收所述第一设备发送的配置请求，所述配置请求携带所述载波频率、所述子载波间隔和所述相对速度；
根据所述载波频率和所述子载波间隔，确定所述RB中的导频符号在频域上的第一导频分布；
根据所述载波频率、子载波间隔和所述相对速度，确定所述RB中的导频符号在时域上的第二导频分布；
根据所述第一导频分布和所述第二导频分布，在所述RB上设置至少一个导频符号；
确定所述至少一个导频符号的标识。
根据本公开实施例的第三方面，提供一种一种信道估计方法，所述方法应用于基站，所述方法包括：
接收第一设备发送的获取请求，所述获取请求用于获取所述第一通信协议和所述第二通信协议，所述第一通信协议中存储载波频率、子载波间隔和第一导频分布的对应关系，所述第二通信协议中存储载波频率、子载波间隔、相对速度范围和第二导频分布的对应关系；
向所述第一设备返回所述第一通信协议和所述第二通信协议，以使所述第一设备基于所述第一通信协议和所述第二通信协议在承载第一消息的资源组RB中确定至少一个导频符号，并基于所述至少一个导频符号，对当前信道进行估计，所述第一消息为所述第一设备与第二设备之间传输的消息。
在一个可能的实现方式中，所述方法还包括：
确定多个样本载波频率、多个样本子载波间隔以及多个样本相对速度；
根据所述多个样本载波频率和多个样本子载波间隔，确定多个样本第一导频分布，以及根据所述多个样本载波频率和所述多个样本相对速度，确定多个样本第二导频分布；
基于所述多个样本载波频率、所述多个样本子载波间隔和所述多个样本第一导频分布生成第一通信协议，以及基于所述多个样本载波频率、所述样本子载波间隔、所述多个样本相对速度对应的多个相对速度范围和所述多个样本第二导频分布，生成第二通信协议。
根据本公开实施例的第四方面，提供一种信道估计装置，所述装置应用于第一设备，所述装置包括：
第一确定模块，用于当所述第一设备与第二设备之间传输第一消息时，确定承载所述第一消息的资源组RB；
第二确定模块，用于根据所述RB包括的子载波的载波频率和子载波间隔，以及，所述第一设备与所述第二设备之间的相对速度，在所述RB中确定至少一个导频符号；
估计模块，用于基于所述至少一个导频符号，对当前信道进行估计。
在一个可能的实现方式中，所述第二确定模块，还用于根据所述载波频率 和所述子载波间隔，确定所述RB中的导频符号在频域上的第一导频分布，以及根据所述载波频率、子载波间隔和所述相对速度，确定所述RB中的导频符号在时域上的第二导频分布；根据所述第一导频分布和所述第二导频分布，在所述RB上设置至少一个导频符号。
在一个可能的实现方式中，所述第二确定模块，还用于根据所述载波频率和所述子载波间隔，从已存储的第一通信协议中获取所述RB中的导频符号在频域上的第一导频分布，所述第一通信协议中存储载波频率、子载波间隔和第一导频分布的对应关系；以及，根据所述载波频率、所述子载波间隔和所述相对速度，从已存储的第二通信协议中获取所述RB中的导频符号在时域上的第二导频分布，所述第二通信协议中存储载波频率、子载波间隔、相对速度范围和第二导频分布的对应关系。
在一个可能的实现方式中，所述第二确定模块，还用于向基站发送查询请求，所述查询请求携带所述载波频率、所述子载波间隔和所述相对速度，所述查询请求用于所述基站根据所述载波频率和所述子载波间隔，确定所述RB中的导频符号在频域上的第一导频分布，以及根据所述载波频率、所述子载波间隔和所述相对速度，确定所述RB中的导频符号在时域上的第二导频分布；接收所述基站返回的所述第一导频分布和所述第二导频分布。
在一个可能的实现方式中，所述估计模块，还用于确定所述当前信道在时域上所占用的符号数目；根据所述符号数目和所述RB包括的子载波数目，在所述RB上确定多个目标资源块RE；基于所述多个目标RE中的至少一个导频符号，对所述当前信道进行估计。
在一个可能的实现方式中，所述装置还包括：
第一发送模块，用于向基站发送获取请求，所述获取请求用于获取所述第一通信协议和所述第二通信协议；
第一接收模块，用于接收所述基站返回的所述第一通信协议和所述第二通信协议。
在一个可能的实现方式中，所述第二确定模块，还用于向基站发送配置请求，所述配置请求携带所述载波频率、所述子载波间隔和所述相对速度，所述配置请求用于所述基站基于所述载波频率、所述子载波间隔和所述相对速度在所述RB中配置至少一个导频符号；接收所述基站返回的所述至少一个导频符 号的标识；基于所述至少一个导频符号的标识，在所述RB中确定所述至少一个导频符号。
根据本公开实施例的第五方面，提供一种信道估计的装置，所述装置应用于基站，所述装置包括：
分配模块，用于当第一设备与第二设备之间传输第一消息时，为所述第一设备分配承载所述第一消息的资源组RB；
第三确定模块，用于根据所述RB包括的子载波的载波频率和子载波间隔，以及所述第一设备与所述第二设备之间的相对速度，在所述RB中确定至少一个导频符号的分布信息；
第二发送模块，用于向所述第一设备返回所述至少一个导频符号的分布信息，所述分布信息用于所述第一设备在所述RB中确定所述至少一个导频符号，并基于所述至少一个导频符号，对当前信道进行估计。
在一个可能的实现方式中，所述分布信息包括第一导频分布和第二导频分布，所述第三确定模块，还用于接收所述第一设备发送的查询请求，所述查询请求携带所述载波频率、所述子载波间隔和所述相对速度；根据所述载波频率和所述子载波间隔，确定所述RB中的导频符号在频域上的第一导频分布；根据所述载波频率和所述相对速度，确定所述RB中的导频符号在时域上的第二导频分布。
在一个可能的实现方式中，所述分布信息包括导频符号的标识，所述第三确定模块，还用于接收所述第一设备发送的配置请求，所述配置请求携带所述载波频率、所述子载波间隔和所述相对速度；根据所述载波频率和所述子载波间隔，确定所述RB中的导频符号在频域上的第一导频分布；根据所述载波频率、子载波间隔和所述相对速度，确定所述RB中的导频符号在时域上的第二导频分布；根据所述第一导频分布和所述第二导频分布，在所述RB上设置至少一个导频符号；确定所述至少一个导频符号的标识。
根据本公开实施例的第六方面，提供一种信道估计的装置，所述装置应用于基站，所述装置包括：
第二接收模块，用于接收第一设备发送的获取请求，所述获取请求用于获 取所述第一通信协议和所述第二通信协议，所述第一通信协议中存储载波频率、子载波间隔和第一导频分布的对应关系，所述第二通信协议中存储载波频率、子载波间隔、相对速度范围和第二导频分布的对应关系；
第三发送模块，用于向所述第一设备返回所述第一通信协议和所述第二通信协议，以使所述第一设备基于所述第一通信协议和所述第二通信协议在承载第一消息的资源组RB中确定至少一个导频符号，并基于所述至少一个导频符号，对当前信道进行估计，所述第一消息为所述第一设备与第二设备之间传输的消息。
在一个可能的实现方式中，所述装置还包括：
第四确定模块，用于确定多个样本载波频率、多个样本子载波间隔以及多个样本相对速度；根据所述多个样本载波频率和多个样本子载波间隔，确定多个样本第一导频分布，以及根据所述多个样本载波频率和所述多个样本相对速度，确定多个样本第二导频分布；
生成模块，用于基于所述多个样本载波频率、所述多个样本子载波间隔和所述多个样本第一导频分布生成第一通信协议，以及基于所述多个样本载波频率、所述样本子载波间隔、所述多个样本相对速度对应的多个相对速度范围和所述多个样本第二导频分布，生成第二通信协议。
根据本公开实施例的第七方面，提供一种设备，包括：
处理器；
用于存储处理器可执行指令的存储器；
其中，所述处理器被配置为：
当第一设备与第二设备之间传输第一消息时，确定承载所述第一消息的资源组RB；
根据所述RB包括的子载波的载波频率和子载波间隔，以及，所述第一设备与所述第二设备之间的相对速度，在所述RB中确定至少一个导频符号；
基于所述至少一个导频符号，对当前信道进行估计。
根据本公开实施例的第八方面，提供一种基站，包括：
处理器；
用于存储处理器可执行指令的存储器；
其中，所述处理器被配置为：
当第一设备与第二设备之间传输第一消息时，为所述第一设备分配承载所述第一消息的资源组RB；
根据所述RB包括的子载波的载波频率和子载波间隔，以及所述第一设备与所述第二设备之间的相对速度，在所述RB中确定至少一个导频符号的分布信息；
向所述第一设备返回所述至少一个导频符号的分布信息，所述分布信息用于所述第一设备在所述RB中确定所述至少一个导频符号，并基于所述至少一个导频符号，对当前信道进行估计。
根据本公开实施例的第九方面，提供一种基站，包括：
处理器；
用于存储处理器可执行指令的存储器；
其中，所述处理器被配置为：
接收第一设备发送的获取请求，所述获取请求用于获取所述第一通信协议和所述第二通信协议，所述第一通信协议中存储载波频率、子载波间隔和第一导频分布的对应关系，所述第二通信协议中存储载波频率、子载波间隔、相对速度范围和第二导频分布的对应关系；
向所述第一设备返回所述第一通信协议和所述第二通信协议，以使所述第一设备基于所述第一通信协议和所述第二通信协议在承载第一消息的资源组RB中确定至少一个导频符号，并基于所述至少一个导频符号，对当前信道进行估计，所述第一消息为所述第一设备与第二设备之间传输的消息。
根据本公开实施例的第十方面，提供一种计算机可读存储介质，所述计算机可读存储介质上存储有指令，所述指令被处理器执行以完成第一方面任一项所述的信道估计方法。
根据本公开实施例的第十一方面，提供一种计算机可读存储介质，所述计算机可读存储介质上存储有指令，所述指令被处理器执行以完成权第二方面任 一项所述的信道估计方法。
根据本公开实施例的第十二方面，提供一种计算机可读存储介质，其特征在于，所述计算机可读存储介质上存储有指令，所述指令被处理器执行以完成第三方面任一项所述的信道估计方法。
在本公开实施例中，根据载波频率、子载波间隔和相对速度，在RB中确定至少一个导频符号，由于考虑了载波频率和相对速度，因此设置出的导频符号与载波频率和相对速度匹配，提高了确定出导频符号的准确性，进而提高了信道估计的准确性。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本公开。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本公开的实施例，并与说明书一起用于解释本公开的原理。
图1是根据一示例性实施例示出的一种信道估计系统架构图；
图2是根据一示例性实施例示出的一种RB的示意图；
图3是根据一示例性实施例示出的一种信道估计方法的流程图；
图4是根据一示例性实施例示出的一种信道估计方法的流程图；
图5是根据一示例性实施例示出的一种信道估计方法的流程图；
图6是根据一示例性实施例示出的一种信道估计方法的流程图；
图7是根据一示例性实施例示出的一种在RB中设置导频符号的示意图；
图8是根据一示例性实施例示出的一种在RB中设置导频符号的示意图；
图9是根据一示例性实施例示出的一种在RB中设置导频符号的示意图；
图10是根据一示例性实施例示出的另一种信道估计方法的流程图；
图11是根据一示例性实施例示出的另一种信道估计方法的流程图；
图12是根据一示例性实施例示出的一种在RB中设置导频符号的示意图；
图13是根据一示例性实施例示出的一种在RB中设置导频符号的示意图；
图14是根据一示例性实施例示出的一种信道估计装置的框图；
图15是根据一示例性实施例示出的一种信道估计装置的框图；
图16是根据一示例性实施例示出的一种信道估计装置的框图；
图17是根据一示例性实施例示出的一种设备的框图；
图18是根据一示例性实施例示出的一种基站的框图。
具体实施方式
为使本公开的目的、技术方案和优点更加清楚，下面将结合附图对本公开实施方式作进一步地详细描述。
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本公开相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本公开的一些方面相一致的装置和方法的例子。
图1是根据本公开部分示例性实施例示出的一种信道估计方法所涉及的系统架构的示意图。该系统架构包括：第一设备110和第二设备120。第一设备110和第二设备120之间可以通过短距离通信模块连接，也可以通过蜂窝通信模块连接。该短距离通信模块可以为D2D通信模块，该蜂窝通信模块可以为4G或者5G通信模块。第一设备110可以是第一终端，第一终端可以为手机终端或者车载终端，该车载终端可以为任一交通工具中的终端，例如，该车载终端可以为汽车中的终端、火车中的终端或者轮船中的终端等。第二设备120可以为第二终端或者基站。同样，第二终端可以为手机终端或者车载终端。
需要说明的一点是，当第二设备120为第二终端时，该系统架构中还包括基站130，第一设备110与基站130通过蜂窝通信模块连接。在图1中以第二设备120为第二终端为例进行说明。
需要说明的另一点是，该系统架构可以为V2X系统或者C-V2X系统。
在第一设备110与第二设备120之间传输第一消息时，需要将第一消息承载在RB中，其中，RB在频域上有12个子载波，在时域上每个子载波对应14个OFDM符号。1个子载波在时域上的一个OFDM符号相当于1个RE，也即1个RB包括168个RE(Resource Element，资源元素)。其中RE在频域上表示为子载波，在时域上表示为OFDM符号。如图2所示，图2为一个RB的结构示意图。
由于第一设备110和第二设备120之间的移动传播环境的多样化，即第一设备110和第二设备120之间传输的第一消息在传播过程中遇到的建筑物，树木，起伏地形不同，因此不同移动传播环境下的rms(均方差根)时延扩展不同，进而导致信道的相关带宽不同。因此在RB的频域上的导频结构设计上要考虑移动传播环境中多径的分布，载波频率以及子载波间隔，因此，在频域上决定导频的位置时，需考虑相关带宽，相关带宽的计算公式为：若包络相关系数为0.5时，相关带宽为1/(2*pi*rms),若相关系数为0.9，相关带宽为1/(50*rms时延扩展)。其中rms的时延扩展于载波频率及信道传播环境有关，一般通过测量统计得出；。由于第一设备110和第二设备120具备高速运动的特性，因此在RB的时域上设计需要考虑信道的相关时间，对于在时域上决定导频的位置时，需要考虑相关时间，相关时间的计算公式为：0.423/fd，其中fd为最大多普勒频偏，导频在时域上的间隔要小于等于相关时间。
图3是根据一示例性实施例示出的一种信道估计方法的流程图。该方法应用于第一设备，如图3所示，该信道估计方法可以包括以下步骤。
在步骤301中，当所述第一设备与第二设备之间传输第一消息时，确定承载所述第一消息的资源组RB；
在步骤302中，根据所述RB包括的子载波的载波频率和子载波间隔，以及，所述第一设备与所述第二设备之间的相对速度，在所述RB中确定至少一个导频符号；
在步骤303中，基于所述至少一个导频符号，对当前信道进行估计。
在一个可能的实现方式中，所述根据所述RB包括的子载波的载波频率和子载波间隔，以及，所述第一设备与所述第二设备之间的相对速度，在所述RB中确定至少一个导频符号，包括：
根据所述载波频率和所述子载波间隔，确定所述RB中的导频符号在频域上的第一导频分布，以及根据所述载波频率、子载波间隔和所述相对速度，确定所述RB中的导频符号在时域上的第二导频分布；
根据所述第一导频分布和所述第二导频分布，在所述RB上设置至少一个导频符号。
在另一个可能的实现方式中，所述根据所述载波频率和所述子载波间隔， 确定所述RB中的导频符号在频域上的第一导频分布，以及根据所述载波频率、子载波间隔和所述相对速度，确定所述RB中的导频符号在时域上的第二导频分布，包括：
根据所述载波频率和所述子载波间隔，从已存储的第一通信协议中获取所述RB中的导频符号在频域上的第一导频分布，所述第一通信协议中存储载波频率、子载波间隔和第一导频分布的对应关系；以及，
根据所述载波频率、所述子载波间隔和所述相对速度，从已存储的第二通信协议中获取所述RB中的导频符号在时域上的第二导频分布，所述第二通信协议中存储载波频率、子载波间隔、相对速度范围和第二导频分布的对应关系。
在另一个可能的实现方式中，所述根据所述载波频率和所述子载波间隔，确定所述RB中的导频符号在频域上的第一导频分布，以及根据所述载波频率和所述相对速度，确定所述RB中的导频符号在时域上的第二导频分布，包括：
向基站发送查询请求，所述查询请求携带所述载波频率、所述子载波间隔和所述相对速度，所述查询请求用于所述基站根据所述载波频率和所述子载波间隔，确定所述RB中的导频符号在频域上的第一导频分布，以及根据所述载波频率、所述子载波间隔和所述相对速度，确定所述RB中的导频符号在时域上的第二导频分布；
接收所述基站返回的所述第一导频分布和所述第二导频分布。
在另一个可能的实现方式中，所述基于所述至少一个导频符号，对当前信道进行估计，包括：
确定所述当前信道在时域上所占用的符号数目；
根据所述符号数目和所述RB包括的子载波数目，在所述RB上确定多个目标资源块RE；
基于所述多个目标RE中的至少一个导频符号，对所述当前信道进行估计。
在另一个可能的实现方式中，所述根据所述载波频率和所述子载波间隔，从已存储的第一通信协议中获取所述RB中的导频符号在频域上的第一导频分布之前，所述方法还包括：
向基站发送获取请求，所述获取请求用于获取所述第一通信协议和所述第二通信协议；
接收所述基站返回的所述第一通信协议和所述第二通信协议。
在另一个可能的实现方式中，所述根据所述RB包括的子载波的载波频率和子载波间隔，以及，所述第一设备与所述第二设备之间的相对速度，在所述RB中确定至少一个导频符号，包括：
向基站发送配置请求，所述配置请求携带所述载波频率、所述子载波间隔和所述相对速度，所述配置请求用于所述基站基于所述载波频率、所述子载波间隔和所述相对速度在所述RB中配置至少一个导频符号；
接收所述基站返回的所述至少一个导频符号的标识；
基于所述至少一个导频符号的标识，在所述RB中确定所述至少一个导频符号。
在本公开实施例中，第一设备根据载波频率、子载波间隔和相对速度，在RB中确定至少一个导频符号，由于考虑了载波频率和相对速度，因此设置出的导频符号与载波频率和相对速度匹配，提高了确定出导频符号的准确性，进而提高了信道估计的准确性。
图4是根据一示例性实施例示出的一种信道估计方法的流程图。该方法应用于基站，如图4所示，该信道估计方法可以包括以下步骤。
在步骤401中，当第一设备与第二设备之间传输第一消息时，为所述第一设备分配承载所述第一消息的资源组RB；
在步骤402中，根据所述RB包括的子载波的载波频率和子载波间隔，以及所述第一设备与所述第二设备之间的相对速度，在所述RB中确定至少一个导频符号的分布信息；
在步骤402中，向所述第一设备返回所述至少一个导频符号的分布信息，所述分布信息用于所述第一设备在所述RB中确定所述至少一个导频符号，并基于所述至少一个导频符号，对当前信道进行估计。
在一个可能的实现方式中，所述分布信息包括第一导频分布和第二导频分布，所述根据所述RB包括的子载波的载波频率和子载波间隔，以及所述第一设备与所述第二设备之间的相对速度，在所述RB中确定至少一个导频符号的分布信息，包括：
接收所述第一设备发送的查询请求，所述查询请求携带所述载波频率、所述子载波间隔和所述相对速度；
根据所述载波频率和所述子载波间隔，确定所述RB中的导频符号在频域上的第一导频分布；
根据所述载波频率和所述相对速度，确定所述RB中的导频符号在时域上的第二导频分布。
在另一个可能的实现方式中，所述分布信息包括导频符号的标识，所述根据所述RB包括的子载波的载波频率和子载波间隔，以及所述第一设备与所述第二设备之间的相对速度，在所述RB中确定至少一个导频符号的分布信息，包括：
接收所述第一设备发送的配置请求，所述配置请求携带所述载波频率、所述子载波间隔和所述相对速度；
根据所述载波频率和所述子载波间隔，确定所述RB中的导频符号在频域上的第一导频分布；
根据所述载波频率、子载波间隔和所述相对速度，确定所述RB中的导频符号在时域上的第二导频分布；
根据所述第一导频分布和所述第二导频分布，在所述RB上设置至少一个导频符号；
确定所述至少一个导频符号的标识。
在本公开实施例中，根据载波频率、子载波间隔和相对速度，在RB中确定至少一个导频符号，由于考虑了载波频率和相对速度，因此设置出的导频符号与载波频率和相对速度匹配，提高了确定出导频符号的准确性，进而提高了信道估计的准确性。
图5是根据一示例性实施例示出的一种信道估计方法的流程图。该方法应用于基站，如图5所示，该信道估计方法可以包括以下步骤。
在步骤501中，接收第一设备发送的获取请求，所述获取请求用于获取所述第一通信协议和所述第二通信协议，所述第一通信协议中存储载波频率、子载波间隔和第一导频分布的对应关系，所述第二通信协议中存储载波频率、子载波间隔、相对速度范围和第二导频分布的对应关系；
在步骤502中，向所述第一设备返回所述第一通信协议和所述第二通信协议，以使所述第一设备基于所述第一通信协议和所述第二通信协议在承载第一 消息的资源组RB中确定至少一个导频符号，并基于所述至少一个导频符号，对当前信道进行估计，所述第一消息为所述第一设备与第二设备之间传输的消息。
在一个可能的实现方式中，所述方法还包括：
确定多个样本载波频率、多个样本子载波间隔以及多个样本相对速度；
根据所述多个样本载波频率和多个样本子载波间隔，确定多个样本第一导频分布，以及根据所述多个样本载波频率和所述多个样本相对速度，确定多个样本第二导频分布；
基于所述多个样本载波频率、所述多个样本子载波间隔和所述多个样本第一导频分布生成第一通信协议，以及基于所述多个样本载波频率、所述样本子载波间隔、所述多个样本相对速度对应的多个相对速度范围和所述多个样本第二导频分布，生成第二通信协议。
需要说明的是，在本公开的另一实施例中，终端获取第一通信协议和第二通信协议时可以不通过基站，终端可以通过基站生成第一通信协议和第二通信协议的方法生成第一通信协议和第二通信协议，并根据第一通信协议和第二通信协议完成以下步骤。
在本公开实施例中，根据载波频率、子载波间隔和相对速度，在RB中确定至少一个导频符号，由于考虑了载波频率和相对速度，因此设置出的导频符号与载波频率和相对速度匹配，提高了确定出导频符号的准确性，进而提高了信道估计的准确性。
图6是根据一示例性实施例示出的一种信道估计方法的流程图。在本公开实施例中，以第一设备从基站中获取第一通信协议和第二通信协议，然后基于第一通信协议和第二通信协议，在RB上配置至少一个导频符号，然后基于至少一个导频符号进行信道估计为例进行说明。如图6所示，该信道估计方法可以包括以下步骤。
在步骤601中，第一设备向基站发送获取请求，该获取请求用于获取第一通信协议和第二通信协议，第一通信协议中存储载波频率、子载波间隔和第一导频分布的对应关系，第二通信协议中存储载波频率、子载波间隔和相对速度范围和第二导频分布的对应关系。
第一设备与第二设备之间可以传输第一消息，在传输第一消息时，第一设备需要将第一消息承载在RB中，而RB中可以设置导频符号，因此，第一设备可以通过该导频符号对当前信道进行估计。在第一设备与第二设备之间传输第一消息之前，第一设备向基站发送获取请求，从而从基站中获取第一通信协议和第二通信协议，然后基于第一通信协议和第二通信协议在RB中确定导频符号。其中，该获取请求至少携带第一设备的设备标识。
在步骤602中，基站接收第一设备发送的获取请求，获取第一通信协议和第二通信协议。
在一个可能的实现方式中，基站接收到第一设备发送的获取请求时，生成第一通信协议和第二通信协议；在另一个可能的实现方式中，基站事先生成第一通信协议和第二通信协议；当基站接收到第一设备发送的获取请求时，获取已生成的第一通信协议和第二通信协议。其中，基站生成第一通信协议和第二通信协议的步骤可以通过以下步骤6011-6013实现，包括：
在步骤6021中，基站确定多个样本载波频率、多个样本子载波间隔以及多个样本相对速度。
本步骤可以通过以下步骤(1)至(3)实现，包括：
(1)：基站确定载波频率范围，在该载波频率范围内进行采样，得到多个样本载波频率。
在本步骤中，基站可以在该载波频率范围内进行随机采样，得到多个样本载波频率，也可以在该载波频率范围内进行均匀采样，得到多个样本载波频率。基站还可以确定该载波频率范围包括的多个子载波频率范围，从每个子载波频率范围内选择一个载波频率，得到多个样本载波频率。
需要说明的一点是，样本载波频率的数量可以根据需要进行设置并更改，在本公开实施例中，对样本载波频率的数量不作具体限定；例如，样本载波频率可以为3或者5等。在本公开实施例中，以样本载波频率的数量为3为例进行说明。例如，基站确定的3个样本载波频率分别为6GHz、30GHz和63GHz。
(2)：基站根据多个样本载波频率，确定多个样本子载波间隔；其中，一个样本载波频率对应至少一个样本子载波间隔。
基站中存储载波频率和子载波间隔的对应关系；相应的，对于每个样本载波频率，基站根据该样本载波频率，确定至少一个样本子载波间隔的步骤可以 为：基站根据该样本载波频率，从载波频率和子载波间隔的对应关系中确定该样本载波频率对应的至少一个样本子载波间隔。
例如，当样本载波频率为6GHz时，该样本载波频率对应2个子载波间隔，分别为30KHz和60KHz；当样本载波频率为30GHz时，该样本载波频率对应3个子载波间隔，分别为60KHz、120KHz和240KHz；当样本载波频率为63GHz时，该样本载波频率对应2个样本子载波间隔，分别为120KHz和240KHz。
(3)：基站确定多个样本相对速度。
该多个样本相对速度可以由基站随机生成，也可以由用户配置。并且，样本相对速度的数量可以根据需要进行设置并更改，在本公开实施例中，对样本相对速度的数量不作具体限定；例如，样本相对速度有4个，分别为3km/h、140km/h、240km/h、500km/h。
在步骤6022中，基站根据多个样本载波频率和多个样本子载波间隔，确定多个样本第一导频分布，以及根据多个样本载波频率、多个子载波间隔和多个样本相对速度，确定多个样本第二导频分布。
第一导频分布包括在频域上导频符号的第一分布频率，第一分布频率为第一数目个RE中包括一个导频符号。第二导频分布包括在时域上导频符号的第二分布频率，第二分布频率为第二数目个RE中包括第三数目个导频符号。相应的，本步骤可以通过以下步骤(1)和(2)实现，包括：
(1)：基站根据多个样本载波频率和多个样本子载波间隔，确定多个样本第一导频分布。
基站中存储载波频率、子载波间隔和导频符号数目的对应关系；相应的，对于每个样本载波频率和样本子载波间隔；基站根据该样本载波频率和该样本子载波间隔，确定样本第一导频分布的步骤可以为：基站根据该样本载波频率和该样本子载波间隔，从载波频率、子载波间隔和导频符号数目的对应关系中获取该样本载波频率和该样本子载波间隔对应的第一数目，基于第一数目生成第一分布频率，将第一分布频率组成样本第一导频分布。
例如，在频域上，当样本载波频率为6GHz，样本子载波间隔为30KHz时，要求每27个RE中至少有一个导频符号；相应的，6GHz的样本载波频率和30KHz的样本子载波间隔对应的样本第一导频分布为每27个RE中至少有一 个导频符号。当样本载波频率为6GHz，样本子载波间隔为60KHz时，要求每13个RE中有一个导频符号；相应的，6GHz的样本载波频率和60KHz的样本子载波间隔对应的样本第一导频分布为每13个RE中有一个导频符号。
再如，当样本载波频率为30GHz，样本子载波间隔为60KHz时，要求每20个RE中至少有一个导频符号；相应的，30GHz的样本载波频率和60KHz的样本子载波间隔对应的样本第一导频分布为每20个RE中有至少一个导频符号。当样本载波频率为30GHz，样本子载波间隔为120KHz时，要求每10个RE中至少有一个导频符号；相应的，30GHz的样本载波频率和120KHz的样本子载波间隔对应的样本第一导频分布为每10个RE中有至少一个导频符号。当样本载波频率为30GHz，样本子载波间隔为240KHz时，要求每5个RE中至少有一个导频符号；相应的，30GHz的样本载波频率和240KHz的样本子载波间隔对应的样本第一导频分布为每5个RE中有至少一个导频符号。
再如，当样本载波频率为63GHz，样本子载波间隔为120KHz时，要求每11个RE中至少有一个导频符号；相应的，63GHz的样本载波频率和60120KHz的样本子载波间隔对应的样本第一导频分布为每11个RE中有至少一个导频符号。当样本载波频率为63GHz，样本子载波间隔为240KHz时，要求每5个RE中至少有一个导频符号；相应的，63GHz的样本载波频率和240KHz的样本子载波间隔对应的样本第一导频分布为每5个RE中有至少一个导频符号。
需要说明的一点是，频域资源调度可以以1个RB为单位，也可以以多个RB为单位；其中，一个RB包括12个子载波，1个子载波在时域上包括14个OFDM符号，一个OFDM符号对应频域上的12个RE。相应的，若频域资源调度以1个RB为单位，则频域资源调度以12个RE为单位，则上述频域设计如下：
当样本载波频率为6GHz，样本子载波间隔为30KHz时，要求每12个RE中至少有一个导频符号；相应的，6GHz的样本载波频率和30KHz的样本子载波间隔对应的样本第一导频分布为每12个RE中至少有一个导频符号。当样本载波频率为6GHz，样本子载波间隔为60KHz时，要求每12个RE中有一个导频符号；相应的，6GHz的样本载波频率和60KHz的样本子载波间隔对应的样本第一导频分布为每12个RE中有一个导频符号。
当样本载波频率为30GHz，样本子载波间隔为60KHz时，要求每12个 RE中至少有一个导频符号；相应的，30GHz的样本载波频率和60KHz的样本子载波间隔对应的样本第一导频分布为每12个RE中有至少一个导频符号。当样本载波频率为30GHz，样本子载波间隔为120KHz时，要求每6个RE中至少有一个导频符号；相应的，30GHz的样本载波频率和120KHz的样本子载波间隔对应的样本第一导频分布为每6个RE中有至少一个导频符号。当样本载波频率为30GHz，样本子载波间隔为240KHz时，要求每4个RE中至少有一个导频符号；相应的，30GHz的样本载波频率和240KHz的样本子载波间隔对应的样本第一导频分布为每4个RE中有至少一个导频符号。
当样本载波频率为63GHz，样本子载波间隔为120KHz时，要求每6个RE中至少有一个导频符号；相应的，63GHz的样本载波频率和60120KHz的样本子载波间隔对应的样本第一导频分布为每6个RE中有至少一个导频符号。当样本载波频率为63GHz，样本子载波间隔为240KHz时，要求每4个RE中至少有一个导频符号；相应的，63GHz的样本载波频率和240KHz的样本子载波间隔对应的样本第一导频分布为每4个RE中有至少一个导频符号。
同理，若频域资源调度以2个RB为单位，则频域资源调度以24个RE为单位，则上述频域设计如下：
当样本载波频率为6GHz，样本子载波间隔为30KHz时，要求每24个RE中至少有一个导频符号；相应的，6GHz的样本载波频率和30KHz的样本子载波间隔对应的样本第一导频分布为每24个RE中至少有一个导频符号。当样本载波频率为6GHz，样本子载波间隔为60KHz时，要求每12个RE中有一个导频符号；相应的，6GHz的样本载波频率和60KHz的样本子载波间隔对应的样本第一导频分布为每12个RE中有一个导频符号。
当样本载波频率为30GHz，样本子载波间隔为60KHz时，要求每12个RE中至少有一个导频符号；相应的，30GHz的样本载波频率和60KHz的样本子载波间隔对应的样本第一导频分布为每12个RE中有至少一个导频符号。当样本载波频率为30GHz，样本子载波间隔为120KHz时，要求每6个RE中至少有一个导频符号；相应的，30GHz的样本载波频率和120KHz的样本子载波间隔对应的样本第一导频分布为每6个RE中有至少一个导频符号。当样本载波频率为30GHz，样本子载波间隔为240KHz时，要求每4个RE中至少有一个导频符号；相应的，30GHz的样本载波频率和240KHz的样本子载波间隔对 应的样本第一导频分布为每4个RE中有至少一个导频符号。
当样本载波频率为63GHz，样本子载波间隔为120KHz时，要求每6个RE中至少有一个导频符号；相应的，63GHz的样本载波频率和120KHz的样本子载波间隔对应的样本第一导频分布为每6个RE中有至少一个导频符号。当样本载波频率为63GHz，样本子载波间隔为240KHz时，要求每4个RE中至少有一个导频符号；相应的，63GHz的样本载波频率和240KHz的样本子载波间隔对应的样本第一导频分布为每4个RE中有至少一个导频符号。
需要说明的另一点是，频域资源调度还可以以2个以上的RB为单位，例如，频域资源调度以3个RB为单位或者4个RB为单位等。在本公开实施例中，对此不再一一举例说明。
(2)：基站根据多个样本载波频率、多个子载波间隔和多个样本相对速度，确定多个样本第二导频分布。
基站中还存储载波频率、子载波间隔、相对速度和导频符号数目的对应关系；对于每个样本载波频率、样本子载波间隔和样本相对速度，基站根据该样本载波频率、样本子载波间隔和该样本相对速度，确定样本第二导频分布的步骤可以为：基站根据该样本载波频率、样本子载波间隔和该样本相对速度，从载波频率、子载波间隔、相对速度和导频符号数目的对应关系中获取该样本载波频率、样本子载波间隔和该样本相对速度对应的第二分布频率，将第二分布频率组成样本第二导频分布。
基站事先生成载波频率、子载波间隔、相对速度和导频符号数目的对应关系。对于任一载波频率、任一子载波间隔、任一相对速度，基站生成该载波频率、子载波间隔、相对速度和导频符号数目的对应关系的步骤可以为：基站根据该相对速度，确定最大多普勒频偏，根据该最大多普勒频偏，确定相关时间，根据该相关时间、载波频率和子载波间隔，确定导频符号数目，关联该载波频率、该子载波间隔、该相对速度和导频符号数目的对应关系。其中，导频数目应该满足导频在时域上的导频间隔不大于该相关时间。
例如，在时域上，当样本载波频率为6GHz，样本相对速度为3km/h时，要求每25ms至少有一个导频符号，相应的，该相关时间为25ms。当样本载波频率为6GHz，样本相对速度为140km/h时，要求每0.5ms至少有一个导频符号，相应的，该相关时间为0.5ms。当样本载波频率为6GHz，样本相对速度为 240km/h时，要求每0.32ms至少有一个导频符号，相应的，该相关时间为0.32ms。当样本载波频率为6GHz，样本相对速度为500km/h时，要求每0.15ms至少有一个导频符号，相应的，该相关时间为0.15ms。
再如，当样本载波频率为30GHz，样本相对速度为3km/h时，要求每5ms至少有一个导频符号，相应的，该相关时间为5ms。当样本载波频率为30GHz，样本相对速度为140km/h时，要求每0.1ms至少有一个导频符号，相应的，该相关时间为0.1ms。当样本载波频率为30GHz，样本相对速度为240km/h时，要求每0.06ms至少有一个导频符号，相应的，该相关时间为0.06ms。当样本载波频率为30GHz，样本相对速度为500km/h时，要求每0.03ms至少有一个导频符号，相应的，该相关时间为0.03ms。
当样本载波频率为63GHz，样本相对速度为3km/h时，要求每2.4ms至少有一个导频符号，相应的，该相关时间为2.4ms。当样本载波频率为63GHz，样本相对速度为140km/h时，要求每0.05ms至少有一个导频符号，相应的，该相关时间为0.05ms。当样本载波频率为63GHz，样本相对速度为240km/h时，要求每0.03ms至少有一个导频符号，相应的，该相关时间为0.03ms。当样本载波频率为63GHz，样本相对速度为600km/h时，要求每0.0145ms至少有一个导频符号，相应的，该相关时间为0.0145ms。
鉴于下一代通信标准的帧结构及子载波间隔等特点，时域设计具体设计如下：
当样本载波频率为6GHz，样本相对速度为3km/h时，要求每1ms至少有一个导频符号，相应的，该导频间隔为1ms。当样本载波频率为6GHz，样本相对速度为140km/h时，要求每0.5ms至少有一个导频符号，相应的，该导频间隔为0.5ms。当样本载波频率为6GHz，样本相对速度为240km/h时，要求每0.25ms至少有一个导频符号，相应的，该导频间隔为0.25ms。当样本载波频率为6GHz，样本相对速度为600km/h时，要求每0.125ms至少有一个导频符号，相应的，该导频间隔为0.125ms。
当样本载波频率为6GHz，样本子载波间隔为15KHz时，每个子载波在时域上对应1个slot，1个slot包括14个OFDM符号，样本相对速度为3km/h时，要求每14个OFDM符号中有一个导频符号，相应的，6GHz的样本载波频率、15KHz的样本子载波间隔和3km/h的样本相对速度对应的第二导频分布 为每14个OFDM符号中有一个导频符号。
当样本载波频率为6GHz，样本子载波间隔为30KHz时，每个子载波在时域上对应2个slot，1个slot包括14个OFDM符号，因此，每个子载波对应28个OFDM符号，样本相对速度为3km/h时，要求每28个OFDM符号中有一个导频符号，相应的，6GHz的样本载波频率、30KHz的样本子载波间隔和3km/h的样本相对速度对应的第二导频分布为每28个OFDM符号中有一个导频符号。
当样本载波频率为6GHz，样本子载波间隔为60KHz时，每个子载波在时域上对应4个slot，1个slot包括14个OFDM符号，因此，每个子载波对应56个OFDM符号，样本相对速度为3km/h时，要求每56个OFDM符号中有一个导频符号，相应的，6GHz的样本载波频率、60KHz的样本子载波间隔和3km/h的样本相对速度对应的第二导频分布为每56个OFDM符号中有一个导频符号。
当样本载波频率为6GHz，样本子载波间隔为15KHz时，每个子载波在时域上对应1个slot，1个slot包括14个OFDM符号，样本相对速度为140km/h时，要求每7个OFDM符号中有一个导频符号，相应的，6GHz的样本载波频率、15KHz的样本子载波间隔和140km/h的样本相对速度对应的第二导频分布为每7个OFDM符号中有一个导频符号。
当样本载波频率为6GHz，样本子载波间隔为30KHz时，每个子载波在时域上对应1个slot，1个slot包括14个OFDM符号，样本相对速度为140km/h时，要求每14个OFDM符号中有1个导频符号，相应的，6GHz的样本载波频率、30KHz的样本子载波间隔和140km/h的样本相对速度对应的第二导频分布为每14个OFDM符号中有1个导频符号。
当样本载波频率为6GHz，样本子载波间隔为60KHz时，每个子载波在时域上对应1个slot，1个slot包括14个OFDM符号，样本相对速度为140km/h时，要求每28个OFDM符号中有一个导频符号，相应的，6GHz的样本载波频率、60KHz的样本子载波间隔和140km/h的样本相对速度对应的第二导频分布为每28个OFDM符号中有一个导频符号。
当样本载波频率为6GHz，样本子载波间隔为15KHz时，每个子载波在时域上对应1个slot，1个slot包括14个OFDM符号，样本相对速度为240km/h 时，要求每14个OFDM符号中有4个导频符号，相应的，6GHz的样本载波频率、15KHz的样本子载波间隔和240km/h的样本相对速度对应的第二导频分布为每14个OFDM符号中有4个导频符号。
当样本载波频率为6GHz，样本子载波间隔为30KHz时，每个子载波在时域上对应2个slot，1个slot包括14个OFDM符号，样本相对速度为240km/h时，要求每28个OFDM符号中有4个导频符号，相应的，6GHz的样本载波频率、30KHz的样本子载波间隔和240km/h的样本相对速度对应的第二导频分布为每28个OFDM符号中有4个导频符号。
当样本载波频率为6GHz，样本子载波间隔为60KHz时，每个子载波在时域上对应4个slot，1个slot包括14个OFDM符号，样本相对速度为240km/h时，要求每56个OFDM符号中有4个导频符号，相应的，6GHz的样本载波频率、60KHz的样本子载波间隔和240km/h的样本相对速度对应的第二导频分布为每56个OFDM符号中有4个导频符号。
当样本载波频率为6GHz，样本子载波间隔为15KHz时，每个子载波在时域上对应1个slot，1个slot包括14个OFDM符号，样本相对速度为500km/h时，要求每14个OFDM符号中有7个导频符号，相应的，6GHz的样本载波频率、15KHz的样本子载波间隔和500km/h的样本相对速度对应的第二导频分布为每14个OFDM符号中有7个导频符号。
当样本载波频率为6GHz，样本子载波间隔为30KHz时，每个子载波在时域上对应2个slot，1个slot包括14个OFDM符号，样本相对速度为500km/h时，要求每28个OFDM符号中有7个导频符号，相应的，6GHz的样本载波频率、30KHz的样本子载波间隔和500km/h的样本相对速度对应的第二导频分布为每28个OFDM符号中有7个导频符号。
当样本载波频率为6GHz，样本子载波间隔为60KHz时，每个子载波在时域上对应4个slot，1个slot包括14个OFDM符号，样本相对速度为500km/h时，要求每56个OFDM符号中有7个导频符号，相应的，6GHz的样本载波频率、60KHz的样本子载波间隔和500km/h的样本相对速度对应的第二导频分布为每56个OFDM符号中有7个导频符号。
当样本载波频率为30GHz，样本子载波间隔为15KHz时，每个子载波在时域上对应1个slot，1个slot包括14个OFDM符号，样本相对速度为3km/h 时，要求每14个OFDM符号中有一个导频符号，相应的，30GHz的样本载波频率、15KHz的样本子载波间隔和3km/h的样本相对速度对应的第二导频分布为每14个OFDM符号中有一个导频符号。
当样本载波频率为30GHz，样本子载波间隔为30KHz时，每个子载波在时域上对应2个slot，1个slot包括14个OFDM符号，因此，每个子载波对应28个OFDM符号，样本相对速度为3km/h时，要求每28个OFDM符号中有一个导频符号，相应的，30GHz的样本载波频率、30KHz的样本子载波间隔和3km/h的样本相对速度对应的第二导频分布为每28个OFDM符号中有一个导频符号。
当样本载波频率为30GHz，样本子载波间隔为60KHz时，每个子载波在时域上对应4个slot，1个slot包括14个OFDM符号，因此，每个子载波对应56个OFDM符号，样本相对速度为3km/h时，要求每56个OFDM符号中有一个导频符号，相应的，30GHz的样本载波频率、60KHz的样本子载波间隔和3km/h的样本相对速度对应的第二导频分布为每56个OFDM符号中有一个导频符号。
当样本载波频率为30GHz，样本子载波间隔为120KHz时，每个子载波在时域上对应8个slot，1个slot包括14个OFDM符号，样本相对速度为3km/h时，要求每112个OFDM符号中有一个导频符号，相应的，30GHz的样本载波频率、120KHz的样本子载波间隔和3km/h的样本相对速度对应的第二导频分布为每112个OFDM符号中有一个导频符号。
当样本载波频率为30GHz，样本子载波间隔为15KHz时，每个子载波在时域上对应1个slot，1个slot包括14个OFDM符号，样本相对速度为140km/h时，要求每14个OFDM符号中有7个导频符号，相应的，30GHz的样本载波频率、15KHz的样本子载波间隔和140km/h的样本相对速度对应的第二导频分布为每14个OFDM符号中有7个导频符号。
当样本载波频率为30GHz，样本子载波间隔为30KHz时，每个子载波在时域上对应2个slot，1个slot包括14个OFDM符号，样本相对速度为140km/h时，要求每28个OFDM符号中有7个导频符号，相应的，30GHz的样本载波频率、30KHz的样本子载波间隔和140km/h的样本相对速度对应的第二导频分布为每28个OFDM符号中有7个导频符号。
当样本载波频率为30GHz，样本子载波间隔为60KHz时，每个子载波在时域上对应4个slot，1个slot包括14个OFDM符号，样本相对速度为140km/h时，要求每56个OFDM符号中有7个导频符号，相应的，30GHz的样本载波频率、60KHz的样本子载波间隔和140km/h的样本相对速度对应的第二导频分布为每56个OFDM符号中有7个导频符号。
当样本载波频率为30GHz，样本子载波间隔为120KHz时，每个子载波在时域上对应8个slot，1个slot包括14个OFDM符号，样本相对速度为140km/h时，要求每112个OFDM符号中有7个导频符号，相应的，30GHz的样本载波频率、120KHz的样本子载波间隔和140km/h的样本相对速度对应的第二导频分布为每112个OFDM符号中有7个导频符号。
当样本载波频率为30GHz，样本子载波间隔为15KHz时，每个子载波在时域上对应1个slot，1个slot包括14个OFDM符号，样本相对速度为240km/h时，要求每14个OFDM符号中有14个导频符号，相应的，30GHz的样本载波频率、15KHz的样本子载波间隔和240km/h的样本相对速度对应的第二导频分布为每14个OFDM符号中有14个导频符号。
当样本载波频率为30GHz，样本子载波间隔为30KHz时，每个子载波在时域上对应2个slot，1个slot包括14个OFDM符号，样本相对速度为240km/h时，要求每28个OFDM符号中有14个导频符号，相应的，30GHz的样本载波频率、30KHz的样本子载波间隔和240km/h的样本相对速度对应的第二导频分布为每28个OFDM符号中有14个导频符号。
当样本载波频率为30GHz，样本子载波间隔为60KHz时，每个子载波在时域上对应4个slot，1个slot包括14个OFDM符号，样本相对速度为240km/h时，要求每56个OFDM符号中有14个导频符号，相应的，30GHz的样本载波频率、60KHz的样本子载波间隔和240km/h的样本相对速度对应的第二导频分布为每56个OFDM符号中有14个导频符号。
当样本载波频率为30GHz，样本子载波间隔为120KHz时，每个子载波在时域上对应8个slot，1个slot包括14个OFDM符号，样本相对速度为240km/h时，要求每112个OFDM符号中有14个导频符号，相应的，30GHz的样本载波频率、120KHz的样本子载波间隔和240km/h的样本相对速度对应的第二导频分布为每112个OFDM符号中有14个导频符号。
当样本载波频率为30GHz，样本子载波间隔为15KHz时，每个子载波在时域上对应1个slot，1个slot包括14个OFDM符号，样本相对速度为500km/h时，要求每14个OFDM符号中有7个导频符号，相应的，30GHz的样本载波频率、15KHz的样本子载波间隔和500km/h的样本相对速度对应的第二导频分布为每14个OFDM符号中有14个导频符号。
当样本载波频率为30GHz，样本子载波间隔为30KHz时，每个子载波在时域上对应2个slot，1个slot包括14个OFDM符号，样本相对速度为500km/h时，要求每28个OFDM符号中有7个导频符号，相应的，30GHz的样本载波频率、30KHz的样本子载波间隔和500km/h的样本相对速度对应的第二导频分布为每28个OFDM符号中有28个导频符号。
当样本载波频率为30GHz，样本子载波间隔为60KHz时，每个子载波在时域上对应4个slot，1个slot包括14个OFDM符号，样本相对速度为500km/h时，要求每56个OFDM符号中有7个导频符号，相应的，30GHz的样本载波频率、60KHz的样本子载波间隔和500km/h的样本相对速度对应的第二导频分布为每56个OFDM符号中有28个导频符号。
当样本载波频率为30GHz，样本子载波间隔为120KHz时，每个子载波在时域上对应8个slot，1个slot包括14个OFDM符号，样本相对速度为500km/h时，要求每112个OFDM符号中有28个导频符号，相应的，30GHz的样本载波频率、120KHz的样本子载波间隔和500km/h的样本相对速度对应的第二导频分布为每112个OFDM符号中有28个导频符号。
当样本载波频率为63GHz，样本子载波间隔为15KHz时，每个子载波在时域上对应1个slot，1个slot包括14个OFDM符号，样本相对速度为3km/h时，要求每14个OFDM符号中有一个导频符号，相应的，63GHz的样本载波频率、15KHz的样本子载波间隔和3km/h的样本相对速度对应的第二导频分布为每14个OFDM符号中有一个导频符号。
当样本载波频率为63GHz，样本子载波间隔为30KHz时，每个子载波在时域上对应2个slot，1个slot包括14个OFDM符号，因此，每个子载波对应28个OFDM符号，样本相对速度为3km/h时，要求每28个OFDM符号中有一个导频符号，相应的，63GHz的样本载波频率、30KHz的样本子载波间隔和3km/h的样本相对速度对应的第二导频分布为每28个OFDM符号中有一个导 频符号。
当样本载波频率为63GHz，样本子载波间隔为60KHz时，每个子载波在时域上对应4个slot，1个slot包括14个OFDM符号，因此，每个子载波对应56个OFDM符号，样本相对速度为3km/h时，要求每56个OFDM符号中有一个导频符号，相应的，63GHz的样本载波频率、60KHz的样本子载波间隔和3km/h的样本相对速度对应的第二导频分布为每56个OFDM符号中有一个导频符号。
当样本载波频率为63GHz，样本子载波间隔为120KHz时，每个子载波在时域上对应8个slot，1个slot包括14个OFDM符号，因此，每个子载波对应112个OFDM符号，样本相对速度为3km/h时，要求每112个OFDM符号中有一个导频符号，相应的，63GHz的样本载波频率、120KHz的样本子载波间隔和3km/h的样本相对速度对应的第二导频分布为每112个OFDM符号中有一个导频符号。
当样本载波频率为63GHz，样本子载波间隔为15KHz时，每个子载波在时域上对应1个slot，1个slot包括14个OFDM符号，样本相对速度为140km/h时，要求每14个OFDM符号中有14个导频符号，相应的，63GHz的样本载波频率、15KHz的样本子载波间隔和140km/h的样本相对速度对应的第二导频分布为每14个OFDM符号中有14个导频符号。
当样本载波频率为63GHz，样本子载波间隔为30KHz时，每个子载波在时域上对应2个slot，1个slot包括14个OFDM符号，样本相对速度为140km/h时，要求每28个OFDM符号中有14个导频符号，相应的，63GHz的样本载波频率、15KHz的样本子载波间隔和140km/h的样本相对速度对应的第二导频分布为每28个OFDM符号中有14个导频符号。
当样本载波频率为63GHz，样本子载波间隔为60KHz时，每个子载波在时域上对应4个slot，1个slot包括14个OFDM符号，样本相对速度为140km/h时，要求每56个OFDM符号中有14个导频符号，相应的，63GHz的样本载波频率、15KHz的样本子载波间隔和140km/h的样本相对速度对应的第二导频分布为每56个OFDM符号中有14个导频符号。
当样本载波频率为63GHz，样本子载波间隔为120KHz时，每个子载波在时域上对应8个slot，1个slot包括14个OFDM符号，因此，每个子载波对应 112个OFDM符号，样本相对速度为3km/h时，要求每112个OFDM符号中有14个导频符号，相应的，63GHz的样本载波频率、120KHz的样本子载波间隔和140km/h的样本相对速度对应的第二导频分布为每112个OFDM符号中有14个导频符号。
当样本载波频率为63GHz，样本子载波间隔为15KHz时，每个子载波在时域上对应1个slot，1个slot包括14个OFDM符号，样本相对速度为240km/h时，要求每14个OFDM符号中有14个导频符号，相应的，63GHz的样本载波频率、15KHz的样本子载波间隔和240km/h的样本相对速度对应的第二导频分布为每14个OFDM符号中有14个导频符号。
当样本载波频率为63GHz，样本子载波间隔为30KHz时，每个子载波在时域上对应2个slot，1个slot包括14个OFDM符号，样本相对速度为240km/h时，要求每28个OFDM符号中有14个导频符号，相应的，63GHz的样本载波频率、15KHz的样本子载波间隔和240km/h的样本相对速度对应的第二导频分布为每28个OFDM符号中有14个导频符号。
当样本载波频率为63GHz，样本子载波间隔为60KHz时，每个子载波在时域上对应4个slot，1个slot包括14个OFDM符号，样本相对速度为240km/h时，要求每56个OFDM符号中有14个导频符号，相应的，63GHz的样本载波频率、15KHz的样本子载波间隔和240km/h的样本相对速度对应的第二导频分布为每56个OFDM符号中有14个导频符号。
当样本载波频率为63GHz，样本子载波间隔为120KHz时，每个子载波在时域上对应8个slot，1个slot包括14个OFDM符号，因此，每个子载波对应112个OFDM符号，样本相对速度为3km/h时，要求每112个OFDM符号中有14个导频符号，相应的，63GHz的样本载波频率、120KHz的样本子载波间隔和240km/h的样本相对速度对应的第二导频分布为每112个OFDM符号中有14个导频符号。
当样本载波频率为63GHz，样本子载波间隔为15KHz时，每个子载波在时域上对应1个slot，1个slot包括14个OFDM符号，样本相对速度为500km/h时，要求每14个OFDM符号中有14个导频符号，相应的，63GHz的样本载波频率、15KHz的样本子载波间隔和500km/h的样本相对速度对应的第二导频分布为每14个OFDM符号中有14个导频符号。
当样本载波频率为63GHz，样本子载波间隔为30KHz时，每个子载波在时域上对应1个slot，1个slot包括14个OFDM符号，样本相对速度为500km/h时，要求每28个OFDM符号中有28个导频符号，相应的，63GHz的样本载波频率、30KHz的样本子载波间隔和500km/h的样本相对速度对应的第二导频分布为每28个OFDM符号中有28个导频符号。
当样本载波频率为63GHz，样本子载波间隔为60KHz时，每个子载波在时域上对应1个slot，1个slot包括14个OFDM符号，样本相对速度为500km/h时，要求每56个OFDM符号中有56个导频符号，相应的，63GHz的样本载波频率、60KHz的样本子载波间隔和500km/h的样本相对速度对应的第二导频分布为每56个OFDM符号中有56个导频符号。
当样本载波频率为63GHz，样本子载波间隔为120KHz时，每个子载波在时域上对应8个slot，1个slot包括14个OFDM符号，因此，每个子载波对应112个OFDM符号，样本相对速度为3km/h时，要求每112个OFDM符号中有56个导频符号，相应的，63GHz的样本载波频率、120KHz的样本子载波间隔和240km/h的样本相对速度对应的第二导频分布为每112个OFDM符号中有56个导频符号。
在步骤6023中，基站基于多个样本载波频率、多个样本子载波间隔和多个样本第一导频分布生成第一通信协议，以及基于多个样本载波频率、多个样本相对速度对应的多个相对速度范围和多个样本第二导频分布，生成第二通信协议。
基站已经根据多个样本载波频率和多个样本子载波间隔得到多个样本第一导频分布，在本步骤中，基站存储样本载波频率、样本子载波间隔和样本第一导频分布的对应关系，将该对应关系添加到第一通信协议中。基站已经根据多个样本载波频率、多个样本子载波间隔和多个样本相对速度得到多个样本第二导频分布；在本步骤中，基站根据多个样本相对速度，确定多个样本相对速度范围，存储样本载波频率、样本子载波间隔、样本相对速度范围和样本第二导频分布的对应关系，将该对应关系添加到第二通信协议中。
需要说明的一点是，上述步骤601-602只需执行一次，后续第一设备进行信道估计时，直接使用第一通信协议与第二通信协议即可，不需要重复获取第一通信协议和第二通信协议。
需要说明的另一点是，第一通信协议和第二通信协议可以为一个通信协议，也可以为不同的两个通信协议。当第一通信协议和第二通信协议为一个通信协议时，该通信协议中存储载波频率、子载波间隔和第一导频分布的对应关系以及载波频率、子载波间隔、相对速度范围和第二导频分布的对应关系。
在步骤603中，基站向第一设备返回第一通信协议和第二通信协议。
获取请求中携带第一设备的设备标识；在本步骤中，基站根据第一设备的设备标识，向第一设备发送第一通信协议和第二通信协议。其中，第一通信协议和第二通信协议可以承载在通知信令中，并且，第一通信协议和第二通信协议可以承载在同一个通知信令中，也可以承载在两个不同的通知信令中，在本公开实施例中，对此不作具体限定。
在步骤604中，第一设备接收基站发送的第一通信协议和第二通信协议。
第一设备接收到第一通信协议和第二通信协议后，第一设备存储第一通信协议和第二通信协议，以便于后续在与其他设备进行信息交互时，基于已存储的第一通信协议和第二通信协议，确定导频符号。
在步骤605中，当第一设备与第二设备之间传输第一消息时，第一设备确定承载第一消息的RB。
第一设备向基站发送分配请求，该分配请求用于请求基站为第一设备分配RB，且该分配请求携带第一设备的设备标识；基站接收第一设备发送的分配请求，为该第一设备分配至少一个RB，向第一设备发送该至少一个RB的标识。第一设备接收基站发送的该至少一个RB的标识，基于该至少一个RB的标识，在资源池中确定至少一个RB的标识对应的RB。
在步骤606中，第一设备基于第一通信协议和第二通信协议在承载第一消息的RB中确定至少一个导频符号。
本步骤可以通过以下步骤6061-6063实现，包括：
在步骤6061中，第一设备确定该RB包括的子载波的载波频率和子载波间隔，以及确定第一设备与第二设备之间的相对速度。
第二设备可以为基站，也可以为车辆中的第二终端。当第二设备为基站时，第一设备确定第一设备与第二设备之间的相对速度的步骤可以为：第一设备将第一设备的移动速度确定为第一设备与第二设备之间的相对速度。当第二设备为第二终端时，第一设备确定第一设备与第二设备之间的相对速度的步骤可以 为：第一设备确定第一设备的移动速度和移动方向，以及确定第二设备的移动速度和移动方向，根据第一设备的移动速度和移动方向，以及第二设备的移动速度和移动方向，确定第一设备与第二设备之间的相对速度。
在步骤6062中，第一设备根据该载波频率和该子载波间隔，从已存储的第一通信协议中获取RB中的导频符号在频域上的第一导频分布，第一通信协议中存储载波频率、子载波间隔和第一导频分布的对应关系。
例如，当该RB中的子载波对应的载波频率为63GHz，子载波间隔为240KHz时，第一设备根据该载波频率：63GHz和子载波间隔：240KHz，从第一通信协议中获取载波频率和子载波间隔对应的第一导频分布为：每4个RE中至少有一个导频符号。
在步骤6062中，第一设备根据该载波频率、该子载波频率和第一设备与第二设备之间的相对速度，从已存储的第二通信协议中获取RB中的导频符号在时域上的第二导频分布，所述第二通信协议中存储载波频率、子载波频率、相对速度范围和第二导频分布的对应关系。
例如，当该RB中的子载波对应的载波频率为63GHz，子载波间隔为240KHz，第一设备与第二设备间的相对速度为240km/h时，第一设备根据该载波频率：63GHz、子载波间隔：240KHz和相对速度：240km/h，从第二通信协议中获取载波频率、子载波间隔和相对速度对应的第二导频分布为：每4个OFDM符号中有一个导频符号。
在步骤6063中，第一设备根据第一导频分布和第二导频分布，在该RB上设置至少一个导频符号。
第一设备直接在该RB上配置至少一个导频符号，至少一个导频符号在频域上满足第一导频分布，在时域上满足第二导频分布。其中，导频符号在时域上可以均匀分布或者不均匀分布，同样，导频符号在频域上也可以均匀分布或者不均匀分布。
在本公开实施例中，以导频符号在时域上均匀分布以及在频域上均匀分布为例进行说明。例如，第一导频分布为：每4个RE中至少有一个导频符号，第二导频分布为每4个OFDM符号中有一个导频符号。由于一个RB在频域上包括12个RE，分别为第1个RE至第12个RE。在时域上包括14个OFDM符号，分别为第1个OFDM符号至第14个OFDM符号。则第一设备在频域上 设置3个导频符号，在时域上设置4个导频符号。第一设备可以在频域上均匀选择3个RE，分别为第1个RE、第5个RE和第9个RE，或者为第2个RE、第6个RE和第10个RE，或者为第3个RE、第7个RE和第11个RE，或者为第4个RE、第8个RE和第12个RE，将选择的RE确定为导频。第一设备可以在时域上选择第1,5,9和13个OFDM符号，或者选择第2,6,10和14个OFDM符号，在选择的OFDM符号确定为导频符号。例如，参见图7，在图7中以第4个RE、第8个RE和第12个RE为导频，以第2,6,10和14个OFDM为导频符号为例。
在步骤607中，第一设备基于至少一个导频符号，对当前信道进行估计。
第一设备可以基于该RB中的至少一个导频符号对当前信道进行估计，也可以仅第一设备基于该RB中的部分RE上的至少一个导频符号对当前信道进行估计。当第一设备基于该RB中的部分RE上的至少一个导频符号对当前信道进行估计时，本步骤可以通过以下步骤6071-6073实现，包括：
在步骤6071中，第一设备确定当前信道在时域上所占用的符号数目。
第一设备中存储信道宽度和符号数目的对应关系。相应的，本步骤可以为：第一设备根据当前信道的信道宽度，从信道宽度和符号数目的对应关系中确定该信道宽度对应的符号数目。
在步骤6072中，第一设备根据该符号数目和该RB包括的子载波数目，在该RB上确定多个目标RE。
第一设备根据该符号数目，在该RB的时域上选择该符号数目个OFDM符号，将选择的OFDM符号在频域上RE确定为多个目标RE。其中，选择的该符号数目个OFDM符号可以为连续的OFDM符号，也可以为不连续的OFDM符号，在本公开实施例中，对选择方式不作具体限定。例如，选择的该符号数目个OFDM符号可以为连续的OFDM符号，且该符号数目为3，则第一设备可以选择第1,2和3个OFDM符号，或者第2,4和6个OFDM符号等。在图7中以第一设备选择第1,2和3个OFDM符号，且1,2和3个OFDM符号均为导频符号为例进行说明。在图8中以第一设备选择第1,2和3个OFDM符号，且第2个OFDM符号设置为导频符号为例进行说明，在图9中以第一设备选择第1,2和3个OFDM符号，且第1，2，3个OFDM符号设置为导频符号为例进行说明。
在步骤6073中，第一设备基于该多个目标RE中的至少一个导频符号，对该当前信道进行估计。
在本公开实施例中，根据载波频率、子载波间隔和相对速度，在RB中确定至少一个导频符号，由于考虑了载波频率和相对速度，因此设置出的导频符号与载波频率和相对速度匹配，提高了确定出导频符号的准确性，进而提高了信道估计的准确性。
图10是根据另一示例性实施例示出的一种信道估计方法的流程图。在本公开实施例中，以第一设备从基站中查询分布信息，该分布信息为第一导频分布和第二导频分布，基于第一导频分布和第二导频分布，在RB中确定至少一个导频符号为例进行说明。如图10所示，该信道估计方法可以包括以下步骤。
在步骤1001中，当第一设备与第二设备之间传输第一消息时，第一设备确定承载第一消息的RB。
本步骤可以步骤605相同，在此不再赘述。
在步骤1002中，第一设备确定该RB包括的子载波的载波频率、子载波间隔和相对速度。
本步骤和步骤6061中的步骤相同，在此不再赘述。
在步骤1003中，第一设备向基站发送查询请求，该查询请求携带载波频率、子载波间隔和相对速度。
在步骤1004中，基站接收第一设备发送的查询请求，根据该查询请求中的载波频率和子载波间隔，确定RB中的导频符号在频域上的第一导频分布。
基站中存储第一通信协议，基站根据载波频率和子载波间隔，从第一通信协议中获取RB中的导频符号在频域上的第一导频分布。
在步骤1005中，基站根据该查询请求中的载波频率、子载波间隔和相对速度，确定RB中的导频符号在时域上的第二导频分布。
基站中存储第二通信协议，基站根据载波频率、子载波间隔和相对速度，从第二通信协议中获取RB中的导频符号在时域上的第二导频分布。
在步骤1006中，基站将第一导频分布和第二导频分布返回给第一设备。
该查询请求中还携带第一设备的设备标识；基站根据第一设备的设备标识，向第一设备返回第一导频分布和第二导频分布。
在步骤1003中，第一设备接收基站返回的第一导频分布和第二导频分布。
在步骤1004中，第一设备根据第一导频分布和第二导频分布，在RB上设置至少一个导频符号。
本步骤和步骤6063中的步骤相同，在此不再赘述。
在步骤1005中，第一设备基于至少一个导频符号，对当前信道进行估计。
本步骤和步骤607中的步骤相同，在此不再赘述。
在本公开实施例中，根据载波频率、子载波间隔和相对速度，在RB中确定至少一个导频符号，由于考虑了载波频率和相对速度，因此设置出的导频符号与载波频率和相对速度匹配，提高了确定出导频符号的准确性，进而提高了信道估计的准确性。
图11是根据另一示例性实施例示出的一种信道估计方法的流程图。在本公开实施例中，以基站返回导频符号的分布信息，该分布信息为导频符号的标识，第一设备直接基于该导频符号的标识，在RB中确定至少一个导频符号为例进行说明。如图11所示，该信道估计方法可以包括以下步骤。
在步骤1101中，当第一设备与第二设备之间传输第一消息时，第一设备确定承载第一消息的RB。
本步骤可以步骤605相同，在此不再赘述。
在步骤1102中，第一设备确定该RB包括的子载波的载波频率、子载波间隔和相对速度。
本步骤和步骤6061中的步骤相同，在此不再赘述。
在步骤1103中，第一设备向基站发送配置请求，该配置请求携带载波频率、子载波间隔和第一设备与第二设备的相对速度。
需要说明的一点是，在本步骤中，该配置请求还可以仅携带载波频率，以使基站根据该载波频率，在该RB上配置至少一个导频符号。
在步骤1104中，基站接收第一设备发送的配置请求，根据该配置请求中的载波频率、子载波间隔和第一设备与第二设备的相对速度在该RB中配置至少一个导频符号的标识。
基站根据该载波频率和该子载波间隔，确定导频符号在频域上的第一导频分布，根据该载波频率、该子载波间隔和该相对速度，确定导频符号在时域上 的第二导频分布，根据第一导频分布和第二导频分布，在该RB中配置至少一个导频符号，确定至少一个导频符号的标识。
其中，基站根据该载波频率和该子载波间隔，确定导频符号在频域上的第一导频分布和步骤1004的过程相同，在此不再赘述。基站根据该载波频率、该子载波间隔和该相对速度，确定导频符号在时域上的第二导频分布和步骤705的过程相同，在此不再赘述。基站根据第一导频分布和第二导频分布，在该RB中配置至少一个导频符号，确定至少一个导频符号的标识和步骤6063中第一设备根据第一导频分布和第二导频分布，在该RB中配置至少一个导频符号，确定至少一个导频符号的标识的步骤相同，在此不再赘述。
需要说明的一点是，当该配置请求仅携带该载波频率时，基站根据该载波频率，在第一通信协议中查询该载波频率对应的多个第一导频分布，从多个第一导频分布中确定导频符号分布最密集的第一导频分布，根据该载波频率，在第二通信协议中查询该载波频率对应的多个第二导频分布，从多个第二导频分布中确定导频符号分布最密集的第二导频分布。基站基于选择的第一导频分布和选择的第二导频分布，在该RB中配置至少一个导频符号。
例如，当载波频率为6GHz，子载波间隔为15KHz，第一设备与第二设备的相对速度为3km/h时，基站可以得到该RB在时域上导频符号的位置为14个OFDM符号中的任一一个OFDM符号。
当载波频率为6GHz，子载波间隔为15KHz，第一设备与第二设备的相对速度为140km/h时，基站可以得到该RB在时域上导频符号的位置为(1，8)或(2，9)等。
再如，当载波频率为6GHz，子载波间隔为15KHz，第一设备与第二设备的相对速度为240km/h时，基站可以得到该RB时域上导频符号的位置为(1,5,9,13)或(2,6,10,14)或者(3,7,11,14)等。
再如，当载波频率为6GHz，子载波间隔为15KHz，第一设备与第二设备的相对速度为500km/h时，基站可以得到该RB时域上导频符号的位置为(1,3,5,7，9，11,13)或(2,4,6,8,10,12,14)等。
例如，当载波频率为6GHz，子载波间隔为30KHz，第一设备与第二设备的相对速度为3km/h时，基站可以得到该RB在时域上导频符号的位置为28个OFDM符号中的任一一个OFDM符号。
当载波频率为6GHz，子载波间隔为30KHz，第一设备与第二设备的相对速度为140km/h时，基站可以得到该RB在时域上导频符号的位置为(1,15)或(2，16)等。
再如，当载波频率为6GHz，子载波间隔为30KHz，第一设备与第二设备的相对速度为240km/h时，基站可以得到该RB时域上导频符号的位置为(1,9,17,21)或(2,10，18,26)或者(3,11,19,27)等。
再如，当载波频率为6GHz，子载波间隔为30KHz，第一设备与第二设备的相对速度为500km/h时，基站可以得到该RB时域上导频符号的位置为(1,5,9,13,17,21,25)或(2,6,10,14,18,22,26)等。
例如，当载波频率为6GHz，子载波间隔为60KHz，第一设备与第二设备的相对速度为3km/h时，基站可以得到该RB在时域上导频符号的位置为56个OFDM符号中的任一一个OFDM符号。
当载波频率为6GHz，子载波间隔为60KHz，第一设备与第二设备的相对速度为140km/h时，基站可以得到该RB在时域上导频符号的位置为(1,29)或(2，30)等。
再如，当载波频率为6GHz，子载波间隔为60KHz，第一设备与第二设备的相对速度为240km/h时，基站可以得到该RB时域上导频符号的位置为(1,17,33,49)或(2,18,34,50)或者(3,19,35,51)等。
再如，当载波频率为6GHz，子载波间隔为60KHz，第一设备与第二设备的相对速度为500km/h时，基站可以得到该RB时域上导频符号的位置为(1,9,17,25,33,41,49)或(2,10,18,26,34,42,50)等。
例如，当载波频率为30GHz，子载波间隔为15KHz，第一设备与第二设备的相对速度为3km/h时，基站可以得到该RB在时域上导频符号的位置为14个OFDM符号中的任一一个OFDM符号。
当载波频率为30GHz，子载波间隔为15KHz，第一设备与第二设备的相对速度为140km/h时，基站可以得到该RB在时域上导频符号的位置为(1，3,5,7,9,11,13)或(2,4,6,8,10,12,14)等。
再如，当载波频率为30GHz，子载波间隔为15KHz，第一设备与第二设备的相对速度为240km/h时，基站可以得到该RB时域上导频符号的位置为(1,2,3,4,5,6,7,8,9,10,11,12,13,14)等。
再如，当载波频率为30GHz，子载波间隔为15KHz，第一设备与第二设备的相对速度为500km/h时，基站可以得到该RB时域上导频符号的位置为(1,2,3,4,5,6,7,8,9,10,11,12,13,14)等。
例如，当载波频率为30GHz，子载波间隔为30KHz，第一设备与第二设备的相对速度为3km/h时，基站可以得到该RB在时域上导频符号的位置为28个OFDM符号中的任一一个OFDM符号。
当载波频率为30GHz，子载波间隔为30KHz，第一设备与第二设备的相对速度为140km/h时，基站可以得到该RB在时域上导频符号的位置为(1,5,9,13,17,21,25)或(2,6,10,14,18,22,26)等。
再如，当载波频率为30GHz，子载波间隔为30KHz，第一设备与第二设备的相对速度为240km/h时，基站可以得到该RB时域上导频符号的位置为(1,3,5,7,9,11,13,15,17,19,21,23,25,27)或(2,4,6,8,10,12,14,16,18,20,22,24,26,28)等。
再如，当载波频率为30GHz，子载波间隔为30KHz，第一设备与第二设备的相对速度为500km/h时，基站可以得到该RB时域上导频符号的位置为(1-28)。
例如，当载波频率为30GHz，子载波间隔为60KHz，第一设备与第二设备的相对速度为3km/h时，基站可以得到该RB在时域上导频符号的位置为56个OFDM符号中的任一一个OFDM符号。
当载波频率为30GHz，子载波间隔为60KHz，第一设备与第二设备的相对速度为140km/h时，基站可以得到该RB在时域上导频符号的位置为(1,9，17,25,33,41,49)或者(2,10,18,26,34,42,50)。
再如，当载波频率为30GHz，子载波间隔为60KHz，第一设备与第二设备的相对速度为240km/h时，基站可以得到该RB时域上导频符号的位置为(1,5,9,13,17,21,25,29,33,37,41,45,49,53)或者，(2,6,10,14,18,22,26,30,34,38,42,46,50,54)等。
再如，当载波频率为30GHz，子载波间隔为60KHz，第一设备与第二设备的相对速度为500km/h时，基站可以得到该RB时域上导频符号的位置为每两个OFDM符号中有一个，在此不再举例。
例如，当载波频率为30GHz，子载波间隔为120KHz，第一设备与第二设备的相对速度为3km/h时，基站可以得到该RB在时域上导频符号的位置为112 个OFDM符号中的任一一个OFDM符号。
当载波频率为30GHz，子载波间隔为120KHz，第一设备与第二设备的相对速度为140km/h时，基站可以得到该RB时域上导频符号的位置为每16个OFDM符号中有一个，在此不再举例。
再如，当载波频率为30GHz，子载波间隔为120KHz，第一设备与第二设备的相对速度为240km/h时，基站可以得到该RB时域上导频符号的位置为每8个OFDM符号中有一个，在此不再举例。
再如，当载波频率为30GHz，子载波间隔为120KHz，第一设备与第二设备的相对速度为500km/h时，基站可以得到该RB时域上导频符号的位置为每4个OFDM符号中有一个，在此不再举例。
例如，当载波频率为63GHz，子载波间隔为15KHz，第一设备与第二设备的相对速度为3km/h时，基站可以得到该RB在时域上导频符号的位置为14个OFDM符号中的任一一个OFDM符号。
当载波频率为63GHz，子载波间隔为15KHz，第一设备与第二设备的相对速度为140km/h时，基站可以得到该RB在时域上导频符号的位置为(1,2,3,4,5,6,7,8,9,10,11,12,13,14)等。
再如，当载波频率为63GHz，子载波间隔为15KHz，第一设备与第二设备的相对速度为240km/h时，基站可以得到该RB时域上导频符号的位置为(1,2,3,4,5,6,7,8,9,10,11,12,13,14)等。
再如，当载波频率为63GHz，子载波间隔为15KHz，第一设备与第二设备的相对速度为500km/h时，基站可以得到该RB时域上导频符号的位置为(1,2,3,4,5,6,7,8,9,10,11,12,13,14)等。
例如，当载波频率为63GHz，子载波间隔为30KHz，第一设备与第二设备的相对速度为3km/h时，基站可以得到该RB在时域上导频符号的位置为28个OFDM符号中的任一一个OFDM符号。
当载波频率为63GHz，子载波间隔为30KHz，第一设备与第二设备的相对速度为140km/h时，基站可以得到该RB时域上导频符号的位置为每两个OFDM符号中有一个，在此不再举例。
再如，当载波频率为63GHz，子载波间隔为30KHz，第一设备与第二设备的相对速度为240km/h时，基站可以得到该RB时域上导频符号的位置为(1-28) 等。
再如，当载波频率为63GHz，子载波间隔为30KHz，第一设备与第二设备的相对速度为500km/h时，基站可以得到该RB时域上导频符号的位置为(1-28)。
例如，当载波频率为63GHz，子载波间隔为60KHz，第一设备与第二设备的相对速度为3km/h时，基站可以得到该RB在时域上导频符号的位置为56个OFDM符号中的任一一个OFDM符号。
当载波频率为63GHz，子载波间隔为60KHz，第一设备与第二设备的相对速度为140km/h时，基站可以得到该RB时域上导频符号的位置为每四个OFDM符号中有一个，在此不再举例。
再如，当载波频率为63GHz，子载波间隔为60KHz，第一设备与第二设备的相对速度为240km/h时，基站可以得到该RB时域上导频符号的位置为每两个OFDM符号中有一个，在此不再举例。
再如，当载波频率为63GHz，子载波间隔为60KHz，第一设备与第二设备的相对速度为500km/h时，基站可以得到该RB时域上导频符号的位置为(1-56)等。
例如，当载波频率为63GHz，子载波间隔为120KHz，第一设备与第二设备的相对速度为3km/h时，基站可以得到该RB在时域上导频符号的位置为112个OFDM符号中的任一一个OFDM符号。
当载波频率为63GHz，子载波间隔为120KHz，第一设备与第二设备的相对速度为140km/h时，基站可以得到该RB时域上导频符号的位置为每8个OFDM符号中有一个，在此不再举例。
再如，当载波频率为63GHz，子载波间隔为120KHz，第一设备与第二设备的相对速度为240km/h时，基站可以得到该RB时域上导频符号的位置为每4个OFDM符号中有一个，在此不再举例。
再如，当载波频率为63GHz，子载波间隔为120KHz，第一设备与第二设备的相对速度为500km/h时，基站可以得到该RB时域上导频符号的位置为每2个OFDM符号中有一个，在此不再举例。
在另一个可能的实现方式中，基站也可以只根据载波频率为6GHz来确定，相应的，在载波频率为6GHz时，基站可以在该RB在频域上的4个RE中选择1个RE设置为导频，在时域上14个OFDM符号中有7个导频符号。例如， 在频域上选择第4，8，12个RE，在时域上导频符号的位置为(2,4,6,8,10,12,14)或者(1,3,5,7,9,11,13)，如图12所示。在载波频率为30GHz及63GHz时，基站可以在该RB在频域上的4个RE中选择1个RE设置为导频，在时域上14个OFDM符号中有14个导频符号，如图13所示。
其中，基站基于选择的第一导频分布和选择的第二导频分布，在该RB中配置至少一个导频符号和第一设备根据第一导频分布和第二导频分布，在该RB中配置至少一个导频符号，确定至少一个导频符号的标识的步骤相同，在此不再赘述。
在本公开实施例中，基站根据该配置请求中携带的载波频率、子载波间隔和相对速度，确定至少一个导频符号的标识为最匹配配置方案，从而提高了信道估计的准确性。基站仅根据该配置请求中携带的载波频率确定的至少一个导频符号的标识时，能够提高配置效率。
在步骤1105中，基站向第一设备返回至少一个导频符号的标识。
在步骤1106中，第一设备接收基站返回的至少一个导频符号的标识，并根据标识对目标RE进行配置，确定至少一个导频符号。
在步骤1107中，第一设备根据确定的至少一个导频符号，对当前信道进行估计。
本步骤和步骤607中的步骤相同，在此不再赘述。
在本公开实施例中，根据载波频率、子载波间隔和相对速度，在RB中确定至少一个导频符号，由于考虑了载波频率和相对速度，因此设置出的导频符号与载波频率和相对速度匹配，提高了确定出导频符号的准确性，进而提高了信道估计的准确性。
图14是根据另一示例性实施例示出的一种信道估计的装置的框图。所述装置应用于第一设备，用于执行上述信道估计方法中的第一设备执行的步骤，参见图14，所述装置包括：
第一确定模块1401，用于当所述第一设备与第二设备之间传输第一消息时，确定承载所述第一消息的资源组RB；
第二确定模块1402，用于根据所述RB包括的子载波的载波频率和子载波间隔，以及，所述第一设备与所述第二设备之间的相对速度，在所述RB中确 定至少一个导频符号；
估计模块1403，用于基于所述至少一个导频符号，对当前信道进行估计。
在一个可能的实现方式中，所述第二确定模块1402，还用于根据所述载波频率和所述子载波间隔，确定所述RB中的导频符号在频域上的第一导频分布，以及根据所述载波频率、子载波间隔和所述相对速度，确定所述RB中的导频符号在时域上的第二导频分布；根据所述第一导频分布和所述第二导频分布，在所述RB上设置至少一个导频符号。
在一个可能的实现方式中，所述第二确定模块1402，还用于根据所述载波频率和所述子载波间隔，从已存储的第一通信协议中获取所述RB中的导频符号在频域上的第一导频分布，所述第一通信协议中存储载波频率、子载波间隔和第一导频分布的对应关系；以及，根据所述载波频率、所述子载波间隔和所述相对速度，从已存储的第二通信协议中获取所述RB中的导频符号在时域上的第二导频分布，所述第二通信协议中存储载波频率、子载波间隔、相对速度范围和第二导频分布的对应关系。
在一个可能的实现方式中，所述第二确定模块1402，还用于向基站发送查询请求，所述查询请求携带所述载波频率、所述子载波间隔和所述相对速度，所述查询请求用于所述基站根据所述载波频率和所述子载波间隔，确定所述RB中的导频符号在频域上的第一导频分布，以及根据所述载波频率、所述子载波间隔和所述相对速度，确定所述RB中的导频符号在时域上的第二导频分布；接收所述基站返回的所述第一导频分布和所述第二导频分布。
在一个可能的实现方式中，所述估计模块1403，还用于确定所述当前信道在时域上所占用的符号数目；根据所述符号数目和所述RB包括的子载波数目，在所述RB上确定多个目标资源块RE；基于所述多个目标RE中的至少一个导频符号，对所述当前信道进行估计。
在一个可能的实现方式中，所述装置还包括：
第一发送模块，用于向基站发送获取请求，所述获取请求用于获取所述第一通信协议和所述第二通信协议；
第一接收模块，用于接收所述基站返回的所述第一通信协议和所述第二通信协议。
在一个可能的实现方式中，所述第二确定模块1402，还用于向基站发送配 置请求，所述配置请求携带所述载波频率、所述子载波间隔和所述相对速度，所述配置请求用于所述基站基于所述载波频率、所述子载波间隔和所述相对速度在所述RB中配置至少一个导频符号；接收所述基站返回的所述至少一个导频符号的标识；基于所述至少一个导频符号的标识，在所述RB中确定所述至少一个导频符号。
在本公开实施例中，根据载波频率、子载波间隔和相对速度，在RB中确定至少一个导频符号，由于考虑了载波频率和相对速度，因此设置出的导频符号与载波频率和相对速度匹配，提高了确定出导频符号的准确性，进而提高了信道估计的准确性。
图15是根据另一示例性实施例示出的一种信道估计的装置的框图。所述装置应用于基站，用于执行上述信道估计方法中的基站执行的步骤，参见图15，所述装置包括：
分配模块1501，用于当第一设备与第二设备之间传输第一消息时，为所述第一设备分配承载所述第一消息的资源组RB；
第三确定模块1502，用于根据所述RB包括的子载波的载波频率和子载波间隔，以及所述第一设备与所述第二设备之间的相对速度，在所述RB中确定至少一个导频符号的分布信息；
第二发送模块1503，用于向所述第一设备返回所述至少一个导频符号的分布信息，所述分布信息用于所述第一设备在所述RB中确定所述至少一个导频符号，并基于所述至少一个导频符号，对当前信道进行估计。
在一个可能的实现方式中，所述分布信息包括第一导频分布和第二导频分布，所述第三确定模块1502，还用于接收所述第一设备发送的查询请求，所述查询请求携带所述载波频率、所述子载波间隔和所述相对速度；根据所述载波频率和所述子载波间隔，确定所述RB中的导频符号在频域上的第一导频分布；根据所述载波频率和所述相对速度，确定所述RB中的导频符号在时域上的第二导频分布。
在一个可能的实现方式中，所述分布信息包括导频符号的标识，所述第三确定模块1502，还用于接收所述第一设备发送的配置请求，所述配置请求携带所述载波频率、所述子载波间隔和所述相对速度；根据所述载波频率和所述子 载波间隔，确定所述RB中的导频符号在频域上的第一导频分布；根据所述载波频率、子载波间隔和所述相对速度，确定所述RB中的导频符号在时域上的第二导频分布；根据所述第一导频分布和所述第二导频分布，在所述RB上设置至少一个导频符号；确定所述至少一个导频符号的标识。
在本公开实施例中，根据载波频率、子载波间隔和相对速度，在RB中确定至少一个导频符号，由于考虑了载波频率和相对速度，因此设置出的导频符号与载波频率和相对速度匹配，提高了确定出导频符号的准确性，进而提高了信道估计的准确性。
图16是根据另一示例性实施例示出的一种信道估计的装置的框图。所述装置应用于基站，用于执行上述信道估计方法中的基站执行的步骤，参见图16，所述装置包括：
第二接收模块1601，用于接收第一设备发送的获取请求，所述获取请求用于获取所述第一通信协议和所述第二通信协议，所述第一通信协议中存储载波频率、子载波间隔和第一导频分布的对应关系，所述第二通信协议中存储载波频率、子载波间隔、相对速度范围和第二导频分布的对应关系；
第三发送模块1602，用于向所述第一设备返回所述第一通信协议和所述第二通信协议，以使所述第一设备基于所述第一通信协议和所述第二通信协议在承载第一消息的资源组RB中确定至少一个导频符号，并基于所述至少一个导频符号，对当前信道进行估计，所述第一消息为所述第一设备与第二设备之间传输的消息。
在一个可能的实现方式中，所述装置还包括：
第四确定模块，用于确定多个样本载波频率、多个样本子载波间隔以及多个样本相对速度；根据所述多个样本载波频率和多个样本子载波间隔，确定多个样本第一导频分布，以及根据所述多个样本载波频率和所述多个样本相对速度，确定多个样本第二导频分布；
生成模块，用于基于所述多个样本载波频率、所述多个样本子载波间隔和所述多个样本第一导频分布生成第一通信协议，以及基于所述多个样本载波频率、所述样本子载波间隔、所述多个样本相对速度对应的多个相对速度范围和所述多个样本第二导频分布，生成第二通信协议。
在本公开实施例中，根据载波频率、子载波间隔和相对速度，在RB中确定至少一个导频符号，由于考虑了载波频率和相对速度，因此设置出的导频符号与载波频率和相对速度匹配，提高了确定出导频符号的准确性，进而提高了信道估计的准确性。
需要说明的是：上述实施例提供的信道估计装置在显示通知栏消息时，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将装置的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。另外，上述实施例提供的信道估计装置与信道估计方法实施例属于同一构思，其具体实现过程详见方法实施例，这里不再赘述。
图17是根据一示例性实施例示出的一种信道估计装置1700的框图。例如，装置1700可以是移动电话，计算机，数字广播终端，消息收发设备，游戏控制台，平板设备，医疗设备，健身设备，个人数字助理等。
参照图17，装置1700可以包括以下一个或多个组件：处理组件1702，存储器1704，电源组件1706，多媒体组件1708，音频组件1710，输入/输出(I/O)的接口1712，传感器组件1714，以及通信组件1716。
处理组件1702通常控制装置1700的整体操作，诸如与显示，电话呼叫，数据通信，相机操作和记录操作相关联的操作。处理组件1702可以包括一个或多个处理器1720来执行指令，以完成上述的方法的全部或部分步骤。此外，处理组件1702可以包括一个或多个模块，便于处理组件1702和其他组件之间的交互。例如，处理组件1702可以包括多媒体模块，以方便多媒体组件1708和处理组件1702之间的交互。
存储器1704被配置为存储各种类型的数据以支持在装置1700的操作。这些数据的示例包括用于在装置1700上操作的任何应用程序或方法的指令，联系人数据，电话簿数据，消息，图片，视频等。存储器1704可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，如静态随机存取存储器(SRAM)，电可擦除可编程只读存储器(EEPROM)，可擦除可编程只读存储器(EPROM)，可编程只读存储器(PROM)，只读存储器(ROM)，磁存储器， 快闪存储器，磁盘或光盘。
电源组件1706为装置1700的各种组件提供电力。电源组件1706可以包括电源管理系统，一个或多个电源，及其他与为装置1700生成、管理和分配电力相关联的组件。
多媒体组件1708包括在所述装置1700和用户之间的提供一个输出接口的屏幕。在一些实施例中，屏幕可以包括液晶显示器(LCD)和触摸面板(TP)。如果屏幕包括触摸面板，屏幕可以被实现为触摸屏，以接收来自用户的输入信号。触摸面板包括一个或多个触摸传感器以感测触摸、滑动和触摸面板上的手势。所述触摸传感器可以不仅感测触摸或滑动动作的边界，而且还检测与所述触摸或滑动操作相关的持续时间和压力。在一些实施例中，多媒体组件1708包括一个前置摄像头和/或后置摄像头。当装置1700处于操作模式，如拍摄模式或视频模式时，前置摄像头和/或后置摄像头可以接收外部的多媒体数据。每个前置摄像头和后置摄像头可以是一个固定的光学透镜系统或具有焦距和光学变焦能力。
音频组件1710被配置为输出和/或输入音频信号。例如，音频组件1710包括一个麦克风(MIC)，当装置1700处于操作模式，如呼叫模式、记录模式和语音识别模式时，麦克风被配置为接收外部音频信号。所接收的音频信号可以被进一步存储在存储器1704或经由通信组件1716发送。在一些实施例中，音频组件1710还包括一个扬声器，用于输出音频信号。
I/O接口1712为处理组件1702和外围接口模块之间提供接口，上述外围接口模块可以是键盘，点击轮，按钮等。这些按钮可包括但不限于：主页按钮、音量按钮、启动按钮和锁定按钮。
传感器组件1714包括一个或多个传感器，用于为装置1700提供各个方面的状态评估。例如，传感器组件1714可以检测到装置1700的打开/关闭状态，组件的相对定位，例如所述组件为装置1700的显示器和小键盘，传感器组件1714还可以检测装置1700或装置1700一个组件的位置改变，用户与装置1700接触的存在或不存在，装置1700方位或加速/减速和装置1700的温度变化。传感器组件1714可以包括接近传感器，被配置用来在没有任何的物理接触时检测附近物体的存在。传感器组件1714还可以包括光传感器，如CMOS或CCD图像传感器，用于在成像应用中使用。在一些实施例中，该传感器组件1714 还可以包括加速度传感器，陀螺仪传感器，磁传感器，压力传感器或温度传感器。
通信组件1716被配置为便于装置1700和其他设备之间有线或无线方式的通信。装置1700可以接入基于通信标准的无线网络，如WiFi，2G或3G，或它们的组合。在一个示例性实施例中，通信组件1716经由广播信道接收来自外部广播管理系统的广播信号或广播相关消息。在一个示例性实施例中，所述通信组件1716还包括近场通信(NFC)模块，以促进短程通信。例如，在NFC模块可基于射频识别(RFID)技术，红外数据协会(IrDA)技术，超宽带(UWB)技术，蓝牙(BT)技术和其他技术来实现。
在示例性实施例中，装置1700可以被一个或多个应用专用集成电路(ASIC)、数字信号处理器(DSP)、数字信号处理设备(DSPD)、可编程逻辑器件(PLD)、现场可编程门阵列(FPGA)、控制器、微控制器、微处理器或其他电子元件实现，用于执行上述信道估计方法。
在示例性实施例中，还提供了一种包括指令的非临时性计算机可读存储介质，例如包括指令的存储器1704，上述指令可由装置1700的处理器1720执行以完成上述方法。例如，所述非临时性计算机可读存储介质可以是ROM、随机存取存储器(RAM)、CD-ROM、磁带、软盘和光数据存储设备等。
图18是本发明实施例提供的一种基站的结构示意图，该基站1800可因配置或性能不同而产生比较大的差异，可以包括一个或一个以上处理器(central processing units，CPU)1801和一个或一个以上的存储器1802，其中，所述存储器1802中存储有至少一条指令，所述至少一条指令由所述处理器1801加载并执行以实现上述各个方法实施例提供的方法。当然，该基站还可以具有有线或无线网络接口、键盘以及输入输出接口等部件，以便进行输入输出，该基站还可以包括其他用于实现设备功能的部件，在此不做赘述。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本公开的其它实施方案。本申请旨在涵盖本公开的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开 的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本公开的真正范围和精神由下面的权利要求指出。
应当理解的是，本公开并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本公开的范围仅由所附的权利要求来限制。

Claims (30)

  1. 一种信道估计方法，其特征在于，所述方法应用于第一设备，所述方法包括：
    当所述第一设备与第二设备之间传输第一消息时，确定承载所述第一消息的资源组RB；
    根据所述RB包括的子载波的载波频率和子载波间隔，以及，所述第一设备与所述第二设备之间的相对速度，在所述RB中确定至少一个导频符号；
    基于所述至少一个导频符号，对当前信道进行估计。
  2. 根据权利要求1所述的方法，其特征在于，所述根据所述RB包括的子载波的载波频率和子载波间隔，以及，所述第一设备与所述第二设备之间的相对速度，在所述RB中确定至少一个导频符号，包括：
    根据所述载波频率和所述子载波间隔，确定所述RB中的导频符号在频域上的第一导频分布，以及根据所述载波频率、子载波间隔和所述相对速度，确定所述RB中的导频符号在时域上的第二导频分布；
    根据所述第一导频分布和所述第二导频分布，在所述RB上设置至少一个导频符号。
  3. 根据权利要求2所述的方法，其特征在于，所述根据所述载波频率和所述子载波间隔，确定所述RB中的导频符号在频域上的第一导频分布，以及根据所述载波频率、子载波间隔和所述相对速度，确定所述RB中的导频符号在时域上的第二导频分布，包括：
    根据所述载波频率和所述子载波间隔，从已存储的第一通信协议中获取所述RB中的导频符号在频域上的第一导频分布，所述第一通信协议中存储载波频率、子载波间隔和第一导频分布的对应关系；以及，
    根据所述载波频率、所述子载波间隔和所述相对速度，从已存储的第二通信协议中获取所述RB中的导频符号在时域上的第二导频分布，所述第二通信协议中存储载波频率、子载波间隔、相对速度范围和第二导频分布的对应关系。
  4. 根据权利要求2所述的方法，其特征在于，所述根据所述载波频率和所述子载波间隔，确定所述RB中的导频符号在频域上的第一导频分布，以及根据 所述载波频率和所述相对速度，确定所述RB中的导频符号在时域上的第二导频分布，包括：
    向基站发送查询请求，所述查询请求携带所述载波频率、所述子载波间隔和所述相对速度，所述查询请求用于所述基站根据所述载波频率和所述子载波间隔，确定所述RB中的导频符号在频域上的第一导频分布，以及根据所述载波频率、所述子载波间隔和所述相对速度，确定所述RB中的导频符号在时域上的第二导频分布；
    接收所述基站返回的所述第一导频分布和所述第二导频分布。
  5. 根据权利要求1所述的方法，其特征在于，所述基于所述至少一个导频符号，对当前信道进行估计，包括：
    确定所述当前信道在时域上所占用的符号数目；
    根据所述符号数目和所述RB包括的子载波数目，在所述RB上确定多个目标资源块RE；
    基于所述多个目标RE中的至少一个导频符号，对所述当前信道进行估计。
  6. 根据权利要求3所述的方法，其特征在于，所述根据所述载波频率和所述子载波间隔，从已存储的第一通信协议中获取所述RB中的导频符号在频域上的第一导频分布之前，所述方法还包括：
    向基站发送获取请求，所述获取请求用于获取所述第一通信协议和所述第二通信协议；
    接收所述基站返回的所述第一通信协议和所述第二通信协议。
  7. 根据权利要求1所述的方法，其特征在于，所述根据所述RB包括的子载波的载波频率和子载波间隔，以及，所述第一设备与所述第二设备之间的相对速度，在所述RB中确定至少一个导频符号，包括：
    向基站发送配置请求，所述配置请求携带所述载波频率、所述子载波间隔和所述相对速度，所述配置请求用于所述基站基于所述载波频率、所述子载波间隔和所述相对速度在所述RB中配置至少一个导频符号；
    接收所述基站返回的所述至少一个导频符号的标识；
    基于所述至少一个导频符号的标识，在所述RB中确定所述至少一个导频符 号。
  8. 一种信道估计方法，其特征在于，所述方法应用于基站，所述方法包括：
    当第一设备与第二设备之间传输第一消息时，为所述第一设备分配承载所述第一消息的资源组RB；
    根据所述RB包括的子载波的载波频率和子载波间隔，以及所述第一设备与所述第二设备之间的相对速度，在所述RB中确定至少一个导频符号的分布信息；
    向所述第一设备返回所述至少一个导频符号的分布信息，所述分布信息用于所述第一设备在所述RB中确定所述至少一个导频符号，并基于所述至少一个导频符号，对当前信道进行估计。
  9. 根据权利要求8所述的方法，其特征在于，所述分布信息包括第一导频分布和第二导频分布，所述根据所述RB包括的子载波的载波频率和子载波间隔，以及所述第一设备与所述第二设备之间的相对速度，在所述RB中确定至少一个导频符号的分布信息，包括：
    接收所述第一设备发送的查询请求，所述查询请求携带所述载波频率、所述子载波间隔和所述相对速度；
    根据所述载波频率和所述子载波间隔，确定所述RB中的导频符号在频域上的第一导频分布；
    根据所述载波频率和所述相对速度，确定所述RB中的导频符号在时域上的第二导频分布。
  10. 根据权利要求8所述的方法，其特征在于，所述分布信息包括导频符号的标识，所述根据所述RB包括的子载波的载波频率和子载波间隔，以及所述第一设备与所述第二设备之间的相对速度，在所述RB中确定至少一个导频符号的分布信息，包括：
    接收所述第一设备发送的配置请求，所述配置请求携带所述载波频率、所述子载波间隔和所述相对速度；
    根据所述载波频率和所述子载波间隔，确定所述RB中的导频符号在频域上的第一导频分布；
    根据所述载波频率、子载波间隔和所述相对速度，确定所述RB中的导频符 号在时域上的第二导频分布；
    根据所述第一导频分布和所述第二导频分布，在所述RB上设置至少一个导频符号；
    确定所述至少一个导频符号的标识。
  11. 一种信道估计方法，其特征在于，所述方法应用于基站，所述方法包括：
    接收第一设备发送的获取请求，所述获取请求用于获取所述第一通信协议和所述第二通信协议，所述第一通信协议中存储载波频率、子载波间隔和第一导频分布的对应关系，所述第二通信协议中存储载波频率、子载波间隔、相对速度范围和第二导频分布的对应关系；
    向所述第一设备返回所述第一通信协议和所述第二通信协议，以使所述第一设备基于所述第一通信协议和所述第二通信协议在承载第一消息的资源组RB中确定至少一个导频符号，并基于所述至少一个导频符号，对当前信道进行估计，所述第一消息为所述第一设备与第二设备之间传输的消息。
  12. 根据权利要求11所述的方法，其特征在于，所述方法还包括：
    确定多个样本载波频率、多个样本子载波间隔以及多个样本相对速度；
    根据所述多个样本载波频率和多个样本子载波间隔，确定多个样本第一导频分布，以及根据所述多个样本载波频率和所述多个样本相对速度，确定多个样本第二导频分布；
    基于所述多个样本载波频率、所述多个样本子载波间隔和所述多个样本第一导频分布生成第一通信协议，以及基于所述多个样本载波频率、所述样本子载波间隔、所述多个样本相对速度对应的多个相对速度范围和所述多个样本第二导频分布，生成第二通信协议。
  13. 一种信道估计装置，其特征在于，所述装置应用于第一设备，所述装置包括：
    第一确定模块，用于当所述第一设备与第二设备之间传输第一消息时，确定承载所述第一消息的资源组RB；
    第二确定模块，用于根据所述RB包括的子载波的载波频率和子载波间隔， 以及，所述第一设备与所述第二设备之间的相对速度，在所述RB中确定至少一个导频符号；
    估计模块，用于基于所述至少一个导频符号，对当前信道进行估计。
  14. 根据权利要求13所述的装置，其特征在于，所述第二确定模块，还用于根据所述载波频率和所述子载波间隔，确定所述RB中的导频符号在频域上的第一导频分布，以及根据所述载波频率、子载波间隔和所述相对速度，确定所述RB中的导频符号在时域上的第二导频分布；根据所述第一导频分布和所述第二导频分布，在所述RB上设置至少一个导频符号。
  15. 根据权利要求14所述的装置，其特征在于，所述第二确定模块，还用于根据所述载波频率和所述子载波间隔，从已存储的第一通信协议中获取所述RB中的导频符号在频域上的第一导频分布，所述第一通信协议中存储载波频率、子载波间隔和第一导频分布的对应关系；以及，根据所述载波频率、所述子载波间隔和所述相对速度，从已存储的第二通信协议中获取所述RB中的导频符号在时域上的第二导频分布，所述第二通信协议中存储载波频率、子载波间隔、相对速度范围和第二导频分布的对应关系。
  16. 根据权利要求14所述的装置，其特征在于，所述第二确定模块，还用于向基站发送查询请求，所述查询请求携带所述载波频率、所述子载波间隔和所述相对速度，所述查询请求用于所述基站根据所述载波频率和所述子载波间隔，确定所述RB中的导频符号在频域上的第一导频分布，以及根据所述载波频率、所述子载波间隔和所述相对速度，确定所述RB中的导频符号在时域上的第二导频分布；接收所述基站返回的所述第一导频分布和所述第二导频分布。
  17. 根据权利要求13所述的装置，其特征在于，所述估计模块，还用于确定所述当前信道在时域上所占用的符号数目；根据所述符号数目和所述RB包括的子载波数目，在所述RB上确定多个目标资源块RE；基于所述多个目标RE中的至少一个导频符号，对所述当前信道进行估计。
  18. 根据权利要求15所述的装置，其特征在于，所述装置还包括：
    第一发送模块，用于向基站发送获取请求，所述获取请求用于获取所述第一通信协议和所述第二通信协议；
    第一接收模块，用于接收所述基站返回的所述第一通信协议和所述第二通信协议。
  19. 根据权利要求15所述的装置，其特征在于，
    所述第二确定模块，还用于向基站发送配置请求，所述配置请求携带所述载波频率、所述子载波间隔和所述相对速度，所述配置请求用于所述基站基于所述载波频率、所述子载波间隔和所述相对速度在所述RB中配置至少一个导频符号；接收所述基站返回的所述至少一个导频符号的标识；基于所述至少一个导频符号的标识，在所述RB中确定所述至少一个导频符号。
  20. 一种信道估计的装置，其特征在于，所述装置应用于基站，所述装置包括：
    分配模块，用于当第一设备与第二设备之间传输第一消息时，为所述第一设备分配承载所述第一消息的资源组RB；
    第三确定模块，用于根据所述RB包括的子载波的载波频率和子载波间隔，以及所述第一设备与所述第二设备之间的相对速度，在所述RB中确定至少一个导频符号的分布信息；
    第二发送模块，用于向所述第一设备返回所述至少一个导频符号的分布信息，所述分布信息用于所述第一设备在所述RB中确定所述至少一个导频符号，并基于所述至少一个导频符号，对当前信道进行估计。
  21. 根据权利要求20所述的装置，其特征在于，所述分布信息包括第一导频分布和第二导频分布，所述第三确定模块，还用于接收所述第一设备发送的查询请求，所述查询请求携带所述载波频率、所述子载波间隔和所述相对速度；根据所述载波频率和所述子载波间隔，确定所述RB中的导频符号在频域上的第一导频分布；根据所述载波频率和所述相对速度，确定所述RB中的导频符号在时域上的第二导频分布。
  22. 根据权利要求20所述的装置，其特征在于，所述分布信息包括导频符 号的标识，所述第三确定模块，还用于接收所述第一设备发送的配置请求，所述配置请求携带所述载波频率、所述子载波间隔和所述相对速度；根据所述载波频率和所述子载波间隔，确定所述RB中的导频符号在频域上的第一导频分布；根据所述载波频率、子载波间隔和所述相对速度，确定所述RB中的导频符号在时域上的第二导频分布；根据所述第一导频分布和所述第二导频分布，在所述RB上设置至少一个导频符号；确定所述至少一个导频符号的标识。
  23. 一种信道估计的装置，其特征在于，所述装置应用于基站，所述装置包括：
    第二接收模块，用于接收第一设备发送的获取请求，所述获取请求用于获取所述第一通信协议和所述第二通信协议，所述第一通信协议中存储载波频率、子载波间隔和第一导频分布的对应关系，所述第二通信协议中存储载波频率、子载波间隔、相对速度范围和第二导频分布的对应关系；
    第三发送模块，用于向所述第一设备返回所述第一通信协议和所述第二通信协议，以使所述第一设备基于所述第一通信协议和所述第二通信协议在承载第一消息的资源组RB中确定至少一个导频符号，并基于所述至少一个导频符号，对当前信道进行估计，所述第一消息为所述第一设备与第二设备之间传输的消息。
  24. 根据权利要求23所述的装置，其特征在于，所述装置还包：
    第四确定模块，用于确定多个样本载波频率、多个样本子载波间隔以及多个样本相对速度；根据所述多个样本载波频率和多个样本子载波间隔，确定多个样本第一导频分布，以及根据所述多个样本载波频率和所述多个样本相对速度，确定多个样本第二导频分布；
    生成模块，用于基于所述多个样本载波频率、所述多个样本子载波间隔和所述多个样本第一导频分布生成第一通信协议，以及基于所述多个样本载波频率、所述样本子载波间隔、所述多个样本相对速度对应的多个相对速度范围和所述多个样本第二导频分布，生成第二通信协议。
  25. 一种设备，其特征在于，包括：
    处理器；
    用于存储处理器可执行指令的存储器；
    其中，所述处理器被配置为：
    当第一设备与第二设备之间传输第一消息时，确定承载所述第一消息的资源组RB；
    根据所述RB包括的子载波的载波频率和子载波间隔，以及，所述第一设备与所述第二设备之间的相对速度，在所述RB中确定至少一个导频符号；
    基于所述至少一个导频符号，对当前信道进行估计。
  26. 一种基站，其特征在于，包括：
    处理器；
    用于存储处理器可执行指令的存储器；
    其中，所述处理器被配置为：
    当第一设备与第二设备之间传输第一消息时，为所述第一设备分配承载所述第一消息的资源组RB；
    根据所述RB包括的子载波的载波频率和子载波间隔，以及所述第一设备与所述第二设备之间的相对速度，在所述RB中确定至少一个导频符号的分布信息；
    向所述第一设备返回所述至少一个导频符号的分布信息，所述分布信息用于所述第一设备在所述RB中确定所述至少一个导频符号，并基于所述至少一个导频符号，对当前信道进行估计。
  27. 一种基站，其特征在于，包括：
    处理器；
    用于存储处理器可执行指令的存储器；
    其中，所述处理器被配置为：
    接收第一设备发送的获取请求，所述获取请求用于获取所述第一通信协议和所述第二通信协议，所述第一通信协议中存储载波频率、子载波间隔和第一导频分布的对应关系，所述第二通信协议中存储载波频率、子载波间隔、相对速度范围和第二导频分布的对应关系；
    向所述第一设备返回所述第一通信协议和所述第二通信协议，以使所述第一设备基于所述第一通信协议和所述第二通信协议在承载第一消息的资源组RB中确定至少一个导频符号，并基于所述至少一个导频符号，对当前信道进行 估计，所述第一消息为所述第一设备与第二设备之间传输的消息。
  28. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质上存储有指令，所述指令被处理器执行以完成权利要求1-7任一项所述的信道估计方法。
  29. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质上存储有指令，所述指令被处理器执行以完成权利要求8-10任一项所述的信道估计方法。
  30. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质上存储有指令，所述指令被处理器执行以完成权利要求11-12任一项所述的信道估计方法。
PCT/CN2018/101381 2018-08-20 2018-08-20 信道估计方法、装置、设备、基站及存储介质 Ceased WO2020037468A1 (zh)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PCT/CN2018/101381 WO2020037468A1 (zh) 2018-08-20 2018-08-20 信道估计方法、装置、设备、基站及存储介质
US17/269,414 US11848801B2 (en) 2018-08-20 2018-08-20 Channel estimation method and apparatus, device, base station, and storage medium
EP18930809.1A EP3843345A4 (en) 2018-08-20 2018-08-20 METHOD AND APPARATUS FOR CHANNEL ESTIMATION, DEVICE, BASE STATION, AND STORAGE MEDIA
CN201880001073.9A CN109314680B (zh) 2018-08-20 2018-08-20 信道估计方法、装置、设备、基站及存储介质

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/101381 WO2020037468A1 (zh) 2018-08-20 2018-08-20 信道估计方法、装置、设备、基站及存储介质

Publications (1)

Publication Number Publication Date
WO2020037468A1 true WO2020037468A1 (zh) 2020-02-27

Family

ID=65221684

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/101381 Ceased WO2020037468A1 (zh) 2018-08-20 2018-08-20 信道估计方法、装置、设备、基站及存储介质

Country Status (4)

Country Link
US (1) US11848801B2 (zh)
EP (1) EP3843345A4 (zh)
CN (1) CN109314680B (zh)
WO (1) WO2020037468A1 (zh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11784734B2 (en) * 2019-01-14 2023-10-10 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for multi-path delay estimation
EP4278786B1 (en) * 2021-02-25 2025-10-08 Huawei Technologies Co., Ltd. Methods and apparatus for using short reference symbols with a frequency domain offset
CN114337932B (zh) * 2022-03-07 2022-05-27 杭州优智联科技有限公司 基于uwb系统的自适应导频符号发送方法、装置及介质
US20250226940A1 (en) * 2024-01-10 2025-07-10 GM Global Technology Operations LLC Physical resource allocation for mobile wi-fi stations

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105723715A (zh) * 2013-09-27 2016-06-29 Lg电子株式会社 发送广播信号的设备、接收广播信号的设备、发送广播信号的方法以及接收广播信号的方法
US20170086028A1 (en) * 2015-09-18 2017-03-23 Samsung Electronics Co., Ltd Method and apparatus for allocating resources for v2x communication
CN107439036A (zh) * 2015-04-01 2017-12-05 Lg电子株式会社 V2x终端在无线通信系统中发送和接收信号的方法和装置
CN107666452A (zh) * 2017-09-15 2018-02-06 电子科技大学 Lte‑v2x系统的解调参考信号的模式设置方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1190976C (zh) * 2000-01-28 2005-02-23 华为技术有限公司 信道估计中时隙结构的动态调节方法
CN1253032C (zh) * 2003-09-17 2006-04-19 东南大学 基于双循环结构的自适应时隙结构的实现方法
EP1542488A1 (en) 2003-12-12 2005-06-15 Telefonaktiebolaget LM Ericsson (publ) Method and apparatus for allocating a pilot signal adapted to the channel characteristics
CN1859056B (zh) * 2005-10-25 2010-05-05 华为技术有限公司 一种蜂窝通信系统中优化导频的方法和装置
JP4941682B2 (ja) * 2006-04-28 2012-05-30 日本電気株式会社 パイロット信号送信方法、無線通信システム、それらに用いられる装置及びプログラム
US8036190B2 (en) * 2007-02-27 2011-10-11 Industrial Technology Research Institute Methods and devices for allocating data in a wireless communication system
CN101383656A (zh) * 2007-09-05 2009-03-11 中兴通讯股份有限公司 一种基于速度和信道质量指示的优化导频的方法及装置
CN101521530B (zh) * 2008-02-29 2012-10-10 北京大学 一种多用户导频方法及其应用调度方法
CN102223326B (zh) * 2011-06-21 2017-04-05 中兴通讯股份有限公司 一种基于多普勒频移的信道估计方法和装置
CN103052102B (zh) * 2013-01-18 2016-12-28 东莞宇龙通信科技有限公司 终端、基站、信道测量方法、导频图案设置系统与方法
US10791013B2 (en) * 2016-07-28 2020-09-29 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Pilot signal transmission method, terminal equipment, and network equipment
KR20190049864A (ko) 2016-09-23 2019-05-09 후아웨이 테크놀러지 컴퍼니 리미티드 자원 매핑 방법, 송신단 및 수신단
WO2019059739A1 (ko) * 2017-09-24 2019-03-28 엘지전자 주식회사 피드백 정보의 송신 및 수신 방법과 이를 위한 차량체

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105723715A (zh) * 2013-09-27 2016-06-29 Lg电子株式会社 发送广播信号的设备、接收广播信号的设备、发送广播信号的方法以及接收广播信号的方法
CN107439036A (zh) * 2015-04-01 2017-12-05 Lg电子株式会社 V2x终端在无线通信系统中发送和接收信号的方法和装置
US20170086028A1 (en) * 2015-09-18 2017-03-23 Samsung Electronics Co., Ltd Method and apparatus for allocating resources for v2x communication
CN107666452A (zh) * 2017-09-15 2018-02-06 电子科技大学 Lte‑v2x系统的解调参考信号的模式设置方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3843345A4 *

Also Published As

Publication number Publication date
CN109314680A (zh) 2019-02-05
EP3843345A1 (en) 2021-06-30
CN109314680B (zh) 2021-10-15
US20210258193A1 (en) 2021-08-19
US11848801B2 (en) 2023-12-19
EP3843345A4 (en) 2021-09-08

Similar Documents

Publication Publication Date Title
CN113824476B (zh) 发送、接收参考信号的方法、装置、车载设备及终端
CN109076478B (zh) 发送、接收参考信号的方法、装置、车载设备及终端
CN108886788B (zh) 传输信息的方法和装置、基站及用户设备
JP7273948B2 (ja) パラメータセットの取得方法及び装置
WO2020142995A1 (zh) 确定直连链路资源的方法、装置、用户设备及基站
WO2020037468A1 (zh) 信道估计方法、装置、设备、基站及存储介质
WO2020142988A1 (zh) 发现参考信号drs的设置、发送和接收方法及装置
CN106793059A (zh) 发送、获取同步信息块的方法及装置
CN113544996A (zh) 时域窗口确定方法、装置、用户设备、基站及存储介质
WO2020029026A1 (zh) 车联网同步方法及装置
WO2024138569A1 (zh) 资源确定方法及装置、存储介质
WO2020087466A1 (zh) 传输信息的方法、装置、基站及终端
CN115191146A (zh) 多prach传输配置方法、装置
CN109314845A (zh) 车联网同步方法及装置
WO2022036571A1 (zh) 优先级配置方法和装置
WO2020124486A1 (zh) 数据传输方法及装置
WO2022193191A1 (zh) 资源配置方法、装置、终端设备、接入网设备及存储介质
WO2021109085A1 (zh) 通信资源单元分配方法、装置、通信设备及存储介质
CN112544116A (zh) 通信资源分配方法及装置、数据传输方法及装置和接入点
US20240205946A1 (en) Sidelink communication method and apparatus, and storage medium
CN109451862B (zh) 数据传输方法、装置及系统
US20250023689A1 (en) Method and apparatus for transmitting reference signal for positioning, and storage medium
US20250193697A1 (en) Configuration information sending method and apparatus, and configuration determination method and apparatus
EP4727236A1 (en) Information processing method and apparatus, and communication device and storage medium
KR20250150617A (ko) mTRP 전송의 스케줄링 방법, 장치, 통신 디바이스 및 저장 매체

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18930809

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2018930809

Country of ref document: EP

Effective date: 20210322