WO2018028459A1 - 混合波束赋形系统中的信息传输方法及装置 - Google Patents

混合波束赋形系统中的信息传输方法及装置 Download PDF

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WO2018028459A1
WO2018028459A1 PCT/CN2017/095304 CN2017095304W WO2018028459A1 WO 2018028459 A1 WO2018028459 A1 WO 2018028459A1 CN 2017095304 W CN2017095304 W CN 2017095304W WO 2018028459 A1 WO2018028459 A1 WO 2018028459A1
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resource
reference signal
sub
information
demodulation reference
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PCT/CN2017/095304
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English (en)
French (fr)
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弓宇宏
鲁照华
张淑娟
王小鹏
梅猛
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中兴通讯股份有限公司
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Publication of WO2018028459A1 publication Critical patent/WO2018028459A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
    • 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
    • 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
    • H04L27/2613—Structure of the reference signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal

Definitions

  • the present application relates to, but is not limited to, the field of communications, and in particular, to an information transmission method and apparatus in a hybrid beamforming system.
  • the 5G communication system is also referred to as a "post 4G network” or a “post LTE (Long Term Evolution) system.
  • 5G communication systems are considered to be implemented in higher frequency bands (eg, above 3 GHz) in order to achieve higher data rates.
  • the characteristics of high-frequency communication are that it has relatively serious path loss and penetration loss, and its spatial transmission is closely related to the atmosphere. Due to the extremely short wavelength of the high-frequency signal, a large number of small antenna arrays can be applied, so that the beamforming technology can obtain a more accurate beam direction, and the advantages of the narrow beam technology can improve the coverage of the high-frequency signal and compensate for the transmission loss.
  • the traditional LTE system uses baseband precoding for multi-antenna data multiplexing transmission, which can better support multi-stream data transmission, so it can better support space division multiplexing and MIMO (Multiple Input Multiple Output). Transmission scheme, but the disadvantage is that each transmitting antenna needs to correspond to one RF link, and the cost is too high.
  • Radio frequency precoding is also known as radio frequency beamforming or analog beamforming.
  • baseband precoding is also known as baseband digital precoding or digital precoding.
  • FIG. 1 is a schematic diagram of a hybrid beamforming structure. As shown in FIG. 1 , in a hybrid beamforming structure, a radio frequency (RF) link corresponds to an antenna array.
  • RF radio frequency
  • the MIMO transmission technology in LTE only considers digital precoding.
  • the digital precoding codeword indicates The beam is narrower and narrower, so that the coverage area is smaller, and the user's moving position may cause a large performance degradation, that is, the robustness is not so good.
  • the embodiments of the present application provide an information transmission method and apparatus in a hybrid beamforming system, which can improve information transmission robustness.
  • a method for transmitting information in a hybrid beamforming system includes: dividing a first resource granularity into K1 second resource granularities, and respectively using the K1 second resource granularities. Separating the first type of beam transmission information; and dividing each of the second resource granularities into K2 third resource granularities, and respectively using the independent second type of beam transmission information on the K2 third resource granularities;
  • the resource for transmitting the information includes one or more of the first resource granularities, K1 and K2 being positive integers, and at least one of K1 and K2 being greater than one.
  • the first resource granularity may include one or a group of OFDM (Orthogonal Frequency Division Multiplexing) symbols in the time domain, and may include one or a group of subcarriers in the frequency domain;
  • the second resource granularity may include at least one OFDM symbol in the first resource granularity; and the third resource granularity may include at least one subcarrier in the second resource granularity.
  • the foregoing method may include: dividing all the second resource granularity into N1 copies of the second sub-resource. And using N1 different first type beams to transmit information on the N1 second sub-resources respectively; and dividing K2 third resource granularities in each of the second sub-resources into N2 third sub-resources, N2 different second type beam transmission information is respectively used on the N2 third sub-resources; wherein N1 is a positive integer less than or equal to K1, and N2 is a positive integer less than or equal to K2.
  • the above method may further include: in the case of using the N1 first type beams for transmitting information, the i-th second in the K1 second resource granularities in the first specified order
  • the above method may further include: in the case of using the N2 second type beams for transmitting information, the jth third in any one of the second resource granularities in the second specified order
  • the above method may further include: in the case of using the N1 group second type beam for transmitting information, and each group includes N2 second type beams, in the first specified order at the K1
  • the first specified order may be a time domain from front to back.
  • the second specified order may be one of: a frequency domain from low to high; a frequency domain from high to low; a first frequency domain followed by a time domain, and the frequency domain is from low to high or low. To the high, the time domain is from front to back.
  • the information may include information transmitted over a control channel or a data channel.
  • the method may further include: configuring a demodulation reference signal resource for the information, and dividing the demodulation reference signal resource into N1*N2 copies of a first demodulation reference signal sub-resource, The N1*N2 first demodulation reference signal sub-resources respectively have a one-to-one correspondence with the N1*N2 first sub-resources; wherein the demodulation reference signal resources are used to demodulate the information.
  • the position of the demodulation reference signal resource in the time domain is located before the information or at a start position of the information; wherein when the demodulation reference signal resource is located at the beginning of the information In position, the demodulation reference signal resource and the information occupy different subcarriers in the frequency domain, respectively.
  • the demodulation reference signal resource includes M demodulation reference signal ports, where M is a positive integer.
  • the method may further include: dividing the demodulation reference signal resource into N1 copies of a second demodulation reference signal sub-resource, and using the N1 second demodulation reference signal sub-investment Separating the demodulation reference signals by using different first type beams, respectively, and dividing each of the second demodulation reference signal sub-resources into N2 third demodulation reference signal sub-resources, respectively, in the N2 parts
  • the demodulation reference signal is transmitted by using a different second type of beam on the third demodulation reference signal sub-resource.
  • the method may further include: transmitting, by using the same first type of beam and second type of beam, respectively, on the first demodulation reference signal sub-resource and the first sub-resource that have the corresponding relationship
  • the reference signal and the information are demodulated.
  • N1 second demodulation reference signal sub-resource there is a one-to-one correspondence between the N1 second demodulation reference signal sub-resource and the N1 second sub-resource, and the second demodulation reference signal sub-resource with the corresponding relationship exists.
  • N2 third demodulation reference signal sub-resource there is a one-to-one correspondence between the N2 third demodulation reference signal sub-resource and the third sub-resource in the second sub-resource.
  • the method may further include: transmitting, by using the same first type of beam, the demodulation reference signal and the second demodulation reference signal sub-resource and the second sub-resource, respectively, where the corresponding relationship exists.
  • the information may further include: transmitting, by using the same first type of beam, the demodulation reference signal and the second demodulation reference signal sub-resource and the second sub-resource, respectively, where the corresponding relationship exists.
  • the method may further include: transmitting, by using the same second type of beam, the demodulation reference signal and the third demodulation reference signal sub-resource and the third sub-resource, respectively, where the corresponding relationship exists.
  • the information may further include: transmitting, by using the same second type of beam, the demodulation reference signal and the third demodulation reference signal sub-resource and the third sub-resource, respectively, where the corresponding relationship exists.
  • the first resource granularity may be one or more system minimum scheduled time-frequency units.
  • the first resource granularity may not include resource units other than for transmitting information.
  • the first type of beam may be characterized by a first type of beam index
  • the second type of beam may be characterized by a second type of beam index
  • the first type of beam may be an analog beam and the second type of beam may be digital precoding.
  • an information transmission apparatus in a hybrid beamforming system includes: a first transmission module configured to divide a first resource granularity into K1 second resource granularities, and in the The independent first type of beam transmission information is respectively used on the K1 second resource granularities; And the second transmission module is configured to divide each of the second resource granularities into K2 third resource granularities, and use the independent second type of beam transmission information on the K2 third resource granularities respectively;
  • the resource for transmitting the information includes one or more of the first resource granularities, K1 and K2 being positive integers, and at least one of K1 and K2 being greater than one.
  • the first resource granularity may include one or a group of OFDM symbols in a time domain, and may include one or a group of subcarriers in a frequency domain; the second resource granularity may include the first resource. At least one OFDM symbol in the granularity; the third resource granularity may include at least one of the second resource granularity.
  • the first transmission module may be further configured to divide all the second resource granularity into N1 in a case where the first resource granularity is divided into N1*N2 copies of the first sub-resource. a second sub-resource, and respectively using N1 different first-class beam transmission information on the N1 second sub-resource; and the second transmission module may further be configured to each of the second sub-resources
  • the K2 third resource granularity is divided into N2 third sub-resources, and N2 different second-class beam transmission information is respectively used on the N2 third sub-resources; wherein N1 is less than or equal to K1
  • An integer, N2 is a positive integer less than or equal to K2.
  • the first transmission module may be further configured to, in the case of using N1 first class beams for transmitting information, in the first specified order, among the K1 second resource granularities
  • the second transmission module may be further configured to, in the case of using N2 second type beams for transmitting information, in a second specified order, in any one of the second resource granularities
  • the first specified order may be a time domain from front to back.
  • the second specified order may be one of: a frequency domain from low to high; a frequency domain from high to low; a first frequency domain followed by a time domain, and the frequency domain is from low to high or low. To the high, the time domain is from front to back.
  • the information may include information transmitted over a control channel or a data channel.
  • the apparatus may further include: a configuration module configured to configure the demodulation reference signal resource for the information, and divide the demodulation reference signal resource into N1*N2 first demodulation reference signals a sub-resource, wherein the N1*N2 first demodulation reference signal sub-resources have a one-to-one correspondence with the N1*N2 first sub-resources, wherein the demodulation reference signal resource is used for demodulation The information.
  • a configuration module configured to configure the demodulation reference signal resource for the information, and divide the demodulation reference signal resource into N1*N2 first demodulation reference signals a sub-resource, wherein the N1*N2 first demodulation reference signal sub-resources have a one-to-one correspondence with the N1*N2 first sub-resources, wherein the demodulation reference signal resource is used for demodulation The information.
  • a location of the demodulation reference signal resource in a time domain may be located before the information or at a start position of the information; wherein when the demodulation reference signal resource is located in the information When the location is started, the demodulation reference signal resource and the information occupy different subcarriers in the frequency domain, respectively.
  • the demodulation reference signal resource may include M demodulation reference signal ports, where M is a positive integer.
  • the first transmission module may be further configured to divide the demodulation reference signal resource into N1 copies of a second demodulation reference signal sub-resource, where the N1 second demodulation reference signal sub- The demodulation reference signal is transmitted by using different first type beams, and the second transmission module is further configured to divide each of the second demodulation reference signal sub-resources into N2 parts and third demodulation respectively.
  • the demodulation reference signal is transmitted on the N2 third demodulation reference signal sub-resources using different second-class beams, respectively.
  • the demodulation reference signal and the second type beam are transmitted on the first demodulation reference signal sub-resource and the first sub-resource in which the corresponding relationship exists, respectively.
  • Information is transmitted on the first demodulation reference signal sub-resource and the first sub-resource in which the corresponding relationship exists, respectively.
  • N1 second demodulation reference signal sub-resource there is a one-to-one correspondence between the N1 second demodulation reference signal sub-resource and the N1 second sub-resource, and the second demodulation reference signal sub-resource with the corresponding relationship exists.
  • N2 third demodulation reference signal sub-resource there is a one-to-one correspondence between the N2 third demodulation reference signal sub-resource and the third sub-resource in the second sub-resource.
  • the first transmission module may be further configured to transmit the solution by using the same first type of beam on the second demodulation reference signal sub-resource and the second sub-resource with the corresponding relationship respectively. Adjust the reference signal and the information.
  • the second transmission module may be further configured to transmit the solution by using the same second type of beam on the third demodulation reference signal sub-resource and the third sub-resource that respectively have the corresponding relationship. Adjust the reference signal and the information.
  • the first resource granularity may be one or more system minimum scheduled time-frequency units.
  • the first resource granularity may not include resource units other than for transmitting information.
  • the first type of beam may be characterized by a first type of beam index
  • the second type of beam may be characterized by a second type of beam index
  • the first type of beam may be an analog beam and the second type of beam may be digital precoding.
  • a computer readable medium is also provided.
  • the computer readable medium is arranged to store program code for performing the following steps:
  • the three resource granularities are respectively used by the independent second type of beam transmission information on the K2 third resource granularities; wherein K1 and K2 are positive integers, and at least one of K1 and K2 is greater than 1.
  • the two types can be simultaneously Different beams are used to transmit information, which improves the robustness of information transmission and increases the reliability of information transmission while ensuring the coverage of information transmission.
  • 1 is a schematic diagram of a hybrid beamforming structure
  • FIG. 2 is a flowchart of an information transmission method in a hybrid beamforming system according to an embodiment of the present application
  • FIG. 3A is a first schematic diagram of correspondence between different analog beams and digital precoding and data signal transmission resources in a large-delay CDD transmission scheme according to an exemplary embodiment of the present application;
  • FIG. 3B is a second schematic diagram of correspondence between different analog beams and digital precoding and data signal transmission resources in a large delay CDD transmission scheme according to an exemplary embodiment of the present application;
  • FIG. 4 is a third schematic diagram of correspondence between different analog beams and digital precoding and data signal transmission resources in a large-delay CDD transmission scheme according to an exemplary embodiment of the present application;
  • FIG. 5 is a schematic diagram of correspondence between demodulation reference signal resources and data signal transmission resources in a large-delay CDD transmission scheme according to an exemplary embodiment of the present application;
  • FIG. 6 is a schematic diagram of correspondence between different analog beams and digital precoding domain data signal transmission resources in a transmission diversity SFBC transmission scheme according to an exemplary embodiment of the present application;
  • FIG. 7 is a schematic diagram of correspondence between demodulation reference signal resources and data signal transmission resources in a transmission diversity SFBC transmission scheme according to an exemplary embodiment of the present application;
  • FIG. 8 is a block diagram showing the structure of an information transmission apparatus in a hybrid beamforming system according to an embodiment of the present application.
  • FIG. 2 is a flowchart of a method for transmitting information in a hybrid beamforming system according to an embodiment of the present application. As shown in FIG. 2, the information transmission method provided in this embodiment includes the following steps:
  • Step S202 the first resource granularity is divided into K1 second resource granularities, and the independent first type of beam transmission information is respectively used on the K1 second resource granularities;
  • Step S204 the second resource granularity is divided into K2 third resource granularities, and the independent second type of beam transmission information is used respectively on the K2 third resource granularities;
  • the resource for transmitting the information includes one or more of the first resource granularities, K1 and K2 are positive integers, and at least one of K1 and K2 is greater than 1.
  • the independent first type beam transmission information is respectively used on the K1 second resource granularities, and the independent second type beam transmission information is respectively used on the K2 third resource granularities, so that two types of different types can be simultaneously simultaneously.
  • the beam is used to transmit information, which improves the robustness of information transmission and increases the reliability of information transmission while ensuring the coverage of information transmission.
  • the execution body of the above steps may be a base station, a terminal, or the like, but is not limited thereto.
  • step S202 and step S204 are interchangeable, that is, step S204 may be performed first, and then step S202 is performed.
  • the first type of beam may be characterized by a first type of beam index
  • the second type of beam may be characterized by a second type of beam index
  • the first type of beam may be an analog beam and the second type of beam may be digital precoding.
  • the scheme is mainly described based on the situation.
  • the first resource granularity includes one or a group of OFDM symbols in a time domain, and one or a group of subcarriers in a frequency domain; and the second resource granularity includes the first resource granularity. At least one OFDM symbol; the third resource granularity comprising at least one of the second resource granularities.
  • the dividing the first resource granularity into N1*N2 copies of the first sub-resource may include: dividing the K1 (that is, all) second resource granularity into N1 servings of the second sub-resource. And using N1 different first type beam transmission information on the N1 second sub-resources, and dividing K2 third resource granularities in each of the second sub-resources into N2 third sub-resources, N2 different second type beam transmission information is respectively used on the N2 third sub-resources; wherein N1 is a positive integer less than or equal to K1, and N2 is a positive integer less than or equal to K2.
  • N1 first type beams are used to transmit information, and the xth first class is used in the first specified second order of the second resource granularity in the K1 second resource granularities.
  • N2 second type beams are used for transmitting information, and a yth second type beam is used on a jth third resource granularity in a second specified order in any one of the second resource granularities.
  • the first specified order may be a time domain from front to back.
  • the second specified order may be one of: a frequency domain from low to high; a frequency domain from high to low; a first frequency domain followed by a time domain, and a frequency domain from low to high or low to High, time domain from front to back.
  • the information may include information transmitted over a control channel or a data channel.
  • the method of this embodiment may further include: configuring a demodulation reference signal resource for the information, and dividing the demodulation reference signal resource into N1*N2 first demodulation reference signal sub-resources,
  • the N1*N2 first demodulation reference signal sub-resources have a one-to-one correspondence with the N1*N2 first sub-resources, respectively.
  • the demodulation reference signal resource is used to demodulate the information.
  • the location of the demodulation reference signal resource in the time domain may be located before the information or at the beginning of the information.
  • the demodulation reference signal resource and the information occupy different subcarriers in the frequency domain, respectively.
  • the demodulation reference signal resource may include M demodulation reference signal ports, where M is a positive integer.
  • the method of this embodiment may further include: dividing the demodulation reference signal resource into N1 second demodulation reference signal sub-resources, and using the N1 second demodulation reference signal sub-resources Separating the demodulation reference signals by using different first type beams, respectively, and dividing each of the second demodulation reference signal sub-resources into N2 third demodulation reference signal sub-resources, in the N2 parts
  • the demodulation reference signal is transmitted by using a different second type of beam on the third demodulation reference signal sub-resource.
  • the demodulation reference signal and the second type beam are transmitted on the first demodulation reference signal sub-resource and the first sub-resource with the corresponding relationship, respectively.
  • Information
  • N1 second demodulation reference signal sub-resource there is a one-to-one correspondence between the N1 second demodulation reference signal sub-resource and the N1 second sub-resource, and the second demodulation reference signal sub-resource with the corresponding relationship exists.
  • N2 third demodulation reference signal sub-resource there is a one-to-one correspondence between the N2 third demodulation reference signal sub-resource and the third sub-resource in the second sub-resource.
  • the demodulation reference signal and the information are transmitted using the same first type of beam on the second demodulation reference signal sub-resource and the second sub-resource with the corresponding relationship, respectively.
  • the demodulation reference signal and the information are transmitted using the same second type of beam on the third demodulation reference signal sub-resource and the third sub-resource with the corresponding relationship, respectively.
  • the first resource granularity is one or more system minimum scheduled time-frequency units.
  • the first resource granularity does not include resource elements other than for transmitting information.
  • This embodiment proposes an information transmission method in a hybrid beamforming system, and at the same time
  • the first type of beam and the second type of beam are used for transmitting information, which increases the reliability of information transmission and ensures the robustness of information transmission while ensuring coverage of information transmission.
  • the method proposed in the following exemplary embodiments is applicable to a wireless communication system, such as a high frequency communication system, and is particularly suitable for a communication system employing a hybrid beamforming structure, but does not exclude other double layer or two stage precoding/beams.
  • a communication system with a shaped structure is particularly suitable for a wireless communication system, such as a high frequency communication system, and is particularly suitable for a communication system employing a hybrid beamforming structure, but does not exclude other double layer or two stage precoding/beams.
  • a communication system with a shaped structure is particularly suitable for a communication system employing a hybrid beamforming structure, but does not exclude other double layer or two stage precoding/beams.
  • An information transmission method in a hybrid beamforming system including: dividing a first resource granularity into K1 second resource granularities, and using independent ones on the K1 second resource granularities respectively.
  • the first type of beam transmission information is divided into K2 third resource granularities, and the independent second type of beam transmission information is used respectively on the K2 third resource granularities.
  • at least one of K1 and K2 is a positive integer greater than one.
  • the first resource granularity includes one or a group of OFDM symbols in the time domain, and one or a group of subcarriers in the frequency domain; the second resource granularity includes at least one OFDM symbol in the first resource granularity; The third resource granularity includes at least one subcarrier in the second resource granularity.
  • the first type of beam may be an analog beam in a hybrid beamforming system
  • the second type of beam may be a digital precoding beam in a hybrid beamforming system.
  • this case will be mainly described as an example.
  • Different first-class beams are characterized by different first-class beam indexes or identities (IDs), and different second-type beams pass different second-class beam indexes or identities. , referred to as ID) for characterization.
  • the "digital precoding” and “precoding”, “precoding weight” and “precoding codeword” mentioned in this application are equivalent, and the “simulation” mentioned in this application Beams and beams, analog beamforming weights, and beamforming weights are equivalent.
  • the different analog beams are characterized by different beam identifiers (IDs) or beam indexes, and different pre-coded code words can also be characterized by different pre-coded codeword indexes.
  • the dividing the first resource granularity into the N1*N2 first sub-resources may include: dividing the K1 second resource granularity into N1 second sub-resources, where the N1 second sub-resources Up to using N1 different analog beam transmission information, wherein each of the second sub-resources includes one or more second resource granularities; and each of the second sub-resources has K2 third resource granularities Dividing into N2 third sub-resources, respectively, using N2 different digital pre-coding transmission information on the N2 third sub-resources, wherein each third sub-resource includes one or more third resource granularities .
  • the first resource granularity is a system minimum scheduling time-frequency unit, such as one physical resource block or one physical resource block pair, and the first resource granularity may also be composed of multiple system minimum scheduling time-frequency units.
  • the transmission of information may include at least one of the following ways:
  • the first specified order is from the front to the back of the time domain.
  • N2 digital precoding is used to transmit information
  • the second specified order is one of: a frequency domain from low to high; a frequency domain from high to low; a first frequency domain followed by a time domain, wherein the frequency domain is from low to high or high to low, The time domain is from front to back.
  • the N1 group digital precoding is used to transmit information, where each group includes N2 digital precodings, and in the K1 second resource granularity, the i th second resource granularity is pressed in the first specified order.
  • Z2 is a positive integer less than or equal to N2.
  • the first specified order is a time domain from front to back
  • the second specified order is at least one of: a frequency domain from low to high; a frequency domain from high to low; a first frequency domain followed by a time domain, Among them, the frequency domain is from low to high or high to low, and the time domain is from front to back.
  • DMRS demodulation reference signal
  • the demodulation reference signal resource is located before the resource occupied by the information transmission, or at a starting position of the resource occupied by the information transmission, that is, one or more located at the beginning of the resource occupied by the information transmission.
  • the demodulation reference signal resource is located at a start position of the resource occupied by the information transmission, the demodulation reference signal is frequency-division multiplexed with the information at a start position of the resource occupied by the information transmission.
  • the demodulation reference signal is time division multiplexed with the information when the demodulation reference signal resource is located before the resource occupied by the information transmission.
  • the demodulation reference signal resource includes M demodulation reference signal ports, where M is a positive integer.
  • the demodulation reference signal resource is divided into N1 copies of the second demodulation reference signal sub-resource, and the demodulation is transmitted by using different analog beams respectively on the N1 second demodulation reference signal sub-resources a reference signal; each of the second demodulation reference signal sub-resources is divided into N2 third demodulation reference signal sub-resources, and different numbers are respectively used on the N2 third demodulation reference signal sub-resources
  • the demodulation reference signal is transmitted by precoding.
  • the N1 partial second demodulation reference signal sub-resource has a one-to-one correspondence with the N1 second sub-resources for transmitting information.
  • demodulation reference signals and information are transmitted using the same analog beam on the second demodulation reference signal sub-resource and the second sub-resource with the corresponding correspondence, respectively.
  • demodulation reference signals and information are transmitted using the same precoding on the third demodulation reference signal sub-resource and the third sub-resource with the corresponding relationship, respectively.
  • the information includes data in the data channel or signaling in the control channel. It is worth noting that some other information processing may be performed before the information is transmitted using analog beams and digital precoding.
  • information is first combined into a single stream information through a unitary matrix, and then a single loop information is mapped to a virtual antenna to complete a cyclic delay of the single stream information through a phase loop matrix, and then The digital precoding and analog beam weighted transmission process described in this application.
  • Another example is open loop transmission diversity SFBC (Space Frequency Block Code, empty The frequency block code), the information is first processed by an SFBC, and then passed through the weighted transmission process of the analog beam described in this application.
  • SFBC Space Frequency Block Code, empty The frequency block code
  • the method described in the present application is exemplarily used in an open-loop transmission scheme of information (for example, open loop MIMO, open loop transmission diversity SFBC, open loop transmission diversity FSTD (Frequency Switched Transmit Diversity), etc.), but Not limited to this, it can also be used in other closed-loop transmission schemes.
  • open-loop transmission scheme of information for example, open loop MIMO, open loop transmission diversity SFBC, open loop transmission diversity FSTD (Frequency Switched Transmit Diversity), etc.
  • the N1*N2 partial first demodulation reference signal sub-resource needs to be further divided into multiple smaller sub-resources according to different information, at least one of the beam and pre-coding pre-transmission processing scheme.
  • the information transmission layer number/flow number v under the open-loop MIMO or closed-loop MIMO transmission scheme is greater than 1
  • each of the N1*N2 first demodulation reference signal sub-resources is further divided into v smaller sub-resources, and v sub-resources in each of the first demodulation reference signal sub-resources use the same beam and pre-coding for demodulating v layer/stream information, respectively
  • the information transmission layer number/flow v is equal to 1, but the information is processed by SFBC
  • each of the N1*N2 first demodulation reference signal sub-resources is further divided into two parts for respectively solving Adjusting two streams of information after SFBC processing; when the number of information transmission layers/flow v is equal to 1, but the information is processed by FSTD
  • resources include at least one of a time domain resource, a frequency domain resource, a code domain resource, a power domain resource, and the like.
  • the first resource granularity does not include resource units other than for transmitting information, in other words, only information used or available for transmitting information is included in the first resource granularity.
  • Resource unit where there are many resource units other than for transmitting information, such as a resource unit for transmitting a demodulation reference signal, a resource unit for transmitting a measurement reference signal (for measuring channel quality), for A resource unit (for synchronization) that transmits a synchronization signal, and the like.
  • the total number of transmitting antennas at the transmitting end is N t
  • the number of transmitting radio links is N RF
  • the number of antennas linked to each transmitting radio link (also referred to as an RF link) is The information is first weighted by the digital precoding matrix, and then weighted by the analog beamforming weights and then transmitted to the receiving end through N t antennas.
  • the present exemplary embodiment describes a method of how information is transmitted based on digital precoding and analog beamforming to achieve both robustness and coverage performance.
  • the information here may be a data signal transmitted in a data channel or a signal signal transmitted in a control channel. For convenience of description, the following describes a data signal as an example. The method of the present embodiment will be described below by way of an exemplary embodiment.
  • FIG. 3A is a first schematic diagram of correspondence between different analog beams and digital precoding and data signal transmission resources in a large delay CDD transmission scheme according to an exemplary embodiment of the present application
  • FIG. 3B is a large time according to an exemplary embodiment of the present application.
  • FIG. 4 is a schematic diagram showing the correspondence between different analog beams and digital precoding and data signal transmission resources under the extended CDD transmission scheme
  • FIG. 4 is a different analog beam and digital precoding in a large delay CDD transmission scheme according to an exemplary embodiment of the present application. Schematic diagram of the correspondence with the data signal transmission resources.
  • the present exemplary embodiment employs a CDD (Cyclic Delay Diversity) technique, and the same or different precoding sets are employed on different beams.
  • CDD Cyclic Delay Diversity
  • the open-loop MIMO transmission scheme includes a scheme called Cyclic Delay Diversity (CDD), which artificially increases the frequency selectivity of the signal by transmitting different delay versions of the same signal on different antennas.
  • CDD Cyclic Delay Diversity
  • the current CDD technology is mainly based on digital precoding.
  • the goal of digital precoding is to ensure that the transmitted energy is concentrated in the direction of the non-zero eigenvalue of the channel matrix H, avoiding wasting energy in the "pathological" space of the channel. Therefore, under the hybrid beamforming structure, it is necessary to consider not only the cyclic use of the digital precoding in a plurality of values, but also the cyclic use of the analog beam in a plurality of values.
  • the first resource granularity includes one or a group of OFDM symbols in the time domain, and one or a group of subcarriers in the frequency domain.
  • the first resource granularity is one physical resource block (PRB). , Physical Resource Block)
  • PRB Physical Resource Block
  • the switching time unit of the analog beam is one or a group of OFDM symbols, and the digital precoding switching unit is one subcarrier or a group of subcarriers.
  • the switching time unit of the analog beam is one OFDM symbol
  • the digital precoding switching unit is one subcarrier.
  • the switching time unit of the analog beam is one OFDM symbol
  • the digital precoding switching unit is v subcarriers, that is, the frequency domain uses one and the same precoding weight for each group of v consecutive subcarriers, where , v is the number of data signal transmission layers or the number of streams.
  • the beam switching time unit is one OFDM symbol, and the three analog beams will be cyclically switched on 14 OFDM symbols; assuming 4 digital precoding, and the digital precoding switching unit is a subcarrier, The 4 analog beams will be cyclically switched on 12 subcarriers.
  • the transmission signal after the data signal passes the large delay CDD may be expressed as a form, wherein when the first resource granularity is a PRB pair and is assumed as above , i ranges from 0 to 13, and l ranges from 0 to 11:
  • U is a fixed matrix, which is a v ⁇ v dimension.
  • the main function is to mix v multiplexed data streams into a single data stream.
  • the value of the matrix is the same as LTE;
  • D(l) is a phase cyclic matrix on the 1st subcarrier, which is a v ⁇ v dimension, and mainly completes mapping the mixed single data stream onto the virtual antenna to complete a cyclic delay of the single data stream.
  • the The value of the matrix is the same as LTE;
  • L1 is the number of symbols in one OFDM symbol group, that is, each L1 OFDM symbol is a group using one and the same beam shaping weight, and L2 is a different beamforming included in the value range of the beamforming weight.
  • K1 is the number of symbols in an OFDM symbol group, that is, one same precoding weight is used for each group of K1 subcarriers in the frequency domain, and K2 is a different precoding included in the value range of the precoding weight.
  • the transmission signal after the data signal passes the large-delay CDD may be expressed as:
  • the corresponding precoding value range under beam 1 is ⁇ precoding weight 1 to 4 ⁇
  • the corresponding precoding value range under beam 2 is ⁇ precoding weight 5 to 8 ⁇
  • the corresponding precoding in beam 3 is taken.
  • the range of values is ⁇ precoding weights 9 to 12 ⁇ .
  • the v-layer initial data signal transmission fixed matrix Using a Fourier transform based matrix
  • the CDD phase shift operation is as follows:
  • FIG. 5 is a schematic diagram of correspondence between demodulation reference signal resources and data signal transmission resources in a large-delay CDD transmission scheme according to an exemplary embodiment of the present application.
  • the CDD technique is adopted in the present exemplary embodiment, and the correspondence between the DMRS and the data is a one-to-one correspondence.
  • the demodulation reference signal associated with the transmitted data signal occupies one PRB pair of the first 3 OFDM symbols, and the remaining OFDM symbols are used to transmit the data signal.
  • the transmission resource of the data signal is divided into 12 sub-resources, which are respectively weighted by using at least one of different analog beams and digital precoding.
  • three analog beams are used for data signal transmission, and one switching unit is one OFDM.
  • the digital precoding used for data signal transmission is four, and the switching unit is one subcarrier.
  • Digital precoding There are many ways of dividing, and the dividing rule may be the same as the dividing resource of the data signal transmission resource, or may be different.
  • the analog beam used for demodulating the reference signal is also three, and the switching unit is one OFDM.
  • the digital precoding used for the demodulation reference signal transmission is four, and the switching unit is one subcarrier.
  • the receiving end demodulates 12 sub-resources of the data signal transmission resource having the corresponding relationship based on the 12 sub-resources of the demodulation reference signal.
  • the demodulation reference signal resource is divided into N1*N2*v sub-resources, which can also be understood as per N1*N2 demodulation reference signal sub-resources.
  • Each of the demodulation reference signal sub-resources is further divided into v smaller sub-resources, wherein each of the v-reduced sub-resources in the demodulation reference signal sub-resource uses the same beam and pre-encoding, respectively A v-layer for demodulating a data signal of at least one of each of the different beams and precodings.
  • the correspondence between the transmission resource of the above data signal and the demodulation reference signal resource is pre-agreed or notified by signaling.
  • FIG. 6 is a schematic diagram of correspondence between different analog beams and digital precoding domain data signal transmission resources in a transmission diversity SFBC transmission scheme according to an exemplary embodiment of the present disclosure
  • FIG. 7 is a transmission diversity SFBC transmission scheme according to an exemplary embodiment of the present application.
  • the SFBC technique is employed in the present exemplary embodiment, and multiple beams are considered.
  • FIG. 6 which is a schematic diagram of data signal transmission resources used after SFBC processing
  • the transmission of data signals can be cyclically switched over multiple analog beam ranges.
  • the switching unit of each analog beam is one or a group of OFDM symbols.
  • the data signal in the data signal transmission resource region, the data signal is transmitted in different time units on different time units, and the switching unit of the data signal in the figure is one OFDM symbol, and three different analog beams are available for use.
  • the transmission of the data signal therefore, in the data signal transmission resource region, the SFBC data signals on different OFDM symbols are respectively transmitted in one cycle of three analog beams in a cyclic switching manner in the order of the time domain from the front to the back. .
  • the transmission signal after the data signal passes the SFBC is expressed as a form, wherein when the first resource granularity is a PRB pair and is assumed as above, i The value ranges from 0 to 13. The value of l ranges from 0 to 11.
  • the SFBC operation here is the same as in LTE, for example, after SFBC, the data signal becomes two parallel and approximately orthogonal data streams.
  • the information transmitted by the two data streams is the same, the two data streams being mapped onto two subcarriers, respectively, and exemplarily mapped onto every two adjacent subcarriers in the data signal transmission resource.
  • L1 is the number of symbols in one OFDM symbol group, that is, each L1 OFDM symbol is a group using one and the same beam shaping weight
  • the SFBC data signal is not weighted by the digital precoding weight, but can also be understood as digital precoding as an identity matrix, that is, the SFBC processed signal is first subjected to a unit matrix digital precoding and then subjected to weighting by the analog beam. transmission.
  • the demodulation reference signal resource will be divided into six resources, for example, the demodulation reference signal resource is first divided into three sub-resources (as shown in FIG. 7).
  • the sub-resources are respectively three different OFDM symbols.
  • the demodulation reference signals are respectively transmitted on the three sub-resources using the same three analog beams as the analog beams used for data signal transmission, and the sub-carriers of each OFDM symbol are respectively transmitted.
  • FIG. 8 is a block diagram showing the structure of an information transmission apparatus in a hybrid beamforming system according to an embodiment of the present application.
  • the device is used to implement the above embodiments and exemplary embodiments, and the description has been omitted.
  • the term "module” may implement software, hardware, or a combination of software and hardware for a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • the apparatus provided in this embodiment includes:
  • the first transmission module 82 is configured to divide the first resource granularity into K1 second resource granularities, and use independent analog beam transmission information on the K1 second resource granularities respectively;
  • the second transmission module 84 is configured to divide each of the second resource granularities into K2 third resource granularities, and use independent digital precoding transmission information on the K2 third resource granularities respectively;
  • the resource for transmitting the information includes one or more of the first resource granularities, K1 and K2 are positive integers, and at least one of K1 and K2 is greater than 1.
  • the first type of beam may be characterized by a first type of beam index
  • the second type of beam may be characterized by a second type of beam index
  • the first type of beam may be an analog beam and the second type of beam may be digital precoding.
  • the scheme is mainly described based on the situation.
  • the first resource granularity includes one or a group of OFDM symbols in a time domain, and one or a group of subcarriers in a frequency domain; and the second resource granularity includes at least the first resource granularity.
  • the first transmission module 82 may be further configured to: when the first resource granularity is divided into N1*N2 copies of the first sub-resource, the K1 (ie, all) The second resource granularity is divided into N1 second sub-resources, and N1 different analog beam transmission information is respectively used on the N1 second sub-resources; and the second transmission module 84 is further configured to The K2 third resource granularity is divided into N2 third sub-resources in the second sub-resource, and N2 different digital pre-coding transmission information is respectively used on the N2 third sub-resources; wherein N1 is less than or A positive integer equal to K1, and N2 is a positive integer less than or equal to K2.
  • the first transmission module 82 may be further configured to, in the case of using N1 analog beams for transmitting information, the i-th of the K1 second resource granularities in a first specified order.
  • the second transmission module 84 may be further configured to, in the case of transmitting N2 digital precodings for transmitting information, in any one of the second resource granularities in a second specified order
  • the first specified order is a time domain from front to back.
  • the second specified order is one of: a frequency domain from low to high; a frequency domain from high to low; a first frequency domain followed by a time domain, and the frequency domain is from low to high or low to High, time domain from front to back.
  • the information includes information transmitted over a control channel or a data channel.
  • the apparatus may further include: a configuration module configured to configure the demodulation reference signal resource for the information, and divide the demodulation reference signal resource into N1*N2 copies of the first demodulation reference a signal sub-resource, wherein the N1*N2 first demodulation reference signal sub-resources have a one-to-one correspondence with the N1*N2 first sub-resources, wherein the demodulation reference signal resource is used for solution Adjust the information.
  • a configuration module configured to configure the demodulation reference signal resource for the information, and divide the demodulation reference signal resource into N1*N2 copies of the first demodulation reference a signal sub-resource, wherein the N1*N2 first demodulation reference signal sub-resources have a one-to-one correspondence with the N1*N2 first sub-resources, wherein the demodulation reference signal resource is used for solution Adjust the information.
  • the position of the demodulation reference signal resource in the time domain is located before the information or at a start position of the information; wherein when the demodulation reference signal resource is located at the beginning of the information In position, the demodulation reference signal resource and the information occupy different subcarriers in the frequency domain, respectively.
  • the demodulation reference signal resource includes M demodulation reference signal ports, where M is a positive integer.
  • the first transmission module 82 may be further configured to use the demodulation parameter
  • the test signal resource is divided into N1 second demodulation reference signal sub-resources, and the demodulation reference signals are respectively transmitted on the N1 second demodulation reference signal sub-resources by using different analog beams;
  • the second transmission module The 84 may be further configured to divide each of the second demodulation reference signal sub-resources into N2 third demodulation reference signal sub-resources, and use different ones on the N2 third demodulation reference signal sub-resources respectively.
  • Digital precoding transmits the demodulation reference signal.
  • the demodulation reference signal and the information are transmitted using the same analog beam and digital precoding on the first demodulation reference signal sub-resource and the first sub-resource in which the corresponding relationship exists, respectively.
  • N1 second demodulation reference signal sub-resource there is a one-to-one correspondence between the N1 second demodulation reference signal sub-resource and the N1 second sub-resource, and the second demodulation reference signal sub-resource with the corresponding relationship exists.
  • N2 third demodulation reference signal sub-resource there is a one-to-one correspondence between the N2 third demodulation reference signal sub-resource and the third sub-resource in the second sub-resource.
  • the first transmission module 82 may be further configured to transmit the demodulation using the same analog beam on the second demodulation reference signal sub-resource and the second sub-resource that respectively have the corresponding relationship. Reference signal and said information.
  • the second transmission module 84 may be further configured to transmit the solution by using the same digital precoding on the third demodulation reference signal sub-resource and the third sub-resource with the corresponding relationship respectively. Adjust the reference signal and the information.
  • the first resource granularity is one or more system minimum scheduled time-frequency units.
  • the first resource granularity does not include resource elements other than for transmitting information.
  • the above modules may be implemented by software or hardware. For the latter, the foregoing may be implemented by, but not limited to, by the same processor; or by different processors.
  • the embodiment of the present application also provides a computer readable medium.
  • the computer readable medium described above may be arranged to store program code for performing the following steps:
  • Step S202 the first resource granularity is divided into K1 second resource granularities, and independent analog beam transmission information is respectively used on the K1 second resource granularities;
  • Step S204 dividing each of the second resource granularity into K2 third resource granularities, and using independent digital precoding transmission information on the K2 third resource granularities respectively;
  • K1 and K2 are positive integers, and at least one of K1 and K2 is greater than 1.
  • the computer readable medium may include, but is not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, a magnetic disk, or A variety of media such as optical discs that can store program code.
  • computer storage medium includes volatile and nonvolatile, implemented in any method or technology for storing information, such as computer readable instructions, data structures, program modules or other data. Sex, removable and non-removable media.
  • Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridge, magnetic tape, magnetic disk storage or other magnetic storage device, or may Any other medium used to store the desired information and that can be accessed by the computer.
  • communication media typically includes computer readable instructions, data structures, program modules, or other data in a modulated data signal, such as a carrier wave or other transport mechanism, and can include any information delivery media. .
  • the embodiment of the present invention provides an information transmission method and device in a hybrid beamforming system, which can simultaneously use two different types of beams for transmitting information, improve information transmission robustness, and increase information coverage while ensuring information transmission coverage.
  • the reliability of information transmission is a requirement for simultaneously use two different types of beams for transmitting information, improve information transmission robustness, and increase information coverage while ensuring information transmission coverage.

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Abstract

一种混合波束赋形系统中的信息传输方法，包括：将第一资源粒度划分为K1个第二资源粒度，在所述K1个第二资源粒度上分别使用独立的第一类波束传输信息；以及将每个所述第二资源粒度划分为K2个第三资源粒度，在所述K2个第三资源粒度上分别使用独立的第二类波束传输信息；其中，用于传输所述信息的资源包括一个或多个所述第一资源粒度，K1和K2为正整数，且K1和K2中至少一项大于1。

Description

混合波束赋形系统中的信息传输方法及装置 技术领域
本申请涉及但不限于通信领域，尤其涉及一种混合波束赋形系统中的信息传输方法及装置。
背景技术
为了满足自4G(第4代)通信系统的部署增加的对无线数据业务的需求，已经进行努力来开发改善5G(第5代)通信系统。5G通信系统也被称为“后4G网络”或“后LTE(Long Term Evolution，长期演进)系统”。
5G通信系统被认为是在更高频带(例如3GHz以上)中实施，以便完成更高的数据速率。高频通信的特点在于具有比较严重的路损、穿透损耗，在空间传播与大气关系密切。由于高频信号的波长极短，可以应用大量小型天线阵，以使得波束成形技术能够获得更为精确的波束方向，以窄波束技术优势提高高频信号的覆盖能力，弥补传输损耗，是高频通信的一大特点。
传统的LTE系统采用基带预编码进行多天线数据复用传输，它能够较好地支持多流数据传输，因此能够较好地支持空分复用以及MIMO(Multiple Input Multiple Output，多输入多输出)传输方案，但缺点是每个发送天线需要对应一个射频链路，成本太高。射频预编码又称为射频波束赋形或模拟波束赋形，相对应地，基带预编码又称为基带数字预编码或数字预编码。虽然射频预编码节省了射频链路数量，但是波束赋形权值只应用在单流发送信号上，然后再通过多个天线发送出去，从而限制了系统复用容量。在高频通信系统中，由于采用了大天线阵列，为了继续支持MIMO多流传输，并且有效控制射频链路成本，一种可行的方式是采用混合波束赋形结构，即同时采用数字预编码和模拟波束赋形进行多天线数据复用传输。图1是一种混合波束赋形结构的示意图，如图1所示，在混合波束赋形结构下，一个射频(Radio Frequency，RF)链路对应一个天线阵列。
LTE中的MIMO传输技术，只考虑了数字预编码，然而在5G或未来通信系统中，随着天线数的增加以及通信频段的升高，数字预编码码字表示的 波束越来越窄，从而覆盖的区域也比较小，用户移动位置可能就会造成性能的较大下降，也就是说鲁棒性不太好。
发明概述
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本申请实施例提供了一种混合波束赋形系统中的信息传输方法及装置，能够改善信息传输鲁棒性。
根据本申请的一个方面，提供了一种混合波束赋形系统中的信息传输方法，包括：将第一资源粒度划分为K1个第二资源粒度，在所述K1个第二资源粒度上分别使用独立的第一类波束传输信息；以及将每个所述第二资源粒度划分为K2个第三资源粒度，在所述K2个第三资源粒度上分别使用独立的第二类波束传输信息；其中，用于传输所述信息的资源包括一个或多个所述第一资源粒度，K1和K2为正整数，且K1和K2中至少一项大于1。
在示例性实施方式中，所述第一资源粒度在时域可以包含一个或一组OFDM(Orthogonal Frequency Division Multiplexing，正交频分复用)符号，在频域可以包含一个或一组子载波；所述第二资源粒度可以包含所述第一资源粒度中至少一个OFDM符号；所述第三资源粒度可以包含所述第二资源粒度中至少一个子载波。
在示例性实施方式中，在将所述第一资源粒度划分为N1*N2份第一子资源的情况下，上述方法可以包括：将全部所述第二资源粒度划分为N1份第二子资源，在所述N1份第二子资源上分别使用N1个不同的第一类波束传输信息；以及将每个所述第二子资源中K2个第三资源粒度划分为N2份第三子资源，在所述N2份第三子资源上分别使用N2个不同的第二类波束传输信息；其中，N1为小于或等于K1的正整数，N2为小于或等于K2的正整数。
在示例性实施方式中，上述方法还可以包括：在将N1个第一类波束用于传输信息的情况下，按第一指定顺序在所述K1个第二资源粒度中的第i个第二资源粒度上使用第x个第一类波束传输信息，其中，i为小于或等于K1的正整数，x＝imodN1+1，x为小于或等于N1的正整数，mod表示取模。
在示例性实施方式中，上述方法还可以包括：在将N2个第二类波束用于传输信息的情况下，按第二指定顺序在任意一个所述第二资源粒度中的第j个第三资源粒度上使用第y个第二类波束传输信息，其中，j为小于或等于K2的正整数，y＝jmodN2+1，y为小于或等于N2的正整数，mod表示取模。
在示例性实施方式中，上述方法还可以包括：在将N1组第二类波束用于传输信息，且每组中包含N2个第二类波束的情况下，按第一指定顺序在所述K1个第二资源粒度中的第i个第二资源粒度中再按第二指定顺序在第j个第三资源粒度上使用第z1组中第z2个第二类波束传输信息，其中，z1＝imodN1+1，z2＝jmodN2+1，z1为小于或等于N1的正整数，z2为小于或等于N2的正整数，mod表示取模。
在示例性实施方式中，所述第一指定顺序可以为时域从前到后。
在示例性实施方式中，所述第二指定顺序可以为以下之一：频域从低到高；频域从高到低；先频域后时域，且频域从低到高或从低到高，时域从前到后。
在示例性实施方式中，所述信息可以包括通过控制信道或数据信道传输的信息。
在示例性实施方式中，上述方法还可以包括：为所述信息配置解调参考信号资源，并将所述解调参考信号资源划分为N1*N2份第一解调参考信号子资源，所述N1*N2份第一解调参考信号子资源分别与所述N1*N2份第一子资源存在一一对应关系；其中，所述解调参考信号资源用于解调所述信息。
在示例性实施方式中，所述解调参考信号资源在时域上的位置位于所述信息之前或者位于所述信息的开始位置；其中，当所述解调参考信号资源位于所述信息的开始位置时，所述解调参考信号资源和所述信息在频域上分别占用不同的子载波。
在示例性实施方式中，所述解调参考信号资源包括M个解调参考信号端口，其中，M为正整数。
在示例性实施方式中，上述方法还可以包括：将所述解调参考信号资源划分为N1份第二解调参考信号子资源，在所述N1份第二解调参考信号子资 源上分别使用不同的第一类波束传输所述解调参考信号；将每份所述第二解调参考信号子资源分别划分为N2份第三解调参考信号子资源，在所述N2份第三解调参考信号子资源上分别使用不同的第二类波束传输所述解调参考信号。
在示例性实施方式中，上述方法还可以包括：分别在存在所述对应关系的第一解调参考信号子资源和第一子资源上使用相同的第一类波束及第二类波束传输所述解调参考信号和所述信息。
在示例性实施方式中，所述N1份第二解调参考信号子资源和所述N1份第二子资源之间存在一一对应关系，存在所述对应关系的第二解调参考信号子资源和第二子资源中的N2份第三解调参考信号子资源和第三子资源存在一一对应关系。
在示例性实施方式中，上述方法还可以包括：分别在存在所述对应关系的第二解调参考信号子资源和第二子资源上使用相同的第一类波束传输所述解调参考信号和所述信息。
在示例性实施方式中，上述方法还可以包括：分别在存在所述对应关系的第三解调参考信号子资源和第三子资源上使用相同的第二类波束传输所述解调参考信号和所述信息。
在示例性实施方式中，所述第一资源粒度可以为一个或多个系统最小调度时频单元。
在示例性实施方式中，所述第一资源粒度可以不包括除用于传输信息之外的资源单元。
在示例性实施方式中，所述第一类波束可以通过第一类波束索引进行表征，所述第二类波束可以通过第二类波束索引进行表征。
在示例性实施方式中，所述第一类波束可以为模拟波束，所述第二类波束可以为数字预编码。
根据本申请的另一方面，提供了一种混合波束赋形系统中的信息传输装置，包括：第一传输模块，配置为将第一资源粒度划分为K1个第二资源粒度，并在所述K1个第二资源粒度上分别使用独立的第一类波束传输信息； 以及第二传输模块，配置为将每个所述第二资源粒度划分为K2个第三资源粒度，并在所述K2个第三资源粒度上分别使用独立的第二类波束传输信息；其中，用于传输所述信息的资源包括一个或多个所述第一资源粒度，K1和K2为正整数，且K1和K2中至少一项大于1。
在示例性实施方式中，所述第一资源粒度在时域可以包含一个或一组OFDM符号，在频域可以包含一个或一组子载波；所述第二资源粒度可以包含所述第一资源粒度中至少一个OFDM符号；所述第三资源粒度可以包含所述第二资源粒度中至少一个子载波。
在示例性实施方式中，所述第一传输模块还可以配置为在将所述第一资源粒度划分为N1*N2份第一子资源的情况下，将全部所述第二资源粒度划分为N1份第二子资源，并在所述N1份第二子资源上分别使用N1个不同的第一类波束传输信息；以及所述第二传输模块还可以配置为将每个所述第二子资源中K2个第三资源粒度划分为N2份第三子资源，并在所述N2份第三子资源上分别使用N2个不同的第二类波束传输信息；其中，N1为小于或等于K1的正整数，N2为小于或等于K2的正整数。
在示例性实施方式中，所述第一传输模块还可以配置为在将N1个第一类波束用于传输信息的情况下，按第一指定顺序在所述K1个第二资源粒度中的第i个第二资源粒度上使用第x个第一类波束传输信息，其中，i为小于或等于K1的正整数，x＝imodN1+1，x为小于或等于N1的正整数，mod表示取模。
在示例性实施方式中，所述第二传输模块还可以配置为在将N2个第二类波束用于传输信息的情况下，按第二指定顺序在任意一个所述第二资源粒度中的第j个第三资源粒度上使用第y个第二类波束传输信息，其中，j为小于或等于K2的正整数，y＝jmodN2+1，y为小于或等于N2的正整数，mod表示取模。
在示例性实施方式中，所述第二传输模块还可以配置为在将N1组第二类波束用于传输信息，且每组中包含N2个第二类波束的情况下，按第一指定顺序在所述K1个第二资源粒度中的第i个第二资源粒度中再按第二指定顺序在第j个第三资源粒度上使用第z1组中第z2个第二类波束传输信息，其 中，z1＝imodN1+1，z2＝jmodN2+1，z1为小于或等于N1的正整数，z2为小于或等于N2的正整数，mod表示取模。
在示例性实施方式中，所述第一指定顺序可以为时域从前到后。
在示例性实施方式中，所述第二指定顺序可以为以下之一：频域从低到高；频域从高到低；先频域后时域，且频域从低到高或从低到高，时域从前到后。
在示例性实施方式中，所述信息可以包括通过控制信道或数据信道传输的信息。
在示例性实施方式中，上述装置还可以包括：配置模块，配置为给所述信息配置解调参考信号资源，并将所述解调参考信号资源划分为N1*N2份第一解调参考信号子资源，其中，所述N1*N2份第一解调参考信号子资源分别与所述N1*N2份第一子资源存在一一对应关系；其中，所述解调参考信号资源用于解调所述信息。
在示例性实施方式中，所述解调参考信号资源在时域上的位置可以位于所述信息之前或者位于所述信息的开始位置；其中，当所述解调参考信号资源位于所述信息的开始位置时，所述解调参考信号资源和所述信息在频域上分别占用不同的子载波。
在示例性实施方式中，所述解调参考信号资源可以包括M个解调参考信号端口，其中，M为正整数。
在示例性实施方式中，所述第一传输模块还可以配置为将所述解调参考信号资源划分为N1份第二解调参考信号子资源，在所述N1份第二解调参考信号子资源上分别使用不同的第一类波束传输所述解调参考信号；所述第二传输模块还可以配置为将每份所述第二解调参考信号子资源分别划分为N2份第三解调参考信号子资源，在所述N2份第三解调参考信号子资源上分别使用不同的第二类波束传输所述解调参考信号。
在示例性实施方式中，分别在存在所述对应关系的第一解调参考信号子资源和第一子资源上使用相同的第一类波束及第二类波束传输所述解调参考信号和所述信息。
在示例性实施方式中，所述N1份第二解调参考信号子资源和所述N1份第二子资源之间存在一一对应关系，存在所述对应关系的第二解调参考信号子资源和第二子资源中的N2份第三解调参考信号子资源和第三子资源存在一一对应关系。
在示例性实施方式中，所述第一传输模块还可以配置为分别在存在所述对应关系的第二解调参考信号子资源和第二子资源上使用相同的第一类波束传输所述解调参考信号和所述信息。
在示例性实施方式中，所述第二传输模块还可以配置为分别在存在所述对应关系的第三解调参考信号子资源和第三子资源上使用相同的第二类波束传输所述解调参考信号和所述信息。
在示例性实施方式中，所述第一资源粒度可以为一个或多个系统最小调度时频单元。
在示例性实施方式中，所述第一资源粒度可以不包括除用于传输信息之外的资源单元。
在示例性实施方式中，所述第一类波束可以通过第一类波束索引进行表征，所述第二类波束可以通过第二类波束索引进行表征。
在示例性实施方式中，所述第一类波束可以为模拟波束，所述第二类波束可以为数字预编码。
根据本申请的又一个方面，还提供了一种计算机可读介质。该计算机可读介质设置为存储用于执行以下步骤的程序代码：
将第一资源粒度划分为K1个第二资源粒度，在所述K1个第二资源粒度上分别使用独立的第一类波束传输信息；以及将每个所述第二资源粒度划分为K2个第三资源粒度，在所述K2个第三资源粒度上分别使用独立的第二类波束传输信息；其中，K1和K2为正整数，且K1和K2中至少一项大于1。
通过本申请，由于在K1个第二资源粒度上分别使用独立的第一类波束传输信息，并在K2个第三资源粒度上分别使用独立的第二类波束传输信息，从而能够同时将两类不同的波束用于传输信息，改善了信息传输鲁棒性，在保证信息传输覆盖范围的情况下增加了信息传输的可靠性。
在阅读并理解了附图和详细描述后，可以明白其他方面。
附图概述
图1是一种混合波束赋形结构的示意图；
图2是根据本申请实施例的混合波束赋形系统中的信息传输方法的流程图；
图3A是根据本申请示例性实施例中大时延CDD传输方案下，不同模拟波束和数字预编码与数据信号传输资源的对应关系示意图一；
图3B是根据本申请示例性实施例中大时延CDD传输方案下，不同模拟波束和数字预编码与数据信号传输资源的对应关系示意图二；
图4是根据本申请示例性实施例中大时延CDD传输方案下，不同模拟波束和数字预编码与数据信号传输资源的对应关系示意图三；
图5是根据本申请示例性实施例中大时延CDD传输方案下，解调参考信号资源和数据信号传输资源对应关系示意图；
图6是根据本申请示例性实施例中传输分集SFBC传输方案下，不同模拟波束和数字预编码域数据信号传输资源对应关系示意图；
图7是根据本申请示例性实施例中传输分集SFBC传输方案下，解调参考信号资源和数据信号传输资源对应关系示意图；
图8是根据本申请实施例的混合波束赋形系统中的信息传输装置的结构框图。
详述
下文中将参考附图并结合实施例来详细说明本申请。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
需要说明的是，本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
图2是根据本申请实施例提供的一种混合波束赋形系统中的信息传输方法的流程图。如图2所示，本实施例提供的信息传输方法包括如下步骤：
步骤S202，将第一资源粒度划分为K1个第二资源粒度，在所述K1个第二资源粒度上分别使用独立的第一类波束传输信息；以及
步骤S204，将每个所述第二资源粒度划分为K2个第三资源粒度，在所述K2个第三资源粒度上分别使用独立的第二类波束传输信息；
其中，用于传输所述信息的资源包括一个或多个所述第一资源粒度，K1和K2为正整数，且K1和K2中至少一项大于1。
通过上述步骤，在K1个第二资源粒度上分别使用独立的第一类波束传输信息，并在K2个第三资源粒度上分别使用独立的第二类波束传输信息，从而能够同时将两类不同的波束用于传输信息，改善了信息传输鲁棒性，在保证信息传输覆盖范围的情况下增加了信息传输的可靠性。
在示例性实施方式中，上述步骤的执行主体可以为基站、终端等，但不限于此。
在示例性实施方式中，步骤S202和步骤S204的执行顺序是可以互换的，即可以先执行步骤S204，然后再执行步骤S202。
在示例性实施方式中，所述第一类波束可通过第一类波束索引进行表征，所述第二类波束可通过第二类波束索引进行表征。
在示例性实施方式中，所述第一类波束可以是模拟波束，所述第二类波束可以是数字预编码。在本实施例中主要基于该情况对方案进行描述。
作为一种示例性实施方式，所述第一资源粒度在时域包含一个或一组OFDM符号，在频域包含一个或一组子载波；所述第二资源粒度包含所述第一资源粒度中至少一个OFDM符号；所述第三资源粒度包含所述第二资源粒度中至少一个子载波。
作为一种示例性实施方式，将所述第一资源粒度划分为N1*N2份第一子资源，可以包括：将所述K1个(即将全部)第二资源粒度划分为N1份第二子资源，在所述N1份第二子资源上分别使用N1个不同的第一类波束传输信息；将所述每个第二子资源中K2个第三资源粒度划分为N2份第三子资源， 在所述N2份第三子资源上分别使用N2个不同的第二类波束传输信息；其中，N1为小于或等于K1的正整数，N2为小于或等于K2的正整数。
作为一种示例性实施方式，将N1个第一类波束用于传输信息，在所述K1个第二资源粒度中按第一指定顺序第i个第二资源粒度上使用第x个第一类波束传输信息，其中，x＝imodN1+1，i为小于或等于K1的正整数，x为小于或等于N1的正整数，mod表示取模。
在示例性实施方式中，将N2个第二类波束用于传输信息，在任意一个所述第二资源粒度中按第二指定顺序第j个第三资源粒度上使用第y个第二类波束传输信息，其中，y＝jmodN2+1，j为小于或等于K2的正整数，y为小于或等于N2的正整数，mod表示取模。
在示例性实施方式中，将N1组第二类波束用于传输信息，其中每组中包含N2个第二类波束，在所述K1个第二资源粒度中按第一指定顺序第i个第二资源粒度中按第二指定顺序第j个第三资源粒度上使用第z1组中第z2个第二类波束传输信息，其中，z1＝imodN1+1，z2＝jmodN2+1，z1为小于或等于N1的正整数，z2为小于或等于N2的正整数，mod表示取模。
在示例性实施方式中，所述第一指定顺序可以为时域从前到后。
在示例性实施方式中，所述第二指定顺序可以为以下之一：频域从低到高；频域从高到低；先频域后时域，频域从低到高或从低到高，时域从前到后。
在示例性实施方式中，所述信息可以包括通过控制信道或数据信道所传输的信息。
在示例性实施方式中，本实施例的方法还可以包括：为所述信息配置解调参考信号资源，将所述解调参考信号资源划分为N1*N2份第一解调参考信号子资源，其中，所述N1*N2份第一解调参考信号子资源分别与所述N1*N2份第一子资源存在一一对应关系。其中，所述解调参考信号资源用于解调所述信息。
在示例性实施方式中，所述解调参考信号资源在时域上的位置可以位于所述信息之前或者位于所述信息的开始位置。其中，当所述解调参考信号资 源位于所述信息的开始位置时，所述解调参考信号资源和所述信息在频域上分别占用不同的子载波。
在示例性实施方式中，所述解调参考信号资源可以包括M个解调参考信号端口，其中，M为正整数。
在示例性实施方式中，本实施例的方法还可以包括：将所述解调参考信号资源划分为N1份第二解调参考信号子资源，在所述N1份第二解调参考信号子资源上分别使用不同的第一类波束传输所述解调参考信号；将所述每一份第二解调参考信号子资源均划分为N2份第三解调参考信号子资源，在所述N2份第三解调参考信号子资源上分别使用不同的第二类波束传输所述解调参考信号。
在示例性实施方式中，分别在所述存在对应关系的第一解调参考信号子资源和第一子资源上使用相同的第一类波束及第二类波束传输所述解调参考信号和所述信息。
在示例性实施方式中，所述N1份第二解调参考信号子资源和所述N1份第二子资源之间存在一一对应关系，所述存在对应关系的第二解调参考信号子资源和第二子资源中的N2份第三解调参考信号子资源和第三子资源存在一一对应关系。
在示例性实施方式中，分别在所述存在对应关系的第二解调参考信号子资源和第二子资源上使用相同的第一类波束传输所述解调参考信号和所述信息。
在示例性实施方式中，分别在所述存在对应关系的第三解调参考信号子资源和第三子资源上使用相同的第二类波束传输所述解调参考信号和所述信息。
在示例性实施方式中，所述第一资源粒度为一个或多个系统最小调度时频单元。
在示例性实施方式中，所述第一资源粒度不包括除用于传输信息之外的资源单元。
本实施例通过提出了一个混合波束赋形系统中的信息传输方法，同时将 第一类波束和第二类波束用于传输信息，在保证信息传输覆盖范围的情况下增加了信息传输的可靠性，改善了信息传输鲁棒性。
下面结合示例性实施例进行说明，以下示例性实施例结合了上述实施例及其示例性实施方式。
在以下示例性实施例中所提方法适用于无线通信系统，例如高频通信系统，尤其适用于采用混合波束赋形结构的通信系统，但也不排除其它采用双层或两级预编码/波束赋形结构的通信系统。
以下示例性实施例中提出一种混合波束赋形系统中的信息传输方法，包括：将第一资源粒度划分为K1个第二资源粒度，在所述K1个第二资源粒度上分别使用独立的第一类波束传输信息；将所述每个第二资源粒度划分为K2个第三资源粒度，在所述K2个第三资源粒度上分别使用独立的第二类波束传输信息。其中，K1和K2中至少一项为大于1的正整数。
其中，所述第一资源粒度在时域包含一个或一组OFDM符号，在频域包含一个或一组子载波；所述第二资源粒度包含所述第一资源粒度中至少一个OFDM符号；所述第三资源粒度包含所述第二资源粒度中至少一个子载波。
其中，第一类波束可以是混合波束赋形系统中的模拟波束，第二类波束可以是混合波束赋形系统中的数字预编码波束。下文中主要以这种情况为例进行说明。
不同的第一类波束通过不同的第一类波束索引(index)或标识(identity，简称为ID)来表征，不同的第二类波束通过不同的第二类波束索引(index)或标识(identity，简称为ID)来表征。
值得说明的是，本申请中所提到的“数字预编码”和“预编码”、“预编码权值”、“预编码码字”是等价的，本申请中所提到的“模拟波束”和“波束”、“模拟波束赋形权值”、“波束赋形权值”是等价的。示例性地，所述不同的模拟波束通过不同的波束标识(identity，简称为ID)或波束索引进行表征，不同的预编码码字也可以通过不同的预编码码字索引进行表征。
其中，将所述第一资源粒度划分为N1*N2份第一子资源，可以包括：将所述K1个第二资源粒度划分为N1份第二子资源，在所述N1份第二子资源 上分别使用N1个不同的模拟波束传输信息，其中，所述每一份第二子资源中包含一个或多个第二资源粒度；将所述每个第二子资源上K2个第三资源粒度划分为N2份第三子资源，在所述N2份第三子资源上分别使用N2个不同的数字预编码传输信息，其中，每一份第三子资源中包含一个或多个第三资源粒度。其中，N1为小于或等于K1的正整数，N2为小于或等于K2的正整数。示例性地，所述第一资源粒度为系统最小调度时频单元，例如一个物理资源块或一个物理资源块对，所述第一资源粒度也可以由多个系统最小调度时频单元组成。
示例性地，信息的传输可以包括以下几种方式至少之一：
方式一：将N1个模拟波束用于传输信息，在所述K1个第二资源粒度中按第一指定顺序第i个第二资源粒度上使用第x个模拟波束传输信息，其中，x＝imodN1+1，i为小于或等于K1的正整数，x为小于或等于N1的正整数。示例性地，所述第一指定顺序为时域从前到后。
方式二：将N2个数字预编码用于传输信息，在任意一个所述第二资源粒度中按第二指定顺序第j个第三资源粒度上使用第y个数字预编码传输信息，其中，y＝jmodN2+1，j为小于或等于K2的正整数，y为小于或等于N2的正整数。示例性地，所述第二指定顺序为以下之一：频域从低到高；频域从高到低；先频域后时域，其中，频域从低到高或从高到低，时域从前到后。
方式三：将N1组数字预编码用于传输信息，其中，每组中包含N2个数字预编码，在所述K1个第二资源粒度中按第一指定顺序第i个第二资源粒度中按第二指定顺序第j个第三资源粒度上使用第z1组中第z2个数字预编码传输信息，其中，z1＝imodN1+1，z2＝jmodN2+1，z1为小于或等于N1的正整数，z2为小于或等于N2的正整数。示例性地，所述第一指定顺序为时域从前到后，所述第二指定顺序为以下至少之一：频域从低到高；频域从高到低；先频域后时域，其中，频域从低到高或从高到低，时域从前到后。
为所述信息配置解调参考信号(Demodulation Reference Signal，简称为DMRS)资源，将所述解调参考信号资源划分为N1*N2份第一解调参考信号子资源，所述N1*N2份第一解调参考信号子资源分别与上述N1*N2份第一子资源存在一一对应关系。其中，所述解调参考信号资源用于解调所述信息， 并且在所述存在对应关系的第一解调参考信号子资源和第一子资源上使用相同的模拟波束及数字预编码传输解调参考信号和信息。
示例性地，所述解调参考信号资源位于所述信息传输所占用资源之前，或者位于所述信息传输所占用资源的开始位置，即位于所述信息传输所占用资源的开始的一个或多个OFDM符号上。其中，当所述解调参考信号资源位于所述信息传输所占用资源的开始位置时，所述解调参考信号在所述信息传输所占用资源的开始位置与所述信息频分复用。当所述解调参考信号资源位于所述信息传输所占用资源之前时，所述解调参考信号与所述信息时分复用。
示例性地，所述解调参考信号资源包括M个解调参考信号端口，其中，M为正整数。
示例性地，将所述解调参考信号资源划分为N1份第二解调参考信号子资源，在所述N1份第二解调参考信号子资源上分别使用不同的模拟波束传输所述解调参考信号；将所述每一份第二解调参考信号子资源均划分为N2份第三解调参考信号子资源，在所述N2份第三解调参考信号子资源上分别使用不同的数字预编码传输所述解调参考信号。
示例性地，所述N1份第二解调参考信号子资源和上述用于传输信息的N1份第二子资源存在一一对应关系。示例性地，分别在所述存在对应关系的第二解调参考信号子资源和第二子资源上使用相同的模拟波束传输解调参考信号和信息。
示例性地，所述存在对应关系的第二解调参考信号子资源中的N2份第三解调参考信号子资源和第二子资源中的N2份第三子资源之间存在一一对应关系。示例性地，分别在所述存在对应关系的第三解调参考信号子资源和第三子资源上使用相同的预编码传输解调参考信号和信息。
所述信息包括数据信道中的数据或者控制信道中信令。值得说明的是，在所述信息使用模拟波束及数字预编码传输之前，还可能经过一些其他的信息处理过程。例如开环MIMO传输中，信息先经过一个酉矩阵将多流信息合并为单流信息，然后再通过相位循环矩阵，将单流信息映射到虚拟天线上完成单流信息的循环时延，然后再经过本申请所述的数字预编码和模拟波束的加权传输过程。又如开环传输分集SFBC(Space Frequency Block Code，空 频块码)，信息先经过一个SFBC处理，然后再经过本申请所述模拟波束的加权传输过程。本申请所述的方法示例性地用于信息的开环传输方案(例如开环MIMO、开环传输分集SFBC、开环传输分集FSTD(Frequency Switched Transmit Diversity，频率切换发送分集)等)中，但不限于此，也可以用于其它闭环传输方案中。考虑到上述开环传输方案和闭环传输方案的处理可以利用已有技术，在这里不再赘述。
需要说明的是，所述N1*N2份第一解调参考信号子资源根据不同的信息经过波束和预编码中至少一项传输前处理方案需要进一步被划分为多份更小的子资源。例如，当开环MIMO或闭环MIMO传输方案下的信息传输层数/流数v大于1的时候，所述N1*N2份第一解调参考信号子资源中的每一份将进一步被划分为v份更小的子资源，且所述每一份第一解调参考信号子资源中的v份更小的子资源使用相同的波束和预编码，分别用于解调v层/流的信息；当信息传输层数/流程v等于1，但信息经过SFBC处理时，所述N1*N2份第一解调参考信号子资源中的每一份将进一步被划分为2份，分别用于解调SFBC处理后的两个信息流；当信息传输层数/流程v等于1，但信息经过FSTD处理时，所述N1*N2份第一解调参考信号子资源中的每一份将进一步被划分为4份，分别用于解调FSTD处理后的四个信息流。
值得说明的是，本示例性实施例中所提到的“资源”包括时域资源、频域资源、码域资源、功率域资源等中的至少一种。
值得说明的是，在示例性实施方式中，所述第一资源粒度不包括除用于传输信息之外的资源单元，换句话说，第一资源粒度中仅包括了用于或可用于传输信息的资源单元，这里除用于传输信息之外的资源单元包括很多种，例如用于传输解调参考信号的资源单元、用于传输测量参考信号的资源单元(用于测量信道质量)、用于传输同步信号的资源单元(用于同步)等。
参考图1所示，发送端总的发送天线数为Nt，发送射频链路数为NRF，每个发射射频链路(又称为RF链路)链接的天线数为
Figure PCTCN2017095304-appb-000001
，信息首先经过数字预编码矩阵的加权，然后经过模拟波束赋形权值的加权之后通过Nt个天线发送给接收端。本示例性实施例从另一方面来看即描述了信息如何基于数字预编码和模拟波束赋形发送出去的方法，以同时获得鲁棒性和覆盖性能。这 里的信息可以是数据信道中传输的数据信号或者控制信道中传输的信令信号，为了描述方便，下面统一以数据信号为例进行说明。下面以示例性实施例说明本实施例的方法。
图3A是根据本申请示例性实施例中大时延CDD传输方案下，不同模拟波束和数字预编码与数据信号传输资源的对应关系示意图一；图3B是根据本申请示例性实施例中大时延CDD传输方案下，不同模拟波束和数字预编码与数据信号传输资源的对应关系示意图二；图4是根据本申请示例性实施例中大时延CDD传输方案下，不同模拟波束和数字预编码与数据信号传输资源的对应关系示意图三。
本示例性实施例采用CDD(循环时延分集，Cyclic Delay Diversity)技术，且不同波束上采用相同或不同的预编码集合。
开环MIMO传输方案中包括一种方案叫做循环时延分集(Cyclic Delay Diversity，简称为CDD)，就是通过在不同天线上传输同一个信号的不同延时版本，人为地增加信号的频率选择性。
目前的CDD技术主要基于数字预编码，基于数字预编码的目标是保证发射能量集中在信道矩阵H的非零特征值方向上，避免在信道的“病态”空间中浪费能量。因此，混合波束赋形结构下，不仅需要考虑数字预编码在多个取值范围内的循环使用，还需要包括模拟波束在多个取值范围内的循环使用。
如图3A或图3B所示，第一资源粒度在时域包括一个或一组OFDM符号，在频域包括一个或一组子载波，示例性地，第一资源粒度为一个物理资源块(PRB，Physical Resource Block)对，为方便描述，这里假设一个PRB对在时域包括14个OFDM符号，在频域包括12个子载波。
其中，模拟波束的切换时间单元为一个或一组OFDM符号，而数字预编码的切换单元为一个子载波或一组子载波。例如图3A中所示，模拟波束的切换时间单元为一个OFDM符号，数字预编码的切换单元为一个子载波。而在图3B中，模拟波束的切换时间单元为一个OFDM符号，数字预编码的切换单元为v个子载波，即频域每v个连续子载波为一组使用一个相同的预编码权值，其中，v为数据信号传输层数或流数。
假设有3个模拟波束，波束切换时间单元为一个OFDM符号，3个模拟波束将在14个OFDM符号上循环切换；假设有4个数字预编码，且数字预编码的切换单元为一个子载波，4个模拟波束将在12个子载波上循环切换。
其中，对于第i符号和第l子载波上，数据信号经过大时延CDD(Large Delay CDD)之后的发送信号可以表示为如下形式，其中，当第一资源粒度为一个PRB对并且如上假设时，i的取值范围为0至13，l的取值范围为0至11：
Figure PCTCN2017095304-appb-000002
其中：
Figure PCTCN2017095304-appb-000003
为初始发送信号，为v×1维，其中，初始发送信号的层数为v层/流，sr(r＝0,1,...,v-1)为第r层/流初始发送信号；
U为一固定矩阵，为v×v维，主要作用是把v个复用的数据流混合成单数据流，示例性地，该矩阵的取值同LTE；
D(l)为第l子载波上的相位循环矩阵，为v×v维，主要完成将混合后的单数据流映射到虚拟天线上，完成单数据流的循环时延，示例性地，该矩阵的取值同LTE；
W(i)表示第i符号上的(模拟)波束赋形权值，为Nt×NRF维，W(i)＝Dk，
Figure PCTCN2017095304-appb-000004
其中，L1为一个OFDM符号组内符号个数，即每L1个OFDM符号为一组使用一个相同的波束赋形权值，L2为波束赋形权值的取值范围下包括的不同波束赋形权值的个数，例如图3A或图3B中，L1＝1，L2＝3；mod表示取模，
Figure PCTCN2017095304-appb-000005
表示向下取整；
F(l)表示第l子载波上的(数字)预编码权值，为NRF×v维，F(l)＝Ck，
Figure PCTCN2017095304-appb-000006
其中，K1为一个OFDM符号组内符号个数，即在频域上每K1个子载波为一组使用一个相同的预编码权值，K2为预编码 权值的取值范围下包括的不同预编码权值的个数，例如图3A中，K1＝1，K2＝4，图3B中，K1＝v＝2，K2＝4。
作为本实施例的又一种实施方式，对于第i符号和第l子载波上，数据信号经过大时延CDD之后的发送信号可以表示为：
Figure PCTCN2017095304-appb-000007
其中：
Figure PCTCN2017095304-appb-000008
U、D(l)和W(i)的解释同上；
F(i,l)表示第i符号和第l子载波上的(数字)预编码权值，为NRF×v维，F(i,l)＝Ck，
Figure PCTCN2017095304-appb-000009
其中，L1、L2、K1的解释同上，K2这里指每个(模拟)波束下的频域(数字)预编码权值的取值个数，例如，对于如图4所示，K2＝4，波束1下对应的预编码取值范围为{预编码权值1至4}，波束2下对应的预编码取值范围为{预编码权值5至8}，波束3下对应的预编码取值范围为{预编码权值9至12}。
示例性地，v层初始数据信号传输下，固定矩阵
Figure PCTCN2017095304-appb-000010
采用基于傅里叶(Fourier)变换的酉矩阵，
Figure PCTCN2017095304-appb-000011
CDD相移操作如下式所示：
Figure PCTCN2017095304-appb-000012
其中，示例性地，
Figure PCTCN2017095304-appb-000013
例如，假设v不超过4，U和D(l)的取值如下表格1所示：
表格1
Figure PCTCN2017095304-appb-000014
图5是根据本申请示例性实施例中大时延CDD传输方案下解调参考信号资源和数据信号传输资源对应关系示意图。
本示例性实施例中采用CDD技术，且DMRS和数据的对应关系为一一对应。
如图5所示，与所传输的数据信号相关的解调参考信号占用一个PRB对前3个OFDM符号，剩余OFDM符号用于传输数据信号。
数据信号的传输资源被划分为12份子资源，分别采用不同的模拟波束和数字预编码中至少一项的加权进行传输，例如，数据信号传输所采用的模拟波束为3个，切换单元为一个OFDM符号，数据信号传输所采用的数字预编码为4个，切换单元为一个子载波。
解调参考信号的资源也被划分为4x3＝12份子资源，分别与数据信号传输资源的所划分的12份存在一一对应关系，并且存在一一对应关系的资源之间使用相同的模拟波束和数字预编码。其中，划分方式有很多种，划分规则可以与数据信号传输资源的划分资源相同，也可以不同，例如相同的情况下，解调参考信号所采用的模拟波束也为3个，切换单元为一个OFDM符号，解调参考信号传输所采用的数字预编码为4个，切换单元为一个子载波。
接收端基于解调参考信号的12份子资源分别对存在对应关系的数据信号传输资源的12份子资源进行解调。
当数据信号的传输层数/流数v大于1的情况下，解调参考信号资源被划分为N1*N2*v份子资源，也可以理解为每N1*N2份解调参考信号子资源中的每一份解调参考信号子资源被进一步划分为v份更小的子资源，所述每一份解调参考信号子资源中的v份更小的子资源使用相同的波束和预编码，分别用于解调每个不同波束和预编码中至少一项传输下的数据信号的v层。
上述数据信号的传输资源和解调参考信号资源之间的对应关系为预先约定的，或者是通过信令通知的。
图6是根据本申请示例性实施例中传输分集SFBC传输方案下，不同模拟波束和数字预编码域数据信号传输资源对应关系示意图；图7是根据本申请示例性实施例中传输分集SFBC传输方案下，解调参考信号资源和数据信号传输资源对应关系示意图。
本示例性实施例中采用SFBC技术，并且考虑了多个波束。
如图6所示，为用于SFBC处理后的数据信号传输资源示意图，当UE移动速度比较快时，无法通过反馈获得准确的波束信息，因此为了保证SFBC处理后的数据信号的覆盖性能和传输鲁棒性，数据信号的传输可以在多个模拟波束范围内循环切换。每个模拟波束的切换单元为一个或一组OFDM符号。例如图6中，在数据信号传输资源区域中，数据信号在不同的时间单元上以不同的模拟波束进行传输，图中数据信号的切换单元为一个OFDM符号，共有3个不同的模拟波束可用于数据信号的传输，因此，在数据信号传输资源区域内，按照时域从前到后的顺序，不同OFDM符号上的SFBC数据信号分别以循环切换的方式使用3个模拟波束中的一个模拟波束进行传输。
其中，混合预编码结构下，对于第i符号和第l子载波上，数据信号经过SFBC之后的发送信号表示为如下形式，其中，当第一资源粒度为一个PRB对并且如上假设时，i的取值范围为0至13，l的取值范围为0至11：
Figure PCTCN2017095304-appb-000015
其中，
Figure PCTCN2017095304-appb-000016
为初始发送信号经过串行变并行后的两个数据信号；
这里的SFBC操作与LTE中相同，例如经过SFBC之后数据信号变为2个并行且近似正交的数据流
Figure PCTCN2017095304-appb-000017
这两个数据流所传输的信息是相同的，这两个数据流分别映射到两个子载波上，示例性地，映射到数据信号传输资源中每两个相邻的子载波上。
W(i)为第i符号上的模拟波束赋形权值，W(i)＝Ck，
Figure PCTCN2017095304-appb-000018
其中，L1为一个OFDM符号组内符号个数，即每L1个OFDM符号为一组使用一个相同的波束赋形权值，L2为波束赋形权值的取值范围下的波束赋形权值个数，例如图5中，L1＝1，L2＝3。
这里，SFBC数据信号未经过数字预编码权值的加权，其实也可以理解为数字预编码为一个单位矩阵，即SFBC处理后的信号先经过一个单位矩阵数字预编码之后再经过模拟波束的加权进行传输。
如图7所示，考虑解调参考信号配置的情况下，假设一个PRB对中的前3个OFDM符号用于传输解调参考信号，该解调参考信号主要用于解调SFBC处理后的两个数据流，考虑到数据流的传输使用了3个模拟波束，则解调参考信号资源将被划分为6份资源，例如先将解调参考信号资源划分为3个子资源(如图7中3个子资源分别为3个不同的OFDM符号)，解调参考信号在这3个子资源上分别采用与数据信号传输所采用的模拟波束相同的3个模拟波束分别进行传输，每个OFDM符号的子载波又被划分为2份，分别可用于解调该OFDM符号所对应的模拟波束下的数据传输的两个SFBC数据信号流，例如图7中数据信号经过SFBC处理后的两个数据信号1和数据信号2，不同模拟波束下的解调参考信号资源1和解调参考信号资源2分别用于解调对应模拟波束传输下两个数据信号。
图8是根据本申请实施例的混合波束赋形系统中的信息传输装置的结构框图。该装置用于实现上述实施例及示例性实施方式，已经进行过说明的不再赘述。如以下所使用的，术语“模块”可以实现预定功能的软件、硬件、或软件和硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。
如图8所示，本实施例提供的装置包括：
第一传输模块82，配置为将第一资源粒度划分为K1个第二资源粒度，并在所述K1个第二资源粒度上分别使用独立的模拟波束传输信息；以及
第二传输模块84，配置为将每个所述第二资源粒度划分为K2个第三资源粒度，并在所述K2个第三资源粒度上分别使用独立的数字预编码传输信息；
其中，用于传输所述信息的资源包括一个或多个所述第一资源粒度，K1和K2为正整数，且K1和K2中至少一项大于1。
在示例性实施方式中，所述第一类波束可通过第一类波束索引进行表征，所述第二类波束可通过第二类波束索引进行表征。
在示例性实施方式中，所述第一类波束可以是模拟波束，所述第二类波束可以是数字预编码。在本实施例中主要基于该情况对方案进行描述。
在示例性实施方式中，所述第一资源粒度在时域包含一个或一组OFDM符号，在频域包含一个或一组子载波；所述第二资源粒度包含所述第一资源粒度中至少一个OFDM符号；所述第三资源粒度包含所述第二资源粒度中至少一个子载波。
在示例性实施方式中，所述第一传输模块82还可以配置为在将所述第一资源粒度划分为N1*N2份第一子资源的情况下，将所述K1个(即全部)第二资源粒度划分为N1份第二子资源，并在所述N1份第二子资源上分别使用N1个不同的模拟波束传输信息；以及所述第二传输模块84还可以配置为将每个所述第二子资源中K2个第三资源粒度划分为N2份第三子资源，并在所述N2份第三子资源上分别使用N2个不同的数字预编码传输信息；其中，N1为小于或等于K1的正整数，N2为小于或等于K2的正整数。
在示例性实施方式中，所述第一传输模块82还可以配置为在将N1个模拟波束用于传输信息的情况下，按第一指定顺序在所述K1个第二资源粒度中的第i个第二资源粒度上使用第x个模拟波束传输信息，其中，i为小于或等于K1的正整数，x＝imodN1+1，x为小于或等于N1的正整数，mod表示取模。
在示例性实施方式中，所述第二传输模块84还可以配置为在将N2个数字预编码用于传输信息的情况下，按第二指定顺序在任意一个所述第二资源粒度中的第j个第三资源粒度上使用第y个数字预编码传输信息，其中，j为小于或等于K2的正整数，y＝jmodN2+1，y为小于或等于N2的正整数，mod表示取模。
在示例性实施方式中，所述第二传输模块84还可以配置为在将N1组数字预编码用于传输信息，且每组中包含N2个数字预编码的情况下，按第一指定顺序在所述K1个第二资源粒度中的第i个第二资源粒度中再按第二指定顺序在第j个第三资源粒度上使用第z1组中第z2个数字预编码传输信息，其中，z1＝imodN1+1，z2＝jmodN2+1，z1为小于或等于N1的正整数，z2为小于或等于N2的正整数，mod表示取模。
在示例性实施方式中，所述第一指定顺序为时域从前到后。
在示例性实施方式中，所述第二指定顺序为以下之一：频域从低到高；频域从高到低；先频域后时域，且频域从低到高或从低到高，时域从前到后。
在示例性实施方式中，所述信息包括通过控制信道或数据信道传输的信息。
在示例性实施方式中，所述装置还可以包括：配置模块，配置为给所述信息配置解调参考信号资源，并将所述解调参考信号资源划分为N1*N2份第一解调参考信号子资源，其中，所述N1*N2份第一解调参考信号子资源分别与所述N1*N2份第一子资源存在一一对应关系；其中，所述解调参考信号资源用于解调所述信息。
在示例性实施方式中，所述解调参考信号资源在时域上的位置位于所述信息之前或者位于所述信息的开始位置；其中，当所述解调参考信号资源位于所述信息的开始位置时，所述解调参考信号资源和所述信息在频域上分别占用不同的子载波。
在示例性实施方式中，所述解调参考信号资源包括M个解调参考信号端口，其中，M为正整数。
在示例性实施方式中，所述第一传输模块82还可以配置为将所述解调参 考信号资源划分为N1份第二解调参考信号子资源，在所述N1份第二解调参考信号子资源上分别使用不同的模拟波束传输所述解调参考信号；所述第二传输模块84还可以配置为将每份所述第二解调参考信号子资源分别划分为N2份第三解调参考信号子资源，在所述N2份第三解调参考信号子资源上分别使用不同的数字预编码传输所述解调参考信号。
在示例性实施方式中，分别在存在所述对应关系的第一解调参考信号子资源和第一子资源上使用相同的模拟波束及数字预编码传输所述解调参考信号和所述信息。
在示例性实施方式中，所述N1份第二解调参考信号子资源和所述N1份第二子资源之间存在一一对应关系，存在所述对应关系的第二解调参考信号子资源和第二子资源中的N2份第三解调参考信号子资源和第三子资源存在一一对应关系。
在示例性实施方式中，所述第一传输模块82还可以配置为分别在存在所述对应关系的第二解调参考信号子资源和第二子资源上使用相同的模拟波束传输所述解调参考信号和所述信息。
在示例性实施方式中，所述第二传输模块84还可以配置为分别在存在所述对应关系的第三解调参考信号子资源和第三子资源上使用相同的数字预编码传输所述解调参考信号和所述信息。
在示例性实施方式中，所述第一资源粒度为一个或多个系统最小调度时频单元。
在示例性实施方式中，所述第一资源粒度不包括除用于传输信息之外的资源单元。
需要说明的是，上述模块是可以通过软件或硬件来实现的，对于后者，可以通过以下方式实现，但不限于此：由同一处理器实现；或者，由不同的处理器实现。本申请实施例还提供了一种计算机可读介质。在本实施例中，上述计算机可读介质可以被设置为存储用于执行以下步骤的程序代码：
步骤S202，将第一资源粒度划分为K1个第二资源粒度，在所述K1个第二资源粒度上分别使用独立的模拟波束传输信息；以及
步骤S204，将每个所述第二资源粒度划分为K2个第三资源粒度，在所述K2个第三资源粒度上分别使用独立的数字预编码传输信息；
其中，K1和K2为正整数，且K1和K2中至少一项大于1。
在本实施例中，上述计算机可读介质可以包括但不限于：U盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、移动硬盘、磁碟或者光盘等各种可以存储程序代码的介质。
本实施例中的示例可以参考上述实施例及示例性实施方式中所描述的示例，本实施例在此不再赘述。
本领域普通技术人员可以理解，上文中所公开方法中的全部或某些步骤、系统、装置中的功能模块/单元可以被实施为软件、固件、硬件及其适当的组合。在硬件实施方式中，在以上描述中提及的功能模块/单元之间的划分不一定对应于物理组件的划分；例如，一个物理组件可以具有多个功能，或者一个功能或步骤可以由若干物理组件合作执行。某些组件或所有组件可以被实施为由处理器，如数字信号处理器或微处理器执行的软件，或者被实施为硬件，或者被实施为集成电路，如专用集成电路。这样的软件可以分布在计算机可读介质上，计算机可读介质可以包括计算机存储介质(或非暂时性介质)和通信介质(或暂时性介质)。如本领域普通技术人员公知的，术语计算机存储介质包括在用于存储信息(诸如计算机可读指令、数据结构、程序模块或其他数据)的任何方法或技术中实施的易失性和非易失性、可移除和不可移除介质。计算机存储介质包括但不限于RAM、ROM、EEPROM、闪存或其他存储器技术、CD-ROM、数字多功能盘(DVD)或其他光盘存储、磁盒、磁带、磁盘存储或其他磁存储装置、或者可以用于存储期望的信息并且可以被计算机访问的任何其他的介质。此外，本领域普通技术人员公知的是，通信介质通常包含计算机可读指令、数据结构、程序模块或者诸如载波或其他传输机制之类的调制数据信号中的其他数据，并且可包括任何信息递送介质。
以上所述仅为本申请的示例性实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。
工业实用性
本申请实施例提供一种混合波束赋形系统中的信息传输方法及装置，能够同时将两类不同的波束用于传输信息，改善信息传输鲁棒性，在保证信息传输覆盖范围的情况下增加了信息传输的可靠性。

Claims (42)

  1. 一种混合波束赋形系统中的信息传输方法，包括：
    将第一资源粒度划分为K1个第二资源粒度，在所述K1个第二资源粒度上分别使用独立的第一类波束传输信息；以及
    将每个所述第二资源粒度划分为K2个第三资源粒度，在所述K2个第三资源粒度上分别使用独立的第二类波束传输信息；
    其中，用于传输所述信息的资源包括一个或多个所述第一资源粒度，K1和K2为正整数，且K1和K2中至少一项大于1。
  2. 根据权利要求1所述的方法，其中，
    所述第一资源粒度在时域包含一个或一组正交频分复用OFDM符号，在频域包含一个或一组子载波；
    所述第二资源粒度包含所述第一资源粒度中至少一个OFDM符号；
    所述第三资源粒度包含所述第二资源粒度中至少一个子载波。
  3. 根据权利要求1所述的方法，在将所述第一资源粒度划分为N1*N2份第一子资源的情况下，所述方法包括：
    将全部所述第二资源粒度划分为N1份第二子资源，在所述N1份第二子资源上分别使用N1个不同的第一类波束传输信息；以及
    将每个所述第二子资源中K2个第三资源粒度划分为N2份第三子资源，在所述N2份第三子资源上分别使用N2个不同的第二类波束传输信息；
    其中，N1为小于或等于K1的正整数，N2为小于或等于K2的正整数。
  4. 根据权利要求3所述的方法，所述方法还包括：
    在将N1个第一类波束用于传输信息的情况下，按第一指定顺序在所述K1个第二资源粒度中的第i个第二资源粒度上使用第x个第一类波束传输信息，其中，i为小于或等于K1的正整数，x＝imodN1+1，x为小于或等于N1的正整数，mod表示取模。
  5. 根据权利要求3所述的方法，所述方法还包括：
    在将N2个第二类波束用于传输信息的情况下，按第二指定顺序在任意 一个所述第二资源粒度中的第j个第三资源粒度上使用第y个第二类波束传输信息，其中，j为小于或等于K2的正整数，y＝jmodN2+1，y为小于或等于N2的正整数，mod表示取模。
  6. 根据权利要求3所述的方法，所述方法还包括：
    在将N1组第二类波束用于传输信息，且每组中包含N2个第二类波束的情况下，按第一指定顺序在所述K1个第二资源粒度中的第i个第二资源粒度中再按第二指定顺序在第j个第三资源粒度上使用第z1组中第z2个第二类波束传输信息，其中，z1＝imodN1+1，z2＝jmodN2+1，z1为小于或等于N1的正整数，z2为小于或等于N2的正整数，mod表示取模。
  7. 根据权利要求4或6所述的方法，其中，所述第一指定顺序为时域从前到后。
  8. 根据权利要求5或6所述的方法，其中，所述第二指定顺序为以下之一：
    频域从低到高；
    频域从高到低；
    先频域后时域，且频域从低到高或从低到高，时域从前到后。
  9. 根据权利要求1所述的方法，其中，所述信息包括通过控制信道或数据信道传输的信息。
  10. 根据权利要求3所述的方法，所述方法还包括：
    为所述信息配置解调参考信号资源，并将所述解调参考信号资源划分为N1*N2份第一解调参考信号子资源，所述N1*N2份第一解调参考信号子资源分别与所述N1*N2份第一子资源存在一一对应关系；
    其中，所述解调参考信号资源用于解调所述信息。
  11. 根据权利要求10所述的方法，其中，所述解调参考信号资源在时域上的位置位于所述信息之前或者位于所述信息的开始位置；当所述解调参考信号资源位于所述信息的开始位置时，所述解调参考信号资源和所述信息在频域上分别占用不同的子载波。
  12. 根据权利要求10所述的方法，其中，所述解调参考信号资源包括M个解调参考信号端口，其中，M为正整数。
  13. 根据权利要求10所述的方法，所述方法还包括：
    将所述解调参考信号资源划分为N1份第二解调参考信号子资源，在所述N1份第二解调参考信号子资源上分别使用不同的第一类波束传输所述解调参考信号；
    将每份所述第二解调参考信号子资源分别划分为N2份第三解调参考信号子资源，在所述N2份第三解调参考信号子资源上分别使用不同的第二类波束传输所述解调参考信号。
  14. 根据权利要求10所述的方法，所述方法还包括：
    分别在存在所述对应关系的第一解调参考信号子资源和第一子资源上使用相同的第一类波束及第二类波束传输所述解调参考信号和所述信息。
  15. 根据权利要求13所述的方法，其中，所述N1份第二解调参考信号子资源和所述N1份第二子资源之间存在一一对应关系，存在所述对应关系的第二解调参考信号子资源和第二子资源中的N2份第三解调参考信号子资源和第三子资源存在一一对应关系。
  16. 根据权利要求15所述的方法，所述方法还包括：
    分别在存在所述对应关系的第二解调参考信号子资源和第二子资源上使用相同的第一类波束传输所述解调参考信号和所述信息。
  17. 根据权利要求15所述的方法，所述方法还包括：
    分别在存在所述对应关系的第三解调参考信号子资源和第三子资源上使用相同的第二类波束传输所述解调参考信号和所述信息。
  18. 根据权利要求1至17中任一项所述的方法，其中，所述第一资源粒度为一个或多个系统最小调度时频单元。
  19. 根据权利要求1至17中任一项所述的方法，其中，所述第一资源粒度不包括除用于传输信息之外的资源单元。
  20. 根据权利要求1至17中任一项所述的方法，其中，所述第一类波 束通过第一类波束索引进行表征，所述第二类波束通过第二类波束索引进行表征。
  21. 根据权利要求1至17中任一项所述的方法，其中，所述第一类波束为模拟波束，所述第二类波束为数字预编码。
  22. 一种混合波束赋形系统中的信息传输装置，包括：
    第一传输模块，配置为将第一资源粒度划分为K1个第二资源粒度，并在所述K1个第二资源粒度上分别使用独立的第一类波束传输信息；以及
    第二传输模块，配置为将每个所述第二资源粒度划分为K2个第三资源粒度，并在所述K2个第三资源粒度上分别使用独立的第二类波束传输信息；
    其中，用于传输所述信息的资源包括一个或多个所述第一资源粒度，K1和K2为正整数，且K1和K2中至少一项大于1。
  23. 根据权利要求22所述的装置，其中，
    所述第一资源粒度在时域包含一个或一组正交频分复用OFDM符号，在频域包含一个或一组子载波；
    所述第二资源粒度包含所述第一资源粒度中至少一个OFDM符号；
    所述第三资源粒度包含所述第二资源粒度中至少一个子载波。
  24. 根据权利要求22所述的装置，其中，所述第一传输模块还配置为在将所述第一资源粒度划分为N1*N2份第一子资源的情况下，将全部所述第二资源粒度划分为N1份第二子资源，并在所述N1份第二子资源上分别使用N1个不同的第一类波束传输信息；以及
    所述第二传输模块还配置为将每个所述第二子资源中K2个第三资源粒度划分为N2份第三子资源，并在所述N2份第三子资源上分别使用N2个不同的第二类波束传输信息；
    其中，N1为小于或等于K1的正整数，N2为小于或等于K2的正整数。
  25. 根据权利要求24所述的装置，其中，所述第一传输模块还配置为在将N1个第一类波束用于传输信息的情况下，按第一指定顺序在所述K1个第二资源粒度中的第i个第二资源粒度上使用第x个第一类波束传输信息， 其中，i为小于或等于K1的正整数，x＝imodN1+1，x为小于或等于N1的正整数，mod表示取模。
  26. 根据权利要求24所述的装置，其中，所述第二传输模块还配置为在将N2个第二类波束用于传输信息的情况下，按第二指定顺序在任意一个所述第二资源粒度中的第j个第三资源粒度上使用第y个第二类波束传输信息，其中，j为小于或等于K2的正整数，y＝jmodN2+1，y为小于或等于N2的正整数，mod表示取模。
  27. 根据权利要求24所述的装置，其中，所述第二传输模块还配置为在将N1组第二类波束用于传输信息，且每组中包含N2个第二类波束的情况下，按第一指定顺序在所述K1个第二资源粒度中的第i个第二资源粒度中再按第二指定顺序在第j个第三资源粒度上使用第z1组中第z2个第二类波束传输信息，其中，z1＝imodN1+1，z2＝jmodN2+1，z1为小于或等于N1的正整数，z2为小于或等于N2的正整数，mod表示取模。
  28. 根据权利要求25或27所述的装置，其中，所述第一指定顺序为时域从前到后。
  29. 根据权利要求26或27所述的装置，其中，所述第二指定顺序为以下之一：
    频域从低到高；
    频域从高到低；
    先频域后时域，且频域从低到高或从低到高，时域从前到后。
  30. 根据权利要求22所述的装置，其中，所述信息包括通过控制信道或数据信道传输的信息。
  31. 根据权利要求24所述的装置，所述装置还包括：
    配置模块，配置为给所述信息配置解调参考信号资源，并将所述解调参考信号资源划分为N1*N2份第一解调参考信号子资源，其中，所述N1*N2份第一解调参考信号子资源分别与所述N1*N2份第一子资源存在一一对应关系；其中，所述解调参考信号资源用于解调所述信息。
  32. 根据权利要求31所述的装置，其中，所述解调参考信号资源在时 域上的位置位于所述信息之前或者位于所述信息的开始位置；其中，当所述解调参考信号资源位于所述信息的开始位置时，所述解调参考信号资源和所述信息在频域上分别占用不同的子载波。
  33. 根据权利要求31所述的装置，其中，所述解调参考信号资源包括M个解调参考信号端口，其中，M为正整数。
  34. 根据权利要求31所述的装置，其中，
    所述第一传输模块还配置为将所述解调参考信号资源划分为N1份第二解调参考信号子资源，在所述N1份第二解调参考信号子资源上分别使用不同的第一类波束传输所述解调参考信号；
    所述第二传输模块还配置为将每份所述第二解调参考信号子资源分别划分为N2份第三解调参考信号子资源，在所述N2份第三解调参考信号子资源上分别使用不同的第二类波束传输所述解调参考信号。
  35. 根据权利要求31所述的装置，其中，分别在存在所述对应关系的第一解调参考信号子资源和第一子资源上使用相同的第一类波束及第二类波束传输所述解调参考信号和所述信息。
  36. 根据权利要求34所述的装置，其中，所述N1份第二解调参考信号子资源和所述N1份第二子资源之间存在一一对应关系，存在所述对应关系的第二解调参考信号子资源和第二子资源中的N2份第三解调参考信号子资源和第三子资源存在一一对应关系。
  37. 根据权利要求36所述的装置，其中，所述第一传输模块还配置为分别在存在所述对应关系的第二解调参考信号子资源和第二子资源上使用相同的第一类波束传输所述解调参考信号和所述信息。
  38. 根据权利要求36所述的装置，其中，所述第二传输模块还配置为分别在存在所述对应关系的第三解调参考信号子资源和第三子资源上使用相同的第二类波束传输所述解调参考信号和所述信息。
  39. 根据权利要求22至38中任一项所述的装置，其中，所述第一资源粒度为一个或多个系统最小调度时频单元。
  40. 根据权利要求22至38中任一项所述的装置，其中，所述第一资源 粒度不包括除用于传输信息之外的资源单元。
  41. 根据权利要求22至38中任一项所述的装置，其中，所述第一类波束通过第一类波束索引进行表征，所述第二类波束通过第二类波束索引进行表征。
  42. 根据权利要求22至38中任一项所述的装置，其中，所述第一类波束为模拟波束，所述第二类波束为数字预编码。
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