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WO2016015190A1 - Procédé et dispositif de transmission d'informations - Google Patents

Procédé et dispositif de transmission d'informations Download PDF

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Publication number
WO2016015190A1
WO2016015190A1 PCT/CN2014/083114 CN2014083114W WO2016015190A1 WO 2016015190 A1 WO2016015190 A1 WO 2016015190A1 CN 2014083114 W CN2014083114 W CN 2014083114W WO 2016015190 A1 WO2016015190 A1 WO 2016015190A1
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WO
WIPO (PCT)
Prior art keywords
information
symbol
fbmc
modulation
time
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
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PCT/CN2014/083114
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English (en)
Chinese (zh)
Inventor
徐修强
吴艺群
张舜卿
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to PCT/CN2014/083114 priority Critical patent/WO2016015190A1/fr
Publication of WO2016015190A1 publication Critical patent/WO2016015190A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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

Definitions

  • Embodiments of the present invention relate to the field of communications and, more particularly, to methods and apparatus for transmitting information. Background technique
  • Orthogonal Frequency Division Multiplexing is a multi-carrier modulation and demodulation technology widely used in fourth-generation cellular communication systems, such as Long-Term Evolution (LTE), global. Worldwide Interoperability for Microwave Access (WiMAX) system.
  • a transmitting end performs OFDM modulation on user data by an Inverse Fast Fourier Transform (IFFT) to generate a time domain OFDM symbol, and inserts a cyclic prefix (Cyclic Prefix, before the time domain OFDM symbol).
  • CP cyclic prefix
  • the receiving end performs a CP removal operation on the received user data, and performs OFDM demodulation by Fast Fourier Transform (FFT).
  • IFFT Inverse Fast Fourier Transform
  • FFT Fast Fourier Transform
  • This implementation makes the sub-carriers in the frequency domain of the OFDM system orthogonal to each other, and there is no mutual interference between the system sub-carriers, so it has good link performance.
  • the spectrum leakage of OFDM systems is serious, and the introduction of CP has caused a waste of resources to some extent.
  • Filter-Bank Multi-Carrier (FBMC) technology is also a multi-carrier modulation and demodulation technology.
  • the transmitting end and the receiving end respectively perform the FBMC modulation and demodulation by using the user's frequency domain data and the received time domain data through a Poly-Phase Network (PPN) filter bank.
  • PPN Poly-Phase Network
  • the multi-phase network filter bank at the transmitting end is called a Synthesis Filter Bank (SFB), and is composed of an IFFT module and a PPN module.
  • the multi-phase network filter bank at the receiving end is called an analysis filter bank. , AFB ), consists of a PPN module and an FFT module.
  • the FBMC system has better spectral out-of-band leakage characteristics and can flexibly use scattered spectrum resources.
  • the FBMC system does not need to insert the CP before transmitting the signal, so it has better spectrum utilization than the OFDM system.
  • the FBMC system uses offset quadrature amplitude modulation (Offset) at the transmitting and receiving ends, respectively.
  • Offset offset quadrature amplitude modulation
  • Quadrature Amplitude Modulation, OQAM Quadrature Amplitude Modulation
  • demodulation techniques each frequency domain symbol
  • the unit is divided into two character number units: the real part and the imaginary part.
  • This implementation results in loss of orthogonality between adjacent subcarriers of the FBMC system, and mutual interference between subcarriers.
  • interference of the transmitted data or other subcarriers on the pilot subcarriers may result in inaccurate channel estimation based on the pilot.
  • the receiving end cancels the interference based on the impulse response between adjacent subcarriers estimated by the filter coefficients in the filter bank.
  • the existing research found that in practical applications, the estimated impulse response is not consistent with the actual impulse response, so that the effect of interference cancellation using the estimated impulse response is not obvious, and the channel estimation result is compared with the actual channel deviation. Big. This situation is more apparent in the Multi-Input Multi-Output (MIMO) system, making the FBMC system unfavorable for multi-antenna transmission. Therefore, how to perform channel estimation in the FBMC system to obtain a more accurate channel estimation result is a technical problem to be solved in the field.
  • MIMO Multi-Input Multi-Output
  • Embodiments of the present invention provide a method and apparatus for transmitting information, which can avoid interference between transmitted pilots and other information.
  • the embodiment of the present invention provides a method for transmitting information, including: performing time-frequency resource mapping on the first to-be-sent information and the second to-be-sent information, so that the first to-be-sent information is occupied in a subframe.
  • the first symbol is located in front of the second symbol occupied by the second to-be-sent information in the subframe, where the first to-be-sent information includes at least one of the following: pilot and bottom control information, the second to-be
  • the transmitting information includes at least one of the following: user data, system information, and higher layer control information; modulating the first to-be-sent information by using an orthogonal frequency division multiplexing OFDM technique, obtaining first modulation information, and using the filter bank Multi-carrier FBMC technology modulates the second to-be-sent information to obtain second modulation information; inserting a guard interval between the first modulation information and the second modulation information, the guard interval is used to prevent the first modulation information and the first Interference is generated between the two modulation information; the first modulation information, the guard interval, and the second modulation information are sequentially transmitted to the receiving end.
  • performing time-frequency resource mapping on the first to-be-sent information and the second to-be-sent information includes: performing time-frequency resource mapping on the first to-be-sent information, so that the first to-be-polished The frequency band occupied by the transmitted information does not include the frequency band located at the edge of the system band.
  • the subframe includes a MOT DM OFDM symbol and an MFBMC FBMC symbol, where M OTDM ⁇ 1, M FBMC ⁇ 1;
  • Information and second to-be-sent information are mapped to time-frequency resources, so that the first to-be The first symbol occupied by the sending information in the subframe is located in front of the second symbol occupied by the second to-be-sent information in the subframe, and includes: performing time-frequency resource mapping on the first to-be-sent information, so that the first The information to be transmitted occupies at least one OFDM symbol of the M OTDM OFDM symbols, the at least one OFDM symbol includes the first symbol, and performs time-frequency resource mapping on the second to-be-sent information, so that the second to-be-sent information is occupied.
  • the first OFDM symbol and the second OFDM symbol in the Mo FDM OFDM symbols are separated by at least one FBMC symbol of the M FBMC FBMC symbols.
  • the OFDM symbol occupied by the underlying control information is located in all FBMC symbols in the M FBMC FBMC symbols. front.
  • the OFDM OFDM technology modulates the first to-be-transmitted information, obtains first modulation information, and uses a filter bank multi-carrier.
  • the FBMC technology modulates the second to-be-sent information to obtain the second modulation information, including: determining that the ith symbol in the subframe is an OFDM symbol or an FBMC symbol, where, l ⁇ i ⁇ N, N is a symbol included in the subframe.
  • the ith symbol is an OFDM symbol, perform OFDM modulation on the information carried on the ith symbol; if the ith symbol is an FBMC symbol, determine that the i+1th symbol in the subframe is FBMC symbol or OFDM symbol; if the i+1th symbol is an FBMC symbol, buffering information carried on the i th symbol; if the i+1 th symbol is an OFDM symbol, the i th symbol and the buffered The information carried on at least one FBMC symbol is FBMC modulated.
  • a method for transmitting information including: receiving a data stream on a downlink transmission channel, where the data stream sequentially includes first modulation information, a guard interval, and second modulation information, where the guard interval is used for Preventing interference between the first modulation information and the second modulation information; demodulating the first modulation information by using OFDM technology to obtain first reception information, and demodulating the second modulation information by using FBMC technology to obtain the first Receiving information, wherein the first received information includes a pilot, the second received information includes at least one of the following: user data, system information, and a higher layer Controlling information; determining channel information of the first time-frequency region occupied by the first received information according to the pilot included in the first received information; determining the second received information according to channel information of the first time-frequency region Channel information of the occupied second time-frequency region.
  • the first time-frequency region does not include a frequency band located at an edge of the system band.
  • any symbol included in the first time-frequency domain may be located before any symbol included in the second time-frequency region.
  • the first time-frequency region includes multiple first sub-time-frequency regions
  • the second time-frequency region includes at least one second sub-time-frequency region.
  • the two first sub-time-frequency regions of the plurality of first sub-time-frequency regions are spaced apart by a second sub-time-frequency region of the at least one second sub-time-frequency region.
  • the first receiving information further includes the bottom layer control information
  • the method further includes: determining, according to the channel information of the first time-frequency region, the first receiving information The bottom layer control information is decoded; and the second received information is decoded according to channel information of the second time-frequency region and bottom layer control information obtained by decoding.
  • the third aspect provides an apparatus for transmitting information, including: a resource mapping unit, configured to perform time-frequency resource mapping on the first to-be-sent information and the second to-be-sent information, so that the first to-be-sent information is in a subframe.
  • the first symbol that is occupied is located in front of the second symbol that the second to-be-sent information is occupied in the subframe, where the first to-be-sent information includes at least one of the following: pilot and bottom control information, the The second to-be-sent information includes at least one of the following: user data, system information, and upper layer control information; and a modulating unit, configured to modulate the first to-be-sent information mapped by the resource mapping unit by using an orthogonal frequency division multiplexing OFDM technology Obtaining first modulation information, and modulating the second to-be-sent information mapped by the resource mapping unit by using a filter bank multi-carrier FBMC technology to obtain second modulation information; and inserting, for obtaining the first part in the modulation unit Inserting
  • the resource mapping unit includes: a first resource mapping sub-unit, configured to perform time-frequency resource mapping on the first to-be-sent information, so that the frequency band occupied by the first to-be-sent information Bands located at the edge of the system band are not included.
  • the subframe includes MQ FDM MFBMC OFDM symbols and a symbol FBMC, wherein, M 0FDM ⁇ 1, M FBMC ⁇ 1 ;
  • the resource mapping unit comprises: a second sub-resource mapping unit for transmitting the information to be a first time-frequency resource mapping So that the first to-be-sent information occupies at least one OFDM symbol in the MOTDM OFDM symbol, the at least one OFDM symbol includes the first symbol, and the third resource mapping sub-unit is configured to perform the second to-be-sent information
  • the time-frequency resource is mapped such that the second to-be-sent information occupies at least one FBMC symbol in the M FBMC FBMC symbols, the at least one FBMC symbol including the second symbol.
  • the first OFDM symbol and the second OFDM symbol in the Mo FDM OFDM symbols are at least one of the M FBMC FBMC symbols
  • the FBMC symbols are spaced apart.
  • the OFDM symbol occupied by the underlying control information is located in all FBMC symbols in the M FBMC FBMC symbols. front.
  • the modulating unit includes: a determining subunit, configured to determine that an ith symbol in a subframe is an OFDM symbol or an FBMC symbol, where, l ⁇ i ⁇ N, N is the number of symbols included in the subframe; an OFDM modulation sub-unit, configured to perform OFDM modulation on the information carried on the i-th symbol if the determining sub-unit determines that the i-th symbol is an OFDM symbol;
  • the determining subunit is further configured to: if the ith symbol is determined to be an FBMC symbol, determine that the i+1th symbol in the subframe is an FBMC symbol or an OFDM symbol; and a buffer subunit, if the determining subunit determines the The i+1th symbol is an FBMC symbol, and the information carried on the i th symbol is buffered; the FBMC modulation subunit is configured to: if the determining subunit determines that the i+1th symbol is an OFDM
  • the fourth aspect provides another apparatus for transmitting information, including: a receiving unit, configured to receive a data stream on a downlink transmission channel, where the data stream includes first modulation information, a guard interval, and second modulation information, where The guard interval is used to prevent interference between the first modulation information and the second modulation information.
  • the demodulation unit is configured to demodulate the first modulation information received by the receiving unit by using an OFDM technology to obtain a first reception.
  • the second received information is obtained, where the first received information includes a pilot, the second received information includes at least one of the following: user data, system information, and upper layer control information; and determining unit, configured to use the solution a pilot included in the first received information obtained by the tuning unit, determining channel information of the first time-frequency region occupied by the first received information, and determining the second receiving according to channel information of the first time-frequency region Channel information of the second time-frequency region occupied by the information.
  • the first time-frequency region does not include a frequency band located at an edge of the system band.
  • any symbol included in the first time-frequency region may be located in the first Any symbol included in the second time-frequency region before.
  • the first time-frequency region includes multiple first sub-time-frequency regions
  • the second time-frequency region includes at least one second sub-time-frequency region.
  • the two first sub-time-frequency regions of the plurality of first sub-time-frequency regions are spaced apart by a second sub-time-frequency region of the at least one second sub-time-frequency region.
  • the first receiving information further includes the bottom layer control information.
  • the device further includes: a decoding unit, configured to determine the first time frequency according to the determining unit The channel information of the area, the bottom control information in the first received information is decoded, and the second received information is decoded according to the channel information of the second time-frequency region and the underlying control information obtained by the decoding. .
  • the method and device for transmitting information provided by the embodiment of the present invention, when the time-frequency resource mapping is performed, the symbol occupied by the first to-be-sent information is located in front of the symbol occupied by the second to-be-sent information, and
  • the first to-be-transmitted information is OFDM-modulated
  • the second to-be-transmitted information is FBMC-modulated, where the first to-be-sent information includes at least one of pilot and bottom layer control information, and Inserting a guard interval between the modulation information and the second modulation information to prevent interference between the first modulation information and the second modulation information, and sequentially transmitting the first modulation information, the guard interval, and the second to the receiving end
  • the modulation information can avoid interference between the pilot and other information, thereby improving the accuracy of channel estimation based on the pilot.
  • FIG. 1 is a schematic flowchart of a method for transmitting information according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of a method of transmitting information according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a subframe structure according to an embodiment of the present invention.
  • FIG. 4 is another schematic diagram of a subframe structure according to an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart of a method for modulating information to be sent according to an embodiment of the present invention.
  • FIG. 6 is a schematic flowchart of a method for transmitting information according to another embodiment of the present invention.
  • FIG. 7 is a schematic block diagram of an apparatus for transmitting information according to an embodiment of the present invention.
  • FIG. 8 is a schematic block diagram of an apparatus for transmitting information according to another embodiment of the present invention.
  • FIG. 9 is a schematic block diagram of an apparatus for transmitting information according to still another embodiment of the present invention.
  • FIG. 10 is a schematic block diagram of an apparatus for transmitting information according to still another embodiment of the present invention. detailed description
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access
  • a user equipment may be referred to as a terminal, a mobile station (MS), a mobile terminal (Mobile Terminal), etc.
  • the user equipment may be Radio Access Network (RAN) Communicating with one or more core networks
  • the user equipment may be a mobile phone (or called a cellular phone), a computer with a mobile terminal, etc.
  • the user device may also be portable, pocket-sized, handheld, built-in computer Or in-vehicle mobile devices that exchange voice and/or data with a wireless access network.
  • the base station may be a base station in GSM or CDMA.
  • BTS Base Transceiver Station
  • NodeB base station
  • eNB evolved Node B
  • LTE Long Term Evolution
  • the method for transmitting information provided by the embodiment of the present invention is mainly applied to the downlink transmission, but can also be applied to the uplink transmission, which is not limited by the embodiment of the present invention.
  • the method 100 may be performed by any suitable transmitting end, for example, may be performed by a network element such as a base station, a base station controller, or a network side server.
  • a network element such as a base station, a base station controller, or a network side server.
  • the embodiment is not limited to this.
  • S110 Perform time-frequency resource mapping on the first to-be-sent information and the second to-be-sent information, so that the first symbol that the first to-be-sent information is occupied in the subframe is located in the second to-be-sent information occupied in the subframe.
  • the second symbol is preceded by the first to-be-sent information comprising at least one of: a pilot and an underlying control information, the second to-be-sent information comprising at least one of the following: user data, system information, and upper layer Control information.
  • the first to-be-sent information may occupy at least one symbol of a subframe, the at least one symbol includes a first symbol; the second to-be-sent information may occupy at least one symbol in the subframe, and the at least one symbol includes a second symbol, Wherein the first symbol is located before the second symbol.
  • the pilot may be specifically a reference signal in the LTE system, but the embodiment of the present invention does not limit this.
  • the underlying control information may be specifically the control information carried in the Physical Downlink Control Channel (PDCCH) of the LTE system, for example, Downlink Control Information (DCI), and the like.
  • the high-level control information may be specifically a Radio Resource Control (RRC) signaling or a Non-Access Stratum (NAS) carried in a physical downlink shared channel (PDSCH) of the LTE system.
  • RRC Radio Resource Control
  • NAS Non-Access Stratum
  • PDSCH physical downlink shared channel
  • S120 modulate the first to-be-transmitted information by using an orthogonal frequency division multiplexing (OFDM) OFDM technology to obtain first modulation information, and modulate the second to-be-sent information by using a filter bank multi-carrier FBMC technology. Obtaining second modulation information.
  • OFDM orthogonal frequency division multiplexing
  • the transmitting end After the transmitting end modulates the first to-be-sent information and the second to-be-sent information, the sequence of the symbols occupied by the first to-be-sent information and the second to-be-sent information may be maintained. Specifically, the transmitting end may perform an IFFT operation to modulate the first to-be-sent information, and may insert a CP before the modulation information obtained by the IFFT operation to eliminate the multi-path propagation between the first modulation information.
  • ISI Inter-Symbol Interference
  • the transmitting end may use the SFB to modulate the second information to be sent, and use the OQAM technology in the modulating process, but the embodiment of the present invention does not limit this.
  • the transmitting end may determine the guard interval, and serially splicing the first modulation information, the guard interval and the second modulation information in time series to form a baseband signal.
  • the guard interval is between the first modulation information and the second modulation information, and is used to prevent interference between the first modulation information and the second modulation information due to multipath propagation.
  • the length of the guard interval may be greater than or equal to the maximum multipath delay of the system, and the specific length of the guard interval may be configured according to actual needs, which is not limited by the embodiment of the present invention.
  • the guard interval may include multiple serial data points, and the multiple serial data points may be arbitrarily set, for example, the multiple serial data points are multiple data points in the second modulation information, etc. The embodiment of the present invention does not limit this.
  • the first modulation information, the guard interval, and the second modulation information are sequentially sent to the receiving end.
  • the transmitting end can perform radio frequency processing on the baseband signal formed in S130, and send the radio frequency processed baseband signal.
  • the transmitting end sequentially sends the first modulation information, the guard interval, and the second modulation information to the receiving end in a time-increasing order, that is, transmitting the first modulation information and the second modulation information in a time division multiplexing manner, which can reduce the first A possibility of interference between the modulation information and the second modulation information, and reducing the possibility of interference between the first modulation information.
  • the receiving end may first perform channel estimation according to the pilot included in the first modulation information, and may decode the second modulation information according to the underlying control information included in the first modulation information.
  • the method for transmitting information according to the embodiment of the present invention is such that when the time-frequency resource mapping is performed, the symbol occupied by the first to-be-sent information is located in front of the symbol occupied by the second to-be-sent information, and the first to be sent is sent.
  • the information is subjected to OFDM modulation, and the second to-be-sent information is performed.
  • the first to-be-sent information includes at least one of a pilot and an underlying control information
  • a guard interval is inserted between the first modulation information and the second modulation information obtained by the modulation to prevent the first Interference is generated between a modulation information and the second modulation information
  • the first modulation information, the guard interval, and the second modulation information are sequentially transmitted to the receiving end, so that interference between the pilot and other information can be avoided, thereby improving the basis
  • the pilot performs the accuracy of channel estimation.
  • the serial baseband signal includes first modulation information, guard interval, and second modulation information in a time increasing order, and accordingly, When the transmitting end transmits the serial baseband signal, the first modulation information, the guard interval, and the second modulation information are sequentially transmitted in time increment.
  • the transmitting end may perform time-frequency resource mapping on the first to-be-sent information and the second to-be-sent information in multiple manners.
  • the outband fading of the OFDM technology is slow, and the sending end performs time-frequency resource mapping on the first to-be-sent information, so that the frequency band occupied by the first to-be-sent information does not include a frequency band located at an edge of the system band.
  • the system frequency band refers to a frequency domain resource used by the system, thereby reducing spectrum leakage of the first modulation information.
  • the FBMC technology has a fast out-of-band fading. Therefore, when the transmitting end performs the time-frequency resource mapping on the second to-be-sent information, the second to-be-sent information occupies the entire system band, but the embodiment of the present invention is not limited thereto. this.
  • the sending end may map the first to-be-sent information and the second to-be-sent information into the first subframe.
  • the first subframe may comprise M 0FDM FBMC M OFDM symbols and a symbol FBMC, wherein, M 0FDM ⁇ 1, M FBMC ⁇ 1 ;
  • S110 performing time-frequency resource mapping on the first to-be-sent information and the second to-be-sent information, so that the first symbol to be used in the first to-be-sent information is located in the second to-be-sent information in the sub- In front of the second symbol occupied in the frame, including:
  • Time-frequency resource mapping is performed on the second to-be-sent information, such that the second to-be-sent information occupies at least one FBMC symbol in the M FBMC FBMC symbols, and the at least one FBMC symbol includes the second symbol.
  • the subframe may comprise M 0FDM FBMC M OFDM symbols and a symbol FBMC, wherein
  • Mo FDM ⁇ l , M FBMC ⁇ 1 where the MOTDM OFDM symbols are present in the M FBMC Some or all of the FBMC symbols precede the OFDM symbols.
  • the foremost at least one symbol in the subframe is an OFDM symbol, that is, the symbol with the smallest sequence number in the subframe is an OFDM symbol, but the embodiment of the present invention is not limited thereto.
  • the first to-be-sent information may occupy part or all of the OFDM symbols in the Mo FDM OFDM symbols
  • the second to-be-sent information may occupy some or all of the FBMC symbols in the MFBMC FBMC symbols
  • the at least one The first symbol included in the OFDM symbol is located before the second symbol included in the at least one FBMC symbol, which is not limited by the embodiment of the present invention.
  • any one of the Mo FDM OFDM symbols is located before any of the M FBMC FBMC symbols.
  • the MOTDM OFDM symbols are located before the M FBMC FBMC symbols, and all OFDM symbols occupied by the first to-be-sent information are located before all FBMC symbols occupied by the second to-be-transmitted information.
  • a plurality of adjacent symbols in a subframe are OFDM symbols, and a plurality of adjacent symbols are FBMC symbols, that is, M OTDM >1, M FBMC >1,
  • the plurality of adjacent OFDM symbols are located in front of the plurality of adjacent FBMC symbols, that is, any one of the MOFDM OFDM symbols is located before any one of the M FBMC FBMC symbols, but the embodiment of the present invention does not Limited to this.
  • the embodiment of the present invention is not limited thereto.
  • M 0FDM> 1 a further embodiment, the M 0FDM OFDM symbols in the first OFDM symbol and second OFDM symbols separated by a one of the MFB MC symbols FBMC FBMC at least one symbol interval.
  • the first OFDM symbol may be specifically one or more adjacent symbols
  • the second OFDM symbol may also be specifically one or more adjacent symbols, that is, multiple adjacent ones of the Mo FDM OFDM symbols.
  • An OFDM symbol and a plurality of adjacent second OFDM symbols may be spaced apart by at least one FBMC symbol.
  • the first OFDM symbol, the at least one FBMC symbol, and the second OFDM symbol may be sequentially distributed, where the at least one FBMC symbol may be the Some or all of the FBMC symbols in the FBMC symbols of the MFBMC are not limited in this embodiment of the present invention.
  • the OFDM symbol occupied by the underlying control information is located in front of all FBMC symbols in the MFBMC FBMC symbols.
  • the bottom layer control information may occupy one or more OFDM symbols with a smaller sequence number in the Mo FDM OFDM symbols, but the embodiment of the present invention is not limited thereto.
  • the subframe includes two OFDM symbol sets, that is, a first OFDM symbol set and a second OFDM symbol set, where the first OFDM symbol set includes Mi adjacent OFDM symbols, and the second OFDM The symbol set includes M 2 adjacent OFDM symbols,
  • the two OFDM symbol sets and the symbol cross-distribution in the two FBMC symbol sets that is, adjacent OFDM symbols in the first OFDM symbol set, M 3 adjacent FBMC symbols in the first FBMC symbol set,
  • the M 2 adjacent OFDM symbols in the second OFDM symbol set and the adjacent FBMC symbols in the second FBMC symbol set are sequentially arranged.
  • the transmitting end may map the first to-be-transmitted information to at least one OFDM symbol in the first OFDM symbol set and/or at least one OFDM in the second OFDM symbol set. Symbolically, and mapping the second to-be-transmitted information to at least one FBMC symbol in the first FBMC symbol set and/or at least one FBMC symbol in the second FBMC symbol set. If the first to-be-sent information includes the underlying control information, the transmitting end may map the underlying control information to at least one OFDM symbol in the first OFDM symbol set, but the embodiment of the present invention is not limited thereto.
  • the first modulation information may be obtained, and after the information carried on the symbols in the second OFDM symbol set is modulated, And a first modulation information; correspondingly, after the transmitting end modulates the information carried by the first FBMC symbol set and the symbol in the second FBMC symbol set, two second modulation information can be obtained, And the first modulation information corresponding to the first OFDM symbol set is in a second corresponding to the first FBMC symbol set Before the modulation information, and the first modulation information corresponding to the second OFDM symbol set is before the second modulation information corresponding to the second FBMC symbol set, so that the transmitting end can be in any two adjacent A guard interval is inserted between a modulation information and the second modulation information, but the embodiment of the present invention does not limit this.
  • S120 modulating the first to-be-transmitted information by using an orthogonal frequency division multiplexing (OFDM) OFDM technology, obtaining first modulation information, and modulating the second to-before by using a filter bank multi-carrier FBMC technology Sending information to obtain second modulation information, including:
  • OFDM orthogonal frequency division multiplexing
  • the ith symbol in the subframe is an OFDM symbol or an FBMC symbol, where l ⁇ i ⁇ N, N is the number of symbols included in the subframe;
  • the ith symbol is an OFDM symbol, performing OFDM modulation on the information carried on the i th symbol;
  • the ith symbol is an FBMC symbol, determining that the i+1th symbol in the subframe is an FBMC symbol or an OFDM symbol;
  • the i+1th symbol is an FBMC symbol, buffering information carried on the i th symbol; if the i+1 th symbol is an OFDM symbol, the i th symbol and the cached at least one FBMC symbol The carried information is FBMC modulated.
  • the transmitting end may separately perform OFDM modulation on the information carried in each OFDM symbol. Therefore, when the transmitting end determines that the ith symbol is an OFDM symbol, the information carried on the OFDM symbol may be directly used by the OFDM technology. modulation.
  • the transmitting end can perform FBMC modulation on the information carried on the plurality of adjacent FBMC symbols. At this time, when the transmitting end determines that the ith symbol is the FBMC symbol, the next symbol of the i-th symbol can be further determined.
  • the transmitting end may buffer the information carried on the i-th symbol until an OFDM symbol is detected or the last symbol of the subframe is detected, and then the sending
  • the FBMC technology may be used to modulate the information carried on the cached at least one FBMC symbol, but the embodiment of the present invention is not limited thereto.
  • FIG. 5 shows a schematic flow diagram of a method 200 of modulating the information to be transmitted under the subframe structure shown in FIG.
  • the method 200 is used to modulate information carried on N symbols (symbols 1 to N) included in a subframe, where the N symbols are composed of Mo FDM OFDM symbols and M FBMCs .
  • FBMC symbols can carry information to be transmitted on the first M 0FDM OFDM symbols of the at least one OFDM symbol, may carry information to be transmitted on the second one FBMC MFBMC symbols at least one symbol FBMC.
  • S210 determining whether i is less than or equal to N.
  • the distribution of OFDM symbols and FBMC symbols in a subframe may be configured in advance by a network side device. If it is determined that the symbol i is an OFDM symbol, the transmitting end performs S230 and S270; if it is determined that the symbol i is an FBMC symbol, the transmitting end determines whether i is less than N, and if i ⁇ N, executes S240; Then, the transmitting end executes S260 and S270.
  • the transmitting end performs S250 and S270; otherwise, the symbol i+1 is an OFDM symbol, and the transmitting end executes S260 and S270.
  • FBMC modulates the symbol i and the information carried on the buffered at least one FBMC symbol.
  • the sender returns to S210, and repeats the above process until it is determined that the examples in FIG. 3 to FIG. 5 are intended to help those skilled in the art to better understand the embodiment of the present invention, rather than The scope of the embodiments of the invention is limited. A person skilled in the art will be able to make various modifications or changes in the embodiments according to the examples of FIG. 3 to FIG. 5, and such modifications or variations are also within the scope of the embodiments of the present invention.
  • the method for transmitting information according to the embodiment of the present invention is such that when the time-frequency resource mapping is performed, the symbol occupied by the first to-be-sent information is located in front of the symbol occupied by the second to-be-sent information, and the first to-be-sent information is sent.
  • Performing OFDM modulation performing FBMC modulation on the second to-be-transmitted information, where the first to-be-sent information includes at least one of pilot and bottom layer control information, and further, the first modulation information obtained by the modulation and Inserting a guard interval between the second modulation information to prevent interference between the first modulation information and the second modulation information, and sequentially transmitting the first modulation information, the guard interval, and the second modulation information to the receiving end, Avoid interference between the pilot and other information, thereby improving the accuracy of channel estimation based on the pilot.
  • FIG. 6 is a schematic flow chart of a method 300 for transmitting information according to another embodiment of the present invention, which may be performed by a receiving end, for example, a UE, but the embodiment of the present invention is not limited thereto.
  • S310 Receive a data stream on a downlink transmission channel, where the data stream includes first modulation information, a guard interval, and second modulation information, where the guard interval is used to prevent the first modulation information and the second modulation information. Interference.
  • the receiving end sequentially receives the first modulation information, the guard interval, and the second modulation information in the data stream, where the first modulation information is modulated by the OFDM technology, and the first modulation information is used.
  • the CP may be included; the second modulation information is modulated by the transmitting end using FBMC technology.
  • the receiving end can determine the first modulation information and the second modulation information in a plurality of manners.
  • the receiving end may know the distribution of the OFDM symbol and the FBMC symbol in the subframe in advance.
  • the transmitting end may send indication information to the receiving end, indicating the configuration of the OFDM symbol and the FBMC symbol in the subframe.
  • the receiving end can learn, according to the indication information, which information in the received data stream is modulated by the OFDM technology, and which information is modulated by the FBMC technology; or, the OFDM symbol and the FBMC symbol are distributed in the subframe.
  • the system is pre-configured, but the embodiment of the present invention is not limited thereto.
  • the guard interval is used to prevent inter-symbol interference between the first modulation information and the second modulation information.
  • the length of the guard interval may be greater than or equal to a maximum multipath delay of the system, where the guard interval may be
  • the method includes a plurality of serial data points, and the plurality of serial data points may be arbitrarily set.
  • the plurality of serial data points are a plurality of data points in the second modulation information, but the embodiment of the present invention does not limit this. .
  • the second received information includes at least one of the following: user data, system information, and high layer control information.
  • the receiving end may perform de-CP operation and FFT operation on the first modulation information to perform demodulation, and may demodulate the second modulation information by using the AFB.
  • the first receiving information and the second receiving information obtained by the receiving end respectively correspond to the first to-be-sent information and the second to-be-sent information in the method 100. For brevity, details are not described herein again.
  • S330 Determine, according to the pilot included in the first receiving information, that the first receiving information is occupied. Channel information of the first time-frequency region.
  • the first received information may be mapped to the first time-frequency region, and the second received information is mapped to the second time-frequency region, where the first time-frequency region is And the symbols included in the second time-frequency region may be located in the same subframe, and the first symbol included in the first time-frequency region may be located before the second symbol included in the second time-frequency region, but the implementation of the present invention This example is not limited.
  • the receiving end may determine the channel information of the second time-frequency region according to the channel information of the first time-frequency region in multiple manners, for example, by linear difference or extrapolation, etc., the embodiment of the present invention does not Make a limit.
  • the method for transmitting information performs FBMC modulation on the second to-be-sent information by performing OFDM modulation on the first modulation information in the received data stream, where the first to-be-sent information is to be sent.
  • the interference is generated, and the first modulation information, the guard interval, and the second modulation information are sequentially transmitted to the receiving end, so that interference between the pilot and other information can be avoided, thereby improving the accuracy of channel estimation based on the pilot.
  • the first time-frequency region does not include a frequency band located at an edge of the system band.
  • the first received information may not occupy a frequency band located at the edge of the system band, and the second received information may occupy the frequency band at the edge of the system band.
  • the first time-frequency domain may comprise at least one OFDM symbol 0FDM M OFDM symbols in the subframe
  • the second time-frequency region may comprise at least one M FBMC symbol of the subframe FBMC a FBMC symbols.
  • any symbol included in the first time-frequency region may be located before any of the symbols included in the second time-frequency region.
  • the first time-frequency region may be located before the second time-frequency region in the subframe.
  • the specific distribution refer to the example shown in FIG. 3.
  • the first time-frequency region includes a plurality of first sub-time-frequency regions
  • the second time-frequency region includes at least one second sub-time-frequency region, where the plurality of first sub-times A second sub-time between the two first sub-time-frequency regions in the frequency region by the at least one second sub-time-frequency region
  • the frequency zones are spaced apart.
  • the multiple first sub-time-frequency regions and the at least one second sub-time-frequency region may be cross-distributed in a subframe.
  • the multiple first sub-times A first sub-time-frequency region in the frequency region may be located before all second sub-time-frequency regions in the at least one second sub-time-frequency region, and the plurality of first sub-time-frequency regions and the at least one second sub-region A first sub-time-frequency region or a second sub-time-frequency region in the time-frequency region may be located after the other sub-time-frequency regions, but the embodiment of the present invention does not limit this.
  • the first receiving information further includes bottom layer control information; and correspondingly, the method 300 further includes:
  • the second received information is decoded according to the channel information of the second time-frequency region and the underlying control information obtained by decoding.
  • the method for transmitting information according to the embodiment of the present invention is such that when the time-frequency resource mapping is performed, the symbol occupied by the first to-be-sent information is located in front of the symbol occupied by the second to-be-sent information, and the first to be sent is sent.
  • the first to-be-transmitted information includes at least one of pilot and bottom layer control information
  • the first modulation information obtained by the modulation and the first Inserting a guard interval between the two modulation information to prevent interference between the first modulation information and the second modulation information and sequentially transmitting the first modulation information, the guard interval, and the second modulation information to the receiving end, which can be avoided Interference is generated between the pilot and other information, thereby improving the accuracy of channel estimation based on the pilot.
  • FIG. 7 shows a schematic block diagram of an apparatus 400 for transmitting information in accordance with an embodiment of the present invention, the apparatus 400 comprising:
  • the resource mapping unit 410 is configured to perform time-frequency resource mapping on the first to-be-sent information and the second to-be-sent information, so that the first symbol to be used in the first to-be-sent information is located in the second to-be-sent information.
  • the first to-be-sent information includes At least one of the columns: pilot and bottom control information, the second to-be-sent information comprising at least one of: user data, system information, and high-level control information;
  • the modulating unit 420 is configured to modulate the first to-be-transmitted information mapped by the resource mapping unit 410 by using an Orthogonal Frequency Division Multiplexing (OFDM) OFDM technology to obtain first modulation information, and modulate the resource by using a filter bank multi-carrier FBMC technology.
  • OFDM Orthogonal Frequency Division Multiplexing
  • the insertion unit 430 is configured to insert a guard interval between the first modulation information and the second modulation information obtained by the modulating unit 420, where the guard interval is used to prevent the first modulation information and the second modulation information from being generated.
  • the sending unit 440 is configured to sequentially send the first modulation information, the guard interval inserted by the insertion unit 430, and the second modulation information to the receiving end.
  • the apparatus for transmitting information causes the symbol occupied by the first to-be-sent information to be located in front of the symbol occupied by the second to-be-sent information when the time-frequency resource mapping is performed, and the first to be sent Performing OFDM modulation on the information, and performing FBMC modulation on the second to-be-transmitted information, where the first to-be-transmitted information includes at least one of pilot and bottom layer control information, and further, the first modulation information obtained by the modulation and the first Inserting a guard interval between the two modulation information to prevent interference between the first modulation information and the second modulation information, and sequentially transmitting the first modulation information, the guard interval, and the second modulation information to the receiving end, which can be avoided Interference is generated between the pilot and other information, thereby improving the accuracy of channel estimation based on the pilot.
  • the resource mapping unit 410 includes: a first resource mapping sub-unit, configured to perform time-frequency resource mapping on the first to-be-sent information, so that a frequency band occupied by the first to-be-sent information does not include a system frequency band The frequency band of the edge.
  • the subframe includes OFDM symbols and M 0FDM FBMC a FBMC M symbols, wherein, M 0FDM ⁇ 1, M FB MC ⁇ 1 ;
  • the resource mapping unit 410 includes:
  • a second resource mapping sub-unit configured to perform time-frequency resource mapping on the first to-be-transmitted information, so that the first to-be-sent information occupies at least one OFDM symbol in the M OTDM OFDM symbols, where the at least one OFDM symbol includes The first symbol;
  • a third resource mapping sub-unit configured to perform time-frequency resource mapping on the second to-be-sent information, so that the second to-be-sent information occupies at least one FBMC symbol in the M FBMC FBMC symbols, where the at least one FBMC symbol includes The second symbol.
  • M 0FDM> 1 a further embodiment, the M 0FDM OFDM symbols in the first OFDM symbol and second OFDM symbols separated by a one of the MFB MC symbols FBMC FBMC at least one symbol interval.
  • the OFDM symbol occupied by the underlying control information is located in front of all FBMC symbols in the MFBMC FBMC symbols.
  • the modulating unit 420 includes:
  • Determining a subunit configured to determine that the i th symbol in the subframe is an OFDM symbol or an FBMC symbol, where l ⁇ i ⁇ N, N is the number of symbols included in the subframe;
  • An OFDM modulation sub-unit configured to perform OFDM modulation on the information carried on the i-th symbol if the determining sub-unit determines that the i-th symbol is an OFDM symbol;
  • the determining subunit is further configured to determine, if the ith symbol is an FBMC symbol, that the i+1th symbol in the subframe is an FBMC symbol or an OFDM symbol;
  • a buffer subunit configured to: if the determining subunit determines that the i+1th symbol is an FBMC symbol, buffer information carried on the i th symbol;
  • the FBMC modulation subunit is configured to perform FBMC modulation on the i th symbol and the information carried on the buffered at least one FBMC symbol if the determining subunit determines that the i+1th symbol is an OFDM symbol.
  • the apparatus 400 for transmitting information according to an embodiment of the present invention may correspond to a transmitting end in a method of transmitting information according to an embodiment of the present invention, and the above-described and other operations and/or functions of respective modules in the apparatus 400 for transmitting information respectively In order to implement the corresponding processes of the respective methods in FIG. 1 to FIG. 5, for brevity, details are not described herein again.
  • the apparatus for transmitting information causes the symbol occupied by the first to-be-sent information to be located in front of the symbol occupied by the second to-be-sent information when the time-frequency resource mapping is performed, and the first to be sent Performing OFDM modulation on the information, and performing FBMC modulation on the second to-be-transmitted information, where the first to-be-transmitted information includes at least one of pilot and bottom layer control information, and further, the first modulation information obtained by the modulation and the first Inserting a guard interval between the two modulation information to prevent interference between the first modulation information and the second modulation information, and sequentially transmitting the first modulation information, the guard interval, and the second modulation information to the receiving end, which can be avoided Pilot and other Interference occurs between the information, thereby improving the accuracy of channel estimation based on the pilot.
  • FIG. 8 shows a schematic block diagram of an apparatus 500 for transmitting information according to another embodiment of the present invention, the apparatus 500 comprising:
  • the receiving unit 510 is configured to receive, on the downlink transmission channel, a data stream, where the data stream includes first modulation information, a guard interval, and second modulation information, where the guard interval is used to prevent the first modulation information and the second Interference between modulation information;
  • the demodulation unit 520 is configured to demodulate the first modulation information received by the receiving unit 510 by using an OFDM technology to obtain first receiving information, and demodulate the second modulation information by using an FBMC technology to obtain second receiving information.
  • the first received information includes a pilot
  • the second received information includes at least one of the following: user data, system information, and high layer control information;
  • a determining unit 530 configured to determine, according to the pilot included in the first receiving information obtained by the demodulating unit 520, channel information of the first time-frequency region occupied by the first receiving information, and according to the first time-frequency The channel information of the area determines channel information of the second time-frequency region occupied by the second received information.
  • the apparatus for transmitting information causes the symbol occupied by the first to-be-sent information to be located in front of the symbol occupied by the second to-be-sent information when the time-frequency resource mapping is performed, and the first to be sent Performing OFDM modulation on the information, and performing FBMC modulation on the second to-be-transmitted information, where the first to-be-transmitted information includes at least one of pilot and bottom layer control information, and further, the first modulation information obtained by the modulation and the first Inserting a guard interval between the two modulation information to prevent interference between the first modulation information and the second modulation information, and sequentially transmitting the first modulation information, the guard interval, and the second modulation information to the receiving end, which can be avoided Interference is generated between the pilot and other information, thereby improving the accuracy of channel estimation based on the pilot.
  • the first time-frequency region does not include a frequency band located at an edge of the system band.
  • the first time-frequency domain may comprise at least one OFDM symbol 0FDM M OFDM symbols in the subframe
  • the second time-frequency region may comprise at least one M FBMC symbol of the subframe FBMC a FBMC symbols.
  • any symbol included in the first time-frequency region may be located before any of the symbols included in the second time-frequency region.
  • any symbol included in the first time-frequency region may be located before any of the symbols included in the second time-frequency region.
  • the first time-frequency region may be located in the subframe before the second time-frequency region.
  • the body distribution can be referred to the example shown in FIG.
  • the first time-frequency region includes a plurality of first sub-time-frequency regions
  • the second time-frequency region includes at least one second sub-time-frequency region, where the plurality of first sub-times The two first sub-time-frequency regions in the frequency region are spaced apart by a second sub-time-frequency region of the at least one second sub-time-frequency region.
  • the multiple first sub-time-frequency regions and the at least one second sub-time-frequency region may be cross-distributed in a subframe.
  • the multiple first sub-times A first sub-time-frequency region in the frequency region may be located before all second sub-time-frequency regions in the at least one second sub-time-frequency region, and the plurality of first sub-time-frequency regions and the at least one second sub-region A first sub-time-frequency region or a second sub-time-frequency region in the time-frequency region may be located after the other sub-time-frequency regions, but the embodiment of the present invention does not limit this.
  • the first receiving information further includes bottom layer control information.
  • the apparatus 500 further includes: a decoding unit, configured to determine, according to the determining unit, the channel of the first time-frequency region. And decoding the underlying control information in the first received information, and decoding the second received information according to the channel information of the second time-frequency region and the underlying control information obtained by the decoding.
  • the apparatus 500 for transmitting information according to an embodiment of the present invention may correspond to a transmitting end in a method of transmitting information according to an embodiment of the present invention, and the above-described and other operations and/or functions of respective modules in the apparatus 500 for transmitting information respectively In order to implement the corresponding processes of the various methods in FIG. 6, for brevity, details are not described herein again.
  • the apparatus for transmitting information causes the symbol occupied by the first to-be-sent information to be located in front of the symbol occupied by the second to-be-sent information when the time-frequency resource mapping is performed, and the first to be sent Performing OFDM modulation on the information, and performing FBMC modulation on the second to-be-transmitted information, where the first to-be-transmitted information includes at least one of pilot and bottom layer control information, and further, the first modulation information obtained by the modulation and the first Inserting a guard interval between the two modulation information to prevent interference between the first modulation information and the second modulation information, and sequentially transmitting the first modulation information, the guard interval, and the second modulation information to the receiving end, which can be avoided Interference is generated between the pilot and other information, thereby improving the accuracy of channel estimation based on the pilot.
  • FIG. 9 is a schematic block diagram of an apparatus 600 for transmitting information according to an embodiment of the present invention.
  • the apparatus 600 includes: a processor 610 and a transmitter 620, where
  • the processor 610 is configured to perform time-frequency resource mapping on the first to-be-sent information and the second to-be-sent information. And the first symbol to be used in the subframe is located in front of the second symbol occupied by the second to-be-sent information in the subframe, where the first to-be-sent information includes the following At least one of: pilot and bottom control information, the second to-be-sent information comprising at least one of: user data, system information, and high-level control information;
  • Modulating the first to-be-transmitted information by using an orthogonal frequency division multiplexing (OFDM) OFDM technique to obtain first modulation information, and modulating the second to-be-transmitted information by using a filter bank multi-carrier FBMC technique to obtain second modulation information;
  • OFDM orthogonal frequency division multiplexing
  • the transmitter 620 is configured to sequentially send the first modulation information, the guard interval, and the second modulation information obtained by the processor 610 to the receiving end.
  • the apparatus for transmitting information causes the symbol occupied by the first to-be-sent information to be located in front of the symbol occupied by the second to-be-sent information when the time-frequency resource mapping is performed, and the first to be sent Performing OFDM modulation on the information, and performing FBMC modulation on the second to-be-transmitted information, where the first to-be-transmitted information includes at least one of pilot and bottom layer control information, and further, the first modulation information obtained by the modulation and the first Inserting a guard interval between the two modulation information to prevent interference between the first modulation information and the second modulation information, and sequentially transmitting the first modulation information, the guard interval, and the second modulation information to the receiving end, which can be avoided Interference is generated between the pilot and other information, thereby improving the accuracy of channel estimation based on the pilot.
  • the processor 610 may be a central processing unit (Central)
  • the processor 610 can also be other general purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), off-the-shelf programmable gate arrays (FPGAs), or other programmable logic. Devices, discrete gates or transistor logic devices, discrete hardware components, etc.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the apparatus 600 can also include a memory 630 that can include read only memory and random access memory and provide instructions and data to the processor 610.
  • a portion of memory 630 may also include non-volatile random access memory.
  • the memory 630 can also store information of the device type.
  • each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 610 or an instruction in a form of software.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented as hardware processor execution completion, or use hardware and software module groups in the processor.
  • the execution is completed.
  • the software modules can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 630.
  • the processor 610 reads the information in the memory 630 and completes the steps of the above method in combination with hardware. To avoid repetition, it will not be described in detail here.
  • the processor 610 is specifically configured to: perform time-frequency resource mapping on the first to-be-transmitted information, so that a frequency band occupied by the first to-be-sent information does not include a frequency band located at an edge of the system band.
  • the subframe includes OFDM symbols and M 0FDM FBMC a FBMC M symbols, wherein, M 0FDM ⁇ 1, M FB MC ⁇ 1 ;
  • the processor 610 is configured to perform time-frequency resource mapping on the first to-be-transmitted information, so that the first to-be-sent information occupies at least one OFDM symbol in the M 0 FDM OFDM symbols, the at least one OFDM symbol Include the first symbol; and perform time-frequency resource mapping on the second to-be-sent information, such that the second to-be-sent information occupies at least one FBMC symbol in the MFBMC FBMC symbols, the at least one FBMC symbol including the second symbol.
  • the M 0FDM OFDM symbols in OFDM symbols located prior to any one of the M symbols FBMC a FBMC FBMC any one symbol.
  • M 0FDM> 1 a further embodiment, the M 0FDM OFDM symbols in the first OFDM symbol and second OFDM symbols separated by a one of the MFB MC symbols FBMC FBMC at least one symbol interval.
  • the OFDM symbol occupied by the underlying control information is located in front of all FBMC symbols in the MFBMC FBMC symbols.
  • the processor 610 is specifically configured to:
  • the ith symbol in the subframe is an OFDM symbol or an FBMC symbol, where l ⁇ i ⁇ N, N is the number of symbols included in the subframe;
  • the ith symbol is an OFDM symbol, performing OFDM modulation on the information carried on the i th symbol;
  • the ith symbol is an FBMC symbol, determining that the i+1th symbol in the subframe is an FBMC symbol or an OFDM symbol;
  • the (i+1)th symbol is an FBMC symbol, buffering information carried on the i-th symbol; if it is determined that the (i+1)th symbol is an OFDM symbol, the i-th symbol and the cached to The information carried on one FBMC symbol is FBMC modulated.
  • the apparatus 600 for transmitting information according to an embodiment of the present invention may correspond to a transmitting end in a method of transmitting information according to an embodiment of the present invention, and the above-described and other operations and/or functions of respective modules in the apparatus 600 for transmitting information respectively In order to implement the corresponding processes of the respective methods in FIG. 1 to FIG. 5, for brevity, details are not described herein again.
  • the apparatus for transmitting information causes the symbol occupied by the first to-be-sent information to be located in front of the symbol occupied by the second to-be-sent information when the time-frequency resource mapping is performed, and the first to be sent Performing OFDM modulation on the information, and performing FBMC modulation on the second to-be-transmitted information, where the first to-be-transmitted information includes at least one of pilot and bottom layer control information, and further, the first modulation information obtained by the modulation and the first Inserting a guard interval between the two modulation information to prevent interference between the first modulation information and the second modulation information, and sequentially transmitting the first modulation information, the guard interval, and the second modulation information to the receiving end, which can be avoided Interference is generated between the pilot and other information, thereby improving the accuracy of channel estimation based on the pilot.
  • FIG. 10 is a schematic block diagram of an apparatus 700 for transmitting information according to another embodiment of the present invention.
  • the apparatus 700 includes: a receiver 710 and a processor 720, where
  • the receiver 710 is configured to receive a data stream on a downlink transmission channel, where the data stream sequentially includes first modulation information, a guard interval, and second modulation information, where the guard interval is used to prevent the first modulation information and the second Interference between modulation information;
  • the processor 720 is configured to demodulate the first modulation information received by the receiver 710 by using an OFDM technology, obtain first reception information, and demodulate the second modulation information by using an FBMC technology to obtain second reception information.
  • the first received information includes a pilot
  • the second received information includes at least one of the following: user data, system information, and upper layer control information;
  • the apparatus for transmitting information causes the symbol occupied by the first to-be-sent information to be located in front of the symbol occupied by the second to-be-sent information when the time-frequency resource mapping is performed, and the first to be sent Performing OFDM modulation on the information, and performing FBMC modulation on the second to-be-transmitted information, where the first to-be-transmitted information includes at least one of pilot and bottom layer control information, and further, the first modulation information obtained by the modulation and the first Inserting a guard interval between the two modulation information to prevent interference between the first modulation information and the second modulation information, and to the receiving end Transmitting the first modulation information, the guard interval, and the second modulation information can avoid interference between the pilot and other information, thereby improving accuracy of channel estimation based on the pilot.
  • the processor 720 may be a central processing unit (Central Processing Unit, abbreviated as "CPU"), and the processor 720 may also be other general-purpose processors, digital signal processors (DSPs).
  • DSPs digital signal processors
  • ASIC application specific integrated circuit
  • FPGA off-the-shelf programmable gate array
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the apparatus 700 can also include a memory 730 that can include read only memory and random access memory and provides instructions and data to the processor 720.
  • a portion of memory 730 may also include non-volatile random access memory.
  • the memory 730 can also store information of the device type.
  • each step of the above method may be completed by an integrated logic circuit of hardware in the processor 720 or an instruction in the form of software.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software modules can be located in random memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, etc., which are well established in the art.
  • the storage medium is located in the memory 730, and the processor 720 reads the information in the memory 730 and combines the hardware to perform the steps of the above method. To avoid repetition, it will not be described in detail here.
  • the first time-frequency region does not include a frequency band located at an edge of the system band.
  • any symbol included in the first time-frequency region may be located before any of the symbols included in the second time-frequency region.
  • the first time-frequency region may be located before the second time-frequency region in the subframe.
  • the specific distribution refer to the example shown in FIG. 3.
  • the first time-frequency region includes a plurality of first sub-time-frequency regions
  • the second time-frequency region includes at least one second sub-time-frequency region, where the plurality of first sub-times The two first sub-time-frequency regions in the frequency region are spaced apart by a second sub-time-frequency region of the at least one second sub-time-frequency region.
  • the multiple first sub-time-frequency regions and the at least one second sub-time-frequency region may be cross-distributed in a subframe.
  • the multiple first sub-times A first sub-time-frequency region in the frequency region may be located before all second sub-time-frequency regions in the at least one second sub-time-frequency region, and the plurality of first sub-time-frequency regions and the at least one second sub-region Time A first sub-time-frequency region or a second sub-time-frequency region in the frequency region may be located after the other sub-time-frequency regions, but the embodiment of the present invention does not limit this.
  • the first receiving information further includes the bottom layer control information.
  • the processor 720 is further configured to: according to the channel information of the first time-frequency region, the first received information.
  • the bottom layer control information is decoded, and the second received information is decoded according to the channel information of the second time-frequency region and the underlying control information obtained by the decoding.
  • the apparatus 700 for transmitting information according to an embodiment of the present invention may correspond to a transmitting end in a method of transmitting information according to an embodiment of the present invention, and the above-described and other operations and/or functions of respective modules in the apparatus 700 for transmitting information respectively In order to implement the corresponding processes of the various methods in FIG. 6, for brevity, details are not described herein again.
  • the apparatus for transmitting information causes the symbol occupied by the first to-be-sent information to be located in front of the symbol occupied by the second to-be-sent information when the time-frequency resource mapping is performed, and the first to be sent Performing OFDM modulation on the information, and performing FBMC modulation on the second to-be-transmitted information, where the first to-be-transmitted information includes at least one of pilot and bottom layer control information, and further, the first modulation information obtained by the modulation and the first Inserting a guard interval between the two modulation information to prevent interference between the first modulation information and the second modulation information, and sequentially transmitting the first modulation information, the guard interval, and the second modulation information to the receiving end, which can be avoided Interference is generated between the pilot and other information, thereby improving the accuracy of channel estimation based on the pilot.
  • the term and/or merely an association describing the associated object indicates that there may be three relationships.
  • the character / in this article generally indicates that the contextual object is an OR relationship.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
  • the mutual coupling or direct connection or communication connection shown or discussed may be an indirect connection or communication connection through some interface, device or unit, or may be an electrical, mechanical or other form. connection.
  • the components displayed for the unit may or may not be physical units, ie may be located in one place, or may be distributed over multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present invention contributes in essence or to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, and the like. The medium of the code.

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

Abstract

L'invention concerne un procédé et un dispositif de transmission d'informations. Le procédé selon l'invention consiste : à mettre en oeuvre un mappage de ressources temporelles-fréquentielles sur des premières informations à envoyer et des deuxièmes informations à envoyer, de sorte qu'un premier symbole occupé par les premières informations à envoyer dans une sous-trame soit situé devant un deuxième symbole occupé par les deuxièmes informations à envoyer dans la sous-trame; à adopter la technologie MROF pour moduler les premières informations à envoyer afin d'obtenir de premières informations modulées, et à adopter la technologie FBMC pour moduler les deuxièmes informations à envoyer afin d'obtenir des deuxièmes informations modulées; à insérer un intervalle de garde entre les premières et les deuxièmes informations modulées, l'intervalle de garde servant à empêcher la production d'interférences entre les premières et les deuxièmes informations modulées; et à envoyer successivement les premières informations modulées, l'intervalle de garde et les deuxièmes informations modulées à une extrémité de réception. Les procédé et dispositif de transmission d'informations selon l'invention permettent d'empêcher la production d'interférences entre des pilotes et d'autres informations.
PCT/CN2014/083114 2014-07-28 2014-07-28 Procédé et dispositif de transmission d'informations Ceased WO2016015190A1 (fr)

Priority Applications (1)

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PCT/CN2014/083114 WO2016015190A1 (fr) 2014-07-28 2014-07-28 Procédé et dispositif de transmission d'informations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2014/083114 WO2016015190A1 (fr) 2014-07-28 2014-07-28 Procédé et dispositif de transmission d'informations

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WO2016015190A1 true WO2016015190A1 (fr) 2016-02-04

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101984617A (zh) * 2010-11-26 2011-03-09 浙江大学 基于压缩感知技术的处理滤波器组峰均比的方法
GB2500679A (en) * 2012-03-29 2013-10-02 Renesas Mobile Corp Multicarrier channel with DFT based OFDM control/pilot signals and FB based OFDM user/payload signals
CN103825862A (zh) * 2014-03-07 2014-05-28 华中科技大学 一种基于偏移正交幅度调制的滤波器组多载波方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101984617A (zh) * 2010-11-26 2011-03-09 浙江大学 基于压缩感知技术的处理滤波器组峰均比的方法
GB2500679A (en) * 2012-03-29 2013-10-02 Renesas Mobile Corp Multicarrier channel with DFT based OFDM control/pilot signals and FB based OFDM user/payload signals
CN103825862A (zh) * 2014-03-07 2014-05-28 华中科技大学 一种基于偏移正交幅度调制的滤波器组多载波方法

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