WO2016015190A1

WO2016015190A1 - Information transmission method and device

Info

Publication number: WO2016015190A1
Application number: PCT/CN2014/083114
Authority: WO
Inventors: 徐修强; 吴艺群; 张舜卿
Original assignee: 华为技术有限公司
Priority date: 2014-07-28
Filing date: 2014-07-28
Publication date: 2016-02-04

Abstract

Disclosed are an information transmission method and device. The method comprises: implementing time-frequency resource mapping on first to-be-sent information and second to-be-sent information, so that a first symbol occupied by the first to-be-sent information in a sub-frame is located in front of a second symbol occupied by the second to-be-sent information in the sub-frame; adopting the OFDM technology to modulate the first to-be-sent information to obtain first modulated information, and adopting the FBMC technology to modulate the second to-be-sent information to obtain second modulated information; inserting a guard interval between the first modulated information and the second modulated information, the guard interval being used for preventing interference from being generated between the first modulated information and the second modulated information; and sequentially sending the first modulated information, the guard interval and the second modulated information to a receiving end. By means of the information transmission method and device disclosed by the present invention, interference is prevented from being generated between pilots and other information.

Description

Method and device for transmitting information

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 (OFDM) 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. In an OFDM 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); The receiving end performs a CP removal operation on the received user data, and performs OFDM demodulation by Fast Fourier Transform (FFT). 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. However, 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. In the FBMC system, 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. 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. In addition, the FBMC system does not need to insert the CP before transmitting the signal, so it has better spectrum utilization than the OFDM system. These advantages of the FBMC system make FBMC technology a potential alternative to OFDM technology and are known as one of the key alternative technologies for the fifth generation cellular communication system.

However, the FBMC system uses offset quadrature amplitude modulation (Offset) at the transmitting and receiving ends, respectively.

Quadrature Amplitude Modulation, OQAM) and 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. Thus, interference of the transmitted data or other subcarriers on the pilot subcarriers may result in inaccurate channel estimation based on the pilot.

In the prior art, the receiving end cancels the interference based on the impulse response between adjacent subcarriers estimated by the filter coefficients in the filter bank. However, 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. Summary of the invention

Embodiments of the present invention provide a method and apparatus for transmitting information, which can avoid interference between transmitted pilots and other information.

In a first aspect, 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.

In a first possible implementation manner, 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.

In combination with the foregoing possible implementation manner, in a second possible implementation manner, 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. At least one FBMC symbol of the M _FBMC FBMC symbols, the at least one FBMC symbol comprising the second symbol.

Possible combination of the above implementation manner, in a third possible implementation, the M _0FDM OFDM symbols in OFDM symbols located prior to any one of the M symbols _FBMC a FBMC FBMC any one symbol.

In combination with the above possible implementation manners, in a fourth possible implementation manner, Mo _FDM >l, the

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.

With reference to the foregoing possible implementation manners, in a fifth possible implementation manner, if the first to-be-sent information includes the underlying control information, the OFDM symbol occupied by the underlying control information is located in all FBMC symbols in the M _FBMC FBMC symbols. front.

In combination with the foregoing possible implementation manner, in a sixth possible implementation, 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. If 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.

In a second aspect, a method for transmitting information is provided, 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.

In a first possible implementation, the first time-frequency region does not include a frequency band located at an edge of the system band.

In combination with the foregoing possible implementation manner, in a second possible implementation manner, any symbol included in the first time-frequency domain may be located before any symbol included in the second time-frequency region.

In combination with the foregoing possible implementation manner, in a third possible implementation manner, the first time-frequency region includes multiple first sub-time-frequency regions, and 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.

In combination with the foregoing possible implementation manner, in a fourth possible implementation, the first receiving information further includes the bottom layer control information, where 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 a guard interval between the modulation information and the second modulation information, the guard interval for preventing the first modulation information and the second Interference between the information system; transmitting means for sequentially transmitting to the receiving end of the first modulation information, the insertion of the guard interval insertion unit and the second modulation information.

In a first possible implementation, 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.

In combination with the foregoing possible implementation manner, in a second possible implementation manner, 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.

In combination with the foregoing possible implementation manner, in a fourth possible implementation, Mo _FDM >1, 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.

In combination with the foregoing possible implementation manner, in a sixth possible implementation, 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 symbol, the i th The symbol and the information carried on at least one of the buffered FBMC symbols are FBMC modulated.

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. Information, and demodulate the second modulation using FBMC technology Information, 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.

In combination with the foregoing possible implementation manners, in a second possible implementation manner, in combination with the foregoing possible implementation manners, in a second possible implementation manner, 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.

In combination with the foregoing possible implementation manner, in a fourth possible implementation, 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, and 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. DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will be The drawings used in the description of the prior art are briefly introduced. It is obvious that the drawings described below are only some embodiments of the present invention, and those skilled in the art will not make any creative work. Further drawings can also be obtained from these figures.

FIG. 1 is a schematic flowchart of a method for transmitting information according to an embodiment of the present invention.

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

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without making creative labor are within the scope of the present invention.

It should be understood that the technical solutions of the embodiments of the present invention can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, and wideband code. Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) System, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, etc.

It should be understood that, in the embodiment of the present invention, a user equipment (UE) may be referred to as a terminal, a mobile station (MS), a mobile terminal (Mobile Terminal), etc., and the user equipment may be Radio Access Network (RAN) Communicating with one or more core networks, for example, the user equipment may be a mobile phone (or called a cellular phone), a computer with a mobile terminal, etc., for example, 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.

It should also be understood that, in the embodiment of the present invention, the base station may be a base station in GSM or CDMA.

(Base Transceiver Station, BTS), which may be a base station (NodeB) in WCDMA, or an evolved Node B (eNB or e-NodeB) in LTE, which is not limited by the present invention.

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.

1 is a schematic flowchart of a method 100 for transmitting information according to an 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. 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. The signaling is not limited in this embodiment of the present invention.

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.

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. The effect of Inter-Symbol Interference (ISI), but the embodiment of the present invention is not limited thereto.

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.

S130. Insert a guard interval between the first modulation information and the second modulation information, where the guard interval is used to prevent interference between the first modulation information and the second modulation information.

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. Optionally, 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. Optionally, 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.

S140. 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. In this way, 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. Correspondingly, 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.

Therefore, 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. FBMC modulation, wherein the first to-be-sent information includes at least one of a pilot and an underlying control information, and further, 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, 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 basis The pilot performs the accuracy of channel estimation.

2 is a schematic diagram showing a method of transmitting information according to an embodiment of the present invention. As shown in FIG. 2, 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.

In the embodiment of the present invention, 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. Optionally, 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.

Optionally, when the time-frequency resource mapping is performed, 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}} ;

Correspondingly, 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:

And performing 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, where the at least one OFDM symbol includes the first symbol;

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 M value _OTDM and MFBMC and the MOFDM OFDM symbols and the M _FBMC a FBMC symbol specific location in a subframe may be pre-configured or semi-statically configured, _{_{e.g., M 0FDM + M FBMC = N}} , N is a subframe The number of symbols included in the present invention, but the embodiment of the present invention is not limited thereto.

Preferably, 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.

At this time, the first to-be-sent information may occupy part or all of the OFDM symbols in the Mo _FDM OFDM symbols, and the second to-be-sent information may occupy some or all of the FBMC symbols in the MFBMC FBMC symbols, and 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.

As an alternative embodiment, any one of the Mo _FDM OFDM symbols is located before any of the M _FBMC FBMC symbols.

Thus, in the subframe, 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. As shown in FIG. 3, 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.

At this time, after the transmitting end modulates the first to-be-sent information, the first modulation information is obtained, and the transmitting end modulates the second to-be-sent information to obtain second modulation information, and the first modulation information is still Located before the second modulation information, the embodiment of the present invention is not limited thereto.

Alternatively, as the embodiment, 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, and 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. In the subframe, 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.

Optionally, as another embodiment, if the first to-be-sent information includes the underlying control information, 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.

As shown in FIG. 4, 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,

M ₂ = M _0FDM . In addition, the subframe further includes two FBMC symbol sets, that is, a first FBMC symbol set and a second FBMC symbol set, where the first FBMC symbol set includes M ₃ adjacent FBMC symbols, and the second FBMC symbol set Includes M ₄ adjacent FBMC symbols, M ₃ + M4 = M _FBMC . 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.

At this time, when performing time-frequency resource mapping, 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.

After the transmitting end modulates the information carried on the symbols in the first OFDM symbol set, 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.

Optionally, as another embodiment, 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:

Determining that 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;

If the ith symbol is an OFDM symbol, performing OFDM modulation on the information carried on the i th symbol;

If the ith symbol is an FBMC symbol, determining that the i+1th symbol in the subframe is an FBMC symbol or an 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 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. Whether it is still an FBMC symbol, if the next symbol is still an FBMC symbol, 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. As shown in FIG. 5, 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 transmitting end performs the modulation operation on the symbol i, and in the initial state, i=l. If i N, the sender performs S220, otherwise, the modulation process of the method 200 ends.

S220. Determine that symbol i is an OFDM symbol or an FBMC symbol.

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.

S230, performing OFDM modulation on the information carried on the symbol i.

S240. Determine that the symbol i+1 is an OFDM symbol or an FBMC symbol.

If the symbol i+1 is an FBMC symbol, the transmitting end performs S250 and S270; otherwise, the symbol i+1 is an OFDM symbol, and the transmitting end executes S260 and S270.

S250, the information carried on the symbol i is cached.

S260, FBMC modulates the symbol i and the information carried on the buffered at least one FBMC symbol.

S270, performing an i=i+l operation.

For the updated symbol i, 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.

Therefore, 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.

In the above, with reference to FIG. 1 to FIG. 5, an embodiment according to the present invention is described in detail from the perspective of the transmitting end. Method of transmitting information, a method of transmitting information according to an embodiment of the present invention will be described in detail from the perspective of a receiving end with reference to FIG.

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. Optionally, the receiving end may know the distribution of the OFDM symbol and the FBMC symbol in the subframe in advance. For example, 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. Optionally, 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. For example, 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. .

S320, modulating the first modulation information by using an OFDM technology to obtain first received information, and demodulating the second modulation information by using an FBMC technology to obtain second received information, where 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.

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.

S340. Determine channel information of the second time-frequency region occupied by the second received information according to the channel information of the first time-frequency region.

When the time-frequency resource mapping is performed on the transmitting end, 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.

Therefore, the method for transmitting information according to the embodiment of the present invention 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. Include at least one of pilot and bottom layer control information, and further inserting a guard interval between the first modulation information and the second modulation information obtained by the above modulation to prevent the first modulation information and the second modulation information from being between 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.

Optionally, 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.

Optionally, as another embodiment, any symbol included in the first time-frequency region may be located before any of the symbols included in the second time-frequency region.

In this case, the first time-frequency region may be located before the second time-frequency region in the subframe. For the specific distribution, refer to the example shown in FIG. 3.

Optionally, in another embodiment, the first time-frequency region includes a plurality of first sub-time-frequency regions, and 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.

In this case, the multiple first sub-time-frequency regions and the at least one second sub-time-frequency region may be cross-distributed in a subframe. For the specific distribution, refer to the example shown in FIG. 4, where 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.

Optionally, in another embodiment, the first receiving information further includes bottom layer control information; and correspondingly, the method 300 further includes:

Decoding the underlying control information in the first received information according to the channel information of the first time-frequency region;

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.

Therefore, 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. 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.

It should be understood that the size of the sequence numbers of the above processes does not imply a sequence of executions, and the order of execution of the processes should be determined by its function and internal logic, and should not be construed as limiting the implementation process of the embodiments of the present invention.

The method of transmitting information according to an embodiment of the present invention is described in detail above with reference to Figs. 1 through 6, and an apparatus for transmitting information according to an embodiment of the present invention will be described below with reference to Figs.

Figure 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. In front of the second symbol occupied by the subframe, where 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. The second to-be-sent information mapped by the mapping unit 410 obtains second modulation information;

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. Interference

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.

Therefore, the apparatus for transmitting information according to the embodiment of the present invention 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.

Optionally, 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.

Alternatively, as another embodiment, the subframe includes OFDM symbols and M _0FDM _FBMC a FBMC M symbols, _{_{wherein, M 0FDM ≥1, M FB MC≥1}} ;

Correspondingly, 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. Alternatively, in another embodiment, the M _0FDM OFDM symbols in OFDM symbols located prior to any one of the M symbols _FBMC a FBMC FBMC any one symbol.

Optionally, as another embodiment, 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.

Therefore, the apparatus for transmitting information according to the embodiment of the present invention 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, and 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.

In this case, 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.

Optionally, in another embodiment, the first time-frequency region includes a plurality of first sub-time-frequency regions, and 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.

Optionally, in another embodiment, the first receiving information further includes bottom layer control information. Correspondingly, 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.

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;

Inserting a guard interval between the first modulation information and the second modulation information, the guard interval being used to prevent interference between the first modulation information and the second modulation information;

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.

It should be understood that in the embodiment of the present invention, the processor 610 may be a central processing unit (Central)

Processing Unit (referred to as "CPU"), 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.

Optionally, 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. For example, the memory 630 can also store information of the device type.

In the implementation process, 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.

Optionally, 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.

Correspondingly, 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.

Alternatively, in another embodiment, the M _0FDM OFDM symbols in OFDM symbols located prior to any one of the M symbols _FBMC a FBMC FBMC any one symbol.

Optionally, in another embodiment, the processor 610 is specifically configured to:

If it is determined that the ith symbol is an OFDM symbol, performing OFDM modulation on the information carried on the i th symbol;

If it is determined that the ith symbol is an FBMC symbol, determining that the i+1th symbol in the subframe is an FBMC symbol or an OFDM symbol;

If it is determined that 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.

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, and the second received information includes at least one of the following: user data, system information, and upper layer control information;

Determining, according to the pilot included in the first received information, channel information of the first time-frequency region occupied by the first received information, and determining, according to channel information of the first time-frequency region, that the second received information is occupied Channel information of the second time-frequency region.

Therefore, the apparatus for transmitting information according to the embodiment of the present invention 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.

It should be understood that, in the embodiment of the present invention, 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). An application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, and the like. 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. For example, the memory 730 can also store information of the device type.

In the implementation process, 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.

In this case, the multiple first sub-time-frequency regions and the at least one second sub-time-frequency region may be cross-distributed in a subframe. For the specific distribution, refer to the example shown in FIG. 4, where 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.

Optionally, in another embodiment, the first receiving information further includes the bottom layer control information. Correspondingly, 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.

It should be understood that in the embodiments of the present invention, the term and/or merely an association describing the associated object indicates that there may be three relationships. For example, A and / or can mean: There are three cases of A, and there are both B and B alone. In addition, the character / in this article generally indicates that the contextual object is an OR relationship.

Those skilled in the art will appreciate that the various method steps and elements described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both, in order to clearly illustrate hardware and software. Interchangeability, the steps and composition of the various embodiments have been generally described in terms of function in the foregoing description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. Different methods may be used to implement the described functionality for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

It will be apparent to those skilled in the art that for the convenience and brevity of the description, the specific working processes of the systems, devices and units described above may be referred to the pairs in the foregoing method embodiments. The process should not be repeated here.

In the several embodiments provided herein, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, 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. In addition, 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.

In addition, 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. Based on such understanding, 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.

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any equivalent person can be easily conceived within the technical scope of the present invention. Modifications or substitutions are intended to be included within the scope of the invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims

Rights request

A method for transmitting information, comprising:

Performing time-frequency resource mapping on the first to-be-sent information and the second to-be-sent information, so that the first symbol occupied by the first to-be-sent information in the subframe is located in the second to-be-sent information in the subframe Before the second symbol is occupied, the first to-be-sent information includes at least one of: a pilot and an underlying control information, where the second to-be-sent information includes at least one of the following: 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-sent information by using a filter bank multi-carrier FBMC technique to obtain second modulation information;

And inserting a guard interval between the first modulation information and the second modulation information, where the guard interval is used to prevent interference between the first 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.

The method according to claim 1, wherein the 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, such 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.

3. The method of claim 1 or claim 2, wherein the subframe includes OFDM symbols and M _0FDM MFBMC a FBMC symbols, _{_{wherein, Mo FDM ≥l, M FBMC ≥1}} ;

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:

Performing 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, where the at least one OFDM symbol includes the first symbol ;

Performing 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, and the at least one FBMC symbol includes the second symbol.

The method according to claim 3, wherein any one of the OFDM symbols of the _MOTDM OFDM symbols is located in any one of the M _FBMC FBMC symbols. prior to.

5. The method according to claim 3, wherein, M _0FDM> 1, M _0FDM the OFDM symbols in the first OFDM symbol and second OFDM symbol by the symbol M _FBMC th least one FBMC The FBMC symbols are spaced apart.

The method according to claim 5, wherein, if the first to-be-sent information includes the underlying control information, the OFDM symbols occupied by the underlying control information are located in all FBMC symbols of the M _FBMC FBMC symbols. The front.

The method according to claim 5 or 6, wherein the OFDM orthogonal OFDM technology modulates the first to-be-sent information, obtains first modulation information, and uses a filter bank. The multi-carrier FBMC technology modulates the second to-be-transmitted 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 in the subframe The number of symbols included;

And if the ith symbol is an OFDM symbol, perform OFDM modulation on information carried on the ith symbol;

If the first symbol is an FBMC symbol, determining that the 1+1th symbol in the subframe is

FBMC symbol or OFDM symbol;

If the 1+1th symbol is an FBMC symbol, buffering information carried on the first symbol; if the (i+1)th symbol is an OFDM symbol, the ith symbol and the cached at least The information carried on one FBMC symbol is FBMC modulated.

8. A method of transmitting information, comprising:

Receiving a data stream on the downlink transport channel, 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 modulation information Interference between them;

Demodulating the first modulation information by using an OFDM technology to obtain first received information, and demodulating the second modulation information by using an FBMC technology to obtain second received information, where the first received information includes a pilot. The second receiving information includes at least one of the following: user data, system information, and high layer control 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;

And determining channel information of the second time-frequency region occupied by the second received information according to the channel information of the first time-frequency region.

9. The method of claim 8, wherein the first time-frequency region does not include a frequency band at an edge of a system band.

The method according to claim 8 or 9, wherein any of the symbols included in the first time-frequency region may be located before any of the symbols included in the second time-frequency region.

The method according to claim 8 or 9, wherein the first time-frequency region includes a plurality of first sub-time-frequency regions, and the second time-frequency region includes at least one second sub-time-frequency region. And a region between the two first sub-time-frequency regions of the plurality of first sub-time-frequency regions is separated by a second sub-time-frequency region of the at least one second sub-time-frequency region.

The method according to any one of claims 8 to 11, wherein the first receiving information further comprises bottom layer control information;

The method further includes:

Decoding bottom layer control information in the first received information according to channel information in the first time-frequency region;

And decoding the second received information according to channel information of the second time-frequency region and bottom layer control information obtained by decoding.

13. An apparatus for transmitting information, comprising:

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 symbol occupied by the first to-be-sent information in the subframe is located in the second to-be-sent information In front of the second symbol occupied by the subframe, where the first to-be-sent information includes at least one of: a pilot and an underlying control information, where the second to-be-sent information includes at least one of Species: user data, system information, and high-level control information;

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) OFDM technology, obtain first modulation information, and modulate the signal by using a filter bank multi-carrier FBMC technology The second to-be-sent information mapped by the resource mapping unit obtains second modulation information;

An insertion unit, configured to insert a guard interval between the first modulation information and the second modulation information obtained by the modulation unit, the guard interval being used to prevent the first modulation information and the second modulation Interference between information;

And a sending unit, configured to sequentially send the first modulation information, the guard interval inserted by the insertion unit, and the second modulation information to a receiving end.

14. The apparatus according to claim 13, wherein the resource mapping unit package Includes:

And 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 frequency band located at an edge of the system band.

The apparatus according to claim 13 or 14, wherein the subframe comprises a MOT _DM OFDM symbol and an MFBMC FBMC symbol, where M _OTDM ≥ 1, M _FBMC ≥ 1; include:

a second resource mapping sub-unit, configured to perform time-frequency resource mapping on the first to-be-sent information, so that the first to-be-sent information occupies at least one OFDM symbol in the Mo _FDM OFDM symbols, where the at least one 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 One FBMC symbol includes the second symbol.

16. The apparatus according to claim 15, wherein any one of the M _OTDM OFDM symbols is located before any of the MFBMC FBMC symbols.

The apparatus according to claim 15, wherein M _OTDM >1, the first OFDM symbol and the second OFDM symbol in the M _OTDM OFDM symbols are at least one of the M _FBMC FBMC symbols The FBMC symbols are spaced apart.

The device according to claim 17, wherein, if the first to-be-sent information includes the underlying control information, the OFDM symbols occupied by the underlying control information are located in all FBMC symbols of the M _FBMC FBMC symbols. The front.

19. The apparatus according to claim 17 or 18, wherein the modulating unit comprises:

Determining a subunit, configured to determine that 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;

An OFDM modulation subunit, configured to perform OFDM modulation on information carried on the i th symbol if the determining subunit 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;

a buffer subunit, configured to: if the determining subunit determines that the i+1th symbol is an FBMC symbol, buffer information carried on the first symbol; The FBMC modulation subunit is configured to perform FBMC modulation on the information carried on the ith symbol and the buffered at least one FBMC symbol if the determining subunit determines that the i+1th symbol is an OFDM symbol.

20. An apparatus for transmitting information, comprising:

a receiving unit, 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 Interference between the second modulation information;

a demodulation unit, configured to demodulate the first modulation information received by the receiving unit by using an OFDM technology, obtain first receiving information, and demodulate the second modulation information by using an FBMC technology to obtain a second receiving Information, where the first received information includes a pilot, and the second received information includes at least one of the following: user data, system information, and high layer control information;

a determining unit, configured to determine channel information of the first time-frequency region occupied by the first receiving information according to the pilot included in the first receiving information obtained by the demodulating unit, and according to the first The channel information of the time-frequency region determines channel information of the second time-frequency region occupied by the second received information.

21. The apparatus of claim 20, wherein the first time-frequency region does not include a frequency band at an edge of a system band.

The apparatus according to claim 20 or 21, wherein any of the symbols included in the first time-frequency domain may be located before any of the symbols included in the second time-frequency region.

The device according to claim 20 or 21, wherein the first time-frequency region includes a plurality of first sub-time-frequency regions, and the second time-frequency region includes at least one second sub-time-frequency region And a region between the two first sub-time-frequency regions of the plurality of first sub-time-frequency regions is separated by a second sub-time-frequency region of the at least one second sub-time-frequency region.

The device according to any one of claims 18 to 23, wherein the first receiving information further comprises bottom layer control information;

The device also includes:

a decoding unit, configured to decode bottom layer control information in the first received information according to channel information of the first time-frequency region determined by the determining unit, and according to the second time-frequency region The channel information and the bottom control information obtained by the decoding are used to decode the second received information.