CN108366375A - A kind of method and apparatus of shared downstream spectrum - Google Patents

A kind of method and apparatus of shared downstream spectrum Download PDF

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Publication number
CN108366375A
CN108366375A CN201710057602.4A CN201710057602A CN108366375A CN 108366375 A CN108366375 A CN 108366375A CN 201710057602 A CN201710057602 A CN 201710057602A CN 108366375 A CN108366375 A CN 108366375A
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CN
China
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target
cells
lte
frame
signal
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CN201710057602.4A
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Chinese (zh)
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王新征
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华为技术有限公司
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Priority to CN201710057602.4A priority Critical patent/CN108366375A/en
Publication of CN108366375A publication Critical patent/CN108366375A/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W16/00Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14Spectrum sharing arrangements between different networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/02Arrangements for optimising operational condition

Abstract

This application provides a kind of method and apparatus of shared downstream spectrum, belong to field of communication technology.This method includes:When the volume of transmitted data of target Long Term Evolution LTE cells is less than predetermined threshold value, base station determines unscheduled at least one non-multimedia broadcast multi-broadcasting single frequency network MBSFN sub-frame of the target LTE cells;The reference signal of the target LTE cells is mapped to the resource unit RE of LTE reference signals at least one non-MBSFN sub-frame by the base station;The data to be sent of the new wireless NR cells of target are mapped to the RE in addition to the RE of the LTE reference signals at least one non-MBSFN sub-frame by the base station;The base station sends the reference signal and the data to be sent by least one non-MBSFN sub-frame.By the application, the efficiency of LTE cell data transmissions can be made relatively high.

Description

A kind of method and apparatus of shared downstream spectrum

Technical field

This application involves field of communication technology, more particularly to a kind of method and apparatus of shared downstream spectrum.

Background technology

In 5th generation, communicated mobile technology (fifth-generation of wireless mobile Telecommunications technology, 5G) in new wireless (New Radio, NR) technology and forth generation mobile communication In technology (fourth generation of wireless mobile telecommunications technology, 4G) Long Term Evolution (Long Term Evolution, LTE) it is similar, the and technology of eating dishes without rice or wine with time-frequency structure uses Running time-frequency resource, time dimension division have different orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbol, frequency dimension is divided into different subcarriers.

In the prior art, when realizing that LTE cells share downstream spectrum with NR cells, general base station is double-standard base station, Support LTE cells and NR cell simultaneous transmission data.If the volume of transmitted data of NR cells is relatively high in certain time, and LTE The volume of transmitted data of cell is relatively low, and one or more carrier waves can be shared to the use of NR cells by LTE cells.

But carrier wave is shared to NR cells in use, the transfer resource that single shares to NR cells compares by LTE cells It is more, the transfer resource of LTE cells can be caused to lack, the efficiency so as to cause LTE cell data transmissions is relatively low.

Invention content

In order to solve problems in the prior art, an embodiment of the present invention provides a kind of methods and dress of shared downstream spectrum It sets.The technical solution is as follows:

In a first aspect, providing a kind of method of shared downstream spectrum, this method includes:

When the volume of transmitted data of target LTE cells is less than predetermined threshold value, base station determines the unscheduled of target LTE cells The reference signal of target LTE cells is mapped at least one non-MBSFN sub-frame by least one non-MBSFN sub-frame, base station The data to be sent of the new NR cells of target are mapped at least one non-MBSFN sub-frame and are removed by the RE of LTE reference signals, base station RE except the RE of LTE reference signals, base station send reference signal and data to be sent by least one non-MBSFN sub-frame.

Wherein, base station is double-standard base station, can be used for passing to the terminal of target LTE cells and the terminal of target NR cells Transmission of data, target LTE cells are identical as the coverage area of target NR cells, and have the frequency spectrum of overlapping, the reference of target LTE cells Signal refers to cell specific reference signal (Cell-specific Reference Signal, CRS).

Scheme shown in the embodiment of the present invention, base station can detect the volume of transmitted data of target LTE cells, as target LTE When the volume of transmitted data of cell is less than predetermined threshold value, base station can be by unscheduled at least one non-MBSFN of target LTE cells Sub-frames share gives target NR cells, base station to determine the reference signal of target LTE cells, then believes the reference of target LTE cells Number it is mapped to non-multimedia broadcast multi-broadcasting single frequency network (Multimedia Broadcast multicast service Single Frequency Network, MBSFN) subframe LTE reference signals resource unit (Resource Element, RE), and will The data to be sent of target NR cells, are mapped to the RE in addition to the RE of LTE reference signals.Then pass through non-MBSFN sub-frame, hair Send the data to be sent of reference signal.The terminal of target LTE cells can obtain target LTE cells from non-MBSFN sub-frame Reference signal, mesh can be obtained from non-MBSFN sub-frame by carrying out radio resource measurement and channel estimation, the terminal of target NR cells The reference signal for marking LTE cells carries out channel estimation as the reference signal of oneself, channel matrix is obtained, then from non-MBSFN The data that base station is sent are parsed in subframe.

In one possible implementation, the data to be sent of target NR cells are mapped at least one non-by base station RE in the data area of MBSFN sub-frame in addition to the RE of LTE reference signals.

Scheme shown in the embodiment of the present invention, non-MBSFN sub-frame include data area and control area, and data area can be with Data and reference signal are used for transmission, control area is only used for transmission of reference signals and control information.

The data to be sent of target NR cells can only be applicable in the data area of non-MBSFN sub-frame.

In one possible implementation, base station can be based on preset linear general formula, the reference to target LTE cells Signal carries out linear transformation, wherein preset linear general formula is unitary matrice, and the mould of element is equal.

Wherein, preset linear general formula is arranged by technical staff, and stores into base station, and preset linear general formula is the tenth of the twelve Earthly Branches Matrix, and the mould of each element is all equal, such asDeng.

The reference signal of target LTE cells is mapped to LTE reference signals by scheme shown in the embodiment of the present invention, base station After RE is upper, to the reference signal of target LTE cells, it is based on preset linear general formula, carries out linear transformation, the ginseng after linear transformation Examine signal, the reference signal that as base station is sent.

In one possible implementation, base station can be based on preset linear general formula, to the non-of target LTE cells The data and reference signal to be sent mapped in MBSFN sub-frame carry out linear transformation.

Scheme shown in the embodiment of the present invention, since the reference signal sent by least one non-MBSFN sub-frame is line Property transformation after reference signal, the reference signal that the terminals of target LTE cells receives is that the reference signal of linear transformation occurs, The terminal of target LTE cells uses the reference signal after linear transformation to carry out channel estimation and radio resource measurement, obtains in this way Channel matrix be no longer original H, but be multiplied by linear general formula P, become H*P, in order to enable the terminal of target LTE cells to solve Data are analysed, base station is based on preset linear general formula, to the data to be sent mapped in the non-MBSFN sub-frame of target LTE cells And reference signal, carry out linear transformation.Since P is unitary matrice, so H, as the statistical property of H*P, H*P is the equivalent letter of H Road matrix, so, the terminal of target LTE cells can be resolved to data using H*P.

Scheme shown in the embodiment of the present invention, base station determine the reference signal of target NR cells, by the ginseng of target NR cells Signal is examined, the RE of NR reference signals at least one non-MBSFN sub-frame is mapped to;Base station is by the number to be sent of target NR cells According to being mapped to the RE in addition to the RE of LTE reference signals and NR reference signals at least one non-MBSFN sub-frame.

In one possible implementation, in non-MBSFN sub-frame, the reference letter of target NR cells can also be sent Number, although the expense of reference signal in this way becomes larger, with third-generation technology specification (The 3rd Generation Partnership Project, 3GPP) development, the cell of target NR is possible to dispatch smaller time slot transmission data, such as 4 A symbol etc., in the mini timeslot of scheduling, it is necessary to be mapped with reference signal, estimate for the terminal progress channel of target NR cells Meter, thus in non-MBSFN sub-frame mapping objects NR cells reference signal.Correspondingly, the data to be sent of target NR cells, It is mapped to the RE in addition to the RE of LTE reference signals and NR reference signals at least one non-MBSFN sub-frame.

Scheme shown in the embodiment of the present invention, target NR cells are identical as the interval of subcarrier of target LTE cells, OFDM The length of symbol is identical.

Scheme shown in the embodiment of the present invention, base station use the emission mode of transmitting diversity, pass through at least one non-MBSFN Subframe sends reference signal and data to be sent.

In one possible implementation, the emission mode of transmitting diversity refers to identical in the transmission of different antennae port Reference signal and data to be sent, in this way, even if the terminal of target NR cells is not received and sent on first antenna port Reference signal and data to be sent can also receive the reference signal sent on second antenna port and data to be sent, can Terminal to improve target NR cells receives the success rate of data.

In at least one non-MBSFN sub-frame, any terminal is corresponded in target NR cells for scheme shown in the embodiment of the present invention The centre frequency of the corresponding subcarriers of whole RE that is mapped to of data to be sent be more than or less than the direct current DC of target LTE cells The centre frequency of subcarrier.

Wherein, direct current (Direct Current, DC) subcarrier is the subcarrier at carrier center position, it is impossible to be used in is passed Defeated reference signal and data.

In one possible implementation, since the reference signal of target NR cells is typically all to wait subcarrier spacings , if having DC subcarriers, target among whole RE that the data to be sent for corresponding to any terminal in NR cells are mapped to The interval of the reference signal of NR cells will increase a subcarrier, and base station is needed to send control information, notice target NR cells The interval of terminal references signal has changed, in this way, if the data to be sent for corresponding to any terminal in target NR cells are mapped to Whole RE do not span across DC subcarriers, then base station need not send control information, the terminal references letter of notice target NR cells Number interval have changed.So as to save transfer resource.

Scheme shown in the embodiment of the present invention, the DC subcarriers of target LTE cells and the DC subcarriers of target NR cells are not Overlapping;The centre frequency of the corresponding subcarrier of reference signal of target LTE cells is not equal to the DC subcarriers of target NR cells Centre frequency.

In one possible implementation, the Physical Cell Identifier of target LTE cells is arranged when establishing in base station (Physical Cell Identifier, PCI), prevents the reference signal of target LTE cells from being mapped to DC subcarriers, so When the DC subcarriers of target LTE cells are Chong Die with the DC subcarriers of target NR cells, the reference signal of target LTE cells is affirmed It replenishes and is mapped on DC subcarriers.But if the DC subcarriers of target LTE cells and the DC subcarriers of target NR cells do not weigh It is folded, then the PCI of suitable target LTE cells when establishing, will be arranged in base station, make the reference signal of target LTE cells will not It is mapped on the DC subcarriers of target NR cells, even if the centre frequency of the corresponding subcarrier of reference signal of target LTE cells Not equal to the centre frequency of the DC subcarriers of target NR cells.

The antenna port of scheme shown in the embodiment of the present invention, target LTE cells is first antenna port and the second antenna The antenna port of port, target NR cells is first antenna port, the second antenna port, third antenna port and the 4th antenna end Mouthful;For first antenna port and the second antenna port, the reference signal of target LTE cells is mapped at least one by base station The RE of LTE reference signals in non-MBSFN sub-frame;For third antenna port and the 4th antenna port, base station determines that target NR is small The reference signal of target NR cells is mapped to NR reference signals at least one non-MBSFN sub-frame by the reference signal in area RE;For first antenna port and the second antenna port, base station by the data to be sent of the new wireless NR cells of target, be mapped to RE in a few non-MBSFN sub-frame in addition to the RE of LTE reference signals, for third antenna port and the 4th antenna port, The data to be sent of target NR cells are mapped at least one non-MBSFN sub-frame in addition to the RE of NR reference signals by base station RE.

In one possible implementation, target LTE cells correspond to two antenna ports, and target NR cells correspond to four When antenna port, for first antenna port and the second antenna port, the reference signal of target LTE cells can be reflected in base station It is mapped to the RE of LTE reference signals at least one non-MBSFN sub-frame, for third antenna port and the 4th antenna port, base station The reference signal of target NR cells can be mapped to the RE of NR reference signals at least one non-MBSFN sub-frame, due to third The reference signal and data that antenna port and the 4th antenna port are sent, the only terminal of target NR cells can receive, institute It can arbitrarily be selected with the RE of NR reference signals, and the value of the reference signal of target NR cells can also be arbitrarily arranged, but The terminal progress channel estimation of target NR cells will be made by being the reference signal of target NR cells.

Correspondingly, for first antenna port and the second antenna port, base station is to be sent by the new wireless NR cells of target Data are mapped to the RE in addition to the RE of LTE reference signals at least one non-MBSFN sub-frame, for third antenna port with The data to be sent of target NR cells are mapped at least one non-MBSFN sub-frame except NR is referred to by the 4th antenna port, base station RE except the RE of signal.

Scheme shown in the embodiment of the present invention, base station are that the terminal of target NR cells continuously dispatches multiple non-MBSFN sub-frames, The terminal of target NR cells is when carrying out channel estimation, it is assumed that channel is kept not in the length of preset number OFDM symbol Become, such as continuous two non-MBSFN sub-frames of scheduling, continuous 4 OFDM symbols are divided into one group, first OFDM symbol and the 4th There is reference signal on the RE of OFDM symbol, then can use the reference on the RE of first OFDM symbol and the 4th OFDM symbol Signal determines the reference signal of first OFDM symbol and the 4th OFDM symbol, then carries out channel estimation, can such as incite somebody to action The value of reference signal in one group of OFDM symbol on the RE of first OFDM symbol and the 4th OFDM symbol, averages, As the reference signal of channel where second OFDM symbol and third OFDM symbol difference.

Second aspect provides a kind of base station, and the base station includes processor and transmitter, and the processor passes through execution Instruct the method to realize shared downstream spectrum that above-mentioned first aspect is provided.

The third aspect provides a kind of device of shared downstream spectrum, which includes at least one module, this at least one The method for the shared downstream spectrum that a module is provided for realizing above-mentioned first aspect.

Fourth aspect provides a kind of computer program product including instruction, when it runs on base station so that base It stands the method for executing the shared downstream spectrum that above-mentioned first aspect is provided.

The advantageous effect that technical solution provided in an embodiment of the present invention is brought is:

In the embodiment of the present invention, base station can detect the volume of transmitted data of target LTE cells, when the number of target LTE cells When being less than predetermined threshold value according to transmission quantity, base station can determine unscheduled at least one non-MBSFN sub-frame of target LTE cells, The reference signal of target LTE cells is mapped to the resource unit of LTE reference signals at least one non-MBSFN sub-frame by base station RE, and by the data to be sent of target NR cells, it is mapped to the RE that LTE reference signals are removed at least one non-MBSFN sub-frame Except RE, then base station pass through at least one non-MBSFN sub-frame, send reference signal and data to be sent.In this way, base station can It is used so that the unscheduled non-MBSFN sub-frame of target LTE cells is shared to target NR cells, and then to share to target NR small for single The transfer resource in area is fewer, and the transfer resource of target LTE cells will not be made to lack, to target LTE cell data transmissions Efficiency is relatively high.

Description of the drawings

Fig. 1 is a kind of structural schematic diagram of the system of shared downstream spectrum provided in an embodiment of the present invention;

Fig. 2 is a kind of structural schematic diagram of base station provided in an embodiment of the present invention;

Fig. 3 is a kind of flow diagram of shared downstream spectrum provided in an embodiment of the present invention;

Fig. 4 is a kind of schematic diagram of reference signal sending target NR cells provided in an embodiment of the present invention;

Fig. 5 is a kind of schematic diagram of the variation of linear transformation RELATED APPLICATIONS signal provided in an embodiment of the present invention;

Fig. 6 is a kind of schematic diagram provided in an embodiment of the present invention;

Fig. 7 (a) is that a kind of carrier wave of target LTE cells provided in an embodiment of the present invention is carried with direct current of target NR cells The misaligned schematic diagram of wave;

Fig. 7 (b) is the shared frequency spectrum of the carrier wave and target NR cells of a kind of target LTE cells provided in an embodiment of the present invention In do not include the schematic diagram of direct current subcarrier;

Fig. 8 is the schematic diagram provided in an embodiment of the present invention that channel estimation is carried out using one group of reference signal;

Fig. 9 is a kind of structural schematic diagram of the device of shared downstream spectrum provided in an embodiment of the present invention;

Figure 10 is a kind of structural schematic diagram of the device of shared downstream spectrum provided in an embodiment of the present invention.

Specific implementation mode

To keep the purpose, technical scheme and advantage of the application clearer, below in conjunction with attached drawing to embodiment party of the present invention Formula is described in further detail.

For the ease of the understanding to the embodiment of the present invention, introduce first below the present embodiments relate to system architecture, And the concept of involved noun.

The embodiment of the present invention can be adapted for communication system, as shown in Figure 1, communication system includes base station and terminal, eventually End is the user equipment communicated with base station, including 4G terminals and 5G terminals, corresponds to target LTE cells in the embodiment of the present invention Terminal and target NR cells terminal, base station be double-standard base station, one is LTE, another kind is NR, and LTE is used with NR Portions of the spectrum overlapping or all overlapping.Base station includes at least one LTE cells and at least one NR cells, the number of LTE cells Mesh is identical as the number of NR cells.

Target LTE cells:Any one LTE cell that base station includes, for example, base station includes 5 cells, target LTE is small Area is wherein any one LTE cell.

Target NR cells:It is and identical as the coverage area of target LTE cells with target LTE cell cobasis station.

Target NR cells and the subcarrier of target LTE cells meet the following conditions with OFDM symbol:

Target NR cells are equal with the interval of subcarrier of target LTE cells, such as the interval of subcarrier is all 15KHZ. The equal length of target NR cells and the OFDM symbol of the subcarrier of target LTE cells, if the length of OFDM symbol is all seven points One of millisecond etc..

In addition, cyclic prefix (Cyclic Prefix, CP) length of target NR cells and the subcarrier of target LTE cells Equal, cyclic prefix refers to OFDM symbol before entering channel, the prefix of addition, for filling protection interval.

An embodiment of the present invention provides a kind of methods of shared downstream spectrum, and the executive agent of this method is base station.Such as Fig. 2 Shown, base station may include receiver 210, processor 220 and transmitter 230.Receiver 210, transmitter 230 can respectively with Processor 220 connects, and receiver 210 can be used for receiving message or data, and transmitter 230 can be used for sending message or number According to processor 220 can be the control centre of base station, using the various pieces of various interfaces and the entire base station of connection, such as Receiver 210, transmitter 230 etc..In embodiments of the present invention, processor 220 can be used for LTE cells and the shared frequency of NR cells The relevant treatment of spectrum, optionally, processor 220 may include one or more processing units.

As shown in figure 3, an embodiment of the present invention provides a kind of method of shared downstream spectrum, the process flow of this method can With including following step:

Step 301, when the volume of transmitted data of target LTE cells is less than predetermined threshold value, base station determines target LTE cells Unscheduled at least one non-MBSFN sub-frame.

Wherein, predetermined threshold value can be arranged by technical staff, and store into base station, such as the time-frequency of target LTE cells The utilization rate of resource is less than 30% etc..

In force, base station can continue to detect the volume of transmitted data of target LTE cells, when detecting target LTE cells Volume of transmitted data be less than predetermined threshold value when, can in the unscheduled non-MBSFN sub-frame of target LTE cells, determine at least one A non-MBSFN sub-frame, unscheduled non-MBSFN sub-frame refer to the data to be sent for the terminal for being not used for transmission objectives LTE cells Subframe.

In addition, base station can detect the volume of transmitted data of target LTE cells in one section of duration, one section of duration can be by technology Personnel are default, store into base station, such as 1 minute, 30 seconds etc., when detecting data of the target LTE cells in one section of duration When transmission quantity is less than predetermined threshold value, it can be determined at least one non-in the unscheduled non-MBSFN sub-frame of target LTE cells MBSFN sub-frame.

In addition, base station can detect the volume of transmitted data of target LTE cells and mesh in this period of time in a period of time The volume of transmitted data for marking NR cells, when the volume of transmitted data for detecting target LTE cells target LTE cells in one section of duration Less than predetermined threshold value, and when the volume of transmitted data of target NR cells is higher than predetermined threshold value, base station can not be adjusted in target LTE cells In the non-MBSFN sub-frame of degree, at least one non-MBSFN sub-frame is determined.

Step 302, the reference signal of target LTE cells is mapped to LTE at least one non-MBSFN sub-frame and joined by base station Examine the RE of signal.

In force, after base station determines the unscheduled at least one non-MBSFN sub-frame of LTE cells, it can obtain and deposit in advance The reference signal of the target LTE cells of storage and the time-frequency location of LTE reference signals, alternatively, using preset reference signal Generating algorithm generates the reference signal of target LTE cells, and using the PCI of target LTE cells, determines in non-MBSFN sub-frame The RE of LTE reference signals.Then it by the reference signal of target LTE cells, is mapped to LTE at least one non-MBSFN sub-frame and joins Examine the RE of signal.

Optionally, base station can also at least one non-MBSFN sub-frame mapping objects NR cells reference signal, accordingly Processing can be as follows:

Base station determines the reference signal of target NR cells, and the reference signal of target NR cells is mapped at least one non- The RE of NR reference signals in MBSFN sub-frame.

In force, base station can obtain the reference signal and NR reference signals of pre-stored target NR cells Time-frequency location, or be based on preset reference signal generating algorithm, generate the reference signal of target NR cells and use target The PCI of LTE cells determines the time-frequency location of NR reference signals.Then by the reference signal of target NR cells, it is mapped at least one In a non-MBSFN sub-frame on the time-frequency location RE of NR reference signals, referring herein to target NR cells reference signal value The terminal of target NR cells can be made more accurately to carry out channel estimation.For example, as shown in figure 4, " * " number in figure indicates target The value of the reference signal of NR cells.

The scheme of the reference signal of mapping objects NR cells can be applied to base station and correspond to target NR cells in time dimension Scheduling granularity be not subframe and be likely to be in the scene of smaller time slot.Discussion progress based on present 3GPP, target NR Cell is not subframe and is likely to be smaller time slot in the scheduling granularity of time dimension, such as mini timeslot, including 4 OFDM Symbol, in the mini timeslot of scheduling, it is necessary to be mapped with reference signal, channel estimation is carried out for the terminal of target NR cells.Example Such as, as shown in figure 4, the value of l indicates which OFDM symbol in resource block (Resource Block, a RB) RB in figure, The non-MBSFN sub-frame of the cell of target LTE includes two RB, and control area is the first two OFDM symbol in first RB, small-sized Time slot is 4 OFDM symbols, and the value of the reference signal of target NR cells uses " * " number to indicate, the reference letter of target LTE cells Number value use " A, B " to indicate, can be accorded with by the 2nd in first RB (since 0 count) OFDM symbol to the 5th OFDM Number data to be sent are sent to the terminals 1 of target NR cells, passes through in the 6th OFDM symbol to second RB in first RB 2 OFDM symbols send data to be sent to the terminal 2 of target NR cells, pass through the 3rd OFDM symbol in second RB to the 6th A OFDM symbol sends data to be sent to the terminal 3 of target NR cells.

Optionally, when the number of the antenna port of target LTE cells is less than the number of the antenna port of target NR cells, step Rapid 302 processing can be as follows:

The antenna port of target LTE cells is first antenna port and the second antenna port, the antenna end of target NR cells Mouth is first antenna port, the second antenna port, third antenna port and the 4th antenna port;For first antenna port and the The reference signal of target LTE cells is mapped to LTE reference signals at least one non-MBSFN sub-frame by two antenna ports, base station RE.For third antenna port and the 4th antenna port, base station determines the reference signal of target NR cells, by target NR cells Reference signal, be mapped to the RE of NR reference signals at least one non-MBSFN sub-frame.

In force, the antenna port of target LTE cells corresponds to two antenna ports, is first antenna port and second day The antenna port of line end mouth, target NR cells corresponds to four antenna ports, is first antenna port, the second antenna port, third Antenna port and the 4th antenna port.Antenna port mentioned above is logical antenna ports, first antenna port, the second antenna Port, third antenna port and the 4th antenna port correspond to different physical antennas respectively, for first antenna port and second Antenna port, base station can obtain the reference signal of pre-stored target LTE cells and the RE of LTE reference signals, or Person generates the reference signal of target LTE cells, and using the PCI of target LTE cells, really using the generating algorithm of reference signal Determine the RE of LTE reference signals, then by the reference signal of target LTE cells, is mapped to LTE at least one non-MBSFN sub-frame The RE of reference signal.

For third antenna port and the 4th antenna port, base station can obtain the reference of pre-stored target NR cells The RE of signal and NR reference signals generates the reference signal of target NR cells alternatively, using the generating algorithm of reference signal, And using target NR cells PCI, determine the RE of NR reference signals, then by the reference signal of target NR cells, be mapped to The RE of NR reference signals in a few non-MBSFN sub-frame.Herein it should be noted that the reference for the target NR cells that base station determines The value of signal and the RE of NR reference signals can make the terminal of target NR cells carry out channel estimation.

Step 303, the data to be sent of target NR cells are mapped at least one non-MBSFN sub-frame and remove LTE by base station RE except the RE of reference signal.

In force, after base station determines the data to be sent of target NR cells, transmission data can be treated, scrambled, The data to be sent of target NR cells are mapped in non-MBSFN sub-frame by the processing such as constellation mapping, layer mapping and resource impact RE in addition to the RE of LTE reference signals.

Optionally, the data to be sent of target NR cells are mapped to the data field of at least one non-MBSFN sub-frame by base station RE in domain in addition to the RE of LTE reference signals.

In force, the non-MBSFN sub-frame of target LTE cells can be divided into data area and control area, data area It can be used for transmission of reference signals and data, control area can be used for transmission of reference signals and control information.Although base station is true At least one non-MBSFN sub-frame made is the subframe of target LTE cell never calls, but the control zone in non-MBSFN sub-frame The reference signal of transmission objectives LTE cells is still wanted in domain, and the terminal for target LTE cells carries out channel estimation, radio resource Measure etc., control information is also transmitted sometimes, information is controlled in order to not influence target LTE cell transmissions, so base station is by target When the non-MBSFN sub-frame of LTE cells shares to target NR cells, control targe NR cells are not take up the control of target LTE cells Region, such base station can scramble, constellation mapping, layer map and resource impact the data to be sent of target NR cells Deng processing, the data to be sent of target NR cells are mapped in the data area of at least one non-MBSFN sub-frame except LTE joins Examine the RE except the RE of signal.

In addition, target NR cells can also use the control area at least one non-MBSFN sub-frame, such as target LTE Cell need not send control information, and the data to be sent of target NR cells can be mapped at least one subframe by base station Control area in RE in addition to the RE of LTE reference signals.In this way, the RE that target NR cells can use is more.

In addition, if target LTE cells need not send control channel, the RE that target NR cells can use is more, can To use the control area and data area of non-MBSFN sub-frame.

Optionally, when sending the reference signal of target NR cells by least one non-MBSFN sub-frame, the place of step 303 Reason can be as follows:

The data to be sent of target NR cells are mapped at least one non-MBSFN sub-frame and remove LTE reference signals by base station With the RE except the RE of NR reference signals.

In force, after base station determines the data to be sent of target NR cells, can be added to sent data It disturbs, constellation mapping, layer map and the data to be sent of target NR cells are mapped to non-MBSFN sub-frame by the processing such as resource impact In RE in addition to the RE of LTE reference signals and NR reference signals.

Optionally, in corresponding step 302, the number of the antenna port of target LTE cells is less than the antenna of target NR cells The processing of processing procedure when the number of port, step 303 can be as follows:

For first antenna port and the second antenna port, base station by the data to be sent of target NR cells, be mapped to RE in a few non-MBSFN sub-frame in addition to the RE of LTE reference signals, for third antenna port and the 4th antenna port, The data to be sent of target NR cells are mapped at least one non-MBSFN sub-frame in addition to the RE of NR reference signals by base station RE.

In force, for first antenna port and the second antenna port, base station determines the number to be sent of target NR cells According to rear, transmission data can be treated, is scrambled, the processing such as the mapping of constellation mapping, layer and resource impact, by target NR cells Data to be sent are mapped to the RE in addition to the RE of LTE reference signals in non-MBSFN sub-frame.For third antenna port and the Four antenna ports can treat transmission data after base station determines the data to be sent of target NR cells, be scrambled, constellation reflects It penetrates, the data to be sent of target NR cells are mapped in non-MBSFN sub-frame except NR joins by layer mapping and the processing such as resource impact Examine the RE except the RE of signal.

Step 304, base station sends reference signal and data to be sent by least one non-MBSFN sub-frame.

In force, base station can send reference signal and data to be sent, mesh by least one non-MBSFN sub-frame The terminal for marking LTE cells can carry out channel and estimate from the RE of LTE reference signals, reference signal is obtained in non-MBSFN sub-frame Meter, radio resource measurement etc..The terminal of target NR cells can obtain mesh from non-MBSFN sub-frame on the RE of LTE reference signals The reference signal of LTE cells is marked as the reference signal of oneself, carries out channel estimation, determines channel matrix H, and from non-MBSFN On the RE for mapping data to be sent in subframe, data to be sent are obtained, using channel matrix H, determine that base station is sent to be sent Data.In this way, the terminal of target LTE cells can carry out radio resource measurement and channel estimation, target LTE cells are not interfered with Terminal use, and target NR cells can also use the unscheduled non-MBSFN sub-frame of target LTE cells.

Optionally, the emission mode that can use transmitting diversity, sends reference signal and data to be sent, corresponding step 304 processing can be as follows:

Base station uses the emission mode of transmitting diversity, by least one non-MBSFN sub-frame, sends reference signal and pending Send data.

In force, if terminal transmission data from base station to target NR cells when, used precoding processing, then target The reference signal of LTE cells can be inserted into before precoding processing, after precoding processing, since the reference of target LTE cells is believed Number value be multiplied by pre-coding matrix, the reference signal of target LTE cells can change.So if target NR cells are thought The unscheduled non-MBSFN sub-frame of shared target LTE cells cannot carry out precoding processing to the reference signal of target LTE cells. On different RB in a subframe, target NR cells are possible to (such as be sent to different mesh using different pre-coding matrixes The pre-coding matrix of terminal for marking NR cells differs), in this way, the reference signal on the different RB of target LTE cells can use Different pre-coding matrixes causes the terminal of target LTE cells to be unable to properly receive reference signal.Herein generally using transmitting point The emission mode of collection, the emission mode of transmitting diversity refer to sending identical reference signal and number to be sent in different antennae port According to even if the terminal of target NR cells does not receive the reference signal sent on first antenna port and data to be sent The reference signal sent on second antenna port and data to be sent can be received, the success rate of data transmission can be improved.

Herein it should be noted that if target NR cells share the MBSFN sub-frame of target LTE cells, the mesh of base station Marking NR cells can use precoding processing, the data to be sent that antenna ports different in this way is sent to differ, send simultaneously Data volume it is bigger, so as to improve the efficiency of data transmission.

In the embodiment of the present invention, the scheme that linear transformation is carried out to LTE reference signals is additionally provided, corresponding processing can be with It is as follows:

Base station is based on preset linear general formula, to the reference signal of target LTE cells, carries out linear transformation, wherein default Linear general formula be unitary matrice, and the mould of element is equal.

In force, preset linear general formula is arranged by technical staff, and stores into base station, preset linear general formula For unitary matrice, and in the matrix each element mould it is all equal.When preset linear general formula is arranged, which meets Following two conditions, first, the transmission power summation of the front and back all antenna ports for participating in linear transformation of linear transformation is identical, separately Outside, if linear transformation the first two or the transmission power of mutiple antennas port are equal, participate in linear transformation latter two or The transmission power of mutiple antennas port is also equal, in this way, total transmission power of base station does not change, be not in that base station is covered The case where lid range becomes larger or becomes smaller, into without making the terminal that base station is covered not receive reference signal or data, also not It will appear reference signal or data that the terminal that other base stations are covered receives base station transmission, and the radio frequency of antenna port Specification also haves no need to change;Second, all antenna ports correspond to the transmission power phase of the RE of LTE reference signals after linear transformation Together, in this way, the terminal of the terminal and target LTE cells convenient for notice target NR cells, obtains reference signal, also improve target The terminal of NR cells carries out the accuracy of channel estimation.

Antenna port with the antenna port of target LTE cells and target NR cells is first antenna port and second day Illustrate for line end mouth, meeting the preset linear general formula of above-mentioned two condition can be:

Wherein, α, β, Δ are default real number, and j is Imaginary unit, for example, as Δ=α=β=0,When α=0,When,When α=β=0, Δ=π, when,Deng.

The reference signal of target LTE cells is mapped to LTE reference signals at least one non-MBSFN sub-frame by base station After RE, base station can use preset linear general formula, the reference of the target LTE cells of the RE to being mapped to LTE reference signals Signal carries out linear transformation, is below first day with the antenna port of the antenna port of target LTE cells and target NR cells It illustrates for line end mouth and the second antenna port, k-th of son carries in the non-MBSFN sub-frame sent by first antenna port Value before and after the reference signal Linear Transformation mapped on wave and the corresponding RE of first of OFDM symbol withWithIt indicates, leads to Cross the ginseng mapped on k-th of subcarrier and the corresponding RE of first of OFDM symbol in the non-MBSFN sub-frame of the second antenna port transmission Examine the value before and after signal Linear TransformationWithIt indicates, preset linear transformation general formula is indicated using P, and linear transformation is public Formula isFor example, WithIt can be expressed as: After carrying out linear transformation, the reference signal that base station is sent by least one non-MBSFN sub-frame, the as reference after linear transformation Signal.

For example, as shown in figure 5, target LTE cells in the non-MBSFN sub-frame sent by first antenna port The value of reference signal is R1、R2……R8, pass through the identical time-frequency location in the MBSFN sub-frame of the second antenna port transmission RE on the values of reference signal of target LTE cells be 0, in the non-MBSFN sub-frame sent by first antenna port Target LTE cells reference signal value be 0, by the second antenna port send MBSFN sub-frame on it is identical when The value of the reference signal of target LTE cells on the RE of frequency position is R9、R10……R16, preset linear general formula ForAfter linear transformation reference signal value as shown in figure 5,

As shown in Figure 5, since the RE of the same time-frequency location of the non-MBSFN sub-frame sent by two antenna ports is linear The value of the reference signal of target LTE cells after transformation is equal or opposite number each other, so first antenna end after linear transformation Mouth is identical as the corresponding transmission power of RE of LTE reference signals of the second antenna port.

It should be noted that antenna port of the above-mentioned carry out linear transformation only for transmission reference signal, for not sending ginseng Above-mentioned linear transformation need not then be done by examining the antenna port of signal, send the antenna port of reference signal herein, it can be understood as The antenna port of the CRS of target LTE cells is sent, for not sending the antenna port of reference signal, reference signal herein is CRS, it can be understood as send channel state information reference signals (the Channel State Information of target LTE cells Reference Signal, CSI-RS) antenna port.

Alternatively, above-mentioned linear transformation can also be base station carries out linear transformation to the reference signal of target LTE cells in advance, The value for storing the reference signal after linear transformation sends target NR cells in base station by unscheduled non-MBSFN sub-frame When data to be sent, the reference signal after linear transformation is mapped on the RE of LTE reference signals.

In addition, the antenna port number that target LTE cells are additionally provided in the embodiment of the present invention is 4, target NR cells In the case that the number of antenna port is 4 or is more than 4, the reference signal of target LTE cells carries out the scheme of linear transformation, accordingly Processing can be as follows:

The antenna port number of target LTE cells is 4, and the number of the antenna port of target NR cells is 4 or is more than 4, line Property general formula is unitary matrice, and in matrix each element mould it is all equal, only give a specific example of linear general formula herein, such asDeng.

Optionally, in the embodiment of the present invention, the non-MBSFN sub-frame that additionally providing does not influence not used by target NR cells passes The scheme of transmission of data, corresponding processing can be as follows:

Base station is based on preset linear general formula, to the data to be sent that are mapped in the non-MBSFN sub-frame of target LTE cells and Reference signal carries out linear transformation.

In force, reference signal and to be sent data of the base station to target LTE cells, is scrambled, constellation mapping, layer After the processing such as mapping, precoding, resource impact, the reference signal and data to be sent of target LTE cells are mapped to except at least In other subframes except one non-MBSFN sub-frame, base station can obtain preset linear general formula, be then based on the preset line Property general formula linear transformation is carried out to the reference signal and data to be sent.The processing of linear transformation herein and above-mentioned linear transformation Processing it is identical, details are not described herein again.If there is the data to be sent of target LTE cells at least one non-MBSFN sub-frame, It needs to be based on preset linear general formula, linear transformation is carried out to the data to be sent of target LTE cells.

Assuming that the channel matrix of base station to UE are denoted as H, H is the matrix of 2*2, is being not based on preset linear general formula, to ginseng When examining signal and data to be sent and carrying out linear transformation, the vector for the signal that terminal receives is indicated with r, r=Hx, wherein x is The reference signal that base station is sent,It indicatesTransposition.Based on preset linear general formula, carry out linear After transformation, the vector for the signal that terminal receives is indicated with r, r=HPx=H1, wherein P indicates preset linear general formula, H1= HP, in this way since P matrixes are unitary matrice, H and H1Statistical property having the same is the channel matrix of equivalent channel, such as from phase Pass function is identical, channel fading is mutually same, therefore, carries out the terminal reception data that linear transformation does not interfere with target LTE cells.

And linear transformation need not be carried out for the data to be sent of target NR cells, the terminals of target NR cells according to from The reference signal got in non-MBSFN sub-frame, the channel matrix being calculated are H1, as target NR cells data to be sent Channel matrix.

In addition, it is necessary to explanation, it is transmission mode 9 to be configured with transmission mode for the terminal of target LTE cells (Transmission Mode Nine, TM9), and it is configured with pre-coding matrix instruction (Precoding Matrix Indicator, PMI)/order instruction (Rank Indication, RI) the case where reporting, the letter that the terminals of target LTE cells reports Road quality instruction (Channel Quality Indicator, CQI) is the base station transmission based on being obtained to measurements of CSI-RS The antenna port that the reference signal of CSI-RS and target LTE cells uses is different, does not carry out linear transformation processing to CSI-RS, that The CQI that base station obtains is the channel quality of actual channel.TM9 is configured with for the terminal of target LTE cells, but is not configured The case where PMI/RI is reported, the CQI that the terminal of target LTE cells reports is the survey based on the reference signal to target LTE cells It measures, if base station has carried out linear transformation to the reference signal of target LTE cells, the CQI that terminal measures is anti- What is reflected is the channel quality of equivalent channel.It is configured with TM9 generally for the terminal of target LTE cells, but PMI/RI is not configured The case where reporting, using in time division duplex (Time Division Duplex, TDD) pattern, base station known equivalents channel CQI may then pass through the reciprocity of up channel and down channel, obtain the channel quality of actual channel.In this way, base station pair After the reference signal of target LTE cells carries out linear change, the use of the terminal of target LTE cells is not interfered with.

In addition, additionally provided in the embodiment of the present invention, it is not pending to being mapped in the non-MBSFN sub-frame of target LTE cells Data and reference signal are sent, linear transformation is carried out, and to the to be sent of the upper mapping for all subframes of target NR cells used Data and reference signal carry out the scheme of linear transformation, and corresponding processing can be as follows:

Base station can obtain the reference signal of pre-stored target NR cells and the RE of NR reference signals, or make With the generating algorithm of preset reference signal, the reference signal of target NR cells is generated, and using the PCI of target NR cells, really Determine the RE of NR reference signals in non-MBSFN sub-frame.Then it by the reference signal of target NR cells, is mapped at least one non- The RE of the NR reference signals of MBSFN sub-frame, and by the data to be sent of target NR cells be mapped to except NR reference signals RE it Outer RE.Then the reference signal of transmission data and target NR cells is treated, preset linear general formula Q is based on, is linearly become It changes, preset linear general formula Q is the transposition conjugation of above-mentioned linear general formula P herein, the reference signal of target NR cells It is the value of the reference signal of target LTE cells after value carries out linear transformation, then passes through at least one non-MBSFN again Frame sends the reference signal of the NR cells after linear transformation and data to be sent.In this way, the terminal of target LTE cells is got Reference signal be the reference signal that should actually receive, and the reference signal got for the terminal of target NR cells is The reference signal for carrying out the NR cells after linear transformation, so the data to be sent of NR cells will also carry out linear transformation, ability Correctly parse data to be sent.

In the embodiment of the present invention, the control letter of the time-frequency location for the reference signal for reducing instruction target NR cells is additionally provided The method of the expense of breath, corresponding processing can be as follows:

In at least one non-MBSFN sub-frame, corresponded in target NR cells any terminal data to be sent be mapped to it is complete The centre frequency of the corresponding subcarriers of portion RE is more than or less than the centre frequency of the direct current DC subcarriers of target LTE cells.

In force, as shown in fig. 6, the DC subcarriers of target LTE cells are Chong Die with the DC subcarriers of target NR cells, mesh It does not include DC subcarriers to mark in the non-MBSFN sub-frame of LTE cells, and may include DC in the non-MBSFN sub-frame of target NR cells Subcarrier.In this way, since DC subcarriers cannot be used for mapping reference signal and data to be sent, the reference letter of target LTE cells Number across after a DC subcarrier, the interval of the reference signal of the target LTE cells in frequency dimension can be made to become larger, it is such as original 3 subcarriers at the interval of the reference signal of target LTE cells, if can become 4 sons if interval across DC subcarriers and carry Wave.And the reference signal of target NR cells is typically all to be spacedly distributed, such as be spaced 3 subcarriers in frequency dimension, So when target NR cells share the reference signal of target LTE cells, target NR cells correspond to the data to be sent of any terminal Whole RE of mapping do not span across DC subcarriers generally, i.e., target NR cells correspond to any terminal data to be sent be mapped to it is complete The centre frequency of the corresponding subcarriers of portion RE all greater than or all less than target LTE cells DC subcarriers centre frequency. In this way, the terminal of target NR cells can obtain reference signal from non-MBSFN sub-frame at equal intervals, referred to without sending The instruction control information that variation occurred at intervals of signal, so as to save downlink transfer resource.

In the embodiment of the present invention, additionally provide target NR cells it is Chong Die with the target occupied portions of the spectrum of LTE cells when, To the method that the time-frequency location of the reference signal of target LTE cells is defined, corresponding processing can be as follows:

The DC subcarriers of target LTE cells and the DC subcarriers of target NR cells be not be overlapped;The reference of target LTE cells is believed Centre frequency of the centre frequency of number corresponding subcarrier not equal to the DC subcarriers of target NR cells.

In force, DC subcarriers are the subcarriers that cannot be used for transmission data being arranged at carrier center position, so When by non-MBSFN sub-frame transmission data, base station cannot will all refer to either target NR cells or target LTE cells Signal is mapped on the DC subcarriers of target NR cells, target LTE cells.Target NR cells and target LTE cells are occupied When portions of the spectrum is overlapped, two kinds of situations can be divided into, as shown in Fig. 7 (a), when a kind of situation is that portions of the spectrum is overlapped, target LTE The DC subcarriers of cell and the DC subcarriers of target NR cells be not be overlapped, then when establishing base station, target LTE cells are arranged PCI, prevent the reference signal of target LTE cells from being mapped on the DC subcarriers of target NR cells, i.e. target LTE cells Centre frequency of the centre frequency of the corresponding subcarrier of reference signal not equal to the DC subcarriers of target NR cells.It needs herein Bright, the time-frequency location of the reference signal of target LTE cells is calculated according to the PCI of target LTE cells.Such as Fig. 7 (b) shown in, when another situation is portions of the spectrum overlapping, DC that target NR cells are not included in the partial frequency spectrum of overlapping is carried Wave, in this case then without the concern for the setting of the PCI of target LTE cells.

In the embodiment of the present invention, additionally provides and continuously dispatch multiple non-MBSFN in base station for the terminal of target NR cells When frame, optimize the scheme of channel estimation, corresponding processing can be as follows:

Base station is that the terminal of target NR cells continuously dispatches multiple non-MBSFN sub-frames, and the terminal of target NR cells is carrying out When channel estimation, it is assumed that channel remains unchanged in the length of preset number OFDM symbol, as shown in figure 8, continuously dispatching two Continuous 4 OFDM symbols are divided into one group by a non-MBSFN sub-frame, and first virtual coil circle has lived 4 OFDM symbols, the dotted line Have reference signal on the RE of first OFDM symbol and the 4th OFDM symbol in circle, then can use first OFDM symbol and Reference signal on the RE of 4th OFDM symbol determines the reference letter of first OFDM symbol and the 4th OFDM symbol Number, channel estimation is then carried out, it such as can be by the RE of first OFDM symbol and the 4th OFDM symbol in one group of OFDM symbol On reference signal value, average, as second OFDM symbol and third OFDM symbol respectively where believe The reference signal in road.

In addition, for the reference signal for occurring at first and finally occurring, specially treated can be done, such as first reality in Fig. 8 Wire frame and second solid box, the reference signal occurred at first and adjacent reference signal can be formed one group of reference signal into Row channel estimation.

Herein it should be noted that A, B indicate the value of reference signal in Fig. 8.

It should be noted that the non-MBSFN sub-frame being previously mentioned in the embodiment of the present invention is the subframe of target LTE cells.

In the embodiment of the present invention, base station can detect the volume of transmitted data of target LTE cells, when the number of target LTE cells When being less than predetermined threshold value according to transmission quantity, base station can determine unscheduled at least one non-MBSFN sub-frame of target LTE cells, The reference signal of target LTE cells is mapped to the resource unit of LTE reference signals at least one non-MBSFN sub-frame by base station RE, and by the data to be sent of target NR cells, it is mapped to the RE that LTE reference signals are removed at least one non-MBSFN sub-frame Except RE, then base station pass through at least one non-MBSFN sub-frame, send reference signal and data to be sent.In this way, base station can It is used so that the unscheduled non-MBSFN sub-frame of target LTE cells is shared to target NR cells, and then to share to target NR small for single The transfer resource in area is fewer, and the transfer resource of target LTE cells will not be made to lack, to target LTE cell data transmissions Efficiency is relatively high.

Fig. 9 is the structure chart of the device of shared downstream spectrum provided in an embodiment of the present invention.The device can by software, Hardware or both is implemented in combination with as some or all of in device.Shared downstream spectrum provided in an embodiment of the present invention Device the flow described in Fig. 3 of the embodiment of the present invention may be implemented, which includes:Determining module 910,920 and of mapping block Sending module 930, wherein:

The determining module 910 is less than predetermined threshold value for the volume of transmitted data when target Long Term Evolution LTE cells When, determine unscheduled at least one non-multimedia broadcast multi-broadcasting single frequency network MBSFN sub-frame of the target LTE cells;

The mapping block 920, for by the reference signal of the target LTE cells, being mapped to described at least one non- The resource unit RE of LTE reference signals in MBSFN sub-frame;

The mapping block 920, for by the data to be sent of the new wireless NR cells of target, being mapped to described at least one RE in non-MBSFN sub-frame in addition to the RE of the LTE reference signals;

The sending module 930, for by least one non-MBSFN sub-frame, sending the reference signal and institute State data to be sent.

Optionally, the mapping block 920, is used for:

By the data to be sent of the target NR cells, it is mapped to the data area of at least one non-MBSFN sub-frame In RE in addition to the RE of the LTE reference signals.

Optionally, as shown in Figure 10, described device further includes:

Conversion module 930, for being based on preset linear general formula, to the reference signal of the target LTE cells, into line Property transformation, wherein the preset linear general formula is unitary matrice, and the mould of element is equal.

Optionally, the conversion module 930, is used for:

Based on the preset linear general formula, to the number to be sent mapped in the non-MBSFN sub-frame of the target LTE cells According to and reference signal, carry out linear transformation.

Optionally, the mapping block 920, is additionally operable to:

The reference signal for determining the target NR cells, by the reference signal of the target NR cells, be mapped to it is described extremely The RE of NR reference signals in a few non-MBSFN sub-frame;

The mapping block 920, is used for:

By the data to be sent of the target NR cells, it is mapped at least one non-MBSFN sub-frame and removes the LTE RE except the RE of reference signal and the NR reference signals.

Optionally, the target NR cells are identical as the interval of subcarrier of target LTE cells, orthogonal frequency division multiplexing The length of OFDM symbol is identical.

Optionally, the sending module 930, is used for:

Using the emission mode of transmitting diversity, by least one non-MBSFN sub-frame, send the reference signal and The data to be sent.

Optionally, at least one non-MBSFN sub-frame, the to be sent of any terminal is corresponded in the target NR cells Direct current DC that the centre frequency for the corresponding subcarriers of whole RE that data are mapped to is more than or less than the target LTE cells is carried The centre frequency of wave.

Optionally, the DC subcarriers of the target LTE cells and the DC subcarriers of the target NR cells be not be overlapped;It is described The centre frequency of the corresponding subcarrier of reference signal of target LTE cells is not equal in the DC subcarriers of the target NR cells Frequency of heart.

Optionally, the antenna port of the target LTE cells is first antenna port and the second antenna port, the target The antenna port of NR cells is the first antenna port, the second antenna port, third antenna port and the 4th antenna port;

The mapping block 920, is used for:

The reference signal of the target LTE cells is reflected in the first antenna port and second antenna port It is mapped to the RE of LTE reference signals at least one non-MBSFN sub-frame;

The mapping block 920, is additionally operable to:

For the third antenna port and the 4th antenna port, the reference signal of the target NR cells is determined, By the reference signal of the target NR cells, it is mapped to the RE of NR reference signals at least one non-MBSFN sub-frame;

The mapping block 920 is used for for the first antenna port and second antenna port, by the new nothing of target The data to be sent of line NR cells are mapped at least one non-MBSFN sub-frame in addition to the RE of the LTE reference signals RE, institute is mapped to by the data to be sent of target NR cells for the third antenna port and the 4th antenna port State the RE in addition to the RE of the NR reference signals at least one non-MBSFN sub-frame.

It should be noted that above-mentioned determining module 910, mapping block 920 and sending module 930 can be by processors 220 It realizes or processor 220 coordinates transmitter 230 to realize.

In the embodiment of the present invention, base station can detect the volume of transmitted data of target LTE cells, when the number of target LTE cells When being less than predetermined threshold value according to transmission quantity, base station can determine unscheduled at least one non-MBSFN sub-frame of target LTE cells, The reference signal of target LTE cells is mapped to the resource unit of LTE reference signals at least one non-MBSFN sub-frame by base station RE, and by the data to be sent of target NR cells, it is mapped to the RE that LTE reference signals are removed at least one non-MBSFN sub-frame Except RE, then base station pass through at least one non-MBSFN sub-frame, send reference signal and data to be sent.In this way, base station can It is used so that the unscheduled non-MBSFN sub-frame of target LTE cells is shared to target NR cells, and then to share to target NR small for single The transfer resource in area is fewer, and the transfer resource of target LTE cells will not be made to lack, to target LTE cell data transmissions Efficiency is relatively high.

In the above-described embodiments, can come wholly or partly by software, hardware, firmware or its arbitrary combination real It is existing, when implemented in software, can entirely or partly it realize in the form of a computer program product.The computer program Product includes one or more computer instructions, when being loaded on base station and executing the computer program instructions, whole or portion Ground is divided to generate according to the flow or function described in the embodiment of the present invention.The computer instruction can be stored in computer-readable deposit In storage media, or from a computer readable storage medium to the transmission of another computer readable storage medium, for example, described Computer instruction can pass through wired (such as coaxial cable, light from a web-site, computer, server or data center Fine, Digital Subscriber Line) or wireless (such as infrared, wireless, microwave etc.) mode to another web-site, computer, server Or data center is transmitted.The computer readable storage medium can be any usable medium that base station can access or It is comprising data storage devices such as one or more usable mediums integrated server, data centers.The usable medium can be with Magnetic medium (such as floppy disk, hard disk and tape), can also be optical medium (such as digital video disk (Digital Video Disk, DVD) etc.) or semiconductor medium (such as solid state disk).

The foregoing is merely one embodiment of the application, not to limit the application, it is all in spirit herein and Within principle, any modification, equivalent replacement, improvement and so on should be included within the protection domain of the application.

Claims (31)

1. a kind of method of shared downstream spectrum, which is characterized in that the method includes:
When the volume of transmitted data of target Long Term Evolution LTE cells is less than predetermined threshold value, base station determines that the target LTE is small Unscheduled at least one non-multimedia broadcast multi-broadcasting single frequency network MBSFN sub-frame in area;
The reference signal of the target LTE cells is mapped to LTE at least one non-MBSFN sub-frame and joined by the base station Examine the resource unit RE of signal;
The data to be sent of the new wireless NR cells of target are mapped at least one non-MBSFN sub-frame and are removed by the base station RE except the RE of the LTE reference signals;
The base station sends the reference signal and the data to be sent by least one non-MBSFN sub-frame.
2. according to the method described in claim 1, it is characterized in that, the base station is by the number to be sent of the new wireless NR cells of target According to, it is mapped to the RE in addition to the RE of the LTE reference signals at least one non-MBSFN sub-frame, including:
The data to be sent of the target NR cells are mapped to the data of at least one non-MBSFN sub-frame by the base station RE in region in addition to the RE of the LTE reference signals.
3. according to the method described in claim 1, it is characterized in that, the method further includes:
The base station is based on preset linear general formula, to the reference signal of the target LTE cells, carries out linear transformation, wherein The preset linear general formula is unitary matrice, and the mould of element is equal.
4. according to the method described in claim 3, it is characterized in that, the method further includes:
The base station is based on the preset linear general formula, pending to being mapped in the non-MBSFN sub-frame of the target LTE cells Data and reference signal are sent, linear transformation is carried out.
5. according to the method described in claim 1, it is characterized in that, the base station by the reference signal of the target LTE cells, It is mapped at least one non-MBSFN sub-frame after the resource unit RE of LTE reference signals, further includes:
The base station determines the reference signal of the target NR cells, by the reference signal of the target NR cells, is mapped to institute State the RE of NR reference signals at least one non-MBSFN sub-frame;
The data to be sent of the new wireless NR cells of target are mapped at least one non-MBSFN sub-frame and are removed by the base station RE except the RE of the LTE reference signals, including:
The data to be sent of the target NR cells are mapped at least one non-MBSFN sub-frame and remove institute by the base station State the RE except the RE of LTE reference signals and the NR reference signals.
6. according to the method described in claim 1, it is characterized in that, the son of the target NR cells and the target LTE cells Identical, orthogonal frequency division multiplex OFDM symbol the length in interval of carrier wave is identical.
7. according to the method described in claim 1, it is characterized in that, the base station by least one non-MBSFN sub-frame, The reference signal and the data to be sent are sent, including:
The base station uses the emission mode of transmitting diversity, by least one non-MBSFN sub-frame, sends described with reference to letter Number and the data to be sent.
8. according to the method described in claim 1, it is characterized in that, at least one non-MBSFN sub-frame, the target NR The centre frequency that the corresponding subcarriers of whole RE that the data to be sent of any terminal are mapped to are corresponded in cell is more than or less than The centre frequency of the direct current DC subcarriers of the target LTE cells.
9. according to the method described in claim 1, it is characterized in that, the DC subcarriers of the target LTE cells and the target The DC subcarriers of NR cells are not overlapped;The centre frequency of the corresponding subcarrier of reference signal of the target LTE cells is not equal to The centre frequency of the DC subcarriers of the target NR cells.
10. according to the method described in claim 1, it is characterized in that, the antenna port of the target LTE cells is first antenna Port and the second antenna port, the antenna ports of the target NR cells are the first antenna port, the second antenna port, the Triantennary port and the 4th antenna port;
The reference signal of the target LTE cells is mapped to LTE at least one non-MBSFN sub-frame and joined by the base station The resource unit RE of signal is examined, including:
For the first antenna port and second antenna port, the reference of the target LTE cells is believed in the base station Number, it is mapped to the RE of LTE reference signals at least one non-MBSFN sub-frame;
The method further includes:
For the third antenna port and the 4th antenna port, the base station determines the reference letter of the target NR cells Number, by the reference signal of the target NR cells, it is mapped to the RE of NR reference signals at least one non-MBSFN sub-frame;
The data to be sent of target NR cells are mapped at least one non-MBSFN sub-frame and remove the LTE by the base station RE except the RE of reference signal, including:
For the first antenna port and second antenna port, the base station is by the number to be sent of the target NR cells According to the RE in addition to the RE of the LTE reference signals at least one non-MBSFN sub-frame being mapped to, for the third Antenna port and the 4th antenna port, the base station by the data to be sent of the target NR cells, be mapped to it is described extremely RE in a few non-MBSFN sub-frame in addition to the RE of the NR reference signals.
11. a kind of base station, which is characterized in that the base station includes transmitter and processor, wherein:
The processor, for when the volume of transmitted data of target Long Term Evolution LTE cells is less than predetermined threshold value, determining institute State unscheduled at least one non-multimedia broadcast multi-broadcasting single frequency network MBSFN sub-frame of target LTE cells;
The processor, for by the reference signal of the target LTE cells, being mapped at least one non-MBSFN sub-frame The resource unit RE of middle LTE reference signals;
The processor, for by the data to be sent of the new wireless NR cells of target, being mapped at least one non-MBSFN RE in frame in addition to the RE of the LTE reference signals;
The transmitter, for by least one non-MBSFN sub-frame, sending the reference signal and the number to be sent According to.
12. base station according to claim 11, which is characterized in that the processor is used for:
By the data to be sent of the target NR cells, it is mapped in the data area of at least one non-MBSFN sub-frame and removes RE except the RE of the LTE reference signals.
13. base station according to claim 11, which is characterized in that the processor is additionally operable to:
Linear transformation is carried out to the reference signal of the target LTE cells based on preset linear general formula, wherein described default Linear general formula be unitary matrice, and the mould of element is equal.
14. base station according to claim 13, which is characterized in that the processor is additionally operable to:
Based on the preset linear general formula, to the data to be sent that are mapped in the non-MBSFN sub-frame of the target LTE cells and Reference signal carries out linear transformation.
15. base station according to claim 11, which is characterized in that the processor is additionally operable to:
The reference signal of the target NR cells is mapped to described at least one by the reference signal for determining the target NR cells The RE of NR reference signals in a non-MBSFN sub-frame;
The processor, is used for:
The to be sent data of the target NR cell are mapped at least one non-MBSFN sub-frame except the LTE is referred to RE except signal and the RE of the NR reference signals.
16. base station according to claim 11, which is characterized in that the target NR cells and the target LTE cells Identical, orthogonal frequency division multiplex OFDM symbol the length in interval of subcarrier is identical.
17. base station according to claim 11, which is characterized in that the transmitter is used for
Using the emission mode of transmitting diversity, by least one non-MBSFN sub-frame, the reference signal and described is sent Data to be sent.
18. base station according to claim 11, which is characterized in that at least one non-MBSFN sub-frame, the target The centre frequency that the corresponding subcarriers of whole RE that the data to be sent of any terminal are mapped to are corresponded in NR cells is more than or small In the centre frequency of the direct current DC subcarriers of the target LTE cells.
19. base station according to claim 11, which is characterized in that the DC subcarriers of the target LTE cells and the mesh The DC subcarriers of mark NR cells are not overlapped;The centre frequency of the corresponding subcarrier of reference signal of the target LTE cells differs In the centre frequency of the DC subcarriers of the target NR cells.
20. base station according to claim 11, which is characterized in that the antenna port of the target LTE cells is first day Line end mouth and the second antenna port, the antenna ports of the target NR cells be the first antenna port, the second antenna port, Third antenna port and the 4th antenna port;
The processor, is used for:
The reference signal of the target LTE cells is mapped to by the first antenna port and second antenna port The RE of LTE reference signals at least one non-MBSFN sub-frame;
The processor, is additionally operable to:
For the third antenna port and the 4th antenna port, the reference signal of the target NR cells is determined, by institute The reference signal for stating target NR cells is mapped to the RE of NR reference signals at least one non-MBSFN sub-frame;
The processor is used for for the first antenna port and second antenna port, by the target NR cells Data to be sent are mapped to the RE in addition to the RE of the LTE reference signals at least one non-MBSFN sub-frame, for The third antenna port and the 4th antenna port, by the data to be sent of the target NR cells, be mapped to it is described extremely RE in a few non-MBSFN sub-frame in addition to the RE of the NR reference signals.
21. a kind of device of shared downstream spectrum, which is characterized in that described device includes:
Determining module, described in when the volume of transmitted data of target Long Term Evolution LTE cells is less than predetermined threshold value, determining Unscheduled at least one non-multimedia broadcast multi-broadcasting single frequency network MBSFN sub-frame of target LTE cells;
Mapping block, for being mapped to the reference signal of the target LTE cells at least one non-MBSFN sub-frame The resource unit RE of LTE reference signals;
The mapping block, for by the data to be sent of the new wireless NR cells of target, being mapped at least one non-MBSFN RE in subframe in addition to the RE of the LTE reference signals;
Sending module, for by least one non-MBSFN sub-frame, sending the reference signal and the number to be sent According to.
22. device according to claim 21, which is characterized in that the mapping block is used for:
By the data to be sent of the target NR cells, it is mapped in the data area of at least one non-MBSFN sub-frame and removes RE except the RE of the LTE reference signals.
23. device according to claim 21, which is characterized in that described device further includes:
Conversion module, to the reference signal of the target LTE cells, carries out linear transformation for being based on preset linear general formula, Wherein, the preset linear general formula is unitary matrice, and the mould of element is equal.
24. device according to claim 23, which is characterized in that the conversion module is used for:
Based on the preset linear general formula, to the data to be sent that are mapped in the non-MBSFN sub-frame of the target LTE cells and Reference signal carries out linear transformation.
25. device according to claim 21, which is characterized in that the mapping block is additionally operable to:
The reference signal of the target NR cells is mapped to described at least one by the reference signal for determining the target NR cells The RE of NR reference signals in a non-MBSFN sub-frame;
The mapping block, is used for:
The to be sent data of the target NR cell are mapped at least one non-MBSFN sub-frame except the LTE is referred to RE except signal and the RE of the NR reference signals.
26. device according to claim 21, which is characterized in that the target NR cells and the target LTE cells Identical, orthogonal frequency division multiplex OFDM symbol the length in interval of subcarrier is identical.
27. device according to claim 21, which is characterized in that the sending module is used for:
Using the emission mode of transmitting diversity, by least one non-MBSFN sub-frame, the reference signal and described is sent Data to be sent.
28. device according to claim 21, which is characterized in that at least one non-MBSFN sub-frame, the target The centre frequency that the corresponding subcarriers of whole RE that the data to be sent of any terminal are mapped to are corresponded in NR cells is more than or small In the centre frequency of the direct current DC subcarriers of the target LTE cells.
29. device according to claim 21, which is characterized in that the DC subcarriers of the target LTE cells and the mesh The DC subcarriers of mark NR cells are not overlapped;The centre frequency of the corresponding subcarrier of reference signal of the target LTE cells differs In the centre frequency of the DC subcarriers of the target NR cells.
30. device according to claim 21, which is characterized in that the antenna port of the target LTE cells is first day Line end mouth and the second antenna port, the antenna ports of the target NR cells be the first antenna port, the second antenna port, Third antenna port and the 4th antenna port;
The mapping block, is used for:
The reference signal of the target LTE cells is mapped to by the first antenna port and second antenna port The RE of LTE reference signals at least one non-MBSFN sub-frame;
The mapping block, is additionally operable to:
For the third antenna port and the 4th antenna port, the reference signal of the target NR cells is determined, by institute The reference signal for stating target NR cells is mapped to the RE of NR reference signals at least one non-MBSFN sub-frame;
The mapping block is used for for the first antenna port and second antenna port, by waiting for for target NR cells Transmission data is mapped to the RE in addition to the RE of the LTE reference signals at least one non-MBSFN sub-frame, for institute State third antenna port and the 4th antenna port, by the data to be sent of the target NR cells, be mapped to it is described at least RE in one non-MBSFN sub-frame in addition to the RE of the NR reference signals.
31. a kind of computer readable storage medium, including instruction, when the computer readable storage medium is run on base station When so that the base station executes the method described in any claim in the claim 1-10.
CN201710057602.4A 2017-01-26 2017-01-26 A kind of method and apparatus of shared downstream spectrum CN108366375A (en)

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