CN108990069A

CN108990069A - UMTS downstream spectrum sharing method and the network equipment

Info

Publication number: CN108990069A
Application number: CN201710414693.2A
Authority: CN
Inventors: 王新征
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-06-05
Filing date: 2017-06-05
Publication date: 2018-12-11

Abstract

The invention discloses a kind of UMTS downstream spectrum sharing method and the network equipments, its method includes: that downlink UMTS spread spectrum code resources to be shared are divided into the first downlink resource and the second downlink resource by the network equipment, first downlink resource is for sending UMTS signal, and second downlink resource is for sending non-UMTS signal；The network equipment sends non-UMTS signal to be sent by second downlink resource.When UMTS system and non-UMTS system share the frequency spectrum of the last one 5MHz in UMTS system, when the network equipment sends UMTS standard signal and non-UMTS standard signal simultaneously by the frequency spectrum of the 5MHz, predistortion processing can be carried out to sent non-UMTS standard signal in such a way that predistortion is handled, so that the non-UMTS signal after predistortion with UMTS signal by the frequency spectrum of shared 5MHz when being sent, the interference between UMTS signal and non-UMTS signal is avoided, and then improves communication quality.

Description

UMTS downstream spectrum sharing method and the network equipment

Technical field

The present embodiments relate to field of communication technology more particularly to a kind of Universal Mobile Communication System (Universal Mobile Telecommunications System, UMTS) downstream spectrum sharing method and the network equipment.

Background technique

With the development of Mobile Communication Industry, 2nd generation mobile communication technology (The 2nd Generation, 2G), the 3rd generation The user of mobile communication technology (The 3nd Generation, 3G) is to the 4th third-generation mobile communication technology (The 4nd Generation, 4G) so the 5th third-generation mobile communication technology (The 5nd Generation, 5G) system migration be a trend. For operator, existing 2G, 3G system often occupies a large amount of frequency spectrums, and newly deployed system (such as 4G) frequency spectrum has Limit.The migration of user is so that the frequency spectrum of old communication system (such as 2G, 3G) is more and more idle, new communication system (such as 4G) Frequency spectrum can be more and more nervous.The number of users of old communication system will not be reduced to 0 at once, it is possible to maintain in a long time Certain level.At this moment operator cannot close old communication system, can be used in its frequency spectrum by way of frequency spectrum share new Communication system on, i.e. the same section of two or more communication systems of spectrum service.

UMTS belongs to 3G, UMTS system commercial at present be frequency division duplex (Frequency Division Duplex, FDD), i.e. uplink and downlink use different frequency spectrums.The signal that UMTS system base station is sent to terminal is different physical channels The superposition of signal.Physical channel application cell other than synchronizing channel (Synchronisation Channel, SCH) is specific Scrambling code and different Orthogonal Variable Spreading Factor OVSFs (Orthogonal Variable Spreading Factor, OVSF) code (or being called spreading code).These physical channels are usually called different code channels.SCH does not use ovsf code and scrambling code.Base station Baseband processing unit (Building Base band Unit, BBU) and Remote Radio Unit (Remote Radio Unit, RRU the interface between) is common public radio interface (Common Public Radio Interface, CPRI), and transmitting is Baseband signal samples.The CPRI sample frequency of UMTS downlink is 3.84MHz.After baseband signal samples pass through CPRI to RRU, pass through Processing (such as up-conversion etc.) becomes radiofrequency signal and is launched by antenna.UMTS system can dispose multiple carrier waves simultaneously, Wherein the bandwidth of each carrier wave is 5MHz.

The prior art when realizing UTMS frequency spectrum share, with UTMS and long term evolution (Long Term Evolution, LTE for) sharing frequency spectrum, if the portfolio of certain section of time UMTS system is low, the portfolio of LTE system is high, UMTS system System just deactivates some or certain several carrier waves.The deactivated carrier wave of UMTS just leaves LTE system use for.If certain section of time UMTS The portfolio of system is high and the portfolio of LTE system is low, then LTE just deactivates some or certain several carrier waves.LTE is deactivated Carrier wave just leaves UMTS system use for.Since the bandwidth of UMTS system is fixed 5MHz, LTE will guarantee when deactivating carrier wave The continuous 5MHz frequency spectrum of a section is vacated, could be used in this way to UMTS.However, since the bandwidth of UMTS system is fixed 5MHz, once UMTS only remains the bandwidth of next 5MHz, it is non-if UTMS also needs to occupy the portions of bandwidth resource of the 5MHz UMTS system cannot use the existing frequency spectrum resource of UMTS.

Summary of the invention

To overcome Related Technical Issues present in the relevant technologies, the present invention provides a kind of downstream spectrum sharing method and net Network equipment.

In a first aspect, the embodiment of the invention provides a kind of UMTS downstream spectrum sharing methods, comprising:

Downlink UMTS spread spectrum code resources to be shared are divided into the first downlink resource and the second downlink resource by the network equipment, First downlink resource is for sending UMTS signal, and second downlink resource is for sending non-UMTS signal；

The network equipment sends non-UMTS signal to be sent by second downlink resource.

Since UMTS signal and non-UMTS signal use the 5MHz bandwidth spectrum of downlink UMTS system to be shared simultaneously, because This, the network equipment can determine which is for sending UMTS letter in downlink UMTS spread spectrum code resources to be shared first in embodiment Number, then other spread spectrum code resources avoid non-UMTS signal and UMTS signal from using identical expansion for sending non-UMTS signal Frequency code resource influences the transmission of signal.UMTS signal can be very good to send by the first downlink resource in this way, non-UMTS signal It can be sent by the second downlink resource.

In a kind of possible design method provided in embodiments of the present invention, the network equipment will be to be sent non- UMTS signal is sent by second downlink resource, comprising:

The network equipment handles non-UMTS signal to be sent by predistortion；

Predistortion treated non-UMTS signal is passed through second downlink resource and sent by the network equipment.

It needs to carry out predistortion processing to non-UMTS signal in the embodiment of the present invention, so that non-UMTS signal and UMTS signal Between will not relevant interference, terminal is available to be properly received UMTS signal or non-UMTS signal, guarantees communication quality.

In a kind of possible design method provided in embodiments of the present invention, the network equipment is by downlink to be shared UMTS spread spectrum code resources are divided into the first downlink resource and the second downlink resource, comprising:

The network equipment obtains the spreading code that the UMTS signal uses；

The spreading code that the network equipment uses the UMTS signal as first downlink resource, and will it is described to Under resource in shared downlink UMTS spread spectrum code resources in addition to the spreading code that the UMTS signal uses is as described second Row resource.

The embodiment of the present invention can be by the way that after UMTS signal determines and occupies shared downstream spectrum, the network equipment be obtained The resource road that UMTS signal uses can be very good to avoid UMTS signal into the code channel that non-UMTS signal uses in this way, be convenient for The transmission of UMTS signal and non-UMTS signal.

In a kind of possible design method provided in embodiments of the present invention, the network equipment will be to be sent non- UMTS signal is handled by predistortion, and treated that non-UMTS signal passes through second downlink by predistortion for the network equipment Resource is sent, comprising:

The network equipment obtains the quantity m that the UMTS signal to be sent uses spreading code, and the UMTS signal makes Scrambling code and the equivalent minimal frequency spreading factor SF of the spreading code；

The network equipment carries out predistortion processing by baseband sampling signal of following formula to non-UMTS, obtains pre- abnormal Non- UMTS signal y (n) after change:

Wherein, the non-UMTS signal after y (n) expression predistortion is SF in any one spreading factor of the UMTS signal The spreading code duration in value；X (n) indicates value of the baseband sampling signal of non-UMTS within the duration； c_i(n) spreading code of UMTS signal, a are indicated_iPass throughIt obtains, s (n) indicates the UMTS Value of the scrambling code of signal within the duration；1≤i≤m, m < SF, 0≤n≤SF-1；

The network equipment sends the y (n) by second downlink resource.

In a kind of possible design method provided in embodiments of the present invention, the baseband sampling frequency of the UMTS and institute The baseband sampling frequency for stating non-UMTS is equal.

The embodiment of the present invention is by the predistortion to non-UMTS signal, so that UMTS terminal is received by such as single diameter channel When UMTS signal, not will receive the interference of non-UMTS signal, in this way by sharing the downstream spectrum of UMTS system, can to avoid Interference of the non-UMTS signal to UMTS signal is caused when shared UMTS system downstream spectrum, the logical of UMTS terminal can be greatly improved Believe efficiency and communication quality.

In a kind of possible design method provided in embodiments of the present invention, the method also includes:

When the baseband sampling frequency of the non-UMTS is less than the baseband sampling frequency of the UMTS, the network equipment pair The baseband signal over-sampling of the non-UMTS, so that the baseband sampling frequency phase of the baseband sampling frequency of the non-UMTS and UMTS Deng obtaining the non-UMTS signal to be sent.

In embodiment provided by the invention, if baseband sampling frequency of the baseband sampling frequency of non-UMTS less than UMTS Rate, the network equipment can baseband signal over-sampling to non-UMTS, the baseband sampling frequency of UMTS non-in this way and the base band of UMTS Sample frequency can be equal, to obtain non-UMTS signal to be sent, combines the predistortion processing provided in above-described embodiment in this way Mode handles non-UMTS information, can be very good to avoid the interference between non-UMTS signal and UMTS signal.

In a kind of possible design method provided in embodiments of the present invention, the network equipment will be to be sent non- UMTS signal is handled by predistortion, comprising:

The network equipment obtains the corresponding first non-UMTS signal of non-UMTS subcarrier in UMTS reception bandwidth；

The network equipment obtains the sampled value of the first non-UMTS signal, and the sampled value of the first non-UMTS signal is institute The first non-UMTS sampled signal is stated, the sample frequency of the sampled value of the first non-UMTS signal is the base band of the UMTS signal Sample frequency；

Described first non-UMTS sampled signal is carried out the predistortion processing by the network equipment, obtains the first non-UMTS Distorted signal；

Described first non-UMTS distorted signal is carried out up-sampling treatment by the network equipment, obtains adopting on the first non-UMTS Sample signal；

The network equipment is non-plus second other than UMTS reception bandwidth by the described first non-UMTS up-sampling signal UMTS signal.

The embodiment provided by the invention falls into the subcarrier in the terminal receiving filter of UMTS by predistortion and corresponds to Baseband signal samples make non-UMTS signal and UMTS signal nearly orthogonal.The terminal of UMTS is on a certain diameter of descrambling and de-spreading UMTS signal when, non-UMTS signal identical with the UMTS signal time delay does not interfere the UMTS signal, it is ensured that Communication quality.

In a kind of possible design method provided in embodiments of the present invention, the baseband sampling frequency of the non-UMTS is big In the baseband sampling frequency of the UMTS, the method also includes:

The network equipment carries out down-sampled processing to the non-UMTS signal, obtains the down-sampled signal of non-UMTS, described The sample frequency of the non-down-sampled signal of UMTS is equal to the sample frequency of UMTS baseband sampling signal；

The network equipment obtains the down-sampled preceding distortion sequence of the non-UMTS signal；

The non-UMTS signal is subtracted the distortion sequence by the network equipment, the non-UMTS after obtaining the predistortion Signal.

In a kind of possible design method provided in embodiments of the present invention, in the UMTS signal and non-UMTS signal When being emitted by co-sited, the network equipment passes through mutiple antennas respectively and sends the UMTS signal or the non-UMTS signal, Each antenna sends identical UMTS or non-UMTS signal in the multiple antenna；

Wherein, the antenna amount that the network equipment sends that the UMTS signal uses is adopted with the non-UMTS signal is sent Antenna amount is identical.

Embodiment provided by the invention, all subcarriers by having comprehensively considered LTE or NR (whether fall in UMTS UE receiving filters bandwidth in), and strictly make non-UMTS signal and UMTS signal in orthogonal.In this way, being single diameter in channel And when UMTS and non-UMTS signal co-sited emit, which can obtain accurate orthogonal effect, the i.e. terminal of UMTS not It will receive the interference of the non-UMTS signal such as LTE or NR.

In a kind of possible design method provided in embodiments of the present invention, in the UMTS signal and non-UMTS signal When being emitted by co-sited, the network equipment is handled the non-UMTS signal by default emission filter, described pre- If emission filter is identical as the emission filter used when handling the UMTS signal.

The network equipment sends predistortion information to terminal, and the predistortion information is used to indicate the terminal and receives institute Non- UMTS signal is stated, the predistortion information includes: the SF of scrambling code information and spreading code that the cell of the UMTS signal uses And number.

The predistortion that the terminal of non-UMTS is sent using base station in the embodiment of the present invention handles the letter received for information about Number, the terminal of non-UMTS can be made to avoid or partially avoid interference caused by the signal of UMTS, to improve communication quality.

Second aspect, the embodiment of the present invention provide a kind of network equipment, comprising: processor, under will be to be shared Row UMTS spread spectrum code resources are divided into the first downlink resource and the second downlink resource, and first downlink resource is for sending UMTS Signal, second downlink resource is for sending non-UMTS signal；

Communication interface, for sending non-UMTS signal to be sent by second downlink resource.

In a kind of possible design method provided in embodiments of the present invention, the processor is also used to the network Equipment handles non-UMTS signal to be sent by predistortion；

The communication interface is also used to predistortion treated non-UMTS signal passing through second downlink resource and send out It send.

In a kind of possible design method provided in embodiments of the present invention, the processor is also used to obtain described The value of spreading code and scrambling code that UMTS signal uses；

The processor, the spreading code for being also used to use the UMTS signal is as first downlink resource；

The communication interface, the UMTS signal will be removed by being also used in the downlink UMTS spread spectrum code resources to be shared make Resource except the spreading code used is as second downlink resource.

In a kind of possible design method provided in embodiments of the present invention, the processor is also used to obtain described UMTS signal to be sent uses the quantity m of spreading code, the scrambling code and the spreading code that the UMTS signal uses are equivalent Minimal frequency spreading factor SF；

The processor is also used to carry out predistortion processing by baseband sampling signal of following formula to non-UMTS, obtain Non- UMTS signal y (n) after to predistortion:

The communication interface is also used to send the y (n) by second downlink resource.

In a kind of possible design method provided in embodiments of the present invention, the processor is also used to described non- When the baseband sampling frequency of UMTS is less than the baseband sampling frequency of the UMTS, to the baseband signal over-sampling of the non-UMTS, So that the baseband sampling frequency of the non-UMTS is equal with the baseband sampling frequency of UMTS, the non-UMTS letter to be sent is obtained Number.

In a kind of possible design method provided in embodiments of the present invention, the communication interface is also used to obtain The corresponding first non-UMTS signal of non-UMTS subcarrier in UMTS reception bandwidth；

The processor is also used to obtain the sampled value of the first non-UMTS signal, the sampling of the first non-UMTS signal Value is the described first non-UMTS sampled signal, and the sample frequency of the sampled value of the first non-UMTS signal is the UMTS signal Baseband sampling frequency；

The processor is also used to the described first non-UMTS sampled signal carrying out the predistortion processing, obtains first Non- UMTS distorted signal；

The processor is also used to the described first non-UMTS distorted signal carrying out up-sampling treatment, it is non-to obtain first UMTS up-samples signal；

The processor is also used to the described first non-UMTS up-sampling signal plus second other than UMTS reception bandwidth Non- UMTS signal.

In a kind of possible design method provided in embodiments of the present invention, the processor is also used to described non- UMTS signal carries out down-sampled processing, obtains the down-sampled signal of non-UMTS, the sample frequency etc. of the non-down-sampled signal of UMTS In the sample frequency of UMTS baseband sampling signal；

The processor is also used to obtain the down-sampled preceding distortion sequence of the non-UMTS signal；

The processor is also used to the non-UMTS signal subtracting the distortion sequence, after obtaining the predistortion Non- UMTS signal.

In a kind of possible design method provided in embodiments of the present invention, in the UMTS signal and non-UMTS signal When being emitted by co-sited, the communication interface is also used to send the UMTS signal or described non-by mutiple antennas respectively UMTS signal, each antenna sends identical UMTS or non-UMTS signal in the multiple antenna；

In a kind of possible design method provided in embodiments of the present invention, in the UMTS signal and non-UMTS signal When being emitted by co-sited, the processor is also used to handle the non-UMTS signal by default emission filter, institute It is identical as the emission filter used when handling the UMTS signal to state default emission filter.

In a kind of possible design method provided in embodiments of the present invention, the communication interface is also used to terminal Predistortion information is sent, the predistortion information is used to indicate the terminal and receives the non-UMTS signal, the predistortion letter Breath includes: the SF and number of scrambling code information and spreading code that the cell of the UMTS signal uses.

The third aspect, the embodiment of the invention provides a kind of computer program products comprising instruction, when it is being calculated When being run on machine, so that computer executes above-mentioned UMTS downstream spectrum sharing method.

Fourth aspect, the embodiment of the invention provides a kind of communication system, which includes network described in above-mentioned aspect Equipment.

5th aspect, the embodiment of the invention provides a kind of computer storage mediums, for being stored as the above-mentioned network equipment Computer software instructions used, it includes for executing program designed by above-mentioned aspect.

6th aspect, the embodiment of the invention provides a kind of chip systems, which includes processor, for supporting The network equipment realizes function involved in above-mentioned aspect, for example, for example generating or handling data involved in the above method And/or information.In a kind of possible design, the chip system further includes memory, the memory, for saving data The necessary program instruction of sending device and data.The chip system can be made of chip, also may include chip and other points Vertical device.

UMTS downstream spectrum provided in an embodiment of the present invention is shared and the network equipment, total in UMTS system and non-UMTS system When enjoying the frequency spectrum of the last one 5MHz in UMTS system, UMTS standard letter is sent by the frequency spectrum of the 5MHz simultaneously in the network equipment Number and when non-UMTS standard signal, can be carried out in such a way that predistortion is handled to sent non-UMTS standard signal pre- abnormal Change processing, so that the non-UMTS signal after predistortion avoids making when sending with UMTS signal by the frequency spectrum of shared 5MHz At the interference between UMTS signal and non-UMTS signal, and then improve communication quality.

Detailed description of the invention

Figure 1A is possible application scenarios schematic diagram provided in an embodiment of the present invention；

Figure 1B is the Orthogonal Variable Spreading Factor OVSF schematic diagram of UMTS provided in an embodiment of the present invention；

Fig. 2 is downlink transmission schematic diagram of the communication system provided in an embodiment of the present invention when being communicated；

Fig. 3 is scrambling code and the spreading code signal of the baseband signal samples and UMTS of non-UMTS standard in the embodiment of the present invention Figure；

Fig. 4 is the subcarrier spectrum schematic diagram of UMTS receiving filter and non-UMTS signal in the embodiment of the present invention；

Fig. 5 is position view of the frequency spectrum of LTE and UMTS in the embodiment of the present invention in frequency；

Fig. 6 is the subcarrier spectrum schematic diagram of LTE or NR in the embodiment of the present invention

Fig. 7 is the subcarrier spectrum schematic diagram of NR in the embodiment of the present invention

Fig. 8 is the schematic diagram that the embodiment of the present invention only carries out predistortion to the subcarrier fallen in UMTS reception bandwidth

Fig. 9 is processing schematic when comprehensively considering all subcarriers in the embodiment of the present invention

Figure 10 is the schematic diagram that single diameter adds co-sited to emit

Figure 11 is the schematic diagram that multipath adds co-sited to emit in the embodiment of the present invention

Figure 12 is the schematic diagram that multipath adds not co-sited in the embodiment of the present invention

Figure 13 is the schematic diagram that the embodiment of the present invention summarizes that multipath adds co-sited to add different antennae port

Figure 14 is that non-UMTS signal emits on multiple antennas in the embodiment of the present invention and UMTS signal is on an antenna The schematic diagram of transmitting

Figure 15 is the schematic diagram that non-UMTS signal and UMTS signal all emit on multiple antennas in the embodiment of the present invention

Figure 16 is the schematic diagram that UMTS is Chong Die with the portions of the spectrum of LTE or NR in the embodiment of the present invention

Figure 17 is the processing schematic of the fractional bandwidth of LTE and NR and UMTS transmitting terminal when Chong Die in the embodiment of the present invention

Figure 18 is that the power spectrum of the UMTS signal of LTE and the 5MHz bandwidth of 3MHz system bandwidth in the embodiment of the present invention is close Spend schematic diagram

Figure 19 is the PSD schematic diagram on the RB of PSD and the LTE scheduling of UMTS in the embodiment of the present invention

Figure 20 is the schematic diagram that multiple non-UMTS standards and UMTS share frequency spectrum in the embodiment of the present invention

Figure 21 is the schematic diagram of the frequency spectrum share of filtered UMTS and other standards in the embodiment of the present invention

Figure 22 is that downstream spectrum shares schematic diagram in the embodiment of the present invention

Figure 23 A is UMTS downstream spectrum sharing method flow chart provided in an embodiment of the present invention；

Figure 23 B is the flow chart of step S120 in Figure 23 A；

Figure 24 is the flow chart of step S110 in Figure 23 A；

Figure 25 is another flow chart of step S120 in Figure 23 A；

Figure 26 is the another flow chart of step S120 in Figure 23 A；

Figure 27 is the another flow chart of step S120 in Figure 23 A；

Figure 28 is the UMTS downstream spectrum sharing method flow chart that further embodiment of this invention provides；

Figure 29 is the network equipment schematic diagram that further embodiment of this invention provides.

Specific embodiment

With reference to the accompanying drawing, the embodiment of the present invention is described.

The network architecture and business scenario of description of the embodiment of the present invention are to more clearly illustrate implementation of the present invention The technical solution of example, does not constitute the restriction for technical solution provided in an embodiment of the present invention, those of ordinary skill in the art It is found that technical solution provided in an embodiment of the present invention is for similar with the differentiation of the network architecture and the appearance of new business scene The technical issues of, it is equally applicable.

As shown in Figure 1A, user equipment (UE) passes through wireless access network (Radio Access Network, abbreviation RAN) and core Heart net (Core Network, abbreviation CN) accesses IP multimedia subsystem (IP Multimedia Subsystem, IMS) network. The technology that the present invention describes can be adapted for long term evolution (Long Term Evolution, abbreviation LTE) system or other are adopted With the wireless communication system of various wireless access technologys, for example, by using CDMA, frequency division multiple access, time division multiple acess, orthogonal frequency Multiple access, the system of the access technologies such as single-carrier frequency division multiple access.Further, it is also possible to be suitable for using the subsequent evolution system of LTE system System, such as the 5th generation 5G system.For clarity, it is only illustrated by taking LTE system as an example here.In LTE system, evolution The land UMTS face wireless access (Evolved Universal Terrestrial Radio Access Network abbreviation E- UTRAN it) is used as wireless access network, evolution block core net (Evolved Packet, Core, abbreviation EPC) is used as core net.UE IMS network is accessed by E-UTRAN and EPC.

In the application, noun " network " and " system " are often used alternatingly, but it will be appreciated by those skilled in the art that its Meaning.User equipment (UE) involved by the application may include the various handheld devices with wireless communication function, vehicle-mounted set Standby, wearable device calculates equipment or is connected to other processing equipments of radio modem, and various forms of users Equipment (User Equipment, abbreviation UE), mobile station (Mobile station, abbreviation MS), terminal (terminal), terminal Equipment (Terminal Equipment) etc..For convenience of description, in the application, apparatus mentioned above is referred to as user equipment Or UE.The base station (base station, abbreviation BS) involved in the present invention arrived be one kind be deployed in wireless access network to for The device of UE offer wireless communication function.The base station may include various forms of macro base stations, micro-base station, relay station, access Point etc..In the system using different wireless access technologys, the title for having the equipment of base station functions may not Together, such as in the lte networks, the node B (evolved NodeB abbreviation: eNB or eNodeB) of referred to as evolution, in the third generation In 3G network, referred to as node B (Node B) etc..It is above-mentioned to provide wireless communication function for UE in the application for convenience of description Device is referred to as base station or BS.

Since the bandwidth of UMTS system is fixed 5MHz, once UMTS only remains the bandwidth of next 5MHz, if UTMS Also need to occupy the portions of bandwidth resource of the 5MHz, non-UMTS system cannot use the existing frequency spectrum resource of UMTS, therefore, existing There is technology the UMTS bandwidth of the 5MHz and other non-UMTS systems can not be carried out the shared of downstream spectrum.In order to solve existing skill Art technical problem present in, the embodiment of the invention provides a kind of UMTS downstream spectrum sharing method and devices.

In the embodiment of the present invention, the frequency spectrum of the last one 5MHz in UMTS system is shared in UMTS system and non-UMTS system When, it can be the signal for sending non-UMTS standard on the code channel that UMTS standard does not use, realize UMTS standard and non-UMTS system Formula frequency spectrum is shared.But it shares on frequency spectrum at this, in order to prevent between the signal of UMTS standard and the signal of non-UMTS standard Interference, and then influence normally to communicate between the network equipment and terminal, the embodiment of the present invention is realizing UMTS standard and non-UMTS Standard frequency spectrum it is shared when, predistortion processing is carried out to non-UMTS standard signal, so that treated that UMTS signal exists for predistortion When sending by shared frequency spectrum, the interference between UMTS signal can be avoided, and then can largely guarantee Communication quality.

It should be noted that the non-UMTS standard being related in the embodiment of the present invention, can be global system for mobile communications (Global System for Mobile Communication, GSM), LTE and new wireless (New Radio, NR) etc..Separately Outside, the UMTS standard signal and non-UMTS standard signal being related in the embodiment of the present invention, generally refer to downlink signal.

Wherein, UMTS system can dispose multiple carrier waves simultaneously, and each carrier wave is 5MHz.Ovsf code is also known as channelizing Code, for distinguishing the different transmission connections from same cell, in terms of downlink, what ovsf code was distinguished is the different chains an of cell Road connection, the length of ovsf code can be indicated with SF.The spreading code that UMTS is used can obtain in the way of Figure 1B, OVSF The value of each element can be 1 or -1 in code sequence.The scrambling code length that UMTS system downlink uses is 38400 chips, right Answer the wireless frame length of 10ms.Each element of scrambler sequence is the plural number that mould is 1.

In addition, the LTE system as 4G, can be divided into LTE time division duplex (Time Division Duplexing, TDD) With LTE FDD, in LTE FDD system, uplink and downlink use different frequency spectrums.It is by not with downlink signal in UMTS system Different with the superposition of the signal of code channel, the downlink signal of LTE system is made of the superposition of the sub-carrier signal of different frequency.Table 1 is the relevant parameter of the LTE system of different system bandwidths, and as shown in table 1, the LTE system of different system bandwidths has different CPRI interface rate.Sample frequency in real system can be higher than the numerical value in table 1, that is, over-sampling.LTE system can also To dispose multiple carrier waves, wherein the bandwidth of each carrier wave can be chosen in table 1 (according to agreement, the choosing of the bandwidth of multiple carrier waves It takes and have different limitations in different frequency ranges, is arbitrarily chosen from table).

Table 1

System bandwidth/MHz	1.4	3	5	10	15	20
							Sample frequency/MHz	1.92	3.84	7.68	15.36	23.04	30.72
Available subcarrier number	72	180	300	600	900	1200

It can be with more than one, for example, one kind that NR may be used for the NR as 5G system, the NR waveform that can be used Waveform can be signal same or similar with LTE system, which can be the orthogonal frequency division multiplexing based on subcarrier superposition The form of (Orthogonal Frequency Division Multiplexing, OFDM) signal, only signal parameter (such as Subcarrier spacing) it has any different, add filter on different subbands or full bandwidth to limit frequency spectrum.It is related in the embodiment of the present invention And the NR arrived, if can be the NR system based on OFDM waveform or similar OFDM waveform without specified otherwise.

Since the baseband sampling frequency of non-UMTS standard signal may be equal to, less or greater than UMTS standard signal Baseband sampling frequency, therefore, for these three situations, the following embodiments of the present invention will illustrate respectively.

Fig. 2 is downlink transmission schematic diagram of the communication system when being communicated, as shown in Fig. 2, the communication system packet Include base station 100 and terminal 200, wherein base station 100 can be management terminal 200 and controlling terminal 200 in cellular network and receive And send the network equipment of data.Terminal 200 is the user equipment (User communicated in cellular network with base station 100 Equipment, UE).

Base station 100 can emit UMTS signal and non-UMTS signal, the non-UMTS signal can be it is one or more other The signal of standard, such as GSM, LTE and NR.The signal of different systems occupies the identical frequency spectrum in identical or part.In figure Terminal 200 can both have the terminal of UMTS type, also there is the terminal of non-UMTS type.

In the embodiment of the present invention, the frequency spectrum of the last one 5MHz in UMTS system is shared in UMTS system and non-UMTS system When, UMTS standard signal and non-UMTS standard signal are sent simultaneously by the frequency spectrum of the 5MHz in base station 100, if non-UMTS system The baseband sampling frequency of formula is equal to the baseband sampling frequency of UMTS, can be believed by following manner to sent non-UMTS standard Number predistortion processing is carried out, so that non-UMTS signal after predistortion is being sent with UMTS signal by the frequency spectrum of shared 5MHz When, the interference between UMTS signal and non-UMTS signal is avoided, and then improve communication quality.

Assuming that the baseband signal (i.e. the corresponding analog signal of baseband signal samples) of non-UMTS standard is x_c(t).On CPRI The baseband signal samples of transmitting are x (n)=x_c(nT), wherein T is the sampling interval.The inverse of T is sample frequency.In the embodiment Assuming that the baseband signal samples interval of non-UMTS standard is equal to the baseband sampling interval of UMTS, i.e.,

For simplicity, the scrambling code that might as well assume UMTS signal is s (n).UMTS has used two spreading code c₁(n) and c₂(n).Assuming that the spreading factor of two spreading codes is all SF.If spreading factor is different, just select spreading factor small.Such as Shown in Fig. 1, (multiplied by coefficient -1 when needing) that the big spreading code of spreading factor is made of the small spreading code of spreading factor.

Fig. 3 is that the scrambling code and spreading code of the baseband signal samples and UMTS of non-UMTS standard in the embodiment of the present invention are illustrated Figure, as shown in figure 3, the embodiment of the present invention passes through the baseband signal to a non-UMTS standard of each SF (minimum value of spreading factor) It samples and carries out predistortion, i.e. virtual coil part in Fig. 3, in the section of this predistortion, the baseband signal samples of non-UMTS standard For x (n), then the network equipment (such as base station 100) can be carried out by baseband sampling signal of the following formula (1) to non-UMTS Predistortion processing obtains predistortion treated non-UMTS signal y (n):

Wherein, m be the network equipment obtain UMTS signal to be sent using spreading code quantity and the spreading code it is equivalent Minimal frequency spreading factor SF；Y (n) indicates that the non-UMTS signal after predistortion is in any one spreading factor of the UMTS signal Value in the spreading code duration of SF；X (n) indicates value of the baseband sampling signal of non-UMTS within the duration；c_i (n) spreading code of UMTS signal, a are indicated_iPass throughIt obtains, s (n) indicates the UMTS signal Value of the scrambling code within the duration；And 1≤i≤m, m < SF, 0≤n≤SF-1；

This embodiment of the invention completes the predistortion processing of the baseband signal of non-UMTS standard through the above way, i.e., from x (n) y (n) is changed to, y (n) is sent into RRU by base station 100, and is emitted by RRU.

It should be noted that, in conjunction with the corresponding embodiment of Fig. 3 and Fig. 3, being point in predistortion processing in the embodiment of the present invention Duan Jinhang's, each section is all processing in this way, wherein the scrambling code value of each section of UTMS is different, although all It is written as s (n).

In addition, y (n) interferes the terminal of UMTS in order to prevent in the embodiment of the present invention, for single diameter channel, The terminal of UMTS can be to y (n) to descrambling and de-spreading processing is carried out, shown in the processing mode of specific descrambling and de-spreading such as formula (2) (in fact Apply and assume that the terminal of UMTS can accurately be completed mostly through searching in example):

Similarly:

In conjunction with above-mentioned formula (1), it can illustrate that terminal, will not be non-when receiving UMTS signal by formula (2) and (3) UMTS signal is interfered.

It should be noted that the UMTS signal and non-UMTS signal that are related in the embodiment of the present invention, if do not illustrated, Ordinary circumstance refers to the UMTS signal and non-UMTS signal sent by sharing UMTS system 5MHz bandwidth.In addition, this hair UMTS signal and non-UMTS signal in bright embodiment, refer respectively to the signal of UMTS standard and the signal of non-UMTS standard.

In another embodiment provided by the invention, in conjunction with the various embodiments described above, if the baseband sampling of non-UMTS standard Frequency be less than UMTS baseband sampling frequency, then this embodiment of the invention can by non-UMTS signal carry out over-sampling, So that its sampling frequency is equal to the sample frequency of UMTS, and passes through the processing mode pair of above-described embodiment including formula (1) Non- UMTS signal carries out predistortion processing.In addition, if non-UMTS signal is LTE signal or NR signal, it can in the embodiment By using bigger inverse fast Fourier transform (Inverse Fast Fourier Transform, IFFT) mode of counting It is sampled.

In another embodiment provided by the invention, in conjunction with the various embodiments described above, if the base band of non-UMTS standard is adopted Sample frequency is greater than the baseband sampling frequency of UMTS, then non-UMTS signal at this time generally refers to LET signal or NR signal.? When the baseband sampling frequency of non-UMTS standard is greater than the baseband sampling frequency of UMTS, the embodiment provided by the invention can pass through Such as under type processing:

Mode one: only corresponding non-to all or part of subcarrier in the subcarrier fallen in UMTS system reception bandwidth UMTS signal carries out predistortion.

Fig. 4 is the subcarrier spectrum schematic diagram of UMTS receiving filter and non-UMTS signal in the embodiment of the present invention, such as Fig. 4 Shown, Fig. 4 indicates the receiving filter amplitude-frequency response of the terminal side UMTS and the schematic diagram of corresponding non-UMTS channel distortion experienced, Non- UMTS signal in the embodiment is LTE signal or NR signal.Nominally the bandwidth of UMTS system is 5MHz, but stringent next Say only 4.68MHz.LTE or NR can be made of multiple subcarriers, LTE subcarrier spacing (i.e. adjacent sub-carrier center frequency The interval of rate) it is 15kHz.The subcarrier spacing of NR is changeable.By 4 figures it is found that a part of subcarrier falls in terminal side UMTS In the reception bandwidth of system, a part of subcarrier is fallen in outside reception bandwidth.For LTE, there are two the centers of subcarrier Frequency is exactly equal to the cutoff frequency of UMTS system receiving filter.The digital representation of the top of each subcarrier spectrum in Fig. 4 The number of corresponding subcarrier.The subcarrier that number is 0 is direct current (Direct Current, DC) subcarrier.LTE downlink is not make With (what is transmitted above is 0) of DC subcarrier.Wherein, assume that DC subcarrier is in UMTS spectral centroid position in Fig. 4.If Subcarrier spacing is 15kHz (such as LTE), is connect then the both sides DC UMTS can just occur with -156 subcarrier marked as 156 At the cutoff frequency for receiving filter.N in Fig. 4 number is available subcarrier number.For LTE, the value of N is shown in above-mentioned implementation The third line of table 1 in example.

Fig. 5 is position view of the frequency spectrum of LTE and UMTS in the embodiment of the present invention in frequency, as shown in figure 5, for For LTE, even if the DC subcarrier of LTE also will appear LTE's not in the center of terminal side UMTS system receiving filter Two subcarriers are just fallen on the cutoff frequency of terminal side UTMS system receiving filter.This is as defined in agreement, UMTS with The centre frequency of LTE cannot arbitrarily select (such as centre frequency become larger or become smaller on the basis of fig. 4 half of subcarrier spacing), Otherwise having workload of the terminal of UMTS and LTE function when searching for network can greatly increase.

To derive that " half " subcarrier transforms to time domain be what due to more difficult, in the center of subcarrier frequency When rate is equal to the cutoff frequency of filter, it is one and does not allow tractable scene.In this case, one in the embodiment of the present invention Approximate way is only to consider that centre frequency falls in all or part of subcarrier in the subcarrier in receiving filter.Subsequent reality The subcarrier why apply regular meeting elaboration has, which has obviously been fallen in bandwidth, not to be considered also.According to the corresponding embodiment of above-mentioned formula (1) In processing mode, the embodiment of the present invention falls in the corresponding time-domain signal of the subcarrier in receiving filter to centre frequency and samples (sample frequency 3.84MHz, the baseband sampling frequency equal to UMTS) carries out predistortion.

Three reasons lead to mode first is that an approximate processing mode below: first, there are centre frequencies to be equal to filter The subcarrier of cutoff frequency；Second, only select part rather than all subcarrier progress predistortion fallen in reception bandwidth；The Three, in the spectral leakage to bandwidth of the subcarrier outside reception bandwidth.The frequency spectrum of the subcarrier of LTE or NR may not be Fig. 4 It is only confined to as shown in finite bandwidth (being equal to subcarrier spacing).The frequency spectrum of the subcarrier of LTE or NR may be phase Mutually it is interleaved together.Fig. 6 is the subcarrier spectrum schematic diagram of LTE or NR in the embodiment of the present invention, as shown in fig. 6, son carries The hangover of the frequency spectrum of wave is so that subcarrier of the centre frequency not in the UMTS system receiving filters bandwidth of terminal side also will affect Sampling of the terminal to LTE or NR signal.

In fact, this approximate processing mode of mode one it is larger reduce it is non-when single diameter channel and co-sited emit The interference that the signal of UMTS communicates UMTS terminal.Only consider single diameter channel and co-sited emits scene, it is believed that by pre- After distortion, the terminal of UMTS not will receive the dry of the corresponding non-UMTS signal of subcarrier of the centre frequency in reception bandwidth It disturbs.The power of the frequency spectrum hangover of subcarrier of the centre frequency outside reception bandwidth is also smaller.End of the signal of non-UMTS to UMTS Interference caused by end is mainly equal to two subcarriers of terminal receiving filter cutoff frequency by centre frequency and falls in bandwidth Caused by the subcarrier not accounted for but inside, subcarrier is all in the receiving filter band of non-UMTS signal whole when without distorting The terminal of UMTS can be interfered.Wherein, the terminal of UMTS refers to the terminal for needing to receive UMTS signal.

For NR, the formulation of standard perhaps allows situation shown in Fig. 7 occur, i.e. the cut-off of terminal receiving filter Frequency just falls in the centre of NR adjacent sub-carrier centre frequency.Scene shown in Fig. 7 be easily determined in receiving filter and Subcarrier outside receiving filter, there is no situation of some subcarrier inside and outside receiving filter.Even for Fig. 7, side Formula one is theoretically also approximate, because the frequency spectrum hangover of the subcarrier outside receiving filter can be fallen in receiving filter, though It is smaller so to drop into the power come.For scene shown in Fig. 7, mode one can preferably reduce jamming power.

Fig. 8 is the schematic diagram that the embodiment of the present invention only carries out predistortion to the subcarrier fallen in UMTS reception bandwidth, such as Shown in Fig. 8, the sample frequency of two inputs in two adders is equal, and outputting and inputting for predistortion module can adopt respectively With the x (n) and y (n) of formula in above-described embodiment (1).

Even if being described below, why some subcarriers are fallen in reception bandwidth, can not carry out predistortion to it.It can by table 1 Know, the baseband sampling frequency of the LTE system of 5MHz system bandwidth is greater than the baseband sampling frequency of UMTS system.At this moment LTE system Available subcarrier number be 300.Correspond to Fig. 4, N=300.This shows all available of the LTE system of 5MHz system bandwidth The centre frequency of subcarrier is all fallen in the terminal reception bandwidth of UMTS, but baseband sampling frequency of the baseband sampling frequency greater than UMTS Rate.This is because LTE system transmitting terminal as UMTS without using originator molding filtration.This causes frequency spectrum suppression ratio UMTS Slowly.In this way, the band of the signal of the LTE system of 5MHz is wider than the bandwidth of UMTS.Meet sampling thheorem, the sampling of baseband signal Frequency is also greater than the baseband signal samples frequency of UMTS.If the sample frequency using 3.84MHz meets the UE for falling on UMTS Take-up it is wide in the corresponding signal of all subcarriers sampled, then " up-sampling " module of Fig. 8 will be unable to it is extensive without distortions The signal for high sample frequency of appearing again.The reason is that the sample frequency of 3.84MHz is not high enough, does not meet sampling thheorem, made after sampling It is lost at information.To not lose information, cannot consider close to receiving filter is high-end and two cutoff frequencies of low side Several subcarriers.It is more to give up the subcarrier number fallen, will not more lose information with 3.84MHz sampling.Although NR is also more The signal that a subcarrier is constituted, but NR is possible to do frequency spectrum some form of filtering.This can make frequency spectrum decline fast, There is no need to give up the subcarrier in too many band.

Mode two comprehensively considers whole subcarriers of non-UMTS signal.

Fig. 9 is processing schematic when comprehensively considering all subcarriers in the embodiment of the present invention, as shown in figure 9, calculating a₁, a₂Mode may refer to the corresponding embodiment of above-mentioned formula (1), the module of " calculate down-sampled before distortion sequence " is in Fig. 9 Recover distortion sequence corresponding with LTE or NR transmitting terminal (before crossing the receiving filter of UMTS).And the signal of transmitting terminal Bandwidth is very big, cannot be restored (because being unsatisfactory for sampling thheorem) by the sequence of 3.84MHz sample frequency.That is, In this case, it is known that the sequence of 3.84MHz sample frequency is the sequence that can not be recovered sample frequency and be higher than 3.84MHz. Specific to here, the module of mark " calculating down-sampled preceding distortion sequence " can have infinite multiple outputs, since which not known A is correctly, one in the sequence of power or the smallest high sample frequency of energy need to can only to be found in the embodiment i.e. It can.It should be noted that select power or the smallest sequence of energy be because at this moment predistortion caused by power loss and performance damage It loses minimum.

(namely sample frequency is 3.84MHz's to the list entries of the module of mark " calculating down-sampled preceding distortion sequence " Distortion sequence) it is denoted as column vector u, output sequence is denoted as column vector v.It can be obtained by derivation:

Λ Av=u (4)

Wherein, A indicates the matrix that convolution algorithm is carried out with the receiving filter of UMTS, A by UMTS receiving filter list The element of digit pulse response sequence is constituted；Λ indicates down-sampled process.The element of Λ is 0 or 1.If it is by sample frequency The sequence of 7.68MHz is downsampled to the sequence that sample frequency is 3.84MHz, then one kind may be:

In above-mentioned matrix (5), the 1 of every a line all moves right two column than lastrow.Λ is multiplied by a column vector with regard to phase When in by the 1st of column vector the, 3,5,7 ... a element takes out lines up a column vector again.It is exactly to be taken out in every two element Take first element.Certainly, second element in every two element can also be extracted as needed.At this moment the first row in Λ " 1 " appears in secondary series, and " 1 " of the second row appears in the 4th column, and so on.

In matrix (5), Λ, A and u be it is known, only v is unknown.As previously mentioned, needs of the embodiment of the present invention are looked for To the energy or the smallest v of power for meeting formula (5).This is an optimization problem, therefore, can by following formula (6) come Determine v.

Wherein, () in formula (6)^HIndicate conjugate transposition, arg indicates to seek the value of independent variable.Above formula is meant Asking under the constraint condition of Λ Av=u makes v^HThe smallest v of v.For column vector v, v^HThe mould for each element that v is equal to Quadratic sum.

A kind of mode of solution formula (6) is using pseudo inverse matrix.The Λ A pseudoinverse that v is equal to is multiplied by u.The process for solving v can be with Using existing mode, details are not described herein again.

All subcarriers that mode two has comprehensively considered LTE or NR (whether fall in the receiving filter of the UE of UMTS In bandwidth).The computation complexity of which two is higher than mode one.In addition, different from mode one, mode two is exactly without approximation Strictly make non-UMTS signal and UMTS signal in orthogonal.In this way, being that single diameter and UMTS and non-UMTS signal co-sited are sent out in channel When penetrating, mode two can obtain accurate orthogonal effect, i.e. the terminal of UMTS not will receive the dry of the non-UMTS signal such as LTE or NR It disturbs.

It should be noted that the co-sited transmitting being related in the embodiment of the present invention, refers to and is believed by the same Base Transmitter Number.

In above-mentioned related embodiment, generally require to add a premise: single diameter channel and co-sited transmitting, this scene is as schemed Shown in 10, Figure 10 is the schematic diagram that single diameter adds co-sited to emit.Under the scene, in receiving end (i.e. the terminal of UMTS) UMTS signal It is aligned with non-UMTS signal, as UMTS signal and non-UMTS signal in transmitting terminal (i.e. base station).It ensure that UMTS Terminal in descrambling and de-spreading UMTS signal, the signal of non-UMTS is because predistortion will not interfere UMTS signal.

Whether co-sited transmitting can be taking human as control, but be that single diameter channel can be affected by environment.It is past in the frequency range of LTE deployment Toward presentation multipath channel.Therefore, it is necessary to study " multipath+co-sited transmitting " scenes.The present embodiment only considers single transmitting antenna Or transmit antenna port, multiple transmitting antennas can be considered in other embodiments.If the signal of UMTS standard and non-UMTS standard Emit in identical antenna, then UMTS signal and non-UMTS signal can reach the terminal of UMTS by identical multipath channel. Different diameters has different time delay and channel fading random value.

Figure 11 is the schematic diagram that multipath adds co-sited to emit in the embodiment of the present invention, and as shown in figure 11, Figure 11 is one and includes The example of two diameters (a1 and a2).Transmitting terminal is the superposition of two signals, and receiving end is the superposition of four signals.In same UMTS signal and non-UMTS signal in orthogonal (not interfering with each other) on diameter, i.e., " UMTS signal a1 " and " non-UMTS in figure Signal a1 " is orthogonal, and " UMTS signal a2 " is orthogonal with " non-UMTS signal a2 ".The UE of UMTS is on a certain diameter of descrambling and de-spreading When UMTS signal (such as " UMTS signal a1 " in figure), it is (such as " non-in figure that UE can't see the non-UMTS signal on this diameter UMTS signal a1 ").But (whether UMTS signal is also non-UMTS signal, such as " UMTS in figure to the signal on other diameters Signal a2 " is exactly to interfere for the UMTS signal on the diameter with " non-UMTS signal a2 ").Even if not considering non-UMTS signal, Only consider UMTS signal, also has interference between the UMTS signal of different diameters.This is interfered between being referred to as diameter in umts.Multipath ring Under border, the presence of non-UMTS signal is interfered between increasing diameter.

If UMTS signal is from non-UMTS signal in different Base Transmitters, as shown in figure 12, Figure 12 is that the present invention is implemented Multipath adds the schematic diagram of not co-sited in example.Since the distance of two base stations to terminals is different, this is likely to result in even if two The transmitting signal (referring to the UMTS signal an of Base Transmitter and the non-UMTS signal of another Base Transmitter) of base station is in the time (this requires two synchronizing for base station) of upper alignment, not having any two signal in the signal that the terminal of UMTS receives is pair Neat.At this moment the signal of non-UMTS is all noisy to UMTS signal.The predistortion that base station side does non-UMTS signal is basic Do not work.

As the above analysis, the predistortion processing mode provided in the embodiment of the present invention is made to come into force, UMTS and non- UMTS signal must co-sited transmitting.The embodiment only considered the case where only one transmitting antenna of base station, following implementations The scene that example will consider that there are multiple transmitting antennas in a base station.

In another embodiment provided by the invention, as shown in figure 13, Figure 13 summarizes multipath for the embodiment of the present invention and adds altogether It stands and adds the schematic diagram of different antennae port.As shown in figure 13, two antennas of UMTS signal and non-UMTS signal a base station Emit on (antenna port).The distance of different antennae on one base station is not too large, and two emitting antennas is to terminal The communication environments of one receiving antenna experience are same or similar.This causes each transmitting antenna to the multipath channel of terminal Diameter have identical time delay, i.e. figure central diameter a1 is identical as the time delay of b1, and diameter a2 is identical as the time delay of b2.The fading coefficients of diameter are different It is fixed equal.When the distance of two emitting antennas be greater than half wavelength when, so that it may think two antennas to the channel of terminal be not Relevant, i.e. the fading coefficients of diameter a1 and a2 are uncorrelated, and the fading coefficients of diameter b1 and diameter b2 are uncorrelated.This cause this kind of scene with It is different in the scene of antenna (antenna port) hair shown in Figure 11.The latter is in the identical two signals experience of terminal side time delay Identical channel fading, and channel fading here is different.

According to the difference of emission mode, UMTS and non-UMTS standard can emit in one, two or more transmitting antennas Respective signal.If UMTS signal is sent out on an antenna, rather than UMTS signal is sent out on two antennas, as shown in figure 14, Figure 14 is that non-UMTS signal emits on multiple antennas in the embodiment of the present invention and what UMTS signal emitted on an antenna shows It is intended to.In height of the height of the rectangle of the mark " non-UMTS signal " of two antennas hair than the rectangle of mark " UMTS signal " in Figure 14 When sending out on two antennas, the signal power on each antenna will halve the low expression signal that is intended to, to guarantee total transmitting of base station Power is constant.If signal emits on multiple antennas, the power on each antenna is equal to power when single-antenna transmission Divided by antenna number.

Another processing mode provided in the embodiment of the present invention is the UMTS signal replication that will be sent out on an antenna It more parts, sends out on multiple antennas, as shown in figure 15, Figure 15 is non-UMTS signal in the embodiment of the present invention and UMTS signal more The schematic diagram emitted on a antenna.Transmission power on each antenna will accordingly decrease.It should be noted that replicating latter two The UMTS signal emitted on antenna be it is identical, the imperceptible signal of the UE of UMTS is issued from two antennas.This with UMTS as defined in agreement sends out on two antennas and is different.The scene that UMTS signal as defined in agreement is sent out on two antennas is There is different pilot signals (this UMTS signal that two antennas are sent out is different) on each transmitting antenna, terminal being capable of area Which antenna extraction of signal comes from.If UMTS signal emits on multiple antennas, rather than UMTS signal is sent out on an antenna It penetrates, then can both keep intact, can also will emit on non-UMTS signal replication to antenna identical with UMTS.

In addition, if UMTS signal is greater than 1 and equal with the transmitting antenna number of non-UMTS signal, it can be according to figure The transmitting UMTS signal of scene shown in 15 and non-UMTS signal, the UMTS signal at this moment emitted on two antennas are different.

It is Chong Die with the partial frequency spectrum of LTE or NR for UMTS in the embodiment of the present invention, and the baseband sampling frequency of LTE or NR Rate is greater than the case where 3.84MHz, and as shown in figure 16, Figure 16 is the portions of the spectrum of UMTS and LTE or NR in the embodiment of the present invention The schematic diagram of overlapping.The schematic diagram of the centre frequency of the subcarrier of the amplitude-frequency response and LTE or NR of the receiving filter of UMTS is such as Shown in Figure 16.The centre frequency for indicating subcarrier in Figure 16 with upward arrow, Ke Yijie identical as the arc meaning in Fig. 4 Close the explanation of embodiment in Fig. 4.

Figure 17 is fractional bandwidth and the processing schematic of UMTS transmitting terminal when Chong Die of LTE and NR in the embodiment of the present invention, The processing block diagram of base station side is as shown in figure 17.Different classes of arrow is corresponding with the arrow in Figure 16 in Figure 17.It needs to illustrate , IFFT module usually requires 2 integer time grid input in Figure 17, and the number of subcarrier is necessarily less than the value (in LTE In this way is exactly), the input terminal more than subcarrier number needs to fill out 0.The input of IFFT module is only a signal in Figure 17.Figure In the treatment process of predistortion module see the corresponding embodiment of formula in above-described embodiment (1).The top half of Figure 17 carries out Be N point IFFT, lower half portion carry out is M point IFFT.Result after IFFT is exactly the base of certain corresponding sample frequency Band signal sampled value.Wherein, sample frequency are as follows:

f_s=FFT_size·Δf (7)

Wherein FFT_sizeFor the size (or being the points of IFFT, be exactly the value of N or M in Figure 17) of IFFT, Δ f is Subcarrier spacing.Since the sample frequency of top half in Figure 17 is greater than the sample frequency of lower half portion, top half IFFT point number is bigger than the IFFT point number of lower half portion.The module of Figure 17 acceptance of the bid " CP " is to add the operation of CP.If there is NR waveform CP is not used, then the module of the mark " CP " in figure does not just do any operation.

" up-sampling " module in Figure 17 can be realized by interpolation algorithm, can be realized using prior art, herein not It repeats again.

The embodiment provided by the invention falls into the subcarrier in the terminal receiving filter of UMTS by predistortion and corresponds to Baseband signal samples make non-UMTS signal and UMTS signal nearly orthogonal.The terminal of UMTS is on a certain diameter of descrambling and de-spreading UMTS signal when, (such as also on this diameter) non-UMTS signal identical with the UMTS signal time delay to the UMTS signal not It interferes, it is ensured that communication quality.

In another embodiment provided by the invention, since the emission filter of UMTS is identical as receiving filter, generally It is all root raised cosine filter.The effect of emission filter is so that frequency spectrum decline fastly, reduces the interference to adjacent spectra.UMTS Receiving filter and emission filter constitute matched filtering so that there is not intersymbol interference.LTE is not using special transmitting Filter or receiving filter.This causes the power spectrum suppression ratio UMTS of LTE signal slow.

Figure 18 is that the power spectrum of the UMTS signal of LTE and the 5MHz bandwidth of 3MHz system bandwidth in the embodiment of the present invention is close Schematic diagram is spent, as shown in figure 18, by comparing the power spectral density of the UMTS signal of the LTE and 5MHz of 3MHz system bandwidth.LTE Power spectral density (Power Spectral Density, PSD) have a decline spike at 0 frequency, this is because LTE is in DC Without passing data on subcarrier.

Square having with the PSD of UMTS signal for the mould of the amplitude-frequency response of the receiving filter and emission filter of UMTS is identical Shape.As can see from Figure 18, influence of the UMTS receiving filter to the LTE signal of 3MHz system bandwidth is smaller, because About 50dB has been had declined from the PSD of LTE signal on the frequency point that level is begun to decline in filter amplitude-frequency response.

Therefore, the embodiment provided by the invention is when realizing that UMTS signal and non-UMTS signal co-sited emit, Ke Yi The lesser LTE of bandwidth or bandwidth are smaller and the transmitting terminal of the NR of emission filter is not used also to add a hair as UMTS Penetrate filter.Emission filter is realized in RRU in actual product.Allow the LTE (such as system bandwidth of 3MHz) of small bandwidth Or NR also adds an emission filter to mean that LTE or NR baseband signal can first be superimposed then process with the baseband signal of UMTS The same RRU launches.Cost can be substantially reduced in this way.

Since non-UMTS signal uses the downstream spectrum shared in UMTS, in order to determine that it is shared that non-UMTS signal needs to occupy Downstream spectrum on which code channel, to avoid the code channel that UMTS signal uses, and determine that the terminal of non-UMTS is believed by UMTS Number great interference, therefore, in another embodiment provided by the invention, the downlink business of UMTS is broadly divided into be uploaded in DPCH Defeated R99 business (voice service just belongs to this kind of business), and the HSDPA business transmitted on the hs-pdsch.HS-PDSCH SF be 16.Once the code channel number for leaving non-UMTS signal for will be seldom using the physical channel.This suffers non-UMTS signal By very big distortion, performance can not be ensured.When therefore, using the present invention, UMTS downlink cannot use HS-PDSCH channel.It is another A cannot be the handling capacity in order to improve downlink HSDPA business using the reason of HS-PDSCH channel, and base station is often by downlink Transmission power in transmission power all gives the physical channel.This can reduce the received signal to noise ratio of the terminal of non-UMTS. In the scene for needing frequency spectrum share, UMTS standard mainly completes voice call function, and (in the support of voice service, UMTS is better than LTE, unless LTE disposes VoLTE), data service (downlink just corresponds to HSDPA business) just moves to other standards (such as LTE Deng) on.

The common down channel of UMTS mainly has SCH (without using spreading code), P-CPICH (SF 256), P-CCPCH (SF For 256).Wherein SCH and P-CCPCH is time-multiplexed.According to common configuration, the total transmission power of these three physical channels accounts for base Pack the 16% of power.By equivalent, common signal channel consumes the code channel that 1 SF is 128.Here SCH is not accounted for.

The voice service of UMTS is carried on dedicated physical channel (Dedicated Physical Channel, DPCH), Wherein DPCH includes Dedicated Physical Control Channel (Dedicated Physical Control Channel, DPCCH) and dedicated Physical data channel (Dedicated Physical Data Channel, DPDCH).Voice service for AMR12.2k, The SF of DPCH is 128.Distance and channel type of the average emitted power of DPCH with UE apart from base station are related.It is tied according to emulation Fruit, when (the signal power ratio of the signal power of this cell and adjacent area that i.e. terminal receives is 3dB to Ior/Ioc=3dB.The value Bigger terminal is smaller just closer to cell edge closer to base station.Here 3dB shows that terminal is in the middle far point of cell), letter Road type is Typical Urban (Typical Urban, TU) channel, and when terminal is mobile by 3km/h, the average emitted power of DPCH is big About the 2% of base station full power.

In the embodiment of the present invention, non-UMTS signal will hide the common signal channel of UMTS or voice service uses SF=128 Code channel.If there are two terminals to carry out voice service simultaneously for downlink, just there are two the DPCH of SF=128.It is simple to consider Predistortion, the maximum received signal to noise ratio of non-UMTS standard is restricted to 10lg (128) ≈ 21dB, and (non-UMTS signal hides 1 SF =128 code channel), 18dB (code channel for hiding 2 SF=128), 15dB (code channel for hiding 3 SF=128).

UMTS signal is interference for the terminal of non-UMTS.The maximum that the interference of UMTS also limits non-UMTS standard connects Receive signal-to-noise ratio.If UMTS only sends out above-mentioned common signal channel, without voice service, then considering UMTS signal pair merely The interference of LTE terminal, the maximum reception noise that the LTE standard of the 5MHz system bandwidth completely overlapped with UMTS frequency spectrum can obtain Than for(25 RB of scheduling, that is, use all RB), 12dB (scheduling 10 RB), 14dB (6 RB of scheduling), 19dB (2 RB of scheduling).It is assumed that the downlink full power of UMTS and non-UMTS standard is equal, and non-UMTS downlink is full Power emission (i.e. all power are all applied on the RB of scheduling).In this way, the RB number of scheduling is smaller, can be obtained on the RB of scheduling The signal-to-noise ratio obtained is higher, as shown in figure 19, the PSD on the RB for PSD and the LTE scheduling that Figure 19 is UMTS in the embodiment of the present invention Schematic diagram, wherein the LTE in Figure 19 can also be other non-UMTS standards.If UMTS is in addition to common signal channel, there are also 1 User carries out voice service, then considering interference of the UMTS signal to LTE terminal, the completely overlapped 5MHz with UMTS frequency spectrum merely The maximum received signal to noise ratio that the LTE standard of system bandwidth can obtain is(25 RB of scheduling, I.e. using all RB), 11.4dB (10 RB of scheduling), 13.6dB (6 RB of scheduling), 18.4dB (2 RB of scheduling).

Therefore, the embodiment provided through the invention can be protected by limiting the RB number of non-UMTS standard scheduling Hinder the performance of non-UMTS standard.

In the case where agreement is supported, connect in order to enable the terminal of non-UMTS promotes itself using the predistortion information of base station The performance of the collection of letters number reduces UMTS signal and interferes non-UMTS terminal, in another embodiment provided by the invention, non-UMTS system The base station of formula can disappear the information of predistortion by broadcast, wireless heterogeneous networks (Radio Resource Control, RRC) Breath or Downlink Control Information (Downlink Control Information, DCI) are sent to the terminal of non-UMTS.Wherein, The information of predistortion includes scrambling code information (parameter of scrambling code and opposite offset), the SF of spreading code and the volume that UMTS cell uses Number, that is to say, that the terminal of non-UMTS can determine that base station is according to above-mentioned implementation by the information of the predistortion got S (n), the c used when progress predistortion including formula (1) in example₁(n)、c₂(n) the series of processes mode such as.But it is non- The terminal of UMTS is a that can not be determined in formula in above-described embodiment (1)₁、a₂'s.If the terminal of non-UMTS knows these letters It has been known that on which code channel it is oneself signal after breath, has not been the signal of oneself on which code channel.Therefore, it targetedly takes Received signal needed for terminal can be avoided out or part avoids interference, and improve performance.

How the terminal of non-UMTS takes out the baseband sampling frequency of required received signal and non-UMTS signal band in other words Width is related.For simplicity, the embodiment provided by the invention only provides sample frequency the adopting equal to UMTS as non-UMTS The THP terminal handler process of non-UMTS when sample frequency.

Consider additive white Gaussian noise (Additive White Gaussian Noise, AWGN) channel.The channel is single Diameter channel, and channel fading system is fixed as 1, i.e., does not decline.The terminal of non-UMTS is when SF UMTS chip is corresponding Between in interval the signal that receives be z (n), in which:

Z (n)=x (n)-a₁·c₁(n)·s(n)-a₂·c₂(n)·s(n)+b₁·c₁(n)·s(n)+b₂·c₂(n)·s (n)+w(n) (8)

Wherein, 0≤n≤SF-1.

Due in the embodiment it needs to be determined that continuous SF sampling is because base station, which carries out predistortion, is adopted every SF is a It is carried out on sample.Here SF be the spreading code that uses of UMTS it is final it is equivalent at SF, for example, meeting the (expansion of UMTS of condition The planning of frequency code, which ensure that, to be generally able to satisfy) two SF are that 256 spreading codes can the equivalent spreading code for being 128 at a SF.It should Embodiment can think that the SF for the spreading code that UMTS is used is 128, and the spread spectrum that two SF of UMTS actual use are 256 Code.The terminal of the non-UMTS of x (n) in formula (8) needs received signal-a₁·c₁(n)·s(n)-a₂·c₂(n)·s(n) It is the predistortion that base station carries out non-UMTS signal, b₁·c₁(n)·s(n)+b₂·c₂(n) s (n) is that base station is sent to UMTS The signal of terminal, w (n) are that the heat that the terminal of non-UMTS receives is made an uproar and adjacent area is interfered.It is still assumed that UMTS only makes in the embodiment With two code channels.

If base station is not by c₁(n)、c₂(n) terminal that non-UMTS is informed with s (n), then predistortion-a₁·c₁(n)·s (n)-a₂·c₂(n) s (n), be sent to the signal b of UMTS₁·c₁(n)·s(n)+b₂·c₂(n) s (n) and heat are made an uproar and adjacent area Interference w (n) can all influence the performance of the terminal of non-UMTS.

Assume base station by c in the embodiment₁(n)、c₂(n) terminal of non-UMTS is informed with s (n).In addition, this SF sampling Initial time (referring to the coordinate on the uppermost figure horizontal axis of Fig. 3) be also required to inform the terminal of non-UMTS or in advance agreement. The terminal of non-UMTS carries out Multipath searching (not having to carry out channel estimation) first as the terminal of UMTS, then solves for UMTS Despreading is disturbed, e is obtained₁, wherein

Wherein, y (n) is defined referring to the formula (1) in above-described embodiment in formula (9), also,

Similarly, e₂=0+SFb₂+0+w₂ (11)

Wherein,

In the embodiment terminal of non-UMTS will be received into signal as follows and subtracts projection:

By above-mentioned various it is found that under single diameter channel, only predistortion and heat are made an uproar and shadow is interfered in adjacent area after treatment The performance of the terminal of non-UMTS is rung, the UMTS signal of Base Transmitter will not influence the performance of the terminal of non-UMTS.It can be proved thatPower ratio w (n) power it is low, due to having cut making an uproar in two dimensions Sound component, so that the heat that the terminal of non-UMTS is subject to is made an uproar and the power of adjacent area interference can reduce.

Treatment process in the embodiment provided by the invention is first to find out to receive signal on the code channel that UMTS is used Then projection subtracts it from reception signal.Another way is directly to ask to receive signal on the code channel that UMTS is not used Projection.The terminal that non-UMTS can be reduced in this way is influenced by UMTS signal, and base station actively passes the information of predistortion Up to the terminal to non-UMTS, so that the performance of the terminal of non-UMTS is improved.

When UMTS signal and non-UMTS signal are sent by shared downstream spectrum, if the type of non-UMTS signal is more than One kind, in this case, in order to realize the shared of downstream spectrum, in another embodiment provided by the invention, in conjunction with above-mentioned Each embodiment is illustrated so that multiple non-UMTS standards share 5MHz downstream spectrum with UMTS standard as an example.

Figure 20 is the schematic diagram that multiple non-UMTS standards and UMTS share frequency spectrum in the embodiment of the present invention, as shown in figure 20, The block diagram of Figure 20 acceptance of the bid " non-UMTS standard " is possible to refer to the same standard, for example, " the non-UMTS standard in Figure 20 in left hand view 1 ", " non-UMTS standard 2 " and " non-UMTS standard 3 " can all be LTE.In Figure 20 the frequency spectrum of non-UMTS standard frequency direction not It is centainly tightly close to, centre can also have certain gap (i.e. protection band).Frequency range shared by non-UMTS standard is according to need It will can also be more slightly larger than 5MHz.It can be with more non-UMTS systems placed side by side among ellipsis expression in right figure Formula.When carrying out predistortion, base station will comprehensively consider multiple types.Specific processing method belongs to algorithmic issue.Each non-UMTS The bandwidth of standard is small, is conducive to improve received signal to noise ratio (may refer to Figure 19).

According to agreement, the frequency spectrum of UMTS signal is as shown in figure 18.But base station can be privately to letter when sending UMTS signal It number is filtered, its is made to occupy less bandwidth.Different from LTE, the information of UMTS is distributed across in whole bandwidth, is only sent The signal of a part of bandwidth not will cause information loss, but performance can decline.If LTE only transmitting portion subcarrier, does not send out Data receiver is also not restore not Chu Lai anyway on the subcarrier sent.Figure 21 is filtered UMTS and other standards Frequency spectrum share schematic diagram.In Figure 21 left hand view, the standard of non-UMTS passes through the frequency spectrum that filtering is conceded using UTMS.UMTS's Terminal still can receive UMTS signal according to agreement in 5MHz (really 4.68MHz) range.The signal of UMTS non-in this way is just The UE of UMTS can be interfered.(i.e. non-UMTS signal concedes the code that UMTS has been used by predistortion to the embodiment of the present invention Road) it can reduce interference of the non-UMTS signal to the UE of UMTS.Note that the embodiment of the present invention cannot avoid interfering completely, because One multipath channel was equivalent to the filtering of UMTS signal.The signal of non-UMTS standard is not by for compression bandwidth Filter, can only be with the UMTS signal alignment on a diameter.The predistortion of non-UMTS signal is on that diameter for alignment What UMTS signal carried out.In Figure 21 right part of flg, the non-UMTS standard having occupies UMTS and passes through the frequency spectrum that filtering is conceded, and not will receive The interference of UMTS signal；The frequency spectrum that the non-UMTS standard that has occupies has overlapping with the frequency spectrum that UMTS signal occupies, and will receive UMTS The interference of signal.

Assume that NR using the wave similar with existing LTE system when it should be noted that mentioning NR in above-described embodiment Shape, i.e., the waveform being made of several subcarriers.Different scenes are there is a possibility that with different waveforms.NR is also possible to using based on expansion The waveform of frequency code or scrambling code or similar spreading code or scrambling code (such as not being completely orthogonal between code and code).Use this kind of waveform (spreading code and scrambling code, or the code of completion similar functions will be met certain condition), NR may be with UMTS in a manner of " code point " Shared frequency spectrum.NR may not be completely orthogonal with the code that UMTS is used.At this moment, using spreading code or scrambling code or similar spreading code Or NR, UMTS of scrambling code and the frequency spectrum share of other standards it is as shown in figure 22, Figure 22 is that downstream spectrum is total in the embodiment of the present invention Enjoy schematic diagram.The first row can also arrange multiple non-UMTS standards as right figure in Figure 22 left hand view.This embodiment of the invention By using spreading code or scrambling code or the NR and UMTS of similar spreading code or scrambling code, UMTS signal can be made to account for non-UMTS signal With the identical bandwidth in identical or part.

In order to elaborate the execution process of network equipment side in above-described embodiment, in another embodiment provided by the invention In, in conjunction with the various embodiments described above, a kind of UMTS downstream spectrum sharing method is additionally provided, as shown in fig. 23 a, this method can wrap Include following steps:

In step s 110, the network equipment by downlink UMTS spread spectrum code resources to be shared be divided into the first downlink resource and Second downlink resource.

In the step s 120, the network equipment sends non-UMTS signal to be sent by the second downlink resource.

Wherein, the first downlink resource is for sending UMTS signal, and the second downlink resource is for sending non-UMTS signal.

Since UMTS signal and non-UMTS signal use the 5MHz bandwidth spectrum of downlink UMTS system to be shared simultaneously, because This, the network equipment can determine which is for sending UMTS letter in downlink UMTS spread spectrum code resources to be shared first in embodiment Number, then other spread spectrum code resources avoid non-UMTS signal and UMTS signal from using identical expansion for sending non-UMTS signal Frequency code resource influences the transmission of signal.In addition, the network equipment that this embodiment of the invention is related to, can be and have while sending out Send the base station of UMTS signal and non-UMTS signal.UMTS signal can be sent by the first downlink resource in this way, non-UMTS signal It can be very good to send by the second downlink resource.

In order to avoid UMTS signal and non-UTMS signal are made when being sent by downlink UMTS spread spectrum code resources to be shared At interference, the embodiment of the present invention can also to non-UMTS signal carry out predistortion processing.Therefore, provided by the invention another In embodiment, as the refinement of Figure 23 A method, in Figure 23 B, step S120 can also include the following steps:

In step S1211, the network equipment handles non-UMTS signal to be sent by predistortion；

In step S1212, predistortion treated non-UMTS signal is passed through the second downlink resource and sent by the network equipment.

When UMTS signal and non-UMTS signal share the 5MHz bandwidth spectrum of downlink UMTS system, in order to avoid non-UMTS Interference between signal and UMTS signal, illustratively, for the terminal of UMTS when receiving UMTS signal, the terminal of UMTS will not be by To the interference of non-UMTS signal, and the terminal of non-UMTS not will receive the interference of UMTS signal when receiving non-UMTS signal, It needs to carry out predistortion processing to non-UMTS signal in the embodiment of the present invention, so that will not between non-UMTS signal and UMTS signal Relevant interference, terminal is available to be properly received UMTS signal or non-UMTS signal, guarantees communication quality.

In order to elaborate the network equipment how by downlink UMTS spread spectrum code resources to be shared be divided into the first downlink money Source and the second downlink resource, as the refinement of Figure 23 A method, in another embodiment provided by the invention, as shown in figure 24, step Rapid S110 can with the following steps are included:

In step S111, the network equipment obtains the spreading code that UMTS signal uses.

In step S112, the spread spectrum that the network equipment uses UMTS signal, and will be to be shared as the first downlink resource Downlink UMTS spread spectrum code resources in resource in addition to the spread spectrum that UMTS signal uses as the second downlink resource.

In the embodiment, since the network equipment is by obtaining the spreading code that uses of UMTS signal, wherein the value can not It is only code channel number, can also includes the value of current time code channel.In addition, it is necessary to explanation, the first downlink resource and the Two downlink resources spreading factor SF having the same.

Since UMTS signal and non-UMTS signal share the 5MHz bandwidth spectrum of downlink UMTS system, the embodiment is by UMTS The priority of signal is higher than non-UMTS signal, and after UMTS signal determines and occupies shared downstream spectrum code channel, the network equipment is obtained The code channel for taking UMTS signal to occupy, in order to avoid the code channel that non-UMTS signal uses, the code that the network equipment occupies UMTS signal Road as the first downlink resource, and by downlink UMTS spread spectrum code resources to be shared except UMTS signal occupy code channel in addition to Code channel is as the second downlink resource.And the first downlink resource is used to send UMTS signal, the second downlink resource is used to send Non- UMTS signal.

In order to elaborate the network equipment how by non-UMTS signal progress predistortion processing to be sent, as Figure 23 A The refinement of method, in another embodiment provided by the invention, as shown in figure 25, step S120 can also include the following steps:

In step S121, the network equipment obtains UMTS signal to be sent to be made using quantity m, the UMTS signal of spreading code Scrambling code and the equivalent minimal frequency spreading factor SF of spreading code.

It needs to be determined that continuous SF sampling is because it is in every SF sampling that base station, which carries out predistortion, in the embodiment It carries out.Here SF be the spreading code that uses of UMTS it is final it is equivalent at SF, for example, meeting the (spreading code of UMTS of condition Planning ensure that generally be able to satisfy) two SF are that 256 spreading codes can the equivalent spreading code for being 128 at a SF.The implementation Example can think that the SF for the spreading code that UMTS is used is 128, and the spreading code that two SF of UMTS actual use are 256.

In step S122, the network equipment carries out predistortion processing to the baseband sampling signal of non-UMTS, obtains predistortion Non- UMTS signal y (n) afterwards.

Above-mentioned formula (1) and its corresponding embodiment are referred to, the network equipment carries out the place of predistortion to non-UMTS signal Which is not described herein again for reason mode, refers to the description in above-described embodiment.

In step S123, the network equipment sends y (n) by the second downlink resource.

It should be noted that in the baseband sampling frequency of UMTS and the equal baseband sampling frequency of non-UMTS, Ke Yizhi It connected the embodiment and predistortion processing is carried out to non-UMTS signal.In addition, the network equipment adopts the base band of non-UMTS in Fig. 3 The processing of sample signal subsection.

In another embodiment provided by the invention, if the baseband sampling frequency of the non-UMTS is less than the UMTS's Baseband sampling frequency, the network equipment is to the baseband signal over-sampling of non-UMTS, so that the baseband sampling frequency and UMTS of non-UMTS Baseband sampling frequency it is equal, obtain the non-UMTS signal to be sent, and according to the predistortion provided in above-described embodiment Processing mode handles non-UMTS information.

When the baseband sampling frequency of non-UMTS is equal greater than the baseband sampling frequency of UMTS, provided by the invention another In embodiment, as the refinement of Figure 23 A method, as shown in figure 26, step S120 can also include the following steps:

In step S124, the network equipment obtains the corresponding first non-UMTS letter of non-UMTS subcarrier in UMTS reception bandwidth Number.

In step s 125, the network equipment obtains the sampled value of the first non-UMTS signal.

The network equipment is that first have discrete signal (signal after counterpart terminal sampling), is obtained after D/A (digital-to-analogue conversion) transformation Analog signal.Terminal is that first have analog signal, and discrete signal (signal after sampling) is obtained after sampling.

Wherein, the sampled value of the first non-UMTS signal is the first non-UMTS sampled signal, the sampling of the first non-UMTS signal The sample frequency of value is the baseband sampling frequency of UMTS signal.

In step S126, the first non-UMTS sampled signal is carried out predistortion processing by the network equipment, and it is non-to obtain first UMTS distorted signal.

In step S127, the first non-UMTS distorted signal is carried out up-sampling treatment by the network equipment, and it is non-to obtain first UMTS up-samples signal.

In step S128, the network equipment is by the first non-UMTS up-sampling signal plus second other than UMTS reception bandwidth Non- UMTS signal.

Referring to Figure 17, the first non-UMTS signal is equivalent to non-UMTS baseband sampling frequency in Figure 17 and is equal to UMTS baseband sampling At this moment the case where when frequency, can carry out at predistortion non-UMTS signal by the embodiment including above-mentioned (1) including formula Then the non-UMTS signal of predistortion after up-sampling is sent to by reason plus the second non-UMTS signal other than UMTS reception bandwidth CPRI, wherein it is non-greater than 3.84MHz that the second non-UMTS signal other than UMTS reception bandwidth is equivalent to sample frequency in Figure 17 UMTS signal.Referring specifically to Fig. 7 and Figure 17 and itself and various corresponding embodiments, it is not described herein.

When the baseband sampling frequency of non-UMTS is equal greater than the baseband sampling frequency of UMTS, provided by the invention another In embodiment, as the refinement of Figure 23 A method, as shown in figure 27, step S120 can also include the following steps:

In step S1291, the network equipment carries out down-sampled processing to non-UMTS signal, obtains the down-sampled signal of non-UMTS, The sample frequency of the non-down-sampled signal of UMTS is equal to the sample frequency of UMTS baseband sampling signal.

In step S1292, the network equipment obtains the down-sampled preceding distortion sequence of non-UMTS signal.

Wherein, the network equipment obtains the distortion sequence of non-UMTS signal, is the distortion sequence before non-UMTS signal is down-sampled, The distortion sequence is difference of the non-UMTS signal between the sequence after the sequence and predistortion before predistortion.Can specifically it pass through The corresponding embodiment of above-mentioned Fig. 9 and Fig. 9 can calculate the distortion sequence, and which is not described herein again.

In step S1293, non-UMTS signal is subtracted distortion sequence by the network equipment, the non-UMTS letter after obtaining predistortion Number.

Referring to the corresponding above-described embodiment of Fig. 9 and Fig. 9, by comprehensively considered LTE or NR all subcarriers (no matter Whether fall in the receiving filters bandwidth of the UE of UMTS), and strictly make non-UMTS signal and UMTS signal in orthogonal.In this way, When channel is single diameter and UMTS and non-UMTS signal co-sited emits, which can obtain accurate orthogonal effect, i.e., The terminal of UMTS not will receive the interference of the non-UMTS signal such as LTE or NR.

In addition, in another embodiment provided by the invention, when UMTS signal and non-UMTS signal are emitted by co-sited, The network equipment sends UMTS signal or non-UMTS signal by mutiple antennas respectively, and each antenna is sent identical in mutiple antennas UMTS or non-UMTS signal.

Wherein, the network equipment sends the antenna amount and send the antenna amount that non-UMTS signal uses that UMTS signal uses It is identical.

When UMTS signal and non-UMTS signal are emitted by co-sited, the network equipment is by default emission filter to non- UMTS signal is handled, and default emission filter is identical as the emission filter used when handling UMTS signal.

In embodiment provided by the invention, the transmitting antenna that different numbers can be used in the signal of different systems is launched It goes, and the signal of the small standard of transmitting antenna number is replicated the antenna that the standard that several parts take more than transmitting antenna number uses.It is multiple Normalized emission power is needed when processed.Illustratively, standard 1 sends out a and b in two antennas respectively, and standard 2 is in four antennas Hair.Then standard 1 is sent out a/sqrt (2) respectively in four antennas, a/sqrt (2), b/sqrt (2), b/sqrt (2).The present invention is real It applying example to be not limited to this, a, b/sqrt (3), b/sqrt (3) can also be sent out respectively, b/sqrt (3) can also send out a/sqrt (3), A/sqrt (3), a/sqrt (3), b.

As the refinement of Figure 23 A method, in another embodiment provided by the invention, as shown in figure 28, this method may be used also To include the following steps:

In step s 130, the network equipment sends predistortion information to terminal.

Wherein, predistortion information is used to indicate terminal and receives non-UMTS signal, and predistortion information includes: the small of UMTS signal The SF and number of scrambling code information and spreading code that area uses.

UMTS downstream spectrum sharing method provided in an embodiment of the present invention shares UMTS in UMTS system and non-UMTS system In system when the frequency spectrum of the last one 5MHz, UMTS standard signal and non-is sent by the frequency spectrum of the 5MHz simultaneously in the network equipment When UMTS standard signal, it can be carried out at predistortion in such a way that predistortion is handled to sent non-UMTS standard signal Reason, so that the non-UMTS signal after predistortion is avoided when being sent with UMTS signal by the frequency spectrum of shared 5MHz Interference between UMTS signal and non-UMTS signal, and then improve communication quality.

By the description of above embodiment of the method, it is apparent to those skilled in the art that the present invention is real Applying example can realize by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but many situations It is lower the former be more preferably embodiment.Based on this understanding, the technical solution of the embodiment of the present invention is substantially in other words to existing The part for having technology to contribute can be embodied in the form of software products, which is stored in one and deposits In storage media, including some instructions are used so that a computer equipment (can be personal computer, server or network Equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention.And storage medium above-mentioned includes: read-only The various media that can store program code such as memory (ROM), random access memory (RAM), magnetic or disk.

In addition, the embodiment of the invention also provides a kind of network equipments, such as Figure 29 as the realization to the various embodiments described above Shown, the network equipment may include: processor 10 and communication interface 20, and the network equipment can also include memory 30, memory 30 computer instruction for being executed needed for storage processor 10, wherein

Processor 10, for downlink UMTS spread spectrum code resources to be shared to be divided into the first downlink resource and the second downlink Resource, first downlink resource is for sending UMTS signal, and second downlink resource is for sending non-UMTS signal；

Communication interface 20, for sending non-UMTS signal to be sent by the second downlink resource.

In another embodiment provided by the invention, processor 10, be also used to obtain spreading code that UMTS signal uses and The value of scrambling code；

Processor 10, the code channel for being also used to occupy UMTS signal is as the first downlink resource, and by downlink to be shared Code channel in UMTS spread spectrum code resources in addition to the code channel that UMTS signal occupies is as the second downlink resource.

Specifically it may refer to the corresponding embodiment of Figure 23 A and Figure 23 A, which is not described herein again.

In another embodiment provided by the invention, the processor, being also used to the network equipment will be to be sent non- UMTS signal is handled by predistortion；

Specifically it may refer to Figure 23 B and corresponding embodiment, which is not described herein again.

In another embodiment provided by the invention, processor is also used to obtain the spreading code and disturb that UMTS signal uses The value of code；

Processor, the spreading code for being also used to use UMTS signal is as the first downlink resource；

Communication interface, be also used to remove in downlink UMTS spread spectrum code resources to be shared the spreading code that uses of UMTS signal it Outer resource is as the second downlink resource.

Specifically it may refer to the corresponding embodiment of Figure 24 and Figure 24, which is not described herein again.

In another embodiment provided by the invention, processor 10 is also used to obtain UMTS signal to be sent and uses expansion The quantity m of frequency code, the equivalent minimal frequency spreading factor SF of the scrambling code and spreading code that the UMTS signal uses；

Processor 10 is also used to carry out predistortion processing by baseband sampling signal of following formula to non-UMTS, obtain Non- UMTS signal y (n) after predistortion:

Wherein, y (n) indicates the expansion that the non-UMTS signal after predistortion is SF in any one spreading factor of UMTS signal Value in the frequency code duration；X (n) indicates value of the baseband sampling signal of non-UMTS within the duration；c_i(n) it indicates The spreading code of UMTS signal, a_iPass throughIt obtains, s (n) indicates that the scrambling code of UMTS signal exists Value in duration；1≤i≤m, m < SF, 0≤n≤SF-1；

Communication interface 20 is also used to send y (n) by the second downlink resource.

Wherein, the baseband sampling frequency of UMTS and the baseband sampling frequency of non-UMTS are equal.

Specifically it may refer to the corresponding embodiment of Figure 25 and Figure 25, which is not described herein again.

In another embodiment provided by the invention, processor 10 is also used to be less than in the baseband sampling frequency of non-UMTS When the baseband sampling frequency of UMTS, to the baseband signal over-sampling of non-UMTS, so that the baseband sampling frequency and UMTS of non-UMTS Baseband sampling frequency it is equal, obtain non-UMTS signal to be sent.

In another embodiment provided by the invention, communication interface 20 is also used to obtain non-UMTS in UMTS reception bandwidth The corresponding first non-UMTS signal of subcarrier；

Processor 10, is also used to obtain the sampled value of the first non-UMTS signal, and the sampled value of the first non-UMTS signal is the One non-UMTS sampled signal, the sample frequency of the sampled value of the first non-UMTS signal are the baseband sampling frequency of UMTS signal；

Processor 10 is also used to the first non-UMTS sampled signal carrying out predistortion processing, obtains the first non-UMTS distortion Signal；

Processor 10 is also used to the first non-UMTS distorted signal carrying out up-sampling treatment, obtains adopting on the first non-UMTS Sample signal；

Processor 10 is also used to the first non-UMTS up-sampling signal plus the second non-UMTS other than UMTS reception bandwidth Signal.

Specifically it may refer to the corresponding embodiment of Figure 26 and Figure 26, which is not described herein again.

In another embodiment provided by the invention, processor 10 is also used to carry out down-sampled processing to non-UMTS signal, The down-sampled signal of non-UMTS is obtained, the sample frequency of the non-down-sampled signal of UMTS is equal to the sampling frequency of UMTS baseband sampling signal Rate；

Processor 10 is also used to obtain the down-sampled preceding distortion sequence of non-UMTS；

Processor 10, is also used to non-UMTS signal subtracting distortion sequence, the non-UMTS signal after obtaining predistortion.

Specifically it may refer to the corresponding embodiment of Figure 27 and Figure 27, which is not described herein again.

In another embodiment provided by the invention, when UMTS signal and non-UMTS signal are emitted by co-sited, communication Interface 20 is also used to send UMTS signal or non-UMTS signal by mutiple antennas respectively, and each antenna is sent in mutiple antennas Identical UMTS or non-UMTS signal；

In another embodiment provided by the invention, when UMTS signal and non-UMTS signal are emitted by co-sited, processing Device 10 is also used to handle non-UMTS signal by default emission filter, presets emission filter and processing UMTS letter Number when the emission filter that uses it is identical.

In another embodiment provided by the invention, communication interface 20 is also used to send predistortion information to terminal, pre- abnormal Become information and be used to indicate the non-UMTS signal of terminal reception, predistortion information includes: the scrambling code information that the cell of UMTS signal uses With the SF and number of spreading code.

Specifically it may refer to the corresponding embodiment of Figure 28 and Figure 28, which is not described herein again.

The network equipment provided in an embodiment of the present invention shares last in UMTS system in UMTS system and non-UMTS system When the frequency spectrum of a 5MHz, UMTS standard signal and non-UMTS standard signal are sent by the frequency spectrum of the 5MHz simultaneously in the network equipment When, predistortion processing can be carried out to sent non-UMTS standard signal in such a way that predistortion is handled, so that predistortion Non- UMTS signal afterwards avoids UMTS signal and non-UMTS when sending with UMTS signal by the frequency spectrum of shared 5MHz Interference between signal, and then improve communication quality.

In the above-described embodiments, can come wholly or partly by software, hardware, firmware or any combination thereof real It is existing.When implemented in software, it can entirely or partly realize in the form of a computer program product.The computer program Product includes one or more computer instructions.When loading on computers and executing the computer program instructions, all or It partly generates according to process or function described in the embodiment of the present invention.The computer can be general purpose computer, dedicated meter Calculation machine, computer network or other programmable devices.The computer instruction can store in computer readable storage medium In, or from a computer readable storage medium to the transmission of another computer readable storage medium, for example, the computer Instruction can pass through wired (such as coaxial cable, optical fiber, number from a web-site, computer, server or data center User's line (DSL)) 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 computer 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 It is magnetic medium, (for example, floppy disk, hard disk, tape), optical medium (for example, DVD) or semiconductor medium (such as solid state hard disk Solid State Disk (SSD)) etc..

It is understood that the embodiment of the present invention can be used in numerous general or special purpose computing system environments or configuration. Such as: personal computer, server computer, handheld device or portable device, laptop device, multicomputer system, base In the system of microprocessor, set top box, programmable consumer-elcetronics devices, network PC, minicomputer, mainframe computer, packet Include the distributed computing environment etc. of any of the above system or equipment.

The embodiment of the present invention can describe in the general context of computer-executable instructions executed by a computer, example Such as program module.Generally, program module include routines performing specific tasks or implementing specific abstract data types, program, Object, component, data structure etc..The embodiment of the present invention can also be practiced in a distributed computing environment, in these distributions It calculates in environment, by executing task by the connected remote processing devices of communication network.In a distributed computing environment, Program module can be located in the local and remote computer storage media including storage equipment.

It should be noted that, in this document, the relational terms of such as " first " and " second " or the like are used merely to one A entity or operation with another entity or operate distinguish, without necessarily requiring or implying these entities or operation it Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to Cover non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or setting Standby intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that There is also other identical elements in the process, method, article or apparatus that includes the element.

Those skilled in the art after embodiment, will readily occur to this hair after considering the specification and practice of the invention disclosed here Other embodiments of bright embodiment.This application is intended to cover the changes of any modification of the embodiment of the present invention, purposes or adaptability Change, these variations, uses, or adaptations follow the general principle of the embodiment of the present invention and including the embodiment of the present invention Undocumented common knowledge or conventional techniques in the art.The description and examples are only to be considered as illustrative, The true scope and spirit of the embodiment of the present invention are indicated by the following claims.

It should be understood that the embodiment of the present invention is not limited to the accurate knot for being described above and being shown in the accompanying drawings Structure, and various modifications and changes may be made without departing from the scope thereof.The range of the embodiment of the present invention is only by appended right It is required that limit.

Claims

1. a kind of UMTS downstream spectrum sharing method characterized by comprising

Downlink UMTS spread spectrum code resources to be shared are divided into the first downlink resource and the second downlink resource by the network equipment, described First downlink resource is for sending UMTS signal, and second downlink resource is for sending non-UMTS signal；

2. the method according to claim 1, wherein the network equipment passes through non-UMTS signal to be sent Second downlink resource is sent, comprising:

The network equipment handles non-UMTS signal to be sent by predistortion；

3. method according to claim 1 or 2, which is characterized in that the network equipment expands downlink UMTS to be shared Frequency code resource is divided into the first downlink resource and the second downlink resource, comprising:

The network equipment obtains the spreading code that the UMTS signal uses；

The spreading code that the network equipment uses the UMTS signal, and will be described to be shared as first downlink resource Downlink UMTS spread spectrum code resources in resource in addition to the spreading code that the UMTS signal uses provided as second downlink Source.

4. according to the method in claim 2 or 3, which is characterized in that the network equipment is by non-UMTS signal to be sent It is handled by predistortion, predistortion treated non-UMTS signal is passed through second downlink resource and sent out by the network equipment It send, comprising:

The network equipment obtains the quantity m that the UMTS signal to be sent uses spreading code, what the UMTS signal used Scrambling code and the equivalent minimal frequency spreading factor SF of the spreading code；

The network equipment carries out predistortion processing by baseband sampling signal of following formula to non-UMTS, after obtaining predistortion Non- UMTS signal y (n):

Wherein, y (n) indicates the expansion that the non-UMTS signal after predistortion is SF in any one spreading factor of the UMTS signal Value in the frequency code duration；X (n) indicates value of the baseband sampling signal of non-UMTS within the duration；c_i(n) Indicate the spreading code of UMTS signal, a_iPass throughIt obtains, s (n) indicates the UMTS signal Value of the scrambling code within the duration；1≤i≤m, m < SF, 0≤n≤SF-1；

The network equipment sends the y (n) by second downlink resource.

5. according to the method described in claim 4, it is characterized in that, the baseband sampling frequency of the UMTS is with the non-UMTS's Baseband sampling frequency is equal.

6. according to the method described in claim 4, it is characterized in that, the method also includes:

When the baseband sampling frequency of the non-UMTS is less than the baseband sampling frequency of the UMTS, the network equipment is to described The baseband signal over-sampling of non-UMTS, so that the baseband sampling frequency of the non-UMTS is equal with the baseband sampling frequency of UMTS, Obtain the non-UMTS signal to be sent.

7. according to the method described in claim 4, it is characterized in that, the network equipment passes through non-UMTS signal to be sent Predistortion processing, comprising:

The network equipment obtains the sampled value of the first non-UMTS signal, and the sampled value of the first non-UMTS signal is described the One non-UMTS sampled signal, the sample frequency of the sampled value of the first non-UMTS signal are the baseband sampling of the UMTS signal Frequency；

Described first non-UMTS sampled signal is carried out the predistortion processing by the network equipment, obtains the first non-UMTS distortion Signal；

Described first non-UMTS distorted signal is carried out up-sampling treatment by the network equipment, obtains the first non-UMTS up-sampling letter Number；

The network equipment believes the described first non-UMTS up-sampling signal plus the second non-UMTS other than UMTS reception bandwidth Number.

8. according to the method in claim 2 or 3, which is characterized in that the baseband sampling frequency of the non-UMTS is greater than described The baseband sampling frequency of UMTS, the method also includes:

The network equipment carries out down-sampled processing to the non-UMTS signal, obtains the down-sampled signal of non-UMTS, described non- The sample frequency of the down-sampled signal of UMTS is equal to the sample frequency of UMTS baseband sampling signal；

The non-UMTS signal is subtracted the distortion sequence by the network equipment, the non-UMTS letter after obtaining the predistortion Number.

9. method according to claim 1, which is characterized in that emitted in the UMTS signal and non-UMTS signal by co-sited When, the network equipment passes through mutiple antennas respectively and sends the UMTS signal or the non-UMTS signal, the multiple antenna In each antenna send identical UMTS or non-UMTS signal；

Wherein, the network equipment sends the antenna amount and send what the non-UMTS signal used that the UMTS signal uses Antenna amount is identical.

10. the method according to claim 1, wherein passing through co-sited in the UMTS signal and non-UMTS signal When transmitting, the network equipment is handled the non-UMTS signal by default emission filter, the default transmitting filter Wave device is identical as the emission filter used when handling the UMTS signal.

11. according to the method described in claim 2, it is characterized in that, the method also includes:

The network equipment sends predistortion information to terminal, and it is described non-that the predistortion information is used to indicate the terminal reception UMTS signal, the predistortion information include: the SF and volume of scrambling code information and spreading code that the cell of the UMTS signal uses Number.

12. a kind of network equipment characterized by comprising

Processor, for downlink UMTS spread spectrum code resources to be shared to be divided into the first downlink resource and the second downlink resource, First downlink resource is for sending UMTS signal, and second downlink resource is for sending non-UMTS signal；

13. the network equipment according to claim 12, which is characterized in that

The processor is also used to the network equipment and handles non-UMTS signal to be sent by predistortion；

The communication interface, is also used to predistortion treated non-UMTS signal passing through second downlink resource and sends.

14. the network equipment according to claim 12 or 13, which is characterized in that

The processor is also used to obtain the spreading code that the UMTS signal uses；

The communication interface is also used to remove what the UMTS signal used in the downlink UMTS spread spectrum code resources to be shared Resource except spreading code is as second downlink resource.

15. the network equipment described in 3 or 14 according to claim 1, which is characterized in that

The processor, is also used to obtain the quantity m that the UMTS signal to be sent uses spreading code, and the UMTS signal makes Scrambling code and the equivalent minimal frequency spreading factor SF of the spreading code；

The processor is also used to carry out predistortion processing by baseband sampling signal of following formula to non-UMTS, obtain pre- Non- UMTS signal y (n) after distortion:

16. the network equipment according to claim 15, which is characterized in that the baseband sampling frequency of the UMTS with it is described non- The baseband sampling frequency of UMTS is equal.

17. the network equipment according to claim 15, which is characterized in that

The processor is also used to when the baseband sampling frequency of the non-UMTS is less than the baseband sampling frequency of the UMTS, To the baseband signal over-sampling of the non-UMTS, so that the baseband sampling frequency of the baseband sampling frequency of the non-UMTS and UMTS It is equal, obtain the non-UMTS signal to be sent.

18. the network equipment according to claim 15, which is characterized in that

The communication interface is also used to obtain the corresponding first non-UMTS signal of non-UMTS subcarrier in UMTS reception bandwidth；

The processor, is also used to obtain the sampled value of the first non-UMTS signal, and the sampled value of the first non-UMTS signal is The first non-UMTS sampled signal, the sample frequency of the sampled value of the first non-UMTS signal are the base of the UMTS signal Band sample frequency；

The processor is also used to the described first non-UMTS sampled signal carrying out the predistortion processing, it is non-to obtain first UMTS distorted signal；

The processor is also used to the described first non-UMTS distorted signal carrying out up-sampling treatment, obtain on the first non-UMTS Sampled signal；

The processor is also used to the described first non-UMTS up-sampling signal is non-plus second other than UMTS reception bandwidth UMTS signal.

19. the network equipment according to claim 12 or 13, which is characterized in that

The processor is also used to carry out down-sampled processing to the non-UMTS signal, obtains the down-sampled signal of non-UMTS, described The sample frequency of the non-down-sampled signal of UMTS is equal to the sample frequency of UMTS baseband sampling signal；

The processor is also used to the non-UMTS signal subtracting the distortion sequence, non-after obtaining the predistortion UMTS signal.

20. the network equipment according to claim 12, which is characterized in that pass through altogether in the UMTS signal and non-UMTS signal Stand transmitting when, the communication interface is also used to send the UMTS signal or the non-UMTS signal by mutiple antennas respectively, Each antenna sends identical UMTS or non-UMTS signal in the multiple antenna；

21. the network equipment according to claim 12, which is characterized in that pass through in the UMTS signal and non-UMTS signal When co-sited emits, the processor is also used to handle the non-UMTS signal by default emission filter, described pre- If emission filter is identical as the emission filter used when handling the UMTS signal.

22. the network equipment according to claim 12, which is characterized in that

The communication interface is also used to send predistortion information to terminal, and the predistortion information is used to indicate the terminal and connects The non-UMTS signal is received, the predistortion information includes: the scrambling code information and spreading code that the cell of the UMTS signal uses SF and number.