CN103813346A - Communication signal transmission method and apparatus, and system - Google Patents
Communication signal transmission method and apparatus, and system Download PDFInfo
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- CN103813346A CN103813346A CN201210442854.6A CN201210442854A CN103813346A CN 103813346 A CN103813346 A CN 103813346A CN 201210442854 A CN201210442854 A CN 201210442854A CN 103813346 A CN103813346 A CN 103813346A
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Abstract
The application provides a communication signal transmission method. The method comprises the following steps that: all to-be-modulated signals are obtained; according to a preset modulation signal condition, a modulation signal corresponding to each to-be-modulated signal is determined respectively, wherein the preset modulation signal condition is as follows: an absolute value of a difference of center frequencies of two adjacent modulation signals is less than the half of a bandwidth sum of two modulated signals corresponding to the two adjacent modulation signals; for each to-be-modulated signal, one corresponding modulation signal is used to modulate the to-be-modulated signal so as to obtain all modulated signals; and all the modulated signals are sent. According to the application, with the communication signal transmission method, the bearing capacity of the carrier wave can be increased at a frequency spectrum that is applied in advance, thereby increasing the telephone traffic. In addition, the application also provides a communication signal transmission apparatus and a system.
Description
Technical field
The present invention relates to network communications technology field, relate in particular to a kind of communication signal transmission method, Apparatus and system.
Background technology
In mobile communication system, the information data that wireless device will transmit is converted to wireless signal and transmits, and for example, base station forward emitted passage is responsible in the future the information data of automatic network side and is converted to wireless signal and sends to terminal.Base station forward emitted passage is made up of baseband module, middle radio-frequency module, power amplifier module, RF front-end module and antenna, information data from equipment side (as base station controller) arrives behind base station, successively after baseband module, middle radio-frequency module, power amplifier module, RF front-end module and antenna, send to terminal by the frequency spectrum of pre-first to file after being converted to wireless signal.
Take cdma system as example, at middle radio-frequency module, existing base station radio-frequency signal is all to require to transmit according to standard agreement (3GPP2 agreement), the bandwidth that is each frequency (to the numbering of carrier spectrum) is 1.23MHz, frequency interval 41(41*30kHz=1.23MHz), because the spectral bandwidth of the pre-first to file of telecom operators is limited, the quantity of the carrier wave that can carry on it is also limited, in the situation that bandwidth is fixing, the number of the frequency that can plan on it is also certain, and then, the telephone traffic that can carry on it is also just restricted, so, along with the increase of user's telephone traffic, how in the situation that bandwidth is fixing, the increase that realizes traffic bearing capacity in signal of communication transmitting procedure just becomes problem demanding prompt solution.
Summary of the invention
The embodiment of the present invention provides a kind of communication signal transmission method, Apparatus and system, to solve in the situation that bandwidth is fixing, increases the problem of telephone traffic.
A first aspect of the present invention provides a kind of communication signal transmission method, comprising:
Obtain each and treat tonal signal;
According to predefined modulation signal condition, determine and treat with each the modulation signal that tonal signal is corresponding respectively, described predefined modulation signal condition is, the absolute value of the difference of the centre frequency of adjacent two modulation signals be less than two modulated signals corresponding with described two adjacent modulation signals bandwidth and half;
Treat tonal signal for each, the application modulation signal corresponding with it modulated it, obtains each modulated signal;
Send described each modulated signal.
In the possible implementation of the first of first aspect, the described application modulation signal corresponding with treating tonal signal modulated and comprised it:
It is original 2 times by the described bandwidth modulation for the treatment of tonal signal.
In the possible implementation of the second of first aspect, send described each modulated signal and also comprise afterwards:
The modulated signal sending is carried out to D/A switch;
Converting described modulated signal after D/A switch to radiofrequency signal sends.
A second aspect of the present invention provides a kind of signal of communication transmitting device, comprising:
Acquisition module, determination module, modulation module and sending module, wherein,
Described acquisition module is used for obtaining each and treats tonal signal;
Described determination module is for the predefined modulation signal condition of foundation, determine and treat with each the modulation signal that tonal signal is corresponding respectively, described predefined modulation signal condition is, the absolute value of the difference of the centre frequency of adjacent two modulation signals be less than two modulated signals corresponding with described two modulation signals bandwidth and half;
Described modulation module for apply with each treat modulation signal that tonal signal is corresponding to described each treat that tonal signal modulates, obtain each modulated signal;
Described sending module is used for sending described each modulated signal.
In the possible implementation of the first of second aspect, it is original 2 times by the described bandwidth modulation for the treatment of tonal signal that described modulation module is used for.
In the possible implementation of the second of the second fermentation, also comprise:
D/A converter, for carrying out D/A switch to the modulated signal sending;
Radio frequency modular converter, sends for converting described modulated signal after D/A switch to radiofrequency signal.
A third aspect of the present invention provides a kind of signal of communication transmitting device, comprising:
At least one processor, it is configured to:
Obtain each and treat tonal signal;
According to predefined modulation signal condition, determine and treat with each the modulation signal that tonal signal is corresponding respectively, described predefined modulation signal condition is, the absolute value of the difference of the centre frequency of adjacent two modulation signals be less than two modulated signals corresponding with described two adjacent modulation signals bandwidth and half;
Treat tonal signal for each, the application modulation signal corresponding with it modulated it, obtains each modulated signal;
Send described each modulated signal;
Memory with described at least one processor coupling.
A fourth aspect of the present invention provides a kind of communication system, comprises signal of communication transmitting device as above.
A kind of communication signal transmission method that the embodiment of the present invention provides, Apparatus and system, in the time treating tonal signal and modulate, the absolute value of the difference of the centre frequency of adjacent two modulation signals be less than two modulated signals corresponding with described two adjacent modulation signals bandwidth and half, so in the time modulated signal being combined into a road signal and transmitting, between two adjacent modulated signals, there is certain spectrum overlapping, the described shared total bandwidth of each modulated signal is reduced, and then in the situation that bandwidth is fixing, can on the frequency spectrum of pre-first to file, increase the bearing capacity of carrier wave, thereby increase telephone traffic.
Accompanying drawing explanation
Fig. 1 is the flow chart of a kind of communication signal transmission method of providing of the embodiment of the present application;
Fig. 2 is the structural representation of a kind of signal of communication transmitting device of providing of the embodiment of the present application;
Fig. 3 is the structural representation of the another kind of signal of communication transmitting device that provides of the embodiment of the present application;
The structural representation of another signal of communication transmitting device that Fig. 4 provides for the embodiment of the present application;
Fig. 5 is the distribution schematic diagram of the frequency that can carry on fixed-bandwidth in prior art;
The distribution schematic diagram of the frequency that can carry on the fixed-bandwidth that Fig. 6 provides for the embodiment of the present application.
Embodiment
In order to make those skilled in the art can further understand feature of the present invention and technology contents, refer to following about detailed description of the present invention and accompanying drawing, accompanying drawing only provide with reference to and explanation, be not used for limiting the present invention.
Please refer to Fig. 1, the flow chart of a kind of communication signal transmission method that Fig. 1 provides for the embodiment of the present application, comprising:
Step S101: obtain each and treat tonal signal;
Step S102: according to predefined modulation signal condition, determine and treat with each the modulation signal that tonal signal is corresponding respectively, described predefined modulation signal condition is, the absolute value of the difference of the centre frequency of adjacent two modulation signals be less than two modulated signals corresponding with described two adjacent modulation signals bandwidth and half;
Unlike the prior art, in prior art, in the time modulated signal being combined into a road signal and transmitting, between two adjacent modulated signals, there is no spectrum overlapping,, the absolute value of the difference of the centre frequency of adjacent two modulation signals equal two modulated signals corresponding with described two adjacent modulation signals bandwidth and half.
Adjacent modulation signal can define like this: by the center frequency value of each modulation signal, by ascending order or descending, two modulation signals corresponding to so adjacent two center frequency value are two adjacent modulation signals.
For example, suppose that You San road (can also be two-way or more multichannel) treats tonal signal BS1, BS2, BS3 here; Yu Zhe tri-tunnels treat that the corresponding modulation signal of tonal signal is respectively MS1, MS2, MS3 respectively,, MS1 is corresponding with BS1, MS2 is corresponding with BS2, MS3 is corresponding with BS3, and wherein, the centre frequency of modulation signal MS1 is F1, the centre frequency of modulation signal MS2 is F2, and the centre frequency of modulation signal MS3 is F3; Suppose that three modulation signals are adjacent successively, modulation signal MS1 is adjacent with modulation signal MS2, and modulation signal MS2 is simultaneously adjacent with modulation signal MS3 with modulation signal MS1; The modulated signal corresponding with above-mentioned three road modulation signals is respectively YS1, YS2, YS3 respectively, be that modulation signal MS1 treats tonal signal BS1 and modulates, obtain modulated signal YS1, its bandwidth is A, modulation signal MS2 treats tonal signal BS2 and modulates, obtain modulated signal YS2, its bandwidth is B, and modulation signal M32 treats tonal signal BS3 and modulates, obtain modulated signal YS3, its bandwidth is C, so
In prior art, the centre frequency of adjacent two modulation signal MS1, MS2 meets following relation:
The centre frequency of adjacent two modulation signal MS2, MS3 meets following relation:
Be the absolute value of the difference of the centre frequency of adjacent two modulation signals equal two modulated signals corresponding with described two adjacent modulation signals bandwidth and half.
And in this programme, the centre frequency of adjacent two modulation signal MS1, MS2 meets following modulation signal condition:
The frequency of adjacent two modulation signal MS2, MS3 meets following modulation signal condition:
Be the absolute value of the difference of the centre frequency of adjacent two modulation signals be less than two modulated signals corresponding with described two adjacent modulation signals bandwidth and half.
Step S103: treat tonal signal for each, the application modulation signal corresponding with it modulated it, obtains each modulated signal;
Step S104: send described each modulated signal.
In the time sending described each modulated signal, each modulated signal can be sent respectively; Also each modulated signal can be combined into a road signal sends; Certainly, part modulated signal can also be combined into a road signal and send, all the other modulated signals send respectively, specifically select which kind of method to send and can select according to actual needs, are not specifically limited here.
Because the centre frequency of each modulated signal is the centre frequency of corresponding with it modulation signal, and the absolute value of the difference of the centre frequency of two adjacent modulated signals be less than with the bandwidth of described two adjacent modulated signals and half, so in the time each modulated signal being combined into a road signal and transmitting, there is certain spectrum overlapping between two adjacent modulated signals.
A kind of communication signal transmission method that the embodiment of the present application provides, in the time treating tonal signal and modulate, the modulation signal adopting meets following modulation signal condition: the absolute value of the difference of the centre frequency of adjacent two modulation signals be less than the modulated signal corresponding with described adjacent two modulation signals bandwidth and half, in the time each modulated signal being combined into a road signal and transmitting, between two adjacent modulated signals, there is certain spectrum overlapping, the described shared total bandwidth of each modulated signal is reduced, and then in the situation that bandwidth is fixing, can on the frequency spectrum of pre-first to file, increase the bearing capacity of carrier wave, thereby increase telephone traffic.
In above-described embodiment, to described in the time that tonal signal is modulated, can be original 2 times by the described bandwidth modulation for the treatment of tonal signal, the bandwidth of modulated signal is to treat 2 times of tonal signal bandwidth.
In above-described embodiment, after sending described each modulated signal, can also comprise:
The modulated signal sending is carried out to D/A switch;
Converting described modulated signal after D/A switch to radiofrequency signal sends.
Referring to Fig. 2, the structural representation of a kind of signal of communication transmitting device that Fig. 2 provides for the embodiment of the present application, comprising:
Sending module 204 is for sending described each modulated signal.
A kind of signal of communication transmitting device that the embodiment of the present application provides, in the time treating tonal signal and modulate, the modulation signal adopting meets following modulation condition: the absolute value of the difference of the centre frequency of two adjacent modulation signals be less than the modulated signal corresponding with described two adjacent modulation signals bandwidth and half, in the time modulated signal being combined into a road signal and transmitting, between two adjacent modulated signals, there is certain spectrum overlapping, the described shared total bandwidth of each modulated signal is reduced, and then in the situation that bandwidth is fixing, can on the frequency spectrum of pre-first to file, increase the bearing capacity of carrier wave, thereby increase telephone traffic.
Please refer to Fig. 3, the structural representation of the another kind of signal of communication transmitting device that Fig. 3 provides for the embodiment of the present application, on the basis of embodiment described in Fig. 2, a kind of signal of communication transmitting device that the embodiment of the present application provides also comprises:
D/A converter 301, and conversion module 302; Wherein,
D/A converter 301 is for carrying out D/A switch to the modulated signal sending;
Radio frequency converter module 302 sends for converting the modulated signal after D/A switch to radiofrequency signal.
Please refer to Fig. 4, the structural representation of another the signal of communication transmitting device providing for the embodiment of the present application, comprising:
At least one processor and the memory being coupled with described at least one processor;
Described at least one processor can be configured to:
Obtain each and treat tonal signal;
According to predefined modulation signal condition, determine and treat with each the modulation signal that tonal signal is corresponding respectively, described predefined modulation signal condition is, the absolute value of the difference of the centre frequency of adjacent two modulation signals be less than two modulated signals corresponding with described two adjacent modulation signals bandwidth and half;
Treat tonal signal for each, the application modulation signal corresponding with it modulated it, obtains each modulated signal;
Send described each modulated signal.
Concrete, the method that the invention described above embodiment discloses can be applied in first processor 401, is realized in other words by first processor 401.First processor 401 may be a kind of integrated circuit (IC) chip, has the disposal ability of signal.In implementation procedure, each step of said method can complete by the instruction of the integrated logic circuit of the hardware in first processor 401 or form of software.These instructions can be realized and control to coordinate by the second processor 402 wherein.The method disclosing for carrying out the embodiment of the present invention, above-mentioned processor can be general processor, digital signal processor (DSP), application-specific integrated circuit (ASIC) (ASIC), ready-made programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic device, discrete hardware components.Can realize or carry out disclosed each method, step and logic diagram in the embodiment of the present invention.General processor can be that microprocessor or this processor can be also the processors of any routine, decoder etc.Can directly be presented as that in conjunction with the step of the disclosed method of the embodiment of the present invention hardware processor is complete, or complete with the hardware in processor and software module combination.Software module can be positioned at random access memory ram, flash memory Flash Memory, read only memory ROM, in the storage medium of this area maturations such as programmable read only memory or electrically erasable programmable memory, register.This storage medium is positioned at memory 403, and the information in processor read memory 403 completes the step of said method in conjunction with its hardware.
In the disclosed a kind of communication system of the application, signal of communication transmitting device is signal of communication transmitting device as disclosed in above-described embodiment, the communication system providing due to the application has the as above disclosed signal of communication transmitting device of embodiment, therefore, the disclosed communication system of the application has the technique effect that above-mentioned signal of communication transmitting device has concurrently, repeats no more herein.
As an example of cdma system example, the application is elaborated below:
As shown in Figure 5, be the distribution schematic diagram of the frequency that can carry on fixed-bandwidth in prior art (5M bandwidth).
In cdma system; base station radio-frequency signal is all transferred to terminal by standard agreement (3GPP2 agreement) requirement; the bandwidth that is each frequency is 1.23MHz; frequency interval 41(41*30kHz=1.23MHz); for example, in CDMA 800M system, only has 5M bandwidth, according to standard agreement requirement; in this 5M bandwidth, only to carry 3 available frequencies (height frequency range two ends all need the boundary belt of reserved 625kHz), be respectively 1,019,/37,/78 3 frequencies.
The distribution schematic diagram of the frequency that can carry on the fixed-bandwidth (5M bandwidth) providing for the embodiment of the present application as shown in Figure 6;
For the ease of distinguishing frequency 991 and 1019, in the present embodiment, dot frequency 991, solid line represents frequency 1019;
Want it to carry out dilatation, allow in 5M bandwidth and can carry more frequency, from CDMA frequency distribution table in 3GPP2 agreement, 1019 frequencies also have 991 frequencies to use below, that is to say and can in this 5M bandwidth, increase by 991 these frequencies, according to this programme, can increase as follows by 991 these frequencies:
To 991 these frequencies corresponding in the time that tonal signal is modulated, the centre frequency f1 of the modulation signal corresponding with 991 these frequencies, with the absolute value of the difference of the centre frequency f2 of the modulation signal corresponding with 1019 these frequencies be less than the modulated signal that these two frequencies are corresponding bandwidth and half,
|f1-f2|<1.23MHz；
In the embodiment of the present application, because 1,019,/37,/78 3 frequencies are planned by standard agreement, so, only 991 frequencies and 1019 frequencies have spectrum overlapping, the centre frequency f1=869.04MHz of 991 frequencies, because the centre frequency of 1019 frequencies is f2=869.88MHz, therefore, in the present embodiment, Jiang tetra-road signals are combined into a road signal while transmitting, the spectrum overlapping of 991 frequencies and 1019 frequencies 390kHz, if base station equipment is supported the output of spectrum overlapping signal, just can adopt 991 frequencies to carry out dilatation, can find out from actual test data table (table 1) below, increase after 991 carrier waves, in forward power and the reverse essentially identical situation of RSSI, the number of users of access increases by 50%, reach dilatation, increase the object of telephone traffic.
Test data after table 1 CDMA 1019 & 991 frequency dilatations
Wherein, RSSI(Received Signal Strength Indicator) be the intensity indication of the terminal signaling of base station reception.
Terminal Tx refers to terminal transmit power;
In the time that the lap of adjacent carrier is more, can reduce by filter equalization technology the phase mutual interference of two intercarriers.
In the present embodiment, only that 991 and 1019 these two frequencies have been carried out to spectrum overlapping, certainly, in order to increase more frequency on fixed-bandwidth, can also, in the time of planning frequency, will between two frequencies of more heterogeneous neighbour, carry out spectrum overlapping, for two adjacent frequencies, its spectrum overlapping part is not limited in 390kHz, can also be other value, as following table (table 2) has been listed the part relations table of comparisons of capacity and lap:
Table 2
Wherein, overlapping frequency is the spectrum overlapping amount of adjacent two frequencies;
Single-frequency point capacity be adjacent two frequencies overlapping after, the capacity of each frequency, the ratio of the capacity of single frequency point capacity of single frequency point when thering is no spectrum overlapping when it refers to spectrum overlapping.
Two frequency relative capacities be adjacent two frequencies overlapping after, two capacity that frequency is total.
Hence one can see that, although two frequencies overlapping after the capacity of each frequency decline to some extent because spectrum overlapping makes the quantity increase of frequency, therefore total capacity increases when thering is no spectrum overlapping to some extent.
That is to say, planning part frequency or also do not planning on the frequency spectrum resource of frequency, while planning frequency on the frequency spectrum resource that carries out remainder or on brand-new frequency spectrum resource, can make to have spectrum overlapping between any two adjacent frequencies according to this programme, and then increase the bearing capacity of frequent resource.
The communication signal transmission method that application the embodiment of the present application provides, in increasing carriers carry amount, terminal is unaffected in the compatibility of frequency, and the KPI index of network side is also substantially unaffected.
In present specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment, between each embodiment identical similar part mutually referring to.For the disclosed device of embodiment, because it corresponds to the method disclosed in Example, so description is fairly simple, relevant part illustrates referring to method part.
The software module that the method for describing in conjunction with embodiment disclosed herein or the step of algorithm can directly use hardware, processor to carry out, or the combination of the two is implemented.To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the present invention.To be apparent for those skilled in the art to the multiple modification of these embodiment, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, above-described embodiment of the present invention, does not form limiting the scope of the present invention.Any modification of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in claim protection range of the present invention.
Claims (8)
1. a communication signal transmission method, is characterized in that, comprising:
Obtain each and treat tonal signal;
According to predefined modulation signal condition, determine and treat with each the modulation signal that tonal signal is corresponding respectively, described predefined modulation signal condition is, the absolute value of the difference of the centre frequency of adjacent two modulation signals be less than two modulated signals corresponding with described two adjacent modulation signals bandwidth and half;
Treat tonal signal for each, the application modulation signal corresponding with it modulated it, obtains each modulated signal;
Send described each modulated signal.
2. method according to claim 1, is characterized in that, the described application modulation signal corresponding with treating tonal signal modulated and comprised it:
It is original 2 times by the described bandwidth modulation for the treatment of tonal signal.
3. method according to claim 1 and 2, is characterized in that, sends described each modulated signal and also comprises afterwards:
The modulated signal sending is carried out to D/A switch;
Converting described modulated signal after D/A switch to radiofrequency signal sends.
4. a signal of communication transmitting device, is characterized in that, comprising:
Acquisition module, determination module, modulation module and sending module, wherein,
Described acquisition module is used for obtaining each and treats tonal signal;
Described determination module is for the predefined modulation signal condition of foundation, determine and treat with each the modulation signal that tonal signal is corresponding respectively, described predefined modulation signal condition is, the absolute value of the difference of the centre frequency of adjacent two modulation signals be less than two modulated signals corresponding with described two modulation signals bandwidth and half;
Described modulation module for apply with each treat modulation signal that tonal signal is corresponding to described each treat that tonal signal modulates, obtain each modulated signal;
Described sending module is used for sending described each modulated signal.
5. device according to claim 4, is characterized in that, it is original 2 times by the described bandwidth modulation for the treatment of tonal signal that described modulation module is used for.
6. according to the device described in claim 4 or 5, it is characterized in that, also comprise:
D/A converter, for carrying out D/A switch to the modulated signal sending;
Radio frequency modular converter, sends for converting the modulated signal after D/A switch to radiofrequency signal.
7. a communication system, is characterized in that, comprises the signal of communication transmitting device as described in claim 4-6 any one.
8. a signal of communication transmitting device, is characterized in that, comprising:
At least one processor, it is configured to:
Obtain each and treat tonal signal;
According to predefined modulation signal condition, determine and treat with each the modulation signal that tonal signal is corresponding respectively, described predefined modulation signal condition is, the absolute value of the difference of the centre frequency of adjacent two modulation signals be less than two modulated signals corresponding with described two adjacent modulation signals bandwidth and half;
Treat tonal signal for each, the application modulation signal corresponding with it modulated it, obtains each modulated signal;
Send described each modulated signal;
Memory with described at least one processor coupling.
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| CN1426171A (en) * | 2001-12-12 | 2003-06-25 | 株式会社Ntt都科摩 | Radio communication method and its device |
| WO2008019529A1 (en) * | 2006-08-09 | 2008-02-21 | Daoben Li | A method and system for frequency division multiplexing |
| CN101572683A (en) * | 2008-04-30 | 2009-11-04 | 华为技术有限公司 | Method, devices and system for orthogonal frequency division multiplexing |
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Application publication date: 20140521 |