CN102437988A - Method and device for utilizing frequency spectrum of digital radiated television - Google Patents
Method and device for utilizing frequency spectrum of digital radiated television Download PDFInfo
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Abstract
The invention provides a method for utilizing a frequency spectrum of a digital radiated television, which is characterized in that: orthogonal frequency division multiplexing (OFDM) carrier aggregation technique is used for aggregating usable frequency spectrums into an integral frequency spectrum which is used as a digital radiated television frequency spectrum bandwidth, and the aggregated bandwidth of each frequency spectrum and the frequency point are informed to a user equipment. The invention also provides a device for utilizing a frequency spectrum of the digital radiated television. Due to the adoption of the method and the device, more radiated television frequency spectrum resources can be effectively supplied to the digital radiated television, so the frequency spectrum resource which is allocated for the digital radiated television carries more radiated television programs, and the utilization rate of the frequency spectrum can be improved.
Description
Technical field
The present invention relates to the digital radio broadcast TV, more specifically, relate to a kind of frequency spectrum method for using and device that the OFDM carrier aggregation technology is applied to digital radio broadcast television network and broadcasting and television network of future generation.
Background technology
Development along with radio and television; Get into digital Age; The propagation of digital broadcasting-television signal is different fully with analog television broadcast signal; Analog television broadcast signal is analog television broadcast signal to be modulated on the radio frequency carrier wave send, and passes through certain at interval carrier frequency between the different channel with anti-tampering; Digital broadcast television then be carry out earlier the information source compressed encoding, again carry out the channel error correction coding, utilize digital modulation technique to realize frequency spectrum shift at last, will send in the transmission channel by the binary code stream that " 0 ", " 1 " sequence are formed and transmit.
Digital broadcast television and spectral bandwidth are closely related, in general, the digital radio broadcast television channel normally with 8M as transmission bandwidth, HDTV needs about 20M as transmission bandwidth.And divide at present be used in radio and television frequency spectrum some be used, cause partial frequency spectrum to be in discontinuous state.Along with the extensive use of digital TV in high resolution, and in broadcasting and television network of future generation, support wireless transmission and the access that One-to-All Broadcast and two-way interactive coexistence are used, more frequency spectrum used and have higher requirement that the nervous situation of frequency resource will more highlight.
So, how to integrate frequency spectrum resource, use limited frequency spectrum resources to be used for the digital radio broadcast television spectrum effectively, be vital technical barrier to digital wireless communication and broadcasting engineering.
Summary of the invention
The object of the present invention is to provide a kind of frequency spectrum method for using and device of digital radio broadcast TV; Can for the digital radio broadcast TV more multicast television spectrum resource be provided effectively; The frequency spectrum resource that makes branch be used in the digital radio broadcast TV carries more broadcast TV program, improves the availability of frequency spectrum.
For solving above technical problem; The present invention provides a kind of frequency spectrum method for using of digital radio broadcast TV; Adopt the OFDM carrier aggregation technology to become overall spectrum to use spendable spectrum aggregating, and each spectral bandwidth, frequency point information that institute's polymerization is used are informed the use terminal according to digital radio broadcast television spectrum bandwidth.
Further; Said carrier aggregation process specifically comprises: the frequency spectrum that dispensing applications is used frequency spectrum in getting rid of of digital radio broadcast TV is aggregated into overall spectrum as digital radio broadcast television spectrum bandwidth, and each spectral bandwidth that the institute polymerization is used, frequency point information are as the important information transmission; The overall spectrum of polymerization is divided into different subcarriers according to the OFDM characteristic requirements, and digital radio broadcast television programme data flow point is fitted on the different subcarriers.
Further, said dispensing applications is one or more in following in the spectral bandwidth of digital radio broadcast TV: plurality of continuous frequency spectrum, some discontinuous frequency spectrums, continuous frequency spectrum and discontinuous frequency spectrum.
For solving above technical problem, the present invention also provides a kind of frequency spectrum method for using of digital radio broadcast TV, comprising:
Become overall spectrum as digital radio broadcast television spectrum bandwidth in the spectrum aggregating of digital radio broadcast TV dispensing applications;
The overall spectrum of polymerization is divided into different subcarriers according to the OFDM characteristic requirements;
Digital radio broadcast television programme data flow point is fitted on the different subcarriers.
Further, said method further comprises, each spectral bandwidth, frequency relevant information that institute's polymerization is used are transmitted as important information.
Further, said dispensing applications is one or more in following in the spectral bandwidth of digital radio broadcast TV: plurality of continuous frequency spectrum, some discontinuous frequency spectrums, continuous frequency spectrum and discontinuous frequency spectrum.
For solving above technical problem, the present invention also provides a kind of frequency spectrum operative installations of digital radio broadcast TV, comprising: the polymerization module, divide module, and distribution module,
Said polymerization module becomes overall spectrum as digital radio broadcast television spectrum bandwidth in the spectrum aggregating of digital radio broadcast TV dispensing applications;
Said division module is divided into different subcarriers with the overall spectrum of polymerization according to the OFDM characteristic requirements;
Said distribution module is fitted on digital radio broadcast television programme data flow point on the different subcarriers.
Further, said polymerization module is further informed the spendable spectral bandwidth of institute's polymerization, frequency relevant information and is used the terminal.
Further, said dispensing applications is one or more in following in the spectral bandwidth of digital radio broadcast TV: plurality of continuous frequency spectrum, some discontinuous frequency spectrums, continuous frequency spectrum and discontinuous frequency spectrum.
Compared with prior art; The frequency spectrum method for using and the device of digital radio broadcast TV provided by the invention adopt carrier aggregation technology that a continuous frequency spectrum or some discontinuous frequency spectrums are divided into a plurality of subcarriers according to the OFDM characteristic requirements, to make full use of the frequency spectrum resource that branch is used in radio and television; Reach the effect of spread-spectrum resource effectively; And the broadcast TV program data flow assigned on the different subcarriers, utilize the orthogonal property of OFDM subcarrier, thereby under limited frequency spectrum resources, carry more broadcast TV program; Reduce the phase mutual interference of broadcast TV program; Improve the availability of frequency spectrum greatly, make the OFDM carrier aggregation technology be applied to the digital radio broadcast television network better, and broadcasting and television network of future generation.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes a part of the present invention, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, does not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of the frequency spectrum method for using of a kind of digital radio broadcast TV provided by the invention;
Fig. 2 is the structural representation of the frequency spectrum operative installations of a kind of digital radio broadcast TV provided by the invention;
Fig. 3 is the spectrum aggregating sketch map that adopts carrier aggregation technology under a kind of continuous frequency spectrum provided by the invention;
Fig. 4 is the spectrum aggregating sketch map that adopts carrier aggregation technology under a kind of discontinuous frequency spectrum provided by the invention.
Embodiment
In order to make technical problem to be solved by this invention, technical scheme and beneficial effect clearer, clear,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
At present; It is continuous frequency that the frequency that is used for the digital radio broadcast television channel has part; It is discontinuous frequency that part is also arranged; Broadcasting as shown in table 1 and television waves band frequency are divided in the table, and the 223-443MHz of the 167-223MHz of VHF wave band, UHF wave band and the 443-870MHz of UHF wave band are continuous frequency spectrums; The frequency spectrum of the 167-223MHz of the 48.5-92MHz of VHF wave band and VHF wave band then is discontinuous frequency spectrum.
Also having demonstrated the frequency spectrum that is used for the digital radio broadcast television channel in the tv channel frequency table as shown in table 2 is continuous a bit, and some is discontinuous.
Table 1
Table 2
The OFDM technology is a kind of multi-carrier transmission technology, is characterized in that each subcarrier is mutually orthogonal, and the frequency spectrum after the band spectrum modulation can be overlapped, not only reduced the phase mutual interference between subcarrier, also improved the availability of frequency spectrum greatly.Carrier aggregation technology is to be a plurality of member carriers with a continuous frequency spectrum or some discontinuous spectrum division.
Technological thought of the present invention is to adopt the OFDM carrier aggregation technology to become overall spectrum to use according to digital radio broadcast television spectrum bandwidth spendable continuous frequency spectrum or some discontinuous spectrum aggregatings.
Since these branches be used in radio and television frequency spectrum some be used; Some is not used; Be used for the digital radio broadcast TV for making full use of frequency spectrum resource; The present invention provides a kind of frequency spectrum method for using of digital radio broadcast TV, through this method, gets rid of the frequency spectrum that has used; With spendable frequency spectrum adopt the OFDM carrier aggregation technology with these scattered frequency spectrums as a whole frequency spectrum use according to digital radio broadcast television spectrum bandwidth; And relevant informations such as each spectral bandwidth that the institute polymerization is used, frequency are as the important information transmission, use according to the coding of digital radio broadcast TV, modulation etc., to greatest extent usable spectrum are used for the digital radio broadcast TV.This method comprises:
Through the OFDM carrier aggregation technology; Become overall spectrum as digital radio broadcast television spectrum bandwidth in the spectrum aggregating of digital radio broadcast TV dispensing applications; And the spectral bandwidth that the institute polymerization is used, frequency relevant information are as the important information transmission; Inform and use the terminal, make at receiving terminal and when receiving, know employed spectrum information;
The overall spectrum of polymerization is divided into different subcarriers according to the OFDM characteristic requirements;
Digital radio broadcast television programme data flow point is fitted on the different subcarriers.
When the digital radio broadcast TV when distributing employed spectral bandwidth to be the plurality of continuous frequency spectrum; In order to utilize frequency spectrum resource better; In conjunction with the correlation technique of digital radio broadcast TV,, utilize the OFDM technical characterstic through carrier aggregation technology; The continuous frequency spectrum that dispensing applications is used frequency spectrum in getting rid of of digital radio broadcast TV is aggregated into overall spectrum as digital radio broadcast television spectrum bandwidth; And relevant informations such as the spectral bandwidth that the institute polymerization is used, frequency inform and use the terminal as the important information transmission, make at receiving terminal and when receiving, know employed spectrum information; The overall spectrum of polymerization is divided into different subcarriers according to the OFDM characteristic requirements, and digital radio broadcast television programme data flow point is fitted on the different subcarriers; Use according to the coding of digital radio broadcast TV, modulation etc.,, reach efficient use frequency spectrum resource and serve the digital radio broadcast TV so that more broadcast TV program to be provided.
Wherein, Carrier aggregation technology under the said continuous frequency spectrum is meant that working as the employed carrier frequency of digital radio broadcast TV is continuous carrier; Be one section continuous carrier frequency bandwidth promptly distributing to the employed frequency of digital radio broadcast TV; With these television channels employable frequency resource adopt continuous frequency spectrum carrier aggregation technology down to integrate unified use, bring into play the advantage of digital radio broadcast TV better.
When the digital radio broadcast TV when to distribute employed spectral bandwidth be some discontinuous frequency spectrums; Be used quite a few owing to be used for the frequency spectrum of digital radio broadcast TV, just there is more discrete frequency spectrum in the frequency spectrum that can be used for the digital radio broadcast TV so.In order to make full use of frequency spectrum resource better; Correlation technique in conjunction with the digital radio broadcast TV; Pass through carrier aggregation technology; Utilize the OFDM technical characterstic, the discontinuous frequency spectrum that dispensing applications is used frequency spectrum in getting rid of of digital radio broadcast TV is aggregated into overall spectrum as digital radio broadcast television spectrum bandwidth, and relevant informations such as each spectral bandwidth that the institute polymerization is used, frequency are as the important information transmission; Inform and use the terminal, make at receiving terminal and when receiving, know employed spectrum information; The overall spectrum of polymerization is divided into different subcarriers according to the OFDM characteristic requirements, and digital radio broadcast television programme data flow point is fitted on the different subcarriers; Use according to the coding of digital radio broadcast TV, modulation etc.,, reach efficient use frequency spectrum resource and serve the digital radio broadcast TV so that more broadcast TV program to be provided.
Wherein, the carrier aggregation technology under the said discontinuous frequency spectrum is meant that working as the employed carrier frequency of digital radio broadcast TV is discontinuous carrier frequency, is promptly distributing to the carrier frequency bandwidth of radiated television; Be discrete carrier frequency bandwidth; For bringing into play the advantage of digital radio broadcast TV better, rationally utilize frequency spectrum resource more, use carrier aggregation technology with they polymerizations these discrete frequency spectrums; With the unified frequency spectrum resource that uses, carry more broadcast TV program.
When the digital radio broadcast TV when distributing employed spectral bandwidth also to have discontinuous frequency spectrum for both there being continuous frequency spectrum; In order to make full use of frequency spectrum resource better; Correlation technique in conjunction with the digital radio broadcast TV; Pass through carrier aggregation technology; Utilize the OFDM technical characterstic, continuous frequency spectrum that can dispensing applications be used frequency spectrum in getting rid of of digital radio broadcast TV and discontinuous frequency spectrum are united aggregates into overall spectrum as digital radio broadcast television spectrum bandwidth, and relevant informations such as each spectral bandwidth that institute's polymerization is used, frequency are as the important information transmission; Inform and use the terminal, make at receiving terminal and when receiving, know employed spectrum information; The overall spectrum of polymerization is divided into different subcarriers according to the OFDM characteristic requirements, and digital radio broadcast television programme data flow point is fitted on the different subcarriers; Use according to the coding of digital radio broadcast TV, modulation etc.,, reach efficient use frequency spectrum resource and serve the digital radio broadcast TV so that more broadcast TV program to be provided.
As shown in Figure 2, the present invention provides a kind of frequency spectrum operative installations of digital radio broadcast TV, comprising: polymerization module 10, divide module 20, distribution module 30.
According to method of the present invention, can in the digital radio broadcast TV, utilize the broadcast television spectrum resource of having distributed efficiently.
To combine embodiment to specify execution mode of the present invention below, how the application technology means solve technical problem to the present invention whereby, and the implementation procedure of reaching technique effect can make much of and implement according to this.
Embodiment 1: the carrier aggregation technology under the continuous frequency spectrum is applied to the digital radio broadcast TV
As shown in Figure 3; Carrier frequency 1～carrier frequency n representes that branch is used in the continuous frequency spectrum of digital radio broadcast TV; For better frequency spectrum resource capable of using being applied to the digital radio broadcast TV,, utilize carrier aggregation technology in conjunction with the correlation technique of digital radio broadcast TV; These continuous frequency spectrums of carrier frequency 1～carrier frequency n that utilize the OFDM technology that branch is used in the digital radio broadcast TV are aggregated into overall spectrum and are used as digital radio broadcast television spectrum bandwidth; And relevant informations such as each spectral bandwidth that the institute polymerization is used, frequency inform and use the terminal as the important information transmission, make at receiving terminal and when receiving, know employed spectrum information; The overall spectrum of polymerization is divided into different subcarriers according to the OFDM characteristic requirements, and digital radio broadcast television programme data flow point is fitted on the different subcarriers; Use according to the coding of digital radio broadcast TV, modulation etc.,, reach efficient use frequency spectrum resource and serve the digital radio broadcast TV so that more broadcast TV program to be provided.
Scene one
In the VHF wave band; Being used to the digital radio broadcast TV band is continuous frequency range; But frequency spectrum and when being not enough to support that digital radiated television is professional separately; Through carrier aggregation technology utilize the OFDM technical characterstic with these spendable continuous frequency spectrums as a whole frequency spectrum use according to digital radio broadcast television spectrum bandwidth, be divided into the plurality of sub carrier wave according to the OFDM characteristic requirements, and the broadcast TV program data flow assigned on the different subcarriers; Use by the coding of digital radio broadcast TV, modulation etc. again; And relevant informations such as each spectral bandwidth that the institute polymerization is used, frequency inform and use the terminal as the important information transmission, make and when receiving terminal receives, know employed spectrum information.
Scene two
In the UHF wave band; Being used to the digital radio broadcast TV band is continuous frequency range; But frequency spectrum and when being not enough to support that digital radiated television is professional separately; Through carrier aggregation technology utilize the OFDM technical characterstic with these spendable continuous frequency spectrums as a whole frequency spectrum use according to digital radio broadcast television spectrum bandwidth, be divided into the plurality of sub carrier wave according to the OFDM characteristic requirements, the broadcast TV program data flow is assigned on the different subcarriers; Use by the coding of digital radio broadcast TV, modulation etc. again; And relevant informations such as each spectral bandwidth that the institute polymerization is used, frequency inform and use the terminal as the important information transmission, make and when receiving terminal receives, know employed spectrum information.
Scene three
In VHF wave band and the UHF wave band; The frequency range that is used for the digital radio broadcast TV that both are continuous; But frequency spectrum and when being not enough to support that digital radiated television is professional separately; Through carrier aggregation technology utilize the OFDM technical characterstic with these spendable continuous frequency spectrums as a whole frequency spectrum use according to digital radio broadcast television spectrum bandwidth, be divided into the plurality of sub carrier wave according to the OFDM characteristic requirements, the broadcast TV program data flow is assigned on the different subcarriers; Use by the coding of digital radio broadcast TV, modulation etc. again; And relevant informations such as the spectral bandwidth that the institute polymerization is used, frequency inform and use the terminal as the important information transmission, make and when receiving terminal receives, know employed spectrum information.
Scene four
At other frequency spectrum that is assigned with the wave band that is applied to the digital radio broadcast TV is continuous frequency spectrum; But frequency spectrum and when being not enough to support that digital radiated television is professional separately; Through carrier aggregation technology utilize the OFDM technical characterstic with these spendable continuous frequency spectrums as a whole frequency spectrum use according to digital radio broadcast television spectrum bandwidth; Be divided into the plurality of sub carrier wave according to the OFDM characteristic requirements; And the broadcast TV program data flow assigned on the different subcarriers, use by the coding of digital radio broadcast TV, modulation etc. again, and relevant informations such as each spectral bandwidth that institute's polymerization is used, frequency are as the important information transmission; Inform and use the terminal, make and when receiving terminal receives, know employed spectrum information.
Embodiment 2: the carrier aggregation technology under the discontinuous frequency spectrum is applied to the digital radio broadcast TV
The frequency spectrum that is used for the digital radio broadcast TV at present has been used quite a few, in order to make full use of frequency spectrum better, needs to get rid of the frequency spectrum that has used, and just there is more discontinuous frequency spectrum in the untapped frequency spectrum that can be used for the digital radio broadcast TV so.
As shown in Figure 4, carrier frequency 1～carrier frequency n representes that branch is used in the discontinuous frequency spectrum of digital radio broadcast TV.For better frequency spectrum resource capable of using being applied to the digital radio broadcast TV; Correlation technique in conjunction with the digital radio broadcast TV; Utilize carrier aggregation technology; Utilize the OFDM technical characterstic that these discontinuous frequency spectrums of carrier frequency 1～carrier frequency n that branch is used in the digital radio broadcast TV are aggregated into overall spectrum as digital radio broadcast television spectrum bandwidth; And relevant informations such as each spectral bandwidth that the institute polymerization is used, frequency inform and use the terminal as the important information transmission, make at receiving terminal and when receiving, know employed spectrum information; The overall spectrum of polymerization is divided into different subcarriers according to the OFDM characteristic requirements, and digital radio broadcast television programme data flow point is fitted on the different subcarriers; Use according to the coding of digital radio broadcast TV, modulation etc.,, reach efficient use frequency spectrum resource and serve the digital radio broadcast TV so that more broadcast TV program to be provided.
Scene one
In the VHF wave band; The frequency spectrum that is allocated for the digital radio broadcast TV is discontinuous frequency range; Through carrier aggregation technology utilize the OFDM technical characterstic with these spendable discontinuous frequency spectrums as a whole frequency spectrum use according to digital radio broadcast television spectrum bandwidth, be divided into the plurality of sub carrier wave according to the OFDM characteristic requirements, and the broadcast TV program data flow assigned on the different subcarriers; Use by the coding of digital radio broadcast TV, modulation etc. again; And relevant informations such as each spectral bandwidth that the institute polymerization is used, frequency inform and use the terminal as the important information transmission, make and when receiving terminal receives, know employed spectrum information.
Scene two
In the UHF wave band; The frequency spectrum that is allocated for the digital radio broadcast TV is discontinuous frequency range; Through carrier aggregation technology utilize the OFDM technical characterstic with these spendable discontinuous frequency spectrums as a whole frequency spectrum use according to digital radio broadcast television spectrum bandwidth, be divided into the plurality of sub carrier wave according to the OFDM characteristic requirements, and the broadcast TV program data flow assigned on the different subcarriers; Use by the coding of digital radio broadcast TV, modulation etc. again; And relevant informations such as each spectral bandwidth that the institute polymerization is used, frequency inform and use the terminal as the important information transmission, make and when receiving terminal receives, know employed spectrum information.
Scene three
Between VHF wave band and the UHF wave band; The frequency spectrum that two band allocation is used for the digital radio broadcast TV is discontinuous frequency range; Through carrier aggregation technology utilize the OFDM technical characterstic with these spendable discontinuous frequency spectrums as a whole frequency spectrum use according to digital radio broadcast television spectrum bandwidth, be divided into the plurality of sub carrier wave according to the OFDM characteristic requirements, and the broadcast TV program data flow assigned on the different subcarriers; Use by the coding of digital radio broadcast TV, modulation etc. again; And relevant informations such as each spectral bandwidth that the institute polymerization is used, frequency inform and use the terminal as the important information transmission, make and when receiving terminal receives, know employed spectrum information.
Scene four
At other frequency spectrum that is assigned with the wave band that is applied to the digital radio broadcast TV is discontinuous frequency spectrum; But frequency spectrum and when being not enough to support that digital radiated television is professional separately; Through carrier aggregation technology utilize the OFDM technical characterstic with these spendable discontinuous frequency spectrums as a whole frequency spectrum use according to digital radio broadcast television spectrum bandwidth; Be divided into the plurality of sub carrier wave according to the OFDM characteristic requirements; And the broadcast TV program data flow assigned on the different subcarriers, use by the coding of digital radio broadcast TV, modulation etc. again, and relevant informations such as each spectral bandwidth that institute's polymerization is used, frequency are as the important information transmission; Inform and use the terminal, make and when receiving terminal receives, know employed spectrum information.
Embodiment 3: the carrier aggregation technology under continuous frequency spectrum and the discontinuous frequency spectrum is applied to the digital radio broadcast TV
In actual use; Divide the frequency spectrum that is used in the digital radio broadcast TV both to exist continuous frequency spectrum also to have discontinuous frequency spectrum; Can the carrier aggregation technology of continuous frequency spectrum and discontinuous frequency spectrum be united use; The overall spectrum of polymerization is divided into different subcarriers according to the OFDM characteristic requirements, and digital radio broadcast television programme data flow point is fitted on the different subcarriers; Use according to the coding of digital radio broadcast TV, modulation etc. again,, reach efficient use frequency spectrum resource and serve the digital radio broadcast TV so that more broadcast TV program to be provided.
Scene one
In the VHF wave band; The frequency spectrum that is allocated for the digital radio broadcast TV had both existed continuous frequency spectrum also to have discontinuous frequency spectrum; But frequency spectrum and when being not enough to support that digital radiated television is professional separately; Through carrier aggregation technology utilize the OFDM technical characterstic with these spendable frequency spectrums as a whole frequency spectrum use according to digital radio broadcast television spectrum bandwidth, be divided into the plurality of sub carrier wave according to the OFDM characteristic requirements, and the broadcast TV program data flow assigned on the different subcarriers; Use by the coding of digital radio broadcast TV, modulation etc. again; And relevant informations such as each spectral bandwidth that the institute polymerization is used, frequency inform and use the terminal as the important information transmission, make and when receiving terminal receives, know employed spectrum information.
Scene two
In the UHF wave band; The frequency spectrum that is allocated for the digital radio broadcast TV had both existed continuous frequency spectrum also to have discontinuous frequency spectrum; But frequency spectrum and when being not enough to support that digital radiated television is professional separately; Through carrier aggregation technology utilize the OFDM technical characterstic with these spendable frequency spectrums as a whole frequency spectrum use according to digital radio broadcast television spectrum bandwidth, be divided into the plurality of sub carrier wave according to the OFDM characteristic requirements, and the broadcast TV program data flow assigned on the different subcarriers; Use by the coding of digital radio broadcast TV, modulation etc. again; And relevant informations such as each spectral bandwidth that the institute polymerization is used, frequency inform and use the terminal as the important information transmission, make and when receiving terminal receives, know employed spectrum information.
Scene three
Between VHF wave band and the UHF wave band; The frequency spectrum that is allocated for the digital radio broadcast TV had both existed continuous frequency spectrum also to have discontinuous frequency spectrum; But frequency spectrum and when being not enough to support that digital radiated television is professional separately; Through carrier aggregation technology utilize the OFDM technical characterstic with these spendable frequency spectrums as a whole frequency spectrum use according to digital radio broadcast television spectrum bandwidth, be divided into the plurality of sub carrier wave according to the OFDM characteristic requirements, and the broadcast TV program data flow assigned on the different subcarriers; Use by the coding of digital radio broadcast TV, modulation etc. again; And relevant informations such as each spectral bandwidth that the institute polymerization is used, frequency inform and use the terminal as the important information transmission, make and when receiving terminal receives, know employed spectrum information.
Scene four
, other had both existed continuous frequency spectrum also to have discontinuous frequency spectrum in being assigned with the frequency spectrum of the wave band that is applied to the digital radio broadcast TV; But frequency spectrum and when being not enough to support that digital radiated television is professional separately; Through carrier aggregation technology utilize the OFDM technical characterstic with these spendable frequency spectrums as a whole frequency spectrum use according to digital radio broadcast television spectrum bandwidth; Be divided into the plurality of sub carrier wave according to the OFDM characteristic requirements; And the broadcast TV program data flow assigned on the different subcarriers, use by the coding of digital radio broadcast TV, modulation etc. again, and relevant informations such as each spectral bandwidth that institute's polymerization is used, frequency are as the important information transmission; Inform and use the terminal, make and when receiving terminal receives, know employed spectrum information.
The present invention adopts the OFDM carrier aggregation technology that a continuous frequency spectrum or some discontinuous frequency spectrums are divided into a plurality of subcarriers according to the OFDM characteristic requirements; Can utilize the broadcast television spectrum resource of having distributed better; Reach the effect of spread-spectrum resource effectively, and the broadcast TV program data flow is assigned on the different subcarriers, thereby under limited frequency spectrum resources, carry more broadcast TV program; Reduced the phase mutual interference of broadcast TV program between subcarrier; Also can improve the availability of frequency spectrum greatly, make the OFDM carrier aggregation technology be applied to the digital radio broadcast television network better, and broadcasting and television network of future generation.
Above-mentioned explanation illustrates and has described a preferred embodiment of the present invention; But as previously mentioned; Be to be understood that the present invention is not limited to the form that this paper discloses, should do not regard eliminating as, and can be used for various other combinations, modification and environment other embodiment; And can in invention contemplated scope described herein, change through the technology or the knowledge of above-mentioned instruction or association area.Be not limited to wireless digital broadcasting television network and broadcasting and television network of future generation like the applied system of the present invention.And change that those skilled in the art carried out and variation do not break away from the spirit and scope of the present invention, then all should be in the protection range of accompanying claims of the present invention.
Claims (9)
1. the frequency spectrum method for using of a digital radio broadcast TV; It is characterized in that; Adopt the OFDM carrier aggregation technology to become overall spectrum to use spendable spectrum aggregating, and each spectral bandwidth, frequency point information that institute's polymerization is used are informed the use terminal according to digital radio broadcast television spectrum bandwidth.
2. the method for claim 1; It is characterized in that; Said carrier aggregation process specifically comprises: the frequency spectrum that dispensing applications is used frequency spectrum in getting rid of of digital radio broadcast TV is aggregated into overall spectrum as digital radio broadcast television spectrum bandwidth, and each spectral bandwidth, frequency point information that institute's polymerization is used are informed the use terminal; The overall spectrum of polymerization is divided into different subcarriers according to the OFDM characteristic requirements, and digital radio broadcast television programme data flow point is fitted on the different subcarriers.
3. the method for claim 1 is characterized in that, said dispensing applications is one or more in following in the spectral bandwidth of digital radio broadcast TV: plurality of continuous frequency spectrum, some discontinuous frequency spectrums, continuous frequency spectrum and discontinuous frequency spectrum.
4. the frequency spectrum method for using of a digital radio broadcast TV is characterized in that, comprising:
Become overall spectrum as digital radio broadcast television spectrum bandwidth in the spectrum aggregating of digital radio broadcast TV dispensing applications;
The overall spectrum of polymerization is divided into different subcarriers according to the OFDM characteristic requirements;
Digital radio broadcast television programme data flow point is fitted on the different subcarriers.
5. method as claimed in claim 4 is characterized in that, said method further comprises, each spectral bandwidth, frequency relevant information that institute's polymerization is used are informed the use terminal.
6. method as claimed in claim 4 is characterized in that, said dispensing applications is one or more in following in the spectral bandwidth of digital radio broadcast TV: plurality of continuous frequency spectrum, some discontinuous frequency spectrums, continuous frequency spectrum and discontinuous frequency spectrum.
7. the frequency spectrum operative installations of a digital radio broadcast TV is characterized in that, comprising: the polymerization module, divide module, and distribution module,
Said polymerization module becomes overall spectrum as digital radio broadcast television spectrum bandwidth in the spectrum aggregating of digital radio broadcast TV dispensing applications;
Said division module is divided into different subcarriers with the overall spectrum of polymerization according to the OFDM characteristic requirements;
Said distribution module is fitted on digital radio broadcast television programme data flow point on the different subcarriers.
8. device as claimed in claim 7 is characterized in that, each spectral bandwidth, the frequency relevant information that said polymerization module is further used institute's polymerization informed and used the terminal.
9. method as claimed in claim 7 is characterized in that, said dispensing applications is one or more in following in the spectral bandwidth of digital radio broadcast TV: plurality of continuous frequency spectrum, some discontinuous frequency spectrums, continuous frequency spectrum and discontinuous frequency spectrum.
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| CN108900879A (en) * | 2018-06-30 | 2018-11-27 | 深圳市朗强科技有限公司 | High resolution audio and video wireless transmission, method of reseptance and device, transmission method and system |
| CN112367150A (en) * | 2013-08-11 | 2021-02-12 | 相干逻辑公司 | Broadcast/broadband convergence network |
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| CN102437988B (en) | 2018-01-30 |
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