CN104837055A - Broadcasting system - Google Patents
Broadcasting system Download PDFInfo
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- CN104837055A CN104837055A CN201410046223.1A CN201410046223A CN104837055A CN 104837055 A CN104837055 A CN 104837055A CN 201410046223 A CN201410046223 A CN 201410046223A CN 104837055 A CN104837055 A CN 104837055A
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- broadcast
- way communication
- broadcasting
- radio service
- broadcast system
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Abstract
The invention discloses a broadcasting system, comprising a broadcasting and TV station and a broadcasting access terminal, wherein the broadcasting and TV station is used for transmitting a broadcasting signal to the broadcasting access terminal; the broadcasting signal comprises bidirectional communication relevant information. The broadcasting access terminal is used for receiving and demodulating the broadcasting signal, and establishing connection with the broadcasting and TV station based on the bidirectional communication relevant information obtained after demodulating the broadcasting signal and under the condition that the broadcasting system supports bidirectional communication, so as to send an up link signal. According to the technical scheme, the broadcasting system scheme solves the problem of bidirectional communication which can not be solved by a present broadcasting system, so that users can feed back information to the broadcasting and TV station, and the broadcasting and TV station can send corresponding broadcasting television programs to the users based on user feedback information.
Description
Technical field
The present invention relates to broadcasting system field, particularly a kind of broadcast system.
Background technology
In traditional broadcast system, broadcast TV program is sent to user terminal by TV and Radio Service, and user watches the broadcast TV program received by user terminal.But along with the development of multimedia broadcasting techniques, user, while " passively " watches the broadcast TV program that TV and Radio Service transmits, also wishes to propose personalized demand.But in existing broadcast system, TV and Radio Service cannot obtain the feedback information of user, this one-way system more and more can not meet the needs of these users, such as, utilize broadcast system to carry out long-distance education, carry out that broadcast is voted etc. serves the feedback information all needing user, to make to carry out interaction between radio and television and user terminal, these are that traditional unidirectional broadcast network cannot be supported.
Summary of the invention
The problem that the present invention solves is that traditional broadcast system cannot support two-way communication.
For solving the problem, embodiments providing a kind of broadcast system, comprising TV and Radio Service and broadcast accesses terminal; Wherein, described TV and Radio Service is for the transmitting broadcast singal that accesses terminal to broadcast, and described broadcast singal comprises the relevant information of two-way communication; Described broadcast accesses terminal for receiving and demodulation broadcast singal, and when this broadcast system supports two-way communication, establishes the link to send uplink signal based on the relevant information of the two-way communication obtained after demodulation broadcast singal and TV and Radio Service.
Optionally, described TV and Radio Service comprises transmitter and up-link receiver; Described transmitter is for launching the physical frame of carrying broadcast singal, and described up-link receiver is used for receiving uplink signal.
Optionally, described transmitter accesses terminal transmitting broadcast singal, described up-link receiver by the second broadcast band receiving uplink signal by the first broadcast band to broadcast; Wherein said second broadcast band is determined based on the relevant information of two-way communication.
Optionally, described broadcast accesses terminal and comprises demodulator, and this demodulator is used for the broadcast singal that demodulation receives.
Optionally, described broadcast accesses terminal and also comprises Man Machine Interface and modulator; Wherein, described Man Machine Interface is suitable for the solicited message sent receiving user, and transfers to modulator to process this solicited message; Described modulator produces uplink signal based on the relevant information of the two-way communication obtained after receiving the solicited message that obtains and demodulator demodulation broadcast singal.
Optionally, described TV and Radio Service also comprises memory and signal processor; Wherein, described memory is for storing the solicited message in this uplink signal; Described signal processor is gone forward side by side after row relax for the solicited message obtained in described memory and is fed back to described transmitter.
Optionally, the relevant information of described two-way communication comprises signaling and the synchronized timestamp signaling whether this broadcast system supports two-way communication; Signaling and synchronized timestamp signaling that whether this broadcast system supports two-way communication is provided with in the front frequency pilot sign of described physical frame.
Optionally, the relevant information of described two-way communication also comprises broadcast control information; Determine in the data symbol of described physical frame to carry broadcast control information in position and the time/frequency source block ascertained the number, this broadcast control information comprises broadcast and accesses terminal and establish the link required uplink configuration parameter between TV and Radio Service.
Optionally, described uplink configuration parameter comprises transmission time adjustment parameter, power adjustment parameters and scheduling of resource parameter.
Compared with prior art, technical solution of the present invention has following beneficial effect:
In broadcast system, the broadcast singal that TV and Radio Service launches comprises the relevant information of two-way communication, broadcast accesses terminal from the broadcast singal received, demodulates the relevant information of this two-way communication, when broadcast system supports two-way communication, set up with the uplink of TV and Radio Service to send uplink signal, thus solve the problem that existing broadcast system cannot realize two-way communication.
Further, when broadcast system supports two-way communication, broadcast the solicited message that can send according to user that accesses terminal, and with demodulation broadcast singal after the relevant information of two-way communication that obtains produce uplink signal, thus making user can to TV and Radio Service's feedback information, TV and Radio Service can send based on the feedback information of user the broadcast TV program adapted to this user.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of broadcast system of the present invention;
Fig. 2 is the structural representation of the specific embodiment of a kind of broadcast system of the present invention.
Embodiment
Inventor finds that existing broadcast system cannot support two-way communication.
For the problems referred to above, inventor is through research, provide a kind of broadcast system, the broadcast singal that this TV and Radio Service launches comprises the relevant information of two-way communication, broadcast accesses terminal from the broadcast singal received, demodulates the relevant information of this two-way communication, when broadcast system supports two-way communication, set up with the uplink of TV and Radio Service to send uplink signal, thus solve the problem that existing broadcast system cannot realize two-way communication.
For enabling above-mentioned purpose of the present invention, feature and advantage more become apparent, and are described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.
As shown in Figure 1 be the structural representation of a kind of broadcast system of the present invention.With reference to figure 1, this broadcast system 1 comprises TV and Radio Service 11 and broadcast accesses terminal 12.
Described TV and Radio Service 11 is for the 12 transmitting broadcast singals that access terminal to broadcast, and wherein said broadcast singal comprises the relevant information of two-way communication.Described broadcast accesses terminal 12 for receiving and demodulation broadcast singal, and when this broadcast system 1 supports two-way communication, establish the link to send uplink signal based on the relevant information of the two-way communication obtained after demodulation broadcast singal and TV and Radio Service 11.
Structural representation below in conjunction with the specific embodiment of the broadcast system shown in Fig. 2 describes the technical program in detail.
With reference to figure 2, described TV and Radio Service 11 comprises transmitter 111 and up-link receiver 112.Wherein, described transmitter 111 is for launching the physical frame of carrying broadcast singal, and described up-link receiver 112 is for receiving uplink signal.
In the present embodiment, each physical frame comprises front frequency pilot sign and several data symbols, is provided with signaling and synchronized timestamp signaling that whether this broadcast system supports two-way communication in the front frequency pilot sign of wherein said physical frame.Such broadcast access terminal receive and this physical frame of demodulation after, can determine whether this broadcast system supports two-way communication (whether supporting the signaling of two-way communication according to this broadcast system), and make time synchronized when sending uplink signal to TV and Radio Service according to temporal information (inserting the time/frequency source block of carrying broadcast control information in the data symbol such as at physical frame every 10 milliseconds) implicit in synchronized timestamp signaling (characterizing the transmitting time of this physical frame) and broadcast control information.
Determine in the data symbol of described physical frame to carry broadcast control information in position and the time/frequency source block ascertained the number, this broadcast control information comprises broadcast and accesses terminal and establish the link required uplink configuration parameter between TV and Radio Service.Wherein, uplink configuration parameter comprises transmission time adjustment parameter, power adjustment parameters and scheduling of resource parameter etc.Particularly, carry out in framing process in TV and Radio Service, position and the number of the time/frequency source block distributing to broadcast control information in the data symbol of physical frame can be determined according to associated modulation signaling.And in the data symbol of physical frame, in vacant time/frequency source block, fill public program data, thus form the physical frame of carrying broadcast singal.
The physical frame of carrying broadcast singal is emitted to broadcast by the first broadcast band and accesses terminal 12 by described transmitter 111.Such as, the first broadcast band is 447-958MHz.
Described broadcast is accessed terminal 12 physical frames being received this carrying broadcast singal by input 123.Described broadcast accesses terminal and 12 comprises demodulator 121, the broadcast singal that this demodulator 121 receives for demodulation, comprise the public program data and broadcast control information that carry in the data symbol of demodulation physical frame, and determine whether this broadcast system supports two-way communication according to the relevant information of the two-way communication in frequency pilot sign before physical frame, when supporting two-way communication, broadcast 12 the linking (i.e. up link) as required between foundation with TV and Radio Service that access terminal, and by output 124, uplink signal is sent to TV and Radio Service 11 via the second broadcast band.Wherein, described second broadcast band is determined based on the relevant information of two-way communication, and such as, the second broadcast band is 111-167MHz.Generally, in order to avoid up-downgoing transfer of data clashes, the frequency range of the first broadcast band and the second broadcast band does not have overlap.Correspondingly, TV and Radio Service 11 is by up-link receiver 112 receiving uplink signal.
In another embodiment, described broadcast accesses terminal and 12 also comprises Man Machine Interface 125 and modulator 122.Wherein, described Man Machine Interface 125 is suitable for the solicited message that reception user sends, and transfers to modulator 122 to process this solicited message; Described modulator 122 produces uplink signal based on the relevant information of the two-way communication obtained after receiving the solicited message that obtains and demodulator 121 demodulation broadcast singal.Such user can access terminal 12 to TV and Radio Service 11 feedback information by broadcast, thus realizes the interaction between TV and Radio Service 11.In actual applications, described broadcast accesses terminal and 12 also comprises controller 126, and this controller 126 can control described demodulator 121 and modulator 122 and dispatch.
Correspondingly, TV and Radio Service 11 also comprises memory 113 and signal processor 114.Wherein, described memory 113 is for storing the solicited message in this uplink signal; Described signal processor 114 is gone forward side by side after row relax for the solicited message obtained in described memory 113 and is fed back to described transmitter 111.Solicited message in conjunction with user is generated the physical frame of carrying broadcast singal by such TV and Radio Service 11, thus launches corresponding broadcast singal according to the demand of user to its (i.e. this user use subscriber access termination).
In sum, the problem that existing broadcast system cannot realize two-way communication is solved according to the broadcast system that the technical program provides, thus making user can to TV and Radio Service's feedback information, TV and Radio Service can send based on the feedback information of user the broadcast TV program adapted to this user.
Although the present invention with preferred embodiment openly as above; but it is not for limiting the present invention; any those skilled in the art without departing from the spirit and scope of the present invention; the Method and Technology content of above-mentioned announcement can be utilized to make possible variation and amendment to technical solution of the present invention; therefore; every content not departing from technical solution of the present invention; the any simple modification done above embodiment according to technical spirit of the present invention, equivalent variations and modification, all belong to the protection range of technical solution of the present invention.
Claims (9)
1. a broadcast system, is characterized in that, comprising: TV and Radio Service and broadcast access terminal;
Wherein,
Described TV and Radio Service is for the transmitting broadcast singal that accesses terminal to broadcast, and described broadcast singal comprises the relevant information of two-way communication;
Described broadcast accesses terminal for receiving and demodulation broadcast singal, and when this broadcast system supports two-way communication, establishes the link to send uplink signal based on the relevant information of the two-way communication obtained after demodulation broadcast singal and TV and Radio Service.
2. broadcast system as claimed in claim 1, it is characterized in that, described TV and Radio Service comprises transmitter and up-link receiver; Described transmitter is for launching the physical frame of carrying broadcast singal, and described up-link receiver is used for receiving uplink signal.
3. broadcast system as claimed in claim 2, is characterized in that, described transmitter accesses terminal transmitting broadcast singal, described up-link receiver by the second broadcast band receiving uplink signal by the first broadcast band to broadcast; Wherein said second broadcast band is determined based on the relevant information of two-way communication.
4. broadcast system as claimed in claim 1, it is characterized in that, described broadcast accesses terminal and comprises demodulator, and this demodulator is used for the broadcast singal that demodulation receives.
5. broadcast system as claimed in claim 4, it is characterized in that, described broadcast accesses terminal and also comprises Man Machine Interface and modulator; Wherein, described Man Machine Interface is suitable for the solicited message that reception user sends, and transfers to modulator to process this solicited message; Described modulator produces uplink signal based on the relevant information of the two-way communication obtained after receiving the solicited message that obtains and demodulator demodulation broadcast singal.
6. broadcast system as claimed in claim 5, it is characterized in that, described TV and Radio Service also comprises memory and signal processor; Wherein, described memory is for storing the solicited message in this uplink signal; Described signal processor is gone forward side by side after row relax for the solicited message obtained in described memory and is fed back to described transmitter.
7. broadcast system as claimed in claim 2, it is characterized in that, the relevant information of described two-way communication comprises signaling and synchronized timestamp signaling that whether this broadcast system supports two-way communication;
Signaling and synchronized timestamp signaling that whether this broadcast system supports two-way communication is provided with in the front frequency pilot sign of described physical frame.
8. broadcast system as claimed in claim 2, it is characterized in that, the relevant information of described two-way communication also comprises broadcast control information;
Determine in the data symbol of described physical frame to carry broadcast control information in position and the time/frequency source block ascertained the number, this broadcast control information comprises broadcast and accesses terminal and establish the link required uplink configuration parameter between TV and Radio Service.
9. broadcast system as claimed in claim 8, is characterized in that, described uplink configuration parameter comprises transmission time adjustment parameter, power adjustment parameters and scheduling of resource parameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410046223.1A CN104837055B (en) | 2014-02-10 | 2014-02-10 | Broadcast system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410046223.1A CN104837055B (en) | 2014-02-10 | 2014-02-10 | Broadcast system |
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| CN104837055A true CN104837055A (en) | 2015-08-12 |
| CN104837055B CN104837055B (en) | 2019-02-26 |
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| CN201410046223.1A Active CN104837055B (en) | 2014-02-10 | 2014-02-10 | Broadcast system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108199855A (en) * | 2017-05-11 | 2018-06-22 | 南京义怀数据系统有限公司 | A kind of two-way multimedia means of communication based on digital broadcasting |
| CN110048801A (en) * | 2018-01-16 | 2019-07-23 | 中兴通讯股份有限公司 | A kind of data transmission method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108199855A (en) * | 2017-05-11 | 2018-06-22 | 南京义怀数据系统有限公司 | A kind of two-way multimedia means of communication based on digital broadcasting |
| CN110048801A (en) * | 2018-01-16 | 2019-07-23 | 中兴通讯股份有限公司 | A kind of data transmission method and device |
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| CN104837055B (en) | 2019-02-26 |
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Address after: Room 1018, block B, No. three East Bridge Road, Pudong New Area, Shanghai, 200125, China Applicant after: Shanghai NERC-DTV National Engineering Research Center Co., Ltd. Address before: 200125 Shanghai East Road, Pudong New Area, No. three, No. 1018 Applicant before: Shanghai NERC-DTV National Engineering Research Center Co., Ltd. |
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