CN101459483A - Method, transmission point and system for implementing urban digital broadcast - Google Patents
Method, transmission point and system for implementing urban digital broadcast Download PDFInfo
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- CN101459483A CN101459483A CNA2007101790712A CN200710179071A CN101459483A CN 101459483 A CN101459483 A CN 101459483A CN A2007101790712 A CNA2007101790712 A CN A2007101790712A CN 200710179071 A CN200710179071 A CN 200710179071A CN 101459483 A CN101459483 A CN 101459483A
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Abstract
The invention provides a method for realizing the urban digital broadcasting, which comprises obtaining data needing to be broadcasted by emission points, broadcasting the obtained data within the range covered by the emission points in a short-distance wireless communication mode, receiving related data subscribed by a terminal in the data by the terminal, and then watching received data off line by the terminal. The invention further provides an emission point for realizing the urban digital broadcasting and a system thereof, and the method, the emission point and the system thereof use the short-distance wireless communication technology, and has low power, high transmission speed, and low networking cost and convenient operation.
Description
Technical field
The present invention relates to the urban digital broadcast technology, relate in particular to a kind of method, launch point and system that realizes urban digital broadcast.
Background technology
In the prior art, the scheme that realizes urban digital broadcast has a variety of, below introduces the scheme of wherein several realization urban digital broadcast system respectively:
A kind of scheme is new digit broadcasting system, as hand-held digital video broadcast (DVB-H), T-DMB (T-DMB) etc., wherein, DVB-H is the transmission standard that provides multimedia service to work out to handheld terminal for by the received terrestrial digital broadcasting network, the DVB-H system relies on the DVB-T transmission system, make handheld terminal can stably receive broadcast television signal by increasing certain additional function and improvement technology, DVB-H can guarantee portable terminal receiving digital television program under mobile environment and little power consumption condition.The T-DMB system comprises a DMB surveillance, two video encoders, video gateway and multiplexers, and flexible services can be provided, and comprises video broadcasting, audio broadcasting, independent traffic/news/weather channel.T-DMB utilizes ITU-T H.264 video to be encoded, utilize dynamic image expert group (MPEG)-4 bit sliced algorithm coding (BSAC) that audio frequency is encoded, utilize MPEG-4 layer, sync and mpeg 2 transport stream that video, audio frequency and extra data are handled then.Above-mentioned two kinds of systems all can realize covering the mobile broadcast net of whole city, but the terminal that this radio network needs the user more to renew is used special-purpose frequency spectrum resource, simultaneously, also need set up the very big launching tower of power, not environmental protection and networking difficulty.
Another kind of scheme is to add broadcast channel in existing mobile communications system, realize broadcast capability to a certain degree, as multimedia broadcast-multicast service (MBMS) in the Wideband Code Division Multiple Access (WCDMA) (WCDMA) etc., the shortcoming of this scheme is: the frequency spectrum resource to mobile communication system expends greatly, broadcasting-quality is not high and necessary and wireless wide area network binding, and is very dumb.
In addition, also having a kind of scheme is the note system that utilizes in the mobile communication system, and simple press service etc. is provided, but, this scheme need consume the frequency spectrum resource of mobile communication system, and simple information service such as weather forecast, news etc. can only be provided, and speed is extremely low.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method, launch point and system that realizes urban digital broadcast, and power is low, transmission rate is high, and the cost of building a station low, be convenient to the operation.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of method that realizes urban digital broadcast, be applied to comprise that this method comprises in the network of at least one launch point:
Obtain the data that need broadcasting;
In the scope that launch point was covered, broadcast the data of being obtained in the short-distance wireless communication mode; Terminal receives the related data of self subscribing in the described data.
Wherein, when determining that there is packet loss in the received data of terminal, this method further comprises: when launch point was broadcasted identical data once more in the short-distance wireless communication mode, terminal received by the broadcast data of packet loss.
This method further comprises: the terminal off-line is watched received data.
Described obtaining needs the data of broadcasting to be specially:
Launch point obtains from the memory cell of self; Or,
Launch point obtains from other launch points by network; Or,
Launch point obtains from the server that broadcast data is provided by network.
Described short-distance wireless communication mode is: WLAN (wireless local area network) WiFi or ultrawideband UWB or high speed bluetooth Bluetooth technology.
The present invention provides a kind of launch point of realizing urban digital broadcast simultaneously, and this launch point comprises: broadcast data acquisition module, message protocol packetization module and wireless processing module, wherein,
The broadcast data acquisition module is used to obtain the data that need broadcasting;
Wireless processing module, the data that are used for receiving outwards send in the short-distance wireless communication mode.
Wherein, described launch point also comprises the message protocol packetization module, after being used for the data that the broadcast data acquisition module sends are encrypted and packing, sends to wireless processing module.
This launch point further comprises:
Memory module, the data that launch point need be broadcasted under being used to store, and carry out data when obtaining when the broadcast data acquisition module, the data of storing are sent to the broadcast data acquisition module.
Wireless processing module is further used for: the authentication information that receiving terminal is sent, and described authentication information sent to authentication module; The authentication License Info that also is used for receiving sends to terminal;
Accordingly, this launch point further comprises:
Authentication module is used for the authentication information that receives is authenticated, and is sending corresponding authentication License Info by the authentication back to wireless processing module.
The present invention provides a kind of system that realizes urban digital broadcast simultaneously, and this system comprises:
At least two launch points, separate between the described launch point, each launch point links to each other with network, and broadcasts the data of being obtained in self coverage;
Described launch point comprises broadcast data acquisition module and wireless processing module, wherein,
The broadcast data acquisition module is used to obtain the data that need broadcasting;
Wireless processing module, the data that are used for receiving are broadcasted in the short-distance wireless communication mode.
Wherein, described launch point also comprises the message protocol packetization module, after being used for the data that the broadcast data acquisition module sends are encrypted and packing, sends to wireless processing module.
This system further comprises:
The broadcast data services device is used for providing to each launch point by network the data of its required broadcasting.
Be arranged at the data difference of the launch point broadcasting of different hot spot regions.
Method of the present invention, launch point and system use short-distance wireless communication technology to carry out the broadcasting of data, and power is low, transmission rate is high, need not to apply for frequency spectrum, and need not to build complicated base station, are convenient to operation; Launch point is positioned at different public places, and carries out the setting of broadcasted content according to the demand of public place of living in, when terminal moves in different public places, can receive different contents; Separate between each launch point, or the isolated existence of launch point, so need not between launch point to be convenient to management synchronously; Overlay area in the urban digital broadcast of the present invention system between each launch point can not intercommunication, and promptly this urban digital broadcast system need not to realize region-wide seamless covering.
Description of drawings
Fig. 1 realizes the method flow schematic diagram of urban digital broadcast for the present invention;
Fig. 2 realizes the structural representation of the launch point of urban digital broadcast for the present invention.
Embodiment
Main thought of the present invention is: the launch point of broadcasting corresponding contents is set in different hot spot regions, and launch point obtains the data that self need broadcast, and broadcasts in the short-distance wireless communication mode; Arrive the coverage of launch point when terminal after, receive and store the broadcast data of self subscribing to.
Here, described launch point obtains broadcast data and can obtain from number of ways, such as obtaining from network, obtaining or the like from the memory cell of self.
Below be described with reference to the accompanying drawings the realization of urban digital broadcast method and launch point among the present invention by specific embodiment.
Fig. 1 realizes the method flow schematic diagram of urban digital broadcast for the present invention, and the launch point of broadcasting corresponding contents is set in different hot spot regions, and wherein, described broadcasting content corresponding is specially: according to the residing regional broadcast of the launch point relevant content in zone therewith; Or the content type broadcasting content corresponding of the need that are set up according to launch point broadcasting, as shown in Figure 1, this method comprises:
Step 101: launch point obtains the data that self need broadcast, and after the packing data of being obtained, broadcasts in its overlay area in the short-distance wireless communication mode.
Wherein, described hot spot region can be various public places, for example bus station, subway station or the like.Be in the launch point of different hot spot regions, the data of its broadcasting are generally inequality.
Described short-distance wireless communication mode can be WLAN (wireless local area network) (WiFi), ultrawideband (UWB) or high speed bluetooth Bluetooth technology etc.Set a plurality of launch points can isolate existence, and each obtains the data that self need broadcast since the memory cell of self, needs the renewal of broadcast data at regular intervals in this locality; Also can be independent mutually, be connected to separately on the network, obtain the required data of broadcasting from network, and carry out Data Update as required, need not between each launch point synchronously; Further, each launch point also can obtain the required data of broadcasting from other launch point or networks that can obtain related data, repeats no more here.
The time interval that each launch point institute broadcast data upgrades can independently be set, and also can carry out respective settings as required, and the time interval that each launch point carries out Data Update can set separately, need not identical.Further, when launch point links to each other with network, can the broadcast data services device be set, be used for sending the data that need broadcasting accordingly to launch point at network side; Launch point can initiatively send new data to the request of broadcast data services device and carry out the renewal of broadcast data, also can initiatively be sent the data of new need broadcasting by the broadcast data services device to launch point.
The described data of broadcasting that need can be carried out corresponding setting according to the position at launch point place, and for example, when launch point was positioned at the shopping centre, the data that can broadcast were set to local commercial relevant advertising message; When launch point was positioned at subway station, the data that can broadcast were set to news information or the like; Corresponding launch point carries out periodic broadcast (sites) in turn to the data of needs broadcasting, perhaps, when the data that need broadcasting in the launch point are enough enriched, the broadcast data that the sustainable broadcast of launch point is different, and need not loop play.
Launch point sends the Frame that carries broadcast message to each user terminal, and Frame can generate according to the defined form of table one in packing process:
| Channel identification | Unit's Notation Of Content | The unit content initial/end mark | Bag is long | Broadcasted content |
Table one
In the table one, channel identification is used for designation data frame subordinate channel, for example: when user terminal wishes to receive the content of The Beijing News, use certain sign to represent that this Frame is the related content in The Beijing News in the described channel identification; Unit's Notation Of Content is represented the type of data in the current data frame, for example is the picture etc. on literal, video or the newspaper; Unit's content is initial/and whether end mark be used to indicate current first content to finish, or new first content of indication beginning; The long length that is used to indicate current data frame of bag; Broadcasted content is used to place the current data that will broadcast of this launch point.
In actual applications, the Frame that launch point sent can according to circumstances carry out corresponding change on the basis that comprises each listed in the table one territory at least.And the Frame that launch point sends can use example self-defined form as shown in Table 1, also can use corresponding data frame format in the prior art, repeats no more here.
In addition, the employed Radio Broadcasting Agreements of launch point also can adopt self-defined form, or uses other known Radio Broadcasting Agreements, and for example User Datagram Protoco (UDP) (UDP) agreement etc. repeats no more here.
Here, launch point concrete as how the broadcasting of carrying out data of short-distance wireless communication mode belong to known technology, repeat no more here.
Step 102: enter the coverage of launch point when terminal after, detect self current affiliated launch point.
Wherein, how terminal detects launch point belongs to known technology, repeats no more here.
Step 103: terminal is obtained self the ordered position of related data in broadcast data.
Said process can send the signaling packet that is similar to electronic program list of special definition or the signaling information realization of carrying similar electronic program list by launch point in the data message of broadcasting to terminal by launch point in actual applications.
Wherein, described subscription can be used accomplished in many ways, for example:
The terminal use locates in operator, off-line is subscribed to self interested content, obtain password card or similar qualification authentication sign from operator, in the input terminal, when needs are downloaded, carry out qualification authentication between terminal and the launch point, after the authentication, launch point sends to terminal and authenticates License Info accordingly, and terminal is carried out the decoding of self subscription data that obtains or carry out being obtained of self subscription data according to the authentication License Info that receives;
Online by receiving the described electronic program list of launch point broadcasting, therefrom choose self interested channel and receive, pay by other modes, for example, can calculate the flow of the data of at every turn obtaining, from user account, deduct the corresponding amount of money etc. according to flow.
Certainly, just listed two kinds of methods in the operable method above, in actual applications, can also use other method for subscribing, repeated no more here.
Step 104: terminal receives and stores self ordered related data.
Here, terminal is carried out formats stored, the reference format that can define in advance for operator, also can user-defined format, and, according to data protocol form of the prior art, even can realize lost data frames, do not influence reception, storage and the demonstration of follow-up data yet.
Wherein, have two kinds of situations: terminal in receiving course, when the coverage of leaving the launch point that is connected when terminal causes receiving course to finish, perhaps when terminal initiatively finishes receiving course, execution in step 106; Terminal receives all one when taking turns the content that needs in the broadcasting, can finish receiving course, and execution in step 106 as still being in the broadcast reception zone, also can continue execution in step 105.
Step 105: terminal receive all one take turns broadcasting after, if still be in the broadcast reception zone, promptly in the launch point coverage, then terminal checks whether received data exist packet loss, if exist, then from the broadcasting of a new round, obtain the above-mentioned data that do not receive once more.
Step 106: the terminal off-line is watched the broadcasted content that receives.
In above-mentioned steps, step 105,106 is an optional step.
Fig. 2 realizes the structural representation of the launch point of urban digital broadcast for the present invention, and as shown in Figure 2, this launch point comprises: memory module 210, broadcast data acquisition module 220, message protocol packetization module 230 and wireless processing module 240, wherein,
Broadcast data acquisition module 220 is used to obtain the data of needs broadcasting, and the data that get access to are sent to message protocol packetization module 230.
Wherein, when launch points under the described broadcast data acquisition module 220 are isolated when existing, can obtain the broadcasting desired data from the memory module the affiliated launch point 210; When affiliated launch point is connected to network, also can from network, directly obtain related data.
Message protocol packetization module 230 is used for the described data that receive being encrypted and packing, and afterwards, sends to wireless processing module 240.
Wherein, wireless processing module 240 is further used for: the authentication information that receiving terminal is sent, and the described authentication information that will receive sends to authentication module 250.
Wherein, wireless processing module 240 all uses short-distance wireless communication technology that data are handled accordingly when the reception of carrying out data and transmission.
Wherein, memory module 210, authentication module 250 are optional module.
The launch point of above-mentioned some can constitute the urban digital broadcast system, and in this system, described launch point can isolate existence, also can independently be connected on the network mutually.
When described launch point is connected on the network, obtain the data that self need broadcast by network, corresponding, can further include in this system:
The broadcast data services device is used for sending the data that launch point need be broadcasted by network to launch point.
Wherein, the broadcast data services device can initiatively send new broadcast data to launch point by network, also can send new broadcast data to corresponding launch point when launch point is asked.
Wherein, the overlay area of each launch point is generally less in the system, and the overlay area between each launch point can not intercommunication, and promptly this urban digital broadcast system need not to realize region-wide seamless covering.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (13)
1, a kind of method that realizes urban digital broadcast is applied to comprise in the network of at least one launch point, and it is characterized in that, this method comprises:
Obtain the data that need broadcasting;
In the scope that launch point was covered, broadcast the data of being obtained in the short-distance wireless communication mode; Terminal receives the related data of self subscribing in the described data.
2, the method for realization urban digital broadcast according to claim 1, it is characterized in that, when determining that there is packet loss in the received data of terminal, this method further comprises: when launch point was broadcasted identical data once more in the short-distance wireless communication mode, terminal received by the broadcast data of packet loss.
3, the method for realization urban digital broadcast according to claim 1 is characterized in that, this method further comprises: the terminal off-line is watched received data.
According to the method for each described realization urban digital broadcast of claim 1 to 3, it is characterized in that 4, described obtaining needs the data of broadcasting to be specially:
Launch point obtains from the memory cell of self; Or,
Launch point obtains from other launch points by network; Or,
Launch point obtains from the server that broadcast data is provided by network.
5, the method for realization urban digital broadcast according to claim 1 and 2 is characterized in that, described short-distance wireless communication mode is: WLAN (wireless local area network) WiFi or ultrawideband UWB or high speed bluetooth Bluetooth technology.
6, a kind of launch point of realizing urban digital broadcast is characterized in that, this launch point comprises: broadcast data acquisition module, message protocol packetization module and wireless processing module, wherein,
The broadcast data acquisition module is used to obtain the data that need broadcasting;
Wireless processing module, the data that are used for receiving outwards send in the short-distance wireless communication mode.
7, the launch point of realization urban digital broadcast according to claim 6, it is characterized in that, described launch point also comprises the message protocol packetization module, after being used for the data that the broadcast data acquisition module sends are encrypted and packing, sends to wireless processing module.
8, the launch point of realization urban digital broadcast according to claim 6 is characterized in that, this launch point further comprises:
Memory module, the data that launch point need be broadcasted under being used to store, and carry out data when obtaining when the broadcast data acquisition module, the data of storing are sent to the broadcast data acquisition module.
9, according to the launch point of each described realization urban digital broadcast of claim 6 to 8, it is characterized in that,
Wireless processing module is further used for: the authentication information that receiving terminal is sent, and described authentication information sent to authentication module; The authentication License Info that also is used for receiving sends to terminal;
Accordingly, this launch point further comprises:
Authentication module is used for the authentication information that receives is authenticated, and is sending corresponding authentication License Info by the authentication back to wireless processing module.
10, a kind of system that realizes urban digital broadcast is characterized in that, this system comprises:
At least two launch points, separate between the described launch point, each launch point links to each other with network, and broadcasts the data of being obtained in self coverage;
Described launch point comprises broadcast data acquisition module and wireless processing module, wherein,
The broadcast data acquisition module is used to obtain the data that need broadcasting;
Wireless processing module, the data that are used for receiving are broadcasted in the short-distance wireless communication mode.
11, the system of realization according to claim 10 city data broadcasting, it is characterized in that, described launch point also comprises the message protocol packetization module, after being used for the data that the broadcast data acquisition module sends are encrypted and packing, sends to wireless processing module.
According to the system of claim 10 or 11 described realization urban digital broadcasts, it is characterized in that 12, this system further comprises:
The broadcast data services device is used for providing to each launch point by network the data of its required broadcasting.
13, the system of realization urban digital broadcast according to claim 12 is characterized in that, is arranged at the data difference of the launch point broadcasting of different hot spot regions.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104333797A (en) * | 2013-07-22 | 2015-02-04 | 联想(北京)有限公司 | Information processing method and electronic equipment |
| CN105744487A (en) * | 2016-05-16 | 2016-07-06 | 深圳市呤云科技有限公司 | Broadcast method based on wireless beacon and broadcast device based on wireless beacon |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5822324A (en) * | 1995-03-16 | 1998-10-13 | Bell Atlantic Network Services, Inc. | Simulcasting digital video programs for broadcast and interactive services |
| SE512756C2 (en) * | 1997-11-10 | 2000-05-08 | Dobora Communication Ab | Method and device for wireless data transmission |
| US7844214B2 (en) * | 2002-03-02 | 2010-11-30 | Nokia Corporation | System and method for broadband digital broadcasting |
| CN100377512C (en) * | 2003-03-06 | 2008-03-26 | 无敌科技股份有限公司 | Data transmission and data reproduction method for digital broadcast |
| CN1735014A (en) * | 2004-08-02 | 2006-02-15 | 四川长虹电器股份有限公司 | Digital communication broadcast system |
| CN101043278A (en) * | 2006-03-23 | 2007-09-26 | 刘劲彤 | Method for transmitting and receiving short distance wireless digital broadcast |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104333797A (en) * | 2013-07-22 | 2015-02-04 | 联想(北京)有限公司 | Information processing method and electronic equipment |
| CN105744487A (en) * | 2016-05-16 | 2016-07-06 | 深圳市呤云科技有限公司 | Broadcast method based on wireless beacon and broadcast device based on wireless beacon |
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| CN101459483B (en) | 2012-06-06 |
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