CN1960520B - Method for transferring auxiliary data in mobile multimedia broadcasting - Google Patents
Method for transferring auxiliary data in mobile multimedia broadcasting Download PDFInfo
- Publication number
- CN1960520B CN1960520B CN2006101596582A CN200610159658A CN1960520B CN 1960520 B CN1960520 B CN 1960520B CN 2006101596582 A CN2006101596582 A CN 2006101596582A CN 200610159658 A CN200610159658 A CN 200610159658A CN 1960520 B CN1960520 B CN 1960520B
- Authority
- CN
- China
- Prior art keywords
- data
- auxiliary data
- channel
- auxiliary
- packet header
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/40—Connection management for selective distribution or broadcast
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The method comprises: using a mobile terminal in the coverage of the service network; dedicatedly opening up an auxiliary data segment in the channel data; packaging the auxiliary data to be send out in certain time into the auxiliary data segment; the service network sends said channel data to said mobile terminal through radio service channel; said mobile terminal receives the channel data and extracts said auxiliary data from said auxiliary data segment. The method can improves the transmission efficiency of auxiliary data and can be used in subtitle file download and IP multicast.
Description
Technical field
The present invention relates to the multimedia broadcasting technology, be specifically related to a kind of method of in Mobile Multimedia Broadcasting, transmitting auxiliary data.
Background technology
Mobile Multimedia Broadcasting is a kind of Play Technique for Multimedia of rising in recent years.By hand-held terminal, under the situation of high-speed mobile, can watch TV.Terminal receives programme by wireless protocols, and can select the channel of oneself having the right to watch, thereby can accept to select the multi-medium data of channel, is implemented in and sees TV on the portable terminal.
The aerial data of system emission are divided into different channels, and the data of each channel comprise again: three types of video, audio frequency and auxiliary datas, terminal can receive relevant data, by the player on the terminal, realizes the normal play of TV.
Auxiliary data is used for realizing that captions, picture, file are downloaded, the IP multicast application, is an important supplement to the video-voice frequency flow of real-time broadcast in radio network.
The method for packing of existing auxiliary data has following two kinds:
(1) transport stream TS mode, TS agreement are a kind of in Motion Picture Experts Group's mpeg standard, and it is placed on auxiliary data, video, audio frequency in the bag of fixing 188 byte-sized and transmits.
(2) realtime transmission protocol RTP mode is the method that transmits auxiliary data, video, voice data in IP network, and the size of bag is fixing, and the time stamp by each packet header guarantees the time synchronized play, guarantees the broadcast order that wraps by sequence number.
These two kinds of methods respectively have the strengths and weaknesses, and the RTP mode can only be used on IP network, because RTP head, UDP head and IP head are bigger, each RTP bag is more little, and expense is big more, is not suitable for transmitting all smaller auxiliary data of each bag.The size of TS mode is fixed, and one piece of data is divided into the intermediate transport of a plurality of TS bag, and last bag always can not use up fully, has a large amount of filling informations, and the efficiency of transmission of TS mode is lower, approximately is between 80% to 90%.
On the other hand, it is very limited that service network can offer the wireless bandwidth of each portable terminal, and be to satisfy the clear demonstration of clear terminal to need enough transmission rates, but the low auxiliary data that must cause the corresponding minimizing of audio, video data actual transfer rate maybe can transmit of auxiliary data transmission efficient reduces, and then makes the audio frequency and video quality decline of portable terminal output can't realize that maybe more captions, picture, file are downloaded, the IP multicast application.
Summary of the invention
The technical issues that need to address of the present invention provide a kind of method of transmitting auxiliary data in Mobile Multimedia Broadcasting, can improve auxiliary data transmission efficient, and then can realize that more captions, picture, file are downloaded, the IP multicast application.
Above-mentioned technical problem of the present invention solves like this, a kind of method of transmitting auxiliary data in Mobile Multimedia Broadcasting is provided, use the portable terminal in service network and the coverage thereof, in channel data, open up ancillary data sections specially, to wait in a period of time that the auxiliary data of sending out is assembled in the described ancillary data sections, described service network sends channel data by wireless operation channel to described portable terminal.
So some auxiliary datas are encapsulated together replacement TS formula individual packages, reduce packet header and filler code, can improve the efficiency of transmission of auxiliary data.
According to method provided by the invention, described ancillary data sections comprises data segment header and holds N auxiliary data unit of each bar auxiliary data one by one, and described data segment header comprises the number N of described auxiliary data unit and the length of each auxiliary data unit wherein.
According to method provided by the invention, described N is the natural number greater than 1, and N can change, and has adopted elongated means to substitute TS formula regular length filling mode, has further improved the efficiency of transmission of auxiliary data.
According to method provided by the invention, described auxiliary data comprises this auxiliary data type number and particular content.
According to method provided by the invention, described type comprises captions, picture, file download or IP multicast.
According to method provided by the invention, described data segment header also comprises check code.
According to method provided by the invention, described channel data also comprises packet header, and described packet header comprises the length of packet header length, ancillary data sections.
According to method provided by the invention, described channel data also can comprise video-frequency band, and described packet header also comprises video-frequency band length and video parameter collection.
According to method provided by the invention, described channel data also can comprise audio section, and described packet header also comprises audio section length and audio frequency parameter collection.
According to method provided by the invention, described packet header also comprises check code.
According to method provided by the invention, described method also further comprises: portable terminal receives described channel data and take out described auxiliary data one by one from described data segment.
A kind of method of in Mobile Multimedia Broadcasting, transmitting auxiliary data provided by the invention, encapsulate some auxiliary datas in a channel data, further improve efficiency of transmission, can satisfy audio frequency and video function application such as more realization captions, file downloads, IP multicast under the prerequisite clearly by elongated means.
Description of drawings
Further the present invention is described in detail below in conjunction with the drawings and specific embodiments.
Fig. 1 is the schematic diagram that Media Stream transmits in service channel.Among the figure, service channel 1 has comprised 1 the needed packet header of complete channel, video-frequency band, audio section and ancillary data sections.
Fig. 2 is the schematic diagram that the internal logic of the ancillary data sections of frame structure shown in Figure 1 concerns.
Embodiment
At first, the inventive method core is described: will the auxiliary data in a period of time be packaged together, realize the transmission of auxiliary data, comprise the following aspects:
The channel data of (1) 1 service channel is made up of packet header, video-frequency band, audio section, ancillary data sections.
(2) ancillary data sections is made up of auxiliary data paragraph header and a plurality of auxiliary datas unit.
(3) the auxiliary data paragraph header is an attribute of describing each auxiliary data unit, comprising: the type of the length of each auxiliary data unit, auxiliary data unit, the check code of data segment header.
(4) each auxiliary data unit can encapsulate the content and the attribute thereof of auxiliary data.
Further, the method for packing of the present invention to auxiliary data is described, as shown in Figure 1, the corresponding channel of service channel, the data of a channel are to send a secondary data in a Fixed Time Interval, and Fixed Time Interval can be a second, also can be the other times value.
The data of a channel are made up of packet header 10, video-frequency band 11, audio section 12, ancillary data sections 13.Mainly be some control informations in the packet header 10, must provide.Packet header 10 is to the effect that: packet header length, video-frequency band length, audio section length, auxiliary data segment length, video parameter collection, audio frequency parameter collection, timestamp, check code etc.Wherein: check code can be verified the reliability of header packet information.Timestamp is to be used for guaranteeing the demonstration time of data on screen.Video-frequency band 11, audio section 12, ancillary data sections 13 all can be selected to occur, and one or more can occur, and whether these three data segments occur and can the corresponding control field from packet header 10 judge.
As shown in Figure 2, ancillary data sections 13 is made up of data segment header 130, a N auxiliary data unit 131, and N can change, according to the occurrence of the decision of the actual needs in a period of time N.
The relevant information of auxiliary data unit 131 is all described in data segment header 130, and partial content is in the data segment header 130:
(1) sum of auxiliary data unit.
(2) length of each auxiliary data unit.
(3) type of each auxiliary data unit, described auxiliary data cell type comprises captions, picture, file download, ESG or IP multicast.(4) check code.
Each auxiliary data unit 131 is elongated, has not had padding data, contrast TS method for packing, the utilance of raising auxiliary data transmission.Check code is in order to prevent error code, to improve reliability.
Auxiliary data unit 131 is encapsulation particular contents, can comprise captions, picture, file, IP bag, can realize colourful miscellaneous service.
Below relatively the present invention is described further by an instantiation and prior art: in this example, a service channel has the speed of 256Kbit/s.
The total length of this channel data is the 32K byte, wherein: packet header 10 long 37 bytes; The video-frequency band total length is the 26.8K byte; The audio section total length is the 4.1K byte; Ancillary data sections head length 21 bytes, auxiliary data unit have 8, and auxiliary data unit total length is the 1K byte.For the part of not enough 32K byte, can fill complete 0.
Such television channel can provide the video data of 212Kbit/s speed, and the auxiliary data of the voice data of 32Kbit/s speed and 8Kbit/s speed can satisfy the transmission of the video data of the H264 of QVGA resolution, 25 frames or AVS.In the mobile broadcast television program that suitable satisfactory quality is provided to the user, can provide captions, picture for the user, be presented on the screen by terminal.
Prior art adopts the TS mode to encapsulate, if 8 data unit package are transmitted in the TS bag, needs 10 TS bags, need take the bandwidth of 1504 bytes, and utilance is less than 80%.The method of this patent has improved 20% utilance than TS mode.
Claims (8)
1. method of in Mobile Multimedia Broadcasting, transmitting auxiliary data, use the portable terminal in service network and the coverage thereof, it is characterized in that, in channel data, open up ancillary data sections specially, to wait in a period of time that the auxiliary data of sending out is assembled in the described ancillary data sections, described service network sends described channel data by wireless operation channel to portable terminal, wherein, described ancillary data sections comprises data segment header and holds N auxiliary data unit of each bar auxiliary data one by one, described data segment header comprises the number N of described auxiliary data unit and the length of each auxiliary data unit wherein, described N is the natural number greater than 1, and N can change.
2. according to the described method of claim 1, it is characterized in that described data segment header (131) also comprises check code.
3. according to the described method of claim 1, it is characterized in that described auxiliary data comprises this auxiliary data type number and particular content.
4. according to the described method of claim 3, it is characterized in that described type comprises captions, picture, file download or IP multicast.
5. according to the described method of claim 1, it is characterized in that described channel data also comprises packet header, described packet header comprise packet header length, ancillary data sections length, be used to guarantee that auxiliary data shows timestamp and the check code of time on screen.
6. according to the described method of claim 5, it is characterized in that described channel data also can comprise video-frequency band, described packet header also comprises video-frequency band length and video parameter collection.
7. according to the described method of claim 5, it is characterized in that described channel data also can comprise audio section, described packet header also comprises audio section length and audio frequency parameter collection.
8. according to each described method of claim 1 to 7, it is characterized in that described method comprises that also portable terminal receives described channel data and take out described auxiliary data one by one from described data segment.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101596582A CN1960520B (en) | 2006-09-30 | 2006-09-30 | Method for transferring auxiliary data in mobile multimedia broadcasting |
| PCT/CN2006/003755 WO2008043212A1 (en) | 2006-09-30 | 2006-12-30 | A method for transferring assistant data in mobile multi-media broadcast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101596582A CN1960520B (en) | 2006-09-30 | 2006-09-30 | Method for transferring auxiliary data in mobile multimedia broadcasting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1960520A CN1960520A (en) | 2007-05-09 |
| CN1960520B true CN1960520B (en) | 2011-02-23 |
Family
ID=38071971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006101596582A Expired - Fee Related CN1960520B (en) | 2006-09-30 | 2006-09-30 | Method for transferring auxiliary data in mobile multimedia broadcasting |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1960520B (en) |
| WO (1) | WO2008043212A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101277316A (en) * | 2008-05-21 | 2008-10-01 | 中兴通讯股份有限公司 | Interactive error correction method and system for document download |
| CN104811749A (en) * | 2015-03-18 | 2015-07-29 | 天脉聚源(北京)传媒科技有限公司 | Multimedia data transmission method and device |
| CN112509590A (en) * | 2020-12-03 | 2021-03-16 | 合肥星空物联信息科技有限公司 | Audio transmission method and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000021246A1 (en) * | 1998-10-05 | 2000-04-13 | Nokia Netwoks Oy | Frame control method and apparatus |
| CN1399462A (en) * | 2001-07-27 | 2003-02-26 | 华为技术有限公司 | Bandwidth-saving phonetic transmission method |
| CN1466385A (en) * | 2002-06-19 | 2004-01-07 | 华为技术有限公司 | Real time receiving and sxtorage method for video signal conference stream medium |
| EP1592259A1 (en) * | 2004-04-30 | 2005-11-02 | Matsushita Electric Industrial Co., Ltd. | Processing auxiliary data of video sequences |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000134591A (en) * | 1998-10-28 | 2000-05-12 | Sony Computer Entertainment Inc | Data generation device/method, data reception device/ method and data communication system/method |
| CN100583880C (en) * | 2003-02-26 | 2010-01-20 | Nxp股份有限公司 | System for broadcasting multimedia content |
| CN1247026C (en) * | 2004-04-30 | 2006-03-22 | 清华大学 | Mobile terminal oriented multimedia broadcasting system and implementing method thereof |
-
2006
- 2006-09-30 CN CN2006101596582A patent/CN1960520B/en not_active Expired - Fee Related
- 2006-12-30 WO PCT/CN2006/003755 patent/WO2008043212A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000021246A1 (en) * | 1998-10-05 | 2000-04-13 | Nokia Netwoks Oy | Frame control method and apparatus |
| CN1399462A (en) * | 2001-07-27 | 2003-02-26 | 华为技术有限公司 | Bandwidth-saving phonetic transmission method |
| CN1466385A (en) * | 2002-06-19 | 2004-01-07 | 华为技术有限公司 | Real time receiving and sxtorage method for video signal conference stream medium |
| EP1592259A1 (en) * | 2004-04-30 | 2005-11-02 | Matsushita Electric Industrial Co., Ltd. | Processing auxiliary data of video sequences |
Non-Patent Citations (1)
| Title |
|---|
| CN 1466385 A,全文. |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008043212A1 (en) | 2008-04-17 |
| CN1960520A (en) | 2007-05-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1972408A (en) | A data transmission method for mobile multimedia broadcasting system | |
| CN100568971C (en) | The transmission code stream of a kind of MPEG-4 is to the real time conversion method of internet stream media alliance stream | |
| CN101350768B (en) | Method for conveying IP packet in broadcast network | |
| CN101222290B (en) | Data transmission method, emission system and terminal in broadcasting system | |
| AU2006231216A1 (en) | Buffering in streaming delivery | |
| CN1972453B (en) | A data flow packaging method of mobile multimedia broadcasting system | |
| CN1972454A (en) | Mobile multimedia broadcasting real-time traffic flow packaging method | |
| CN101202920B (en) | Data sending, transmission method, launching system and terminal in broadcast system | |
| WO2009137972A1 (en) | A method and system for transmitting video-audio in same stream and the corresponding receiving method and device | |
| CN101150383A (en) | IP data transmission method | |
| CN101924742A (en) | Media transmission method and equipment, and media storage method and equipment | |
| CN1960328B (en) | Method for packaging real time stream of mobile multimedia broadcast | |
| CN101272200B (en) | Multimedia stream synchronization caching method and system | |
| CN101179735B (en) | Packaging method of multimedia broadcasting system media data flow | |
| CN1976477B (en) | Mobile multi-media broadcasting data transmitting method | |
| CN1960520B (en) | Method for transferring auxiliary data in mobile multimedia broadcasting | |
| CN100464586C (en) | MPEG1 file real-time playing method based on IP STB | |
| CN104022844B (en) | Data packaging method capable of matching multiple transmission modes and system | |
| CN101193290A (en) | A real time conversion system from MPEG-4 transmission code stream to Internet stream media alliance stream | |
| CN101312531B (en) | Stream service transmission method in broadcast system and stream media frame encapsulation device | |
| CN1976495A (en) | Mobile multimedia broadcasting control information and media information specification transmitting method | |
| CN100463385C (en) | Transmission method for mobile multimedia broadcast electronic service guide data model | |
| CN103024369B (en) | Transmitting terminal, terminal, the system and method for hierarchical coding multiplexing | |
| CN101159667B (en) | Method of performing packet compression to packet data of mobile multimedia broadcasting system | |
| CN101198068A (en) | Auxiliary data encapsulation method for media data flow of multimedia broadcasting system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110223 Termination date: 20190930 |