CN101102506A - A multi-media broadcast data transmission method, device and system - Google Patents
A multi-media broadcast data transmission method, device and system Download PDFInfo
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Abstract
The method comprises: generating and transmitting the broadcast channel frame; said broadcast channel frame comprise at least one multiplexing frame; said multiplexing frame comprises at least one multiplexing subframe; said multiplexing subframe at least comprises a video segment, audio segment and data segment; each video segment, or audio segment or data segment comprises an initial mark; receiving said broadcast channel frame; resolving each multiplexing subframe from the multiplexing frame; resolving each video segment, audio segment and data segment from each multiplexing subframe; the location of each segment is indicated by said initial mark.
Description
Technical field
The present invention relates to Mobile Multimedia Broadcasting, relate in particular to the transmission and the reception of multimedia broadcast data.
Background technology
In the front end system of mobile multimedia, multiplexing function is to finish information encapsulation and arrangements such as audio frequency, video, data, electron service instruction, the broadcast channel frame that generation can transmit on mobile multimedia broadcasting channel, a broadcast channel frame is made of a plurality of multiplexed frames, and a multiplexed frame is made up of multiplex frame head, multiplexed frame payload and filling; The multiplexed frame payload is made up of one or more multiplexed sub frames, can comprise 15 multiplexed sub frames at most.
As shown in Figure 1, the audio frequency of same business substantially stream, video-frequency basic flow and data flow encoded after, by segment encapsulation in multiplexed sub frame, may comprise in video-frequency band, audio section and the data segment 1,2 or all in multiplexed sub frame, supplementary such as electron service instruction, user management is encapsulated in respectively in the different multiplexed sub frames, and the multiplexed sub frame control information is encapsulated in the special-purpose multiplexed frame.
Present announced GY/T 220.2-2006 standard code the multiplexed frame of video, audio frequency, data and control information in China Mobile's multimedia system and the form of multiplexed sub frame.Wherein, multiplexed sub frame is made up of subframe head, video-frequency band, audio section and data segment.Look (sound) frequency range or data segment and form, described the parameter of each load unit in the paragraph header by paragraph header and a plurality of load unit.The concrete structure schematic diagram of looking (sound) frequency range and data segment as shown in Figure 2.Comprise: (for video-frequency band, its load unit is called the video load unit to a paragraph header and n load unit; For audio section, its load unit is called the audio-frequency load unit; For data segment, its load unit is called the data payload unit).Wherein comprise following field in the paragraph header again:
Paragraph header length (12bit);
Reserved field;
The corresponding parameter field of n load unit;
The Cyclic Redundancy Check field.
Because it is all multifactor that the abominable and user of wireless propagation environment is in mobile status etc., can cause the loss of radio transmission, multimedia messages is responsive especially to mistake after overcompression, thus through the multimedia messages after the overcompression when wireless channel is propagated, mistake very easily appears.And the error code of transmission and packet loss can directly influence the identification of receiving terminal to video-frequency band, audio section and data segment.Usually, when receiving terminal identifies video-frequency band appearance mistake, can't continue follow-up audio section and data segment are discerned, and at this moment need whole multiplexed sub frame is all abandoned.And if the subframe head goes wrong in transmission course, receiving terminal can't be known video-frequency band length, audio section length and the data segment, length in this multiplexed sub frame, equally also needs to abandon whole multiplexed sub frame.And the abandoning of multiplexed sub frame makes error rate (the SDU Error Ratio) height of mobile multi-media broadcasting service data cell, and the rating that has influenced the receiving terminal user is experienced.
Summary of the invention
The invention provides a kind of multi-media broadcast data transmission method, by the original position of the section of identifying in video-frequency band, audio section and the data segment that each multiplexed sub frame comprised, to improve the accuracy of receiving terminal decoding.
A kind of multi-media broadcast data transmission method comprises:
Generate and send broadcast channel frame, described broadcast channel frame comprises at least one multiplexed frame, described multiplexed frame comprises at least one multiplexed sub frame, described multiplexed sub frame comprises video-frequency band, audio section or data segment at least, the section of comprising origin identification in the paragraph header of each video-frequency band, audio section or the data segment that is comprised;
Receive described broadcast channel frame, parse each multiplexed sub frame from described multiplexed frame, parse each video-frequency band, audio section or the data segment information that are comprised from each multiplexed sub frame, every section original position is determined by the section origin identification that comprises in this section paragraph header.
A kind of multimedia broadcast data sending method comprises:
Generate broadcast channel frame, described broadcast channel frame comprises at least one multiplexed frame, described multiplexed frame comprises at least one multiplexed sub frame, described multiplexed sub frame comprises video-frequency band, audio section or data segment at least, the section of comprising origin identification in the paragraph header of each video-frequency band, audio section or the data segment that is comprised;
Send the described broadcast channel frame that generates by air interface.
A kind of multimedia broadcast data method of reseptance comprises:
Receive broadcast channel frame;
Resolve the broadcast channel frame that receives, parse video-frequency band, audio section or data segment information that each multiplexed sub frame comprises from each multiplexed frame of described broadcast channel frame, every section original position is determined by the section origin identification that comprises in this section paragraph header.
A kind of multimedia broadcast data transmission system comprises: dispensing device and receiving system;
Described dispensing device is used to generate and send broadcast channel frame; Described broadcast channel frame comprises at least one multiplexed frame, described multiplexed frame comprises at least one multiplexed sub frame, described multiplexed sub frame comprises video-frequency band, audio section or data segment at least, the section of comprising origin identification in the paragraph header of each video-frequency band, audio section or the data segment that is comprised;
Described receiving system is used to receive broadcast channel frame, from the multiplexed frame of described broadcast channel frame, parse each multiplexed sub frame, parse each video-frequency band, audio section or the data segment information that are comprised from each multiplexed sub frame, every section original position is determined by the section origin identification that comprises in this section paragraph header.
A kind of multimedia broadcast data dispensing device comprises: broadcast channel frame generation unit and broadcast channel frame transmitting element;
Described broadcast channel frame generation unit is used to generate broadcast channel frame, and sends the broadcast channel frame transmitting element to; Described broadcast channel frame comprises at least one multiplexed frame, described multiplexed frame comprises at least one multiplexed sub frame, described multiplexed sub frame comprises video-frequency band, audio section or data segment at least, the section of comprising origin identification in the paragraph header of each video-frequency band, audio section or the data segment that is comprised;
The broadcast channel frame transmitting element is used to receive the broadcast channel frame that described broadcast channel frame generation unit generates, and sends described broadcast channel frame.
A kind of multimedia broadcast data receiving system comprises: broadcast channel frame receiving element and broadcast channel frame resolution unit;
Described broadcast channel frame receiving element is used to receive broadcast channel frame, and sends described broadcast channel frame resolution unit to;
Described broadcast channel frame resolution unit, be used for parsing each multiplexed sub frame from the multiplexed frame of described broadcast channel frame, parse each video-frequency band, audio section or the data segment information that are comprised from each multiplexed sub frame, every section original position is determined by the section origin identification that comprises in this section paragraph header.
The multi-media broadcast data transmission method that provides according to the embodiment of the invention, in the broadcast channel frame that generates, comprise at least one multiplexed frame, described multiplexed frame comprises at least one multiplexed sub frame, described multiplexed sub frame comprises video-frequency band, audio section or data segment at least, the section of comprising origin identification in the paragraph header of each video-frequency band, audio section or the data segment that is comprised.After receiving terminal receives described broadcast channel frame, from described multiplexed frame, parse each multiplexed sub frame, from each multiplexed sub frame, parse the section origin identification that comprises in each video-frequency band, audio section or the data segment paragraph header, receive and resolve corresponding each video-frequency band, audio section or data segment information.Like this, even receiving terminal receives or parse error a certain video-frequency band, audio section or data segment, only need this error burst of degree of losing, find the origin identification of next section again, receive and resolve next video-frequency band, audio section or data segment and get final product, can not cause abandoning the whole packet at this error burst place, thereby improve the accuracy that receiving terminal is decoded, the corresponding efficiency of transmission that improves multimedia broadcast data, the rating that has promoted the client is experienced and satisfaction.
Description of drawings
Fig. 1 is a Mobile Multimedia Broadcasting information processing schematic diagram in the prior art;
Fig. 2 is for looking the concrete structure schematic diagram of (sound) frequency range in the prior art;
The concrete structure schematic diagram of looking (sound) frequency range that Fig. 3 provides for the embodiment of the invention 1;
The concrete structure schematic diagram of looking (sound) frequency range that Fig. 4 provides for the embodiment of the invention 2;
The concrete structure schematic diagram of looking (sound) frequency range that Fig. 5 provides for the embodiment of the invention 3;
The concrete structure schematic diagram of looking (sound) frequency range that Fig. 6 provides for the embodiment of the invention 4;
The concrete structure schematic diagram of looking (sound) frequency range that Fig. 7 provides for the embodiment of the invention 5;
The concrete structure schematic diagram of looking (sound) frequency range that Fig. 8 provides for the embodiment of the invention 6;
The concrete structure schematic diagram of looking (sound) frequency range that Fig. 9 provides for the embodiment of the invention 7;
The concrete structure schematic diagram of looking (sound) frequency range that Figure 10 provides for the embodiment of the invention 8;
The multimedia broadcast data transmission system structural representation that Figure 11 provides for the embodiment of the invention;
The multimedia broadcast data dispensing device structural representation that Figure 12 provides for the embodiment of the invention;
The multimedia broadcast data receiving system structural representation that Figure 13 provides for the embodiment of the invention.
Embodiment
Multimedia broadcast data sending and receiving method provided by the invention is described in detail with specific embodiment below in conjunction with accompanying drawing.
Embodiment 1:
In the paragraph header of each video-frequency band, audio section or the data segment that each multiplexed sub frame comprised of broadcast channel frame, increase a section origin identification.
Referring to Fig. 3, be example with video (audio frequency) section, define field of increase in the paragraph header of each video (audio frequency) section, called after " section origin identification " in prior art.The length of this section origin identification can be set at the integral words joint, and for example the length of section origin identification is that 1 byte takies 8 bits.
After receiving terminal receives broadcast channel frame, from multiplexed frame, parse each multiplexed sub frame, from each multiplexed sub frame, parse the section origin identification that comprises in each video-frequency band, audio section or the data segment paragraph header, according to the section origin identification that parses, determine the beginning of a section, receive and resolve this video-frequency band, audio section or data segment information.
In the paragraph header of video-frequency band, audio section and data segment, the section origin identification that comprises can be identical, also can be different.
A preferred example, the character string of section origin identification value for setting is for video-frequency band, audio section and data segment are set same character string; Perhaps set different character strings respectively for video-frequency band, audio section and data segment.
Embodiment 2:
In the paragraph header of each video-frequency band, audio section or the data segment that each multiplexed sub frame comprised of broadcast channel frame, increase section origin identification and load unit quantity information.
Referring to Fig. 4, be example with video (audio frequency) section, this embodiment 2 further increases " load unit quantity information " field in the paragraph header of each video-frequency band, audio section or data segment that each multiplexed sub frame comprised on the basis of embodiment 1.
If present segment is video-frequency band, then in the paragraph header of this video-frequency band, increase the load unit quantity information, indicate the quantity of the video unit that this video-frequency band comprises;
If present segment is audio section, then in the paragraph header of this audio section, increase the load unit quantity information, indicate the quantity of the audio unit that this audio section comprises;
If present segment is data segment, then in the paragraph header of this data segment, increase the load unit quantity information, indicate the quantity of the data cell that this data segment comprises.
After receiving terminal receives described broadcast channel frame, except determining according to the section origin identification the original position of a section, also determine the video unit quantity that corresponding video-frequency band comprises according to the load unit quantity information that comprises in the paragraph header, the data cell quantity that audio unit quantity that the diaphone frequency range is comprised and corresponding data section are comprised, thereby receive the video unit data of respective numbers, the audio unit data of respective numbers or the data unit data of respective numbers are also resolved, and realize complete, parse each video-frequency band exactly, audio section or data segment information.
A preferred example, load unit quantity information can be set at the integral words joint, for example are set at 1 byte and take 8 bits.
A preferred example, the load unit quantity information is as the 3rd field of corresponding paragraph header; First field section of being origin identification field of corresponding paragraph header, second field of corresponding paragraph header is the paragraph header length field that defines in the prior art, all the other fields are same as the prior art in the corresponding paragraph header.Certainly, load unit quantity information field also can be arranged in other position in the paragraph header, and the present invention does not limit this.
Embodiment 3:
In the paragraph header of each video-frequency band, audio section or the data segment that each multiplexed sub frame comprised of broadcast channel frame, increase a section origin identification, and increase the load head in each load unit in each video-frequency band, audio section and data segment, in order to original position and the load length that indicates this load unit.
Referring to Fig. 5, be example with video (audio frequency) section, this embodiment 3 further increases the load head in each load unit in each video-frequency band, audio section and data segment on the basis of embodiment 1.
For example, comprise following field in the load head of increase:
Initial code is used to indicate the original position of a load unit;
Marker bit is used to indicate whether this load unit is last load unit of carrying video, audio frequency or data message;
Loadtype is used to indicate this load unit institute data carried by data stream type; Data stream type comprises video flowing type and/or audio stream type; Concrete video flowing type and audio stream type can be various existing types of the prior art;
Load length, the byte number of video, audio frequency and the data message that is used to indicate this load unit to carry;
Sequence number is used for indicating the sequence number of this load unit section under it, perhaps indicates the sequence number of this load unit in each load unit of the same data stream type of carrying;
Cyclic Redundancy Check is used for described load head is carried out verification.
A preferred example, the load head is according to each field of sequence arrangement of initial code, marker bit, loadtype, load length, sequence number and cyclic redundancy check (CRC).Certainly, should be except initial code as first field, putting in order of all the other each fields can be set arbitrarily, and the present invention does not limit this.
A preferred example, load head take 48 bits altogether, wherein:
Institute's initial code takies 8 bits;
Described marker bit takies 1 bit;
Described loadtype takies 7 bits;
Described load length takies 8 bits;
Described sequence number takies 8 bits;
Described cyclic redundancy check (CRC) takies 16 bits.
The shared bit of above-mentioned each field only is that the present invention does not limit this for example.
Receiving terminal parses the load head from each load unit of each video-frequency band, audio section and data segment, initial code according to the indication original position that comprises in this load head is distinguished each load unit, determine according to marker bit whether this load unit is last load unit, what determine this load unit carrying according to loadtype is video flowing or audio stream, and, obtain video flowing (audio stream) data volume of respective length and resolve this load unit according to the load length that comprises in the load head.Thereby guaranteed each load unit of accurate differentiation, and received and resolve by the length of each load unit.Also determine according to sequence number whether this load unit is the load unit that receives according to the order of sequence, judge according to cyclic redundancy check (CRC) whether the load header that receives is correct.When a load unit receives or resolves the appearance mistake, only need abandon this wrong load unit, obtain next load unit according to initial code again, receive and resolve next load unit and get final product, can not cause abandoning whole video section, audio section or the data segment at this wrong load unit place, thereby improved the accuracy of receiving terminal decoding, the corresponding efficiency of transmission that improves multi-medium data.
Embodiment 4:
Referring to Fig. 6, be example with video (audio frequency) section, this embodiment 4 further increases the load head in each load unit in each video-frequency band, audio section and data segment on the basis of embodiment 2.
The specifying information of each field that the load head that increases is comprised repeats no more as described in the embodiment 3.
Embodiment 5:
Referring to Fig. 7, be example with video (audio frequency) section, this embodiment 5 further comprises the unit and finishes sign, in order to indicate the end position of this load unit on the basis of embodiment 3 in each load unit in each video-frequency band, audio section and data segment.
Receiving terminal parses the unit and finishes sign from each load unit of each video-frequency band, audio section and data segment, finish sign according to the unit and distinguish each load unit.Further strengthened the accurate location of each load unit.Make when a load unit receives or resolve the appearance mistake, only need abandon this wrong load unit, obtain next load unit according to initial code again, receive and resolve next load unit and get final product, can not cause abandoning whole video section, audio section or the data segment at this wrong load unit place.
Embodiment 6:
Referring to Fig. 8, be example with video (audio frequency) section, this embodiment 6 further comprises the unit and finishes sign, in order to indicate the end position of this load unit on the basis of embodiment 4 in each load unit in each video-frequency band, audio section and data segment.
Receiving terminal parses the unit and finishes sign from each load unit of each video-frequency band, audio section and data segment, finish sign according to the unit and distinguish each load unit.Further strengthened the accurate location of each load unit.Make when a load unit receives or resolve the appearance mistake, only need abandon this wrong load unit, obtain next load unit according to initial code again, receive and resolve next load unit and get final product, can not cause abandoning whole video section, audio section or the data segment at this wrong load unit place.
Embodiment 7:
Referring to Fig. 9, with video (audio frequency) section is example, this embodiment 7 is on the basis of embodiment 5, further in the paragraph header of each video-frequency band, audio section or data segment that each multiplexed sub frame comprised, also comprise hangover indication information field, also comprise unit end sign in order to indicate each load unit in corresponding video-frequency band, audio section and the data segment.
After receiving terminal parses the hangover indication information that comprises in the corresponding paragraph header of video-frequency band, audio section or data segment, can learn that also comprising the unit in each load unit in each video-frequency band, audio section or the data segment finishes sign, thereby can finish sign by matching corresponding unit, determine the end position of each load unit.
A preferred example, this hangover indication information fields account are with 1 bit, for example:
Represent also to comprise in each load unit in each video-frequency band, audio section or the data segment unit with " 1 " and finish sign;
Represent not comprise in each load unit in each video-frequency band, audio section or the data segment unit with " 0 " and finish sign.
Embodiment 8:
Referring to Figure 10, with video (audio frequency) section is example, this embodiment 8 is on the basis of embodiment 6, further in the paragraph header of each video-frequency band, audio section or data segment that each multiplexed sub frame comprised, also comprise hangover indication information field, also comprise unit end sign in order to indicate each load unit in corresponding video-frequency band, audio section and the data segment.
After receiving terminal parses the hangover indication information that comprises in the corresponding paragraph header of video-frequency band, audio section or data segment, can learn that also comprising the unit in each load unit in each video-frequency band, audio section or the data segment finishes sign, thereby can finish sign by matching corresponding unit, determine the end position of each load unit.
A preferred example, this hangover indication information fields account are with 1 bit, for example:
Represent also to comprise in each load unit in each video-frequency band, audio section or the data segment unit with " 1 " and finish sign;
Represent not comprise in each load unit in each video-frequency band, audio section or the data segment unit with " 0 " and finish sign.
More than with specific embodiment the sending and receiving method of multimedia broadcast data is described in detail.The sending and receiving method of the multimedia broadcast data that provides according to the above embodiment of the present invention, the present invention also provides a kind of multimedia broadcast data dispensing device, multimedia broadcast data receiving system and multimedia broadcast data transmission system.
Referring to Figure 11, the multimedia broadcast data transmission system for the embodiment of the invention provides comprises: dispensing device 10 and receiving system 20;
Described dispensing device 10 is used to generate and send broadcast channel frame; Described broadcast channel frame comprises at least one multiplexed frame, described multiplexed frame comprises at least one multiplexed sub frame, described multiplexed sub frame comprises video-frequency band, audio section or data segment at least, the section of comprising origin identification in the paragraph header of each video-frequency band, audio section or the data segment that is comprised.
Broadcast channel frame generation unit 101 is used to generate broadcast channel frame, and sends broadcast channel frame transmitting element 102 to;
Broadcast channel frame transmitting element 102 is used to receive the broadcast channel frame that described broadcast channel frame generation unit 101 generates, and sends described broadcast channel frame.
Described receiving system 20 is used to receive broadcast channel frame, from the multiplexed frame of described broadcast channel frame, parse each multiplexed sub frame, parse each video-frequency band, audio section or the data segment information that are comprised from each multiplexed sub frame, every section original position is determined by the section origin identification that comprises in this section paragraph header.
Receiving system 20 specifically comprises: broadcast channel frame receiving element 201 and broadcast channel frame resolution unit 202; Wherein:
Broadcast channel frame receiving element 201 is used to receive broadcast channel frame, and sends described broadcast channel frame resolution unit 202 to;
Broadcast channel frame resolution unit 202 is used for parsing each multiplexed sub frame from the multiplexed frame of described broadcast channel frame, parses each video-frequency band, audio section or the data segment information that are comprised from each multiplexed sub frame.
The present invention also provides a kind of multimedia broadcast data dispensing device 10, and its structural representation comprises as shown in figure 12: broadcast channel frame generation unit 101 and broadcast channel frame transmitting element 102; Wherein:
Broadcast channel frame generation unit 101 is used to generate broadcast channel frame, and sends broadcast channel frame transmitting element 102 to;
Broadcast channel frame transmitting element 102 is used to receive the broadcast channel frame that broadcast channel frame generation unit 101 generates, and sends described broadcast channel frame.
Described broadcast channel frame generation unit 101 comprises that first generates subelement 1011, is used to generate broadcast channel frame, and sends broadcast channel frame transmitting element 102 to; Described broadcast channel frame comprises at least one multiplexed frame, described multiplexed frame comprises at least one multiplexed sub frame, described multiplexed sub frame comprises video-frequency band, audio section or data segment at least, the section of comprising origin identification in the paragraph header of each video-frequency band, audio section or the data segment that is comprised.
Broadcast channel frame generation unit 101 may comprise that also second generates subelement 1012; The second generation subelement 1012 is used for comprising the load unit quantity information at the paragraph header of each video-frequency band, audio section or the data segment of the broadcast channel frame of the first generation subelement, 1011 generations; The data cell quantity of indicating video unit quantity that corresponding video-frequency band comprises, audio unit quantity that the diaphone frequency range is comprised and corresponding data section to be comprised with the load unit quantity information.
Broadcast channel frame generation unit 101 may comprise that also the 3rd generates subelement 1013; The 3rd generates subelement 1013 is used for comprising the load head at first each load unit that generates each video-frequency band, audio section or the data segment that broadcast channel frame comprised of subelement 1011 generations; Indicate the original position and the load length of this load unit with the load head.
Broadcast channel frame generation unit 101 may comprise that also the 4th generates subelement 1014, is used for comprising the load head at second each load unit that generates each video-frequency band, audio section or the data segment that broadcast channel frame comprised of subelement 1012 generations.
Broadcast channel frame generation unit 101 may comprise that also the 5th generates subelement 1015, be used for comprising the unit and finish sign, finish the end position that sign indicates this load unit with the unit at the 3rd each load unit that generates each video-frequency band, audio section or the data segment of subelement 1013 generations.
Broadcast channel frame generation unit 101 may comprise that also the 6th generates subelement 1016, be used for comprising the unit and finish sign, finish the end position that sign indicates this load unit with the unit at the 4th each load unit that generates each video-frequency band, audio section or the data segment of subelement 1014 generations.
Broadcast channel frame generation unit 101 may comprise that also the 7th generates subelement 1017, be used for also comprising hangover indication information field, also comprise unit end sign with each load unit in the indication of hangover indication information corresponding video-frequency band, audio section and the data segment at the 6th paragraph header that generates each video-frequency band, audio section or the data segment of subelement 1016 generations.
The present invention also provides a kind of multimedia broadcast data receiving system 20, and its structural representation comprises as shown in figure 13: broadcast channel frame receiving element 201 and broadcast channel frame resolution unit 202;
Described broadcast channel frame receiving element 201 is used to receive broadcast channel frame, and sends described broadcast channel frame resolution unit 202 to;
Broadcast channel frame resolution unit 202 is used for parsing each multiplexed sub frame from the multiplexed frame of described broadcast channel frame, parses each video-frequency band, audio section or the data segment information that are comprised from each multiplexed sub frame.
Broadcast channel frame resolution unit 202 comprises that first resolves subelement 2021, be used for parsing each multiplexed sub frame from the multiplexed frame of described broadcast channel frame, parse each video-frequency band, audio section or the data segment information that are comprised from each multiplexed sub frame, every section original position is determined by the section origin identification that comprises in this section paragraph header.
Broadcast channel frame resolution unit 202 may comprise that also second resolves subelement 2022, be used for resolving video-frequency band, audio section and the data segment information that subelement 2021 parses according to first, further parse the load unit quantity information that is comprised in video-frequency band, audio section, the corresponding paragraph header of data segment, determine the data cell quantity that video unit quantity that corresponding video-frequency band comprises, audio unit quantity that the diaphone frequency range is comprised and corresponding data section are comprised, parse each video-frequency band, audio section or data segment information.
Broadcast channel frame resolution unit 202 may comprise that also the 3rd resolves subelement 2023, be used for resolving video-frequency band, audio section and the data segment information that subelement 2021 parses according to first, from each load unit of each video-frequency band, audio section and data segment, parse the load head, initial code according to the indication original position that comprises in the described load head is distinguished each load unit, and, obtain the data volume of respective length and resolve this load unit according to the load length that comprises in the described load head.
Broadcast channel frame resolution unit 202 may comprise that also the 4th resolves subelement 2024, be used for resolving video-frequency band, audio section and the data segment information that subelement 2021 parses according to first, from each load unit of each video-frequency band, audio section and data segment, parse the unit and finish sign, finish sign according to described unit and distinguish each load unit.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (31)
1, a kind of multi-media broadcast data transmission method is characterized in that, comprising:
Generate and send broadcast channel frame, described broadcast channel frame comprises at least one multiplexed frame, described multiplexed frame comprises at least one multiplexed sub frame, described multiplexed sub frame comprises video-frequency band, audio section or data segment at least, the section of comprising origin identification in the paragraph header of each video-frequency band, audio section or the data segment that is comprised;
Receive described broadcast channel frame, parse each multiplexed sub frame from described multiplexed frame, parse each video-frequency band, audio section or the data segment information that are comprised from each multiplexed sub frame, every section original position is determined by the section origin identification that comprises in this section paragraph header.
2, the method for claim 1 is characterized in that, in the paragraph header of described video-frequency band, audio section and data segment, the described section origin identification that comprises is identical or different.
3, method as claimed in claim 2 is characterized in that, the character string of described section origin identification for setting.
4, the method for claim 1, it is characterized in that, in described paragraph header, also comprise the load unit quantity information, the data cell quantity that is comprised in order to the video unit quantity of indicating corresponding video-frequency band to comprise, audio unit quantity that the diaphone frequency range is comprised and corresponding data section;
After receiving terminal receives described broadcast channel frame, also determine the data cell quantity that video unit quantity that corresponding video-frequency band comprises, audio unit quantity that the diaphone frequency range is comprised and corresponding data section are comprised, parse each video-frequency band, audio section or data segment information according to described load unit quantity information.
As claim 1 or 4 described methods, it is characterized in that 5, each load unit in described video-frequency band, audio section and the data segment also comprises the load head, in order to original position and the load length that indicates this load unit.
6, method as claimed in claim 5 is characterized in that, comprises following field in the described load head:
Initial code is used to indicate the original position of a load unit;
Marker bit is used to indicate whether this load unit is last load unit of carrying video, audio frequency or data message;
Loadtype is used to indicate this load unit institute data carried by data stream type;
Load length, the byte number of video, audio frequency and the data message that is used to indicate this load unit to carry;
Sequence number is used for indicating the sequence number of this load unit section under it, perhaps indicates the sequence number of this load unit in each load unit of the same data stream type of carrying;
Cyclic redundancy check (CRC) is used for described load head is carried out verification.
7, method as claimed in claim 5 is characterized in that, each load unit in described video-frequency band, audio section and the data segment also comprises the unit and finishes sign, in order to indicate the end position of this load unit.
8, method as claimed in claim 7, it is characterized in that, also comprise the hangover indication information in the paragraph header of each video-frequency band, audio section or data segment that each multiplexed sub frame comprised, also comprise described unit end sign in order to indicate each load unit in described video-frequency band, audio section and the data segment.
9, a kind of multimedia broadcast data sending method is characterized in that, comprising:
Generate broadcast channel frame, described broadcast channel frame comprises at least one multiplexed frame, described multiplexed frame comprises at least one multiplexed sub frame, described multiplexed sub frame comprises video-frequency band, audio section or data segment at least, the section of comprising origin identification in the paragraph header of each video-frequency band, audio section or the data segment that is comprised;
Send the described broadcast channel frame that generates by air interface.
10, method as claimed in claim 9 is characterized in that, in the paragraph header of described video-frequency band, audio section and data segment, the described section origin identification that comprises is identical or different.
11, method as claimed in claim 10 is characterized in that, the character string of described section origin identification for setting.
12, method as claimed in claim 9, it is characterized in that, in described paragraph header, also comprise the load unit quantity information, the data cell quantity that is comprised in order to the video unit quantity of indicating corresponding video-frequency band to comprise, audio unit quantity that the diaphone frequency range is comprised and corresponding data section;
After receiving terminal receives described broadcast channel frame, also determine the data cell quantity that video unit quantity that corresponding video-frequency band comprises, audio unit quantity that the diaphone frequency range is comprised and corresponding data section are comprised, parse each video-frequency band, audio section or data segment information according to described load unit quantity information.
As claim 9 or 12 described methods, it is characterized in that 13, each load unit in described video-frequency band, audio section and the data segment also comprises the load head, in order to original position and the load length that indicates this load unit.
14, method as claimed in claim 13 is characterized in that, comprises following field in the described load head:
Initial code is used to indicate the original position of a load unit;
Marker bit is used to indicate whether this load unit is last load unit of carrying video, audio frequency or data message;
Loadtype is used to indicate this load unit institute data carried by data stream type;
Load length, the byte number of video, audio frequency and the data message that is used to indicate this load unit to carry;
Sequence number is used for indicating the sequence number of this load unit section under it, perhaps indicates the sequence number of this load unit in each load unit of the same data stream type of carrying;
Cyclic redundancy check (CRC) is used for described load head is carried out verification.
15, method as claimed in claim 13 is characterized in that, each load unit in described video-frequency band, audio section and the data segment also comprises the unit and finishes sign, in order to indicate the end position of this load unit.
16, method as claimed in claim 15, it is characterized in that, also comprise the hangover indication information in the paragraph header of each video-frequency band, audio section or data segment that each multiplexed sub frame comprised, also comprise described unit end sign in order to indicate each load unit in described video-frequency band, audio section and the data segment.
17, a kind of multimedia broadcast data method of reseptance is characterized in that, comprising:
Receive broadcast channel frame;
Resolve the broadcast channel frame that receives, parse video-frequency band, audio section or data segment information that each multiplexed sub frame comprises from each multiplexed frame of described broadcast channel frame, every section original position is determined by the section origin identification that comprises in this section paragraph header.
18, method as claimed in claim 17 is characterized in that, also comprises:
Parse the load unit quantity information in the paragraph header of each video-frequency band, audio section or the data segment that from each multiplexed sub frame, is comprised, determine the data cell quantity that video unit quantity that corresponding video-frequency band comprises, audio unit quantity that the diaphone frequency range is comprised and corresponding data section are comprised, parse each video-frequency band, audio section or data segment information.
19, as claim 17 or 18 described methods, it is characterized in that, also comprise:
From each load unit of each video-frequency band, audio section and data segment, parse the load head, initial code according to the indication original position that comprises in the described load head is distinguished each load unit, and, obtain the data volume of respective length and resolve this load unit according to the load length that comprises in the described load head.
20, method as claimed in claim 19 is characterized in that, also comprises:
From each load unit of each video-frequency band, audio section and data segment, parse the unit and finish sign, finish sign according to described unit and distinguish each load unit.
21, a kind of multimedia broadcast data transmission system is characterized in that, comprising: dispensing device and receiving system;
Described dispensing device is used to generate and send broadcast channel frame; Described broadcast channel frame comprises at least one multiplexed frame, described multiplexed frame comprises at least one multiplexed sub frame, described multiplexed sub frame comprises video-frequency band, audio section or data segment at least, the section of comprising origin identification in the paragraph header of each video-frequency band, audio section or the data segment that is comprised;
Described receiving system is used to receive broadcast channel frame, from the multiplexed frame of described broadcast channel frame, parse each multiplexed sub frame, parse each video-frequency band, audio section or the data segment information that are comprised from each multiplexed sub frame, every section original position is determined by the section origin identification that comprises in this section paragraph header.
22, system as claimed in claim 21 is characterized in that, described dispensing device comprises: broadcast channel frame generation unit and broadcast channel frame transmitting element; Wherein:
The broadcast channel frame generation unit is used to generate broadcast channel frame, and sends the broadcast channel frame transmitting element to;
The broadcast channel frame transmitting element is used to receive the broadcast channel frame that described broadcast channel frame generation unit generates, and sends described broadcast channel frame to described receiving system;
Described receiving system comprises: broadcast channel frame receiving element and broadcast channel frame resolution unit; Wherein:
The broadcast channel frame receiving element is used to receive broadcast channel frame, and sends described broadcast channel frame resolution unit to;
The broadcast channel frame resolution unit is used for parsing each multiplexed sub frame from the multiplexed frame of described broadcast channel frame, parses each video-frequency band, audio section or the data segment information that are comprised from each multiplexed sub frame.
23, a kind of multimedia broadcast data dispensing device is characterized in that, comprising: broadcast channel frame generation unit and broadcast channel frame transmitting element;
Described broadcast channel frame generation unit comprises that first generates subelement, is used to generate broadcast channel frame, and sends the broadcast channel frame transmitting element to; Described broadcast channel frame comprises at least one multiplexed frame, described multiplexed frame comprises at least one multiplexed sub frame, described multiplexed sub frame comprises video-frequency band, audio section or data segment at least, the section of comprising origin identification in the paragraph header of each video-frequency band, audio section or the data segment that is comprised;
The broadcast channel frame transmitting element is used to receive the broadcast channel frame that described broadcast channel frame generation unit generates, and sends described broadcast channel frame.
24, dispensing device as claimed in claim 23 is characterized in that, described broadcast channel frame generation unit also comprises:
Second generates subelement, is used for comprising the load unit quantity information at described first paragraph header that generates each video-frequency band, audio section or the data segment of the broadcast channel frame that subelement generates; The data cell quantity of indicating video unit quantity that corresponding video-frequency band comprises, audio unit quantity that the diaphone frequency range is comprised and corresponding data section to be comprised with the load unit quantity information.
25, dispensing device as claimed in claim 24 is characterized in that, described broadcast channel frame generation unit also comprises:
The 4th generates subelement, is used for comprising the load head at described second each load unit that generates each video-frequency band, audio section or the data segment that broadcast channel frame comprised of subelement generation.
26, dispensing device as claimed in claim 25 is characterized in that, described broadcast channel frame generation unit also comprises:
The 6th generates subelement, is used for comprising the unit at the described the 4th each load unit that generates each video-frequency band, audio section or the data segment of subelement generation and finishes sign, finishes the end position that sign indicates this load unit with the unit.
27, dispensing device as claimed in claim 26 is characterized in that, described broadcast channel frame generation unit also comprises:
The 7th generates subelement, be used for also comprising hangover indication information field, also comprise unit end sign with each load unit in the indication of hangover indication information corresponding video-frequency band, audio section and the data segment at the described the 6th paragraph header that generates each video-frequency band, audio section or the data segment of subelement generation.
28, dispensing device as claimed in claim 23 is characterized in that, described broadcast channel frame generation unit also comprises:
The 3rd generates subelement, is used for comprising the load head at described first each load unit that generates each video-frequency band, audio section or the data segment that broadcast channel frame comprised of subelement generation; Indicate the original position and the load length of this load unit with the load head.
29, dispensing device as claimed in claim 28 is characterized in that, described broadcast channel frame generation unit also comprises:
The 5th generates subelement, is used for comprising the unit at the 3rd each load unit that generates each video-frequency band, audio section or the data segment of subelement generation and finishes sign, finishes the end position that sign indicates this load unit with the unit.
30, a kind of multimedia broadcast data receiving system is characterized in that, comprising: broadcast channel frame receiving element and broadcast channel frame resolution unit;
Described broadcast channel frame receiving element is used to receive broadcast channel frame, and sends described broadcast channel frame resolution unit to;
Described broadcast channel frame resolution unit comprises that first resolves subelement, be used for parsing each multiplexed sub frame from the multiplexed frame of described broadcast channel frame, parse each video-frequency band, audio section or the data segment information that are comprised from each multiplexed sub frame, every section original position is determined by the section origin identification that comprises in this section paragraph header.
31, receiving system as claimed in claim 30, it is characterized in that, described broadcast channel frame resolution unit comprises that also second resolves subelement, be used for resolving the video-frequency band that subelement parses according to described first, audio section and data segment information, further parse video-frequency band, audio section, the load unit quantity information that is comprised in the corresponding paragraph header of data segment, determine the video unit quantity that corresponding video-frequency band comprises, the data cell quantity that audio unit quantity that the diaphone frequency range is comprised and corresponding data section are comprised parses each video-frequency band, audio section or data segment information; And/or
The broadcast channel frame resolution unit comprises that also the 3rd resolves subelement, be used for resolving video-frequency band, audio section and the data segment information that subelement parses according to described first, from each load unit of each video-frequency band, audio section and data segment, parse the load head, initial code according to the indication original position that comprises in the described load head is distinguished each load unit, and, obtain the data volume of respective length and resolve this load unit according to the load length that comprises in the described load head; And/or
The broadcast channel frame resolution unit comprises that also the 4th resolves subelement, be used for resolving video-frequency band, audio section and the data segment information that subelement parses according to described first, from each load unit of each video-frequency band, audio section and data segment, parse the unit and finish sign, finish sign according to described unit and distinguish each load unit.
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| CN 200710119847 CN101102506A (en) | 2007-08-01 | 2007-08-01 | A multi-media broadcast data transmission method, device and system |
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| CN 200710119847 CN101102506A (en) | 2007-08-01 | 2007-08-01 | A multi-media broadcast data transmission method, device and system |
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| CN101335884B (en) * | 2008-07-21 | 2010-06-09 | 深圳市同洲电子股份有限公司 | Multimedia data acquiring method and multimedia equipment |
| CN101409808B (en) * | 2008-10-15 | 2010-10-13 | 北京创毅视讯科技有限公司 | Method and apparatus for re-sampling audio, and digital television chip |
| WO2010121411A1 (en) * | 2009-04-20 | 2010-10-28 | 华为技术有限公司 | Method and apparatus for transmitting data |
| CN101924688A (en) * | 2009-06-17 | 2010-12-22 | 中兴通讯股份有限公司 | Uplink bandwidth allocation method and device |
| CN102164349A (en) * | 2010-02-23 | 2011-08-24 | Lg电子株式会社 | Mobile terminal and broadcast method using the same |
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| WO2016045472A1 (en) * | 2014-09-26 | 2016-03-31 | 电信科学技术研究院 | Method and device for data transmission on unlicensed frequency band |
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| CN101409808B (en) * | 2008-10-15 | 2010-10-13 | 北京创毅视讯科技有限公司 | Method and apparatus for re-sampling audio, and digital television chip |
| CN101505303B (en) * | 2009-03-16 | 2011-10-05 | 北京创毅视讯科技有限公司 | Method, terminal and system for implementing interactive service |
| WO2010121411A1 (en) * | 2009-04-20 | 2010-10-28 | 华为技术有限公司 | Method and apparatus for transmitting data |
| CN101924688A (en) * | 2009-06-17 | 2010-12-22 | 中兴通讯股份有限公司 | Uplink bandwidth allocation method and device |
| CN101924688B (en) * | 2009-06-17 | 2016-08-24 | 中兴通讯股份有限公司 | Uplink bandwidth allocation method and device |
| CN102164349A (en) * | 2010-02-23 | 2011-08-24 | Lg电子株式会社 | Mobile terminal and broadcast method using the same |
| CN103458269B (en) * | 2012-05-28 | 2017-01-25 | 中国移动通信集团公司 | Mobile multimedia service access method, hotspot server and mobile multimedia service system |
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| CN103269319A (en) * | 2013-04-27 | 2013-08-28 | 北京创毅讯联科技股份有限公司 | Method, device and system for data transmission |
| WO2016045472A1 (en) * | 2014-09-26 | 2016-03-31 | 电信科学技术研究院 | Method and device for data transmission on unlicensed frequency band |
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| CN109617891A (en) * | 2018-12-26 | 2019-04-12 | 北京数码视讯技术有限公司 | Code stream transmission method and device |
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