CN101426189B - Method and system for additional information transmission - Google Patents
Method and system for additional information transmission Download PDFInfo
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- CN101426189B CN101426189B CN200810227787XA CN200810227787A CN101426189B CN 101426189 B CN101426189 B CN 101426189B CN 200810227787X A CN200810227787X A CN 200810227787XA CN 200810227787 A CN200810227787 A CN 200810227787A CN 101426189 B CN101426189 B CN 101426189B
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Abstract
The present invention discloses a method which is used for transmitting additional information and comprises the following procedures: receiving service frame, or coding the service information for generating service frame; replacing the information at the secondary bit information of the service frame with additional information for obtaining the service frame carrying the additional information, and transmitting the service frame carrying the additional information; extracting the additional information in the received service frame carrying the additional information, filling 0 or 1 at the position of secondary bit for obtaining the resumed service frame, and retransmitting or decoding the resumed service frame. The invention discloses a system which is used for transmitting the additional information and comprises an additional information source, an information substitution module, an additional information target end and an information extraction module. The method and system according to the invention can complete the transmission of the additional information and guarantee the communication quality of the basic service without additionally establishing a signal channel.
Description
Technical field
The present invention relates to wireless communication technology, relate in particular to a kind of method and system of additional information transmission.
Background technology
In mobile communication system, considerable application scenarios requires portable terminal in basic service types such as operation voice, video, data, transmit some data different with the current business data type to core net, these data different with the current business data type are additional information.For example: the positioning service of some type, require terminal in voice call, the information that can transmit relevant base station is to core net, as the parameter of location Calculation; In some cryptographic communication system, portable terminal is in order to finish the encryption and decryption to traffic frame, and timing transmitting synchronous data are carried out cryptosync between needs and the information source.Be used for the requirement of above-mentioned application scenarios at present, realize that the method for additional information transmission can reduce following two kinds:
Method one: data are packaged into signaling according to the frame format of air interface, and remove the current business frame, send described signaling; The method is transmitted when frequent in additional information, can be because of abandoning the communication quality that too much traffic frame has a strong impact on basic service, and then cause distortions such as voice or video.
Method two: adopt the voice and packet data concurrent service additional information transmission; The method need be set up special Channel Transmission additional information, the channel resource that waste is valuable, especially when the source of additional information end or destination are portable terminal, adopt the method to realize transmission of Additional Information, described portable terminal also needs to support voice and packet data concurrent service, and support that at present the terminal of voice and packet data concurrent service is also considerably less, therefore, the method at present can't extensive use.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method and system of additional information transmission, does not need additionally to set up channel and promptly can finish transmission of Additional Information, and guarantee the communication quality of basic service.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of method of additional information transmission, this method comprises:
Information with the secondary bit of additional information substitution service frame obtains carrying the additional information traffic frame, and sends and carry the additional information traffic frame, a described complete traffic frame that carries the additional information traffic frame for this transmission;
Extract received additional information of carrying in the additional information traffic frame, fill in secondary bit, the traffic frame that is restored, and transmit or decoding recovers traffic frame.
Further, the information of described secondary bit with additional information substitution service frame obtains carrying the additional information traffic frame, and sends and carry the additional information traffic frame and specifically comprise:
According to the Bit Allocation in Discrete of the encryption algorithm of described traffic frame, find out the secondary bit of traffic frame;
Information with the alternative described secondary bit of finding out of additional information obtains carrying the additional information traffic frame;
Generate additional information traffic frame indication signaling;
Send described additional information traffic frame indication signaling by signalling path, and carry the additional information traffic frame by the service channel transmission.
Further, described extraction is received comprises before carrying additional information in the additional information traffic frame:
According to the additional information traffic frame indication signaling that receives, determine that received traffic frame is to carry the additional information traffic frame.
Further, the additional information of carrying in the additional information traffic frame that described extraction is received specifically comprises:
According to described length of carrying the additional information traffic frame, determine to generate this carry the additional information traffic frame the encryption algorithm of corresponding traffic frame, and, find out the secondary bit of traffic frame according to the Bit Allocation in Discrete of this encryption algorithm;
Extract the information of the secondary bit of being found out, promptly obtain described additional information.
The present invention also provides a kind of system of additional information transmission, and this system comprises:
The information substitution module is used for the information of the secondary bit of additional information substitution service frame, obtains carrying the additional information traffic frame;
The source of additional information end is used to send the described additional information traffic frame that carries, a described complete traffic frame that carries the additional information traffic frame for this transmission;
The additional information destination is used to receive the described additional information traffic frame that carries; And be used for transmitting or decoding recovery traffic frame;
Information extraction modules is used for extracting the received additional information of carrying the additional information traffic frame; And be used for filling in secondary bit, obtain described recovery traffic frame.
Further, described information substitution module comprises:
First enquiry module is used for the Bit Allocation in Discrete according to the encryption algorithm of described traffic frame, finds out the secondary bit of traffic frame;
Alternative module is used for the information with the alternative described secondary bit of finding out of additional information, obtains carrying the additional information traffic frame.
Further, described information extraction modules comprises:
Second enquiry module is used for the length of carrying the additional information traffic frame according to described, determine to generate this carry the additional information traffic frame the encryption algorithm of corresponding traffic frame, and be used for Bit Allocation in Discrete according to encryption algorithm, find out the secondary bit of traffic frame;
Abstraction module is used to extract the information of the secondary bit of being found out, and obtains described additional information; And be used for filling in secondary bit, obtain described recovery traffic frame.
Further, described source of additional information end comprises:
First frame module is used to receive traffic frame, perhaps the business information coding is generated traffic frame; And be used for sending and carry the additional information traffic frame;
First signalling module is used to generate additional information traffic frame indication signaling; And send described additional information traffic frame indication signaling by signalling path.
Further, described additional information destination comprises:
Second frame module is used to receive traffic frame; And be used for transmitting or decoding recovery traffic frame;
Second signalling module is used for determining that according to the additional information traffic frame indication signaling that receives received traffic frame is to carry the additional information traffic frame.
The method and system of additional information transmission provided by the present invention have following advantage and characteristics:
By information with the secondary bit of additional information substitution service frame, additional information is written in the traffic frame transmits, behind the additional information destination, extract additional information again, do not need additionally to set up channel and promptly finished transmission of Additional Information; And after extracting additional information, fill 0 or 1 in secondary bit, and reduce greatly and extract the influence of additional information decode precision, guaranteed the communication quality of basic service.
Description of drawings
Fig. 1 is the realization flow figure of embodiment of the invention additional information transmission method;
Fig. 2 is the schematic diagram of the full-rate speech traffic frame secondary bit of EVRC coding;
Fig. 3 is the structural representation of embodiment of the invention additional information transmission system.
Embodiment
Comprise source of additional information end and additional information destination in the realization of the present invention system, the source of additional information end is used to receive traffic frame, perhaps the business information coding is generated traffic frame, and be used for consulting with the additional information destination, definition additional information traffic frame indication signaling, and generate additional information traffic frame indication signaling, and send additional information traffic frame indication signaling and carry the additional information traffic frame to the additional information destination; The additional information destination is used to receive described additional information traffic frame indication signaling and carries the additional information traffic frame, and transmits or decoding recovery traffic frame; The described additional information traffic frame that carries is meant the traffic frame that carries additional information, and described recovery traffic frame fills 0 or 1 in secondary bit, the traffic frame that obtains after being meant that the additional information of additional information traffic frame is carried in time extraction.
The realization flow of embodiment of the invention additional information transmission method may further comprise the steps as shown in Figure 1:
Step 101: the source of additional information termination is received traffic frame, perhaps the business information coding is generated traffic frame.
Here, the source of additional information end can be portable terminal, base station, core net etc.; During for portable terminal, be used for the business information coding and generate traffic frame; During for base station, core net, be used for reception to traffic frame.
Step 102: substitute the information of the secondary bit of described traffic frame with additional information, obtain carrying the additional information traffic frame;
Because full rate frame and half rate, that 1/4th rate business frames are compared secondary bit is many, the portable additional information of every frame is many, selects the full rate frame to carry additional information here.
Concrete alternative method comprises:
A1, according to the Bit Allocation in Discrete of the encryption algorithm that generates received or the traffic frame that generates, find out the secondary bit of traffic frame; The Bit Allocation in Discrete of described encryption algorithm has been indicated each relevant parameter pairing bit in traffic frame, and described secondary bit is meant the last position bit of the pairing traffic frame of each relevant parameter, the Bit Allocation in Discrete difference of different encryption algorithms, but the Bit Allocation in Discrete of various encryption algorithms determines that the secondary bit of its traffic frame that generates is also determined.For example among Fig. 2, in the full-rate speech traffic frame of variable rate speech coder (EVRC) coding, comprise 8 secondary bit of the 36th, 41,44,84,127,130,170,171 bits, alternative bit number is 8 bits.
B1, substitute the information of the secondary bit found out, obtain carrying the additional information traffic frame with additional information;
Step 103: generate additional information traffic frame indication signaling.Described additional information traffic frame indication signaling is by source of additional information end and the definition through consultation in advance of additional information destination.When the source of additional information end carries the additional information traffic frame in the transmission of transmission source of additional information end, generate and send additional information traffic frame indication signaling, indicating and describedly carry the additional information traffic frame, is to carry the additional information traffic frame so that the additional information destination is understood received traffic frame.
Step 104: the source of additional information end sends described additional information traffic frame indication signaling to the additional information destination by signalling path, and carries the additional information traffic frame to the additional information destination by the service channel transmission.
Step 105: the additional information destination receives described additional information traffic frame indication signaling and traffic frame.
Step 106:, judge whether received traffic frame carries the additional information traffic frame according to received additional information traffic frame indication signaling; If, execution in step 107; If not, then execution in step 108.
Step 107: according to extracting received additional information of carrying in the additional information traffic frame, fill 0 or 1 in corresponding secondary bit, traffic frame is restored;
Described additional information destination can be portable terminal, base station, core net etc., wherein, during for portable terminal, the described recovery traffic frame of decoding; During for base station, core net, transmit described recovery traffic frame;
Here, fill 0 or 1 in secondary bit, be because secondary bit is the last in the pairing traffic frame bit of each relevant parameter, directly extract its information and can reduce each relevant parameter pairing bit number in traffic frame, and then to the decoding precision make a big impact, and with after the 0 or 1 filling secondary bit, each relevant parameter pairing bit number in traffic frame is constant, only change the information of its pairing last position bit in traffic frame, the influence of precision to decoding is very little, the communication quality of basic service can be guaranteed, distortions such as voice or video can be do not caused.
Concrete abstracting method comprises:
A2, additional information destination be according to described length of carrying the additional information traffic frame, determines to generate this and carry the pairing traffic frame encryption algorithm of additional information traffic frame, and according to the Bit Allocation in Discrete of this encryption algorithm, find out the secondary bit of traffic frame; The length difference of the different traffic frames that encryption algorithm generated, for example: the traffic frame that the EVRC algorithm generates is 171 bits, the traffic frame that 13k voice compression coding (qcelp13k) algorithm generates then is 266 bits, and generate when carrying the additional information traffic frame, only need information with additional information substitution service frame secondary bit, do not change the length of this traffic frame, therefore, here can be according to described length of carrying the additional information traffic frame, determine to generate this carry the additional information traffic frame the encryption algorithm of corresponding traffic frame;
The information of the secondary bit that b2, extraction are found out promptly obtains described additional information; It is simple professional that additional information generally is used for location, cryptosync etc., and contained content is less, generally is no more than 8 bits, and therefore, the information of the secondary bit that is extracted is additional information.
Step 108: the additional information destination is transmitted or the described recovery traffic frame of decoding; Wherein, when the additional information destination was portable terminal, the described recovery traffic frame of decoding obtained business information; During for base station, core net, transmit described recovery traffic frame.
The structure of the system of embodiment of the invention additional information transmission is characterized in that as described in Figure 3 this system comprises:
The source of additional information end is used to receive traffic frame, perhaps the business information coding is generated traffic frame; And be used for sending and carry the additional information traffic frame;
The information substitution module is used for the information of the secondary bit of additional information substitution service frame, obtains the described additional information traffic frame that carries;
The additional information destination is used to receive the described additional information traffic frame that carries; And be used for transmitting or decoding recovery traffic frame.
Information extraction modules is used for extracting the received additional information of carrying the additional information traffic frame; And be used for filling 0 or 1 in secondary bit, obtain described recovery traffic frame.
Wherein, described information substitution module comprises:
First enquiry module is used for the Bit Allocation in Discrete according to the encryption algorithm that generates received or the traffic frame that generates, and finds out the secondary bit of traffic frame;
Alternative module is used for the information with the alternative described secondary bit of finding out of additional information, obtains carrying the additional information traffic frame;
Described information extraction modules comprises:
Second enquiry module is used for the length of carrying the additional information traffic frame according to described, determine to generate this carry the additional information traffic frame the encryption algorithm of corresponding traffic frame, and be used for Bit Allocation in Discrete according to encryption algorithm, find out the secondary bit of traffic frame;
Abstraction module is used to extract the information of the secondary bit of being found out, and obtains described additional information; And be used for filling 0 or 1 in secondary bit, obtain described recovery traffic frame.
Described source of additional information end comprises:
First frame module is used to receive traffic frame, perhaps the business information coding is generated traffic frame; And be used for sending and carry the additional information traffic frame; Only move basic service at described source of additional information end, during additional information transmission, first frame module also is not used to send the traffic frame of basic service;
First signalling module is used to generate additional information traffic frame indication signaling; And send described additional information traffic frame indication signaling by signalling path;
Described additional information destination comprises:
Second frame module is used to receive traffic frame; And be used for transmitting or decoding recovery traffic frame;
Second signalling module is used for determining that according to the additional information traffic frame indication signaling that receives received traffic frame is to carry the additional information traffic frame.
Here, the information substitution module is installed on the source of additional information end, and information extraction modules is installed on the additional information destination, and source of additional information end, additional information destination all can be portable terminal, base station, core net etc.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (9)
1. the method for an additional information transmission is characterized in that, this method comprises:
Information with the secondary bit of additional information substitution service frame obtains carrying the additional information traffic frame, and sends and carry the additional information traffic frame, a described complete traffic frame that carries the additional information traffic frame for this transmission;
Extract received additional information of carrying in the additional information traffic frame, fill in secondary bit, the traffic frame that is restored, and transmit or decoding recovers traffic frame.
2. according to the method for the described additional information transmission of claim 1, it is characterized in that the information of described secondary bit with additional information substitution service frame obtains carrying the additional information traffic frame, and send and carry the additional information traffic frame and specifically comprise:
According to the Bit Allocation in Discrete of the encryption algorithm of described traffic frame, find out the secondary bit of traffic frame;
Information with the alternative described secondary bit of finding out of additional information obtains carrying the additional information traffic frame;
Generate additional information traffic frame indication signaling;
Send described additional information traffic frame indication signaling by signalling path, and carry the additional information traffic frame by the service channel transmission.
3. according to the method for the described additional information transmission of claim 2, it is characterized in that described extraction is received comprises before carrying additional information in the additional information traffic frame:
According to the additional information traffic frame indication signaling that receives, determine that received traffic frame is to carry the additional information traffic frame.
4. according to the method for claim 1 or 3 described additional information transmissions, it is characterized in that the additional information of carrying in the additional information traffic frame that described extraction is received specifically comprises:
According to described length of carrying the additional information traffic frame, determine to generate this carry the additional information traffic frame the encryption algorithm of corresponding traffic frame, and, find out the secondary bit of traffic frame according to the Bit Allocation in Discrete of this encryption algorithm;
Extract the information of the secondary bit of being found out, promptly obtain described additional information.
5. the system of an additional information transmission is characterized in that, this system comprises:
The information substitution module is used for the information of the secondary bit of additional information substitution service frame, obtains carrying the additional information traffic frame;
The source of additional information end is used to send the described additional information traffic frame that carries, a described complete traffic frame that carries the additional information traffic frame for this transmission;
The additional information destination is used to receive the described additional information traffic frame that carries; And be used for transmitting or decoding recovery traffic frame;
Information extraction modules is used for extracting the received additional information of carrying the additional information traffic frame; And be used for filling in secondary bit, obtain described recovery traffic frame.
6. according to the system of the described additional information transmission of claim 5, it is characterized in that described information substitution module comprises:
First enquiry module is used for the Bit Allocation in Discrete according to the encryption algorithm of described traffic frame, finds out the secondary bit of traffic frame;
Alternative module is used for the information with the alternative described secondary bit of finding out of additional information, obtains carrying the additional information traffic frame.
7. according to the system of the described additional information transmission of claim 5, it is characterized in that described information extraction modules comprises:
Second enquiry module is used for the length of carrying the additional information traffic frame according to described, determine to generate this carry the additional information traffic frame the encryption algorithm of corresponding traffic frame, and be used for Bit Allocation in Discrete according to encryption algorithm, find out the secondary bit of traffic frame;
Abstraction module is used to extract the information of the secondary bit of being found out, and obtains described additional information; And be used for filling in secondary bit, obtain described recovery traffic frame.
8. according to the system of the described additional information transmission of claim 5, it is characterized in that described source of additional information end comprises:
First frame module is used to receive traffic frame, perhaps the business information coding is generated traffic frame; And be used for sending and carry the additional information traffic frame;
First signalling module is used to generate additional information traffic frame indication signaling; And send described additional information traffic frame indication signaling by signalling path.
9. the system of described additional information transmission according to Claim 8 is characterized in that described additional information destination comprises:
Second frame module is used to receive traffic frame; And be used for transmitting or decoding recovery traffic frame;
Second signalling module is used for determining that according to the additional information traffic frame indication signaling that receives received traffic frame is to carry the additional information traffic frame.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810227787XA CN101426189B (en) | 2008-12-03 | 2008-12-03 | Method and system for additional information transmission |
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| CN200810227787XA CN101426189B (en) | 2008-12-03 | 2008-12-03 | Method and system for additional information transmission |
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| CN101426189A CN101426189A (en) | 2009-05-06 |
| CN101426189B true CN101426189B (en) | 2011-01-05 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101938640A (en) * | 2009-06-29 | 2011-01-05 | 中兴通讯股份有限公司 | Method for improving broadcast channel frame utilization factor, application method of filing part and device |
| CN102104845A (en) * | 2009-12-22 | 2011-06-22 | 中兴通讯股份有限公司 | Additional information transmission method and device, and additional information receiving method and device |
| JP5607831B2 (en) * | 2010-09-13 | 2014-10-15 | ドルビー ラボラトリーズ ライセンシング コーポレイション | Data transmission using out-of-gamut color coordinates |
| CN109561323B (en) * | 2019-01-02 | 2021-11-12 | 武汉珈铭汉象教育科技有限公司 | MP4 file encryption and decryption method and device |
| CN113873275B (en) * | 2021-09-13 | 2023-12-29 | 乐相科技有限公司 | Video media data transmission method and device |
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Granted publication date: 20110105 Termination date: 20171203 |