CN105933340A - Service quality ensuring method and device for data streams - Google Patents
Service quality ensuring method and device for data streams Download PDFInfo
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- CN105933340A CN105933340A CN201610481625.3A CN201610481625A CN105933340A CN 105933340 A CN105933340 A CN 105933340A CN 201610481625 A CN201610481625 A CN 201610481625A CN 105933340 A CN105933340 A CN 105933340A
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- subfield
- rtp
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- business
- data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/65—Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/80—Responding to QoS
Abstract
The embodiment of the invention provides a service quality ensuring method and device for data streams, relates to the field of communications, and aims to effectively ensure the service quality of streaming media through an RTP (Real Time Protocol). The method comprises the following steps that: a transmitting end acquires a data packet, wherein the data packet includes the data streams and an identifier of a service; the transmitting end inquires the priority of the service according to the identifier of the service; the transmitting end performs RTP encapsulation on the data packet according to an encapsulation format of the RTP and the priority of the service to obtain an RTP data packet of the service, wherein the RTP data packet of the service includes a data sub-field, and the data sub-field is used for indicating the priority of the data streams carried by the RTP data packet of the service; and the transmitting end transmits the RTP data packet of the service to a receiving end according to the priority of the data streams carried by the RTP data packet of the service indicated by the data sub-field. Through adoption of the service quality ensuring method and device, the service quality of the data streams is ensured.
Description
Technical field
The present invention relates to the communications field, particularly relate to the quality of service support method of a kind of data stream
And device.
Background technology
RTP is (English full name: Real-time Transport Protocol, English
It is called for short: RTP) by internet standardization tissue (English full name: Internet Engineering Task
Force, English abbreviation: IETF) network transmission protocol proposing, be embodied in series with
The file (English full name: Request For Comments, English abbreviation: RFC) that numbering is ranked
In 3550 documents.RTP is used for needing the data of real-time Transmission for voice, image, fax etc.
Stream provides real-time Transmission end to end.Concrete, internetworking protocol (English full name: Internet
Protocol, English abbreviation: IP) client, server, switch or route in network
Data stream, before transmitting data stream, is sealed by the equipment such as device according to the encapsulation format of RTP
Dress, and owing to RTP is divided in transport layer, set up at UDP (English complete
Claim: User Datagram Protocol, English abbreviation: UDP) on, equipment is according to UDP
Encapsulation format RTP packet is packaged after carry out real-time Transmission.
But, RTP does not ensure the quality of service of data stream.Such as, occur when IP network
Time congested, receiving terminal possibly cannot be correctly received the packet that carry data stream in time,
Produce packet loss phenomenon.How to ensure that the quality of service of data stream is one and urgently solves by RTP
Problem certainly.
Summary of the invention
The embodiment of the present invention provides quality of service support method and the device of a kind of data stream, it is possible to
The quality of service of data stream is effectively ensured by RTP.
For reaching above-mentioned purpose, the embodiment of the present invention the technical scheme is that
First aspect, it is provided that the quality of service support method of a kind of data stream, including:
Transmitting terminal obtains packet, and packet includes the mark of data stream and business；Transmitting terminal root
Priority according to the mark inquiry business of business；Transmitting terminal is according to the encapsulation format of RTP and industry
The priority of business carries out RTP encapsulation to packet, obtains the RTP packet of business, wherein,
The RTP packet of business includes data subfield, and data subfield is for indicating the RTP of business
The priority of the data stream of packet carrying；The industry that transmitting terminal indicates according to described data subfield
The priority of the data stream of the RTP packet carrying of business is to the RTP number of receiving terminal transmission business
According to bag.
The quality of service support method of the data stream that above-mentioned first aspect provides, by arranging RTP
The data subfield of the idle extended field self included, is used to refer to RTP packet and holds
The priority of the data stream carried, sends data stream according to the priority of data stream, thus, pass through
The quality of service of the data stream of the agreement guarantee transmission of RTP self, and extend making of RTP
Use scope.
In conjunction with first aspect, can be in implementation at the first, transmitting terminal arranges RTP data
The extended field included, extended field includes identification subfield, Length subfield and data
Field, identification subfield is used for identity extension field, and Length subfield is used for indicating the sub-word of data
The length of section, the priority of the data stream that data subfield carries for indicating RTP packet.
Concrete, the value of identification subfield is the first binary number in addition to full 0 and complete 1,
First binary number is made up of 4 bit (bit) positions.The value of Length subfield is the two or two to enter
Number processed, the bit length of the second binary number is more than or equal to 4.The value of data subfield be except full 0 and
The 3rd binary number outside complete 1, the bit length of the 3rd binary number is more than or equal to the 4, the 3rd 2
System number is used for representing that priority, Sender side Storage have the 3rd binary number corresponding with priority
Relation.
Second aspect, it is provided that a kind of transmitting terminal, including:
Acquiring unit, is used for obtaining packet, and described packet includes the mark of data stream and business
Know；Query unit, for inquiring about the priority of described business according to the mark of described business；Envelope
Dress unit, preferential for according to the encapsulation format of realtime transmission protocol RTP and described business
Level carries out RTP encapsulation to described packet, obtains the RTP packet of described business, wherein,
The RTP packet of described business includes that data subfield, described data subfield are used for indicating
The priority of the data stream of the RTP packet carrying of described business；Transmitting element, for root
The data stream of the RTP packet carrying of the described business indicated according to described data subfield excellent
First level transmits the RTP packet of described business to receiving terminal.
Transmitting terminal of the present invention can be the equipment such as the switch in IP network or router.
It should be noted that functional module can be realized by hardware described in above-mentioned second aspect,
Corresponding software can also be performed by hardware to realize.Described hardware or software include one or many
The individual module corresponding with above-mentioned functions.Such as, communication interface, be used for receive unit and
The function of transmitting element, processor, it is used for the function of processing unit.Processor, communication
Interface and memorizer are connected by bus and complete mutual communicating.Concrete, it is referred to
The function of the behavior of transmitting terminal in the quality of service support method of the data stream that first aspect provides.
In the present invention, the name of transmitting terminal does not constitute restriction to equipment itself, in practical implementations,
These equipment can occur with other titles.As long as the function of each equipment is similar with the present invention,
Belong within the scope of the claims in the present invention and equivalent technologies thereof.
The aspects of the invention or other aspects can be simpler in the following description
Bright understandable.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below
The accompanying drawing used required in embodiment or description of the prior art will be briefly described, aobvious and
Easily insight, the accompanying drawing in describing below is only some embodiments of the present invention, for this area
From the point of view of those of ordinary skill, on the premise of not paying creative work, it is also possible to according to these
Accompanying drawing obtains other accompanying drawing.
Fig. 1 provides a kind of communication system schematic diagram for the embodiment of the present invention；
Fig. 2 provides the quality of service support method flow process of a kind of data stream for the embodiment of the present invention
Figure；
Fig. 3 provides the quality of service support method stream of another kind of data stream for the embodiment of the present invention
Cheng Tu；
The extended field that Fig. 4 provides a kind of RTP packet to include for the embodiment of the present invention is illustrated
Figure；
Fig. 5 provides a kind of sending end structure schematic diagram for the embodiment of the present invention；
Fig. 6 provides another kind of sending end structure schematic diagram for the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, to the technical side in the embodiment of the present invention
Case is clearly and completely described, it is clear that described embodiment is only the present invention one
Divide embodiment rather than whole embodiments.Based on the embodiment in the present invention, this area is general
The every other embodiment that logical technical staff is obtained under not making creative work premise,
Broadly fall into the scope of protection of the invention.
The present invention rationale here is that: by arranging the idle extension that RTP self includes
The data subfield of field, is used to refer to the priority of the data stream of RTP packet carrying,
Priority according to data stream sends data stream, thus, by the agreement guarantee of RTP self
The quality of service of the data stream of transmission, and extend the range of RTP.
Describe embodiments of the present invention below with reference to the accompanying drawings in detail.
The embodiment of the present invention provides a kind of communication system schematic diagram, as it is shown in figure 1, include: visitor
Family end, switch, router and server.Client is connected with switch and/or router,
Switch and router are connected with each other, and server is connected with switch and/or router.Exchange
Machine and router are respectively used to the packet forwarding client to server, or server is to visitor
The packet of family end.
Embodiment 1
The embodiment of the present invention provides the quality of service support method of a kind of data stream, such as Fig. 2 institute
Show, including:
Step 101, transmitting terminal obtain packet.
Packet includes the mark of data stream and business.
Step 102, transmitting terminal are according to the priority of the mark inquiry business of business.
Step 103, transmitting terminal according to the encapsulation format of RTP and the priority of business to packet
Carry out RTP encapsulation, obtain the RTP packet of business.
Wherein, the RTP packet of business includes that data subfield, data subfield are used for referring to
Show the priority of the data stream of the RTP packet carrying of business.
The RTP packet carrying of the business that step 104, transmitting terminal indicate according to data subfield
Data stream priority to receiving terminal transmission business RTP packet.
Example, transmitting terminal just at the packet of the first business that transmission priority is 0010,
Now, transmitting terminal receives the packet of the second business, and transmitting terminal is according to the data of the second business
It is 0001 that the mark of the second business included inquires the priority of the second business, then,
Transmitting terminal is the data to the second business according to the encapsulation format of RTP and the priority of the second business
Bag carries out RTP encapsulation, obtains the RTP packet of the second business, and the value of data subfield is
0001, the value of the data subfield that transmitting terminal includes according to the RTP packet of the second business
The value of 0001 inquiry data subfield and the corresponding relation of priority, obtain the excellent of 0001 correspondence
First level is higher than the priority of 0010 correspondence, and transmitting terminal preferentially transmits the second business to receiving terminal
RTP packet.
So, by arranging data of the idle extended field that RTP self includes
Field, is used to refer to the priority of the data stream of RTP packet carrying, according to data stream
Priority sends data stream, thus, the data stream transmitted by the agreement guarantee of RTP self
Quality of service, and extend the range of RTP.
Further, the data subfield owing to arranging is that the figure place according to binary number embodies
, increase binary number according to the figure place of binary number and also accordingly increase, so can be corresponding
Multiple priority, then, quickly updating and in the case of development in business, it is possible to pass through
The quality of service of the data stream of the agreement guarantee transmission of RTP self.
It should be noted that extended field has two kinds of forms in the band of RFC5282 kind definition:
One byte (one-byte) and two bytes (two-byte).Standard specifies, a byte expansion
Field needs to be supported by all devices.Therefore, the present invention uses a byte expansion field to carry industry
Business quality assurance information, enhances the range of RTP.
Further, based on Fig. 2 as it is shown on figure 3, obtain before packet at transmitting terminal, i.e.
Before step 101, transmitting terminal can also carry out step in detail below.
Step 105, transmitting terminal arrange the extended field that RTP packet includes.
As shown in Figure 4, the extended field schematic diagram that RTP packet includes.Extended field includes
Identification subfield, Length subfield and data subfield.Identification subfield is used for identifying extension word
Section.Length subfield is for indicating the length of data subfield.Data subfield is used for indicating
The priority of the data stream of RTP packet carrying.
Concrete, the value of identification subfield is the first binary number in addition to full 0 and complete 1,
First binary number is made up of 4 bit (bit) positions.Such as, the value of identification subfield is 7,
First binary number is 0111.
The value of Length subfield is the second binary number, and the bit length of the second binary number is more than or equal to
4.Such as, the value of Length subfield is 4, and the second binary number is 0100.
The value of data subfield is the 3rd binary number in addition to full 0 and complete 1, and the three or two enters
The bit length of number processed is more than or equal to 4, and the 3rd binary number is used for representing priority.As shown in table 1,
3rd binary number and the corresponding relation of priority.
Table 1 the 3rd binary number and the corresponding relation of priority
From table 1 it follows that from 0001 to 1110 altogether 13 priority levels, 0000
It is reserved field with 1111.0001 to 1110 can be corresponding from high priority to low priority,
Or correspondence is from low priority to high priority.
It should be noted that the value of Length subfield can also be 5, the second binary number is
0011, then, the bit length of the 3rd binary number of corresponding data subfield is equal to 5.
Step 106, transmitting terminal prestore the mark of business pass corresponding with the priority of business
System.
Embodiment 2
The embodiment of the present invention provides a kind of transmitting terminal 20, as it is shown in figure 5, include:
Acquiring unit 201, is used for obtaining packet, and described packet includes data stream and business
Mark；
Query unit 202, for inquiring about the priority of described business according to the mark of described business；
Encapsulation unit 203, for the encapsulation format according to realtime transmission protocol RTP and described industry
The priority of business carries out RTP encapsulation to described packet, obtains the RTP data of described business
Bag, wherein, the RTP packet of described business includes data subfield, the sub-word of described data
The priority of the data stream that section carries for indicating the RTP packet of described business；
Transmitting element 204, the RTP of the described business for indicating according to described data subfield
The priority of the data stream of packet carrying transmits the RTP packet of described business to receiving terminal.
So, by arranging data of the idle extended field that RTP self includes
Field, is used to refer to the priority of the data stream of RTP packet carrying, according to data stream
Priority sends data stream, thus, the data stream transmitted by the agreement guarantee of RTP self
Quality of service, and extend the range of RTP.
As shown in Figure 6, described transmitting terminal also includes:
Unit 205 is set, for arranging the extended field that RTP packet includes, described extension
Field includes identification subfield, Length subfield and data subfield, and described identification subfield is used
In identifying described extended field, described Length subfield is for indicating the length of described data subfield
Degree, described data subfield is for indicating the preferential of data stream that described RTP packet carries
Level.
Memory element 206, corresponding with the priority of business for prestoring the mark of business
Relation.
Transmitting terminal of the present invention can be the equipment such as the switch in IP network or router.
Between the most each embodiment same or analogous part can mutually with reference to and the most superfluous
State.
It should be noted that for the ease of the technical scheme clearly describing the embodiment of the present invention,
In embodiments of the invention, have employed the printed words such as " first ", " second " to function and effect
Essentially identical identical entry or similar item make a distinction, it will be appreciated by those skilled in the art that " the
One ", quantity and execution order are not defined by the printed words such as " second ".
Those skilled in the art is it can be understood that arrive, for convenience and simplicity of description,
The device of foregoing description and the specific works process of unit, be referred in preceding method embodiment
Corresponding process, do not repeat them here.
One of ordinary skill in the art will appreciate that: realize the whole of said method embodiment or portion
Can be completed by the hardware that programmed instruction is relevant step by step, aforesaid program can be stored in
In one computer read/write memory medium, this program upon execution, performs to include that said method is real
Execute the step of example；And aforesaid storage medium includes: ROM, RAM, magnetic disc or CD
Etc. the various media that can store program code.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is also
Being not limited to this, any those familiar with the art is at the technology model that the invention discloses
In enclosing, change can be readily occurred in or replace, all should contain within protection scope of the present invention.
Therefore, protection scope of the present invention should be as the criterion with described scope of the claims.
Claims (11)
1. the quality of service support method of a data stream, it is characterised in that including:
Transmitting terminal obtains packet, and described packet includes the mark of data stream and business；
Described transmitting terminal inquires about the priority of described business according to the mark of described business；
Described transmitting terminal is according to the encapsulation format of realtime transmission protocol RTP and the priority pair of described business
Described packet carries out RTP encapsulation, obtains the RTP packet of described business, wherein, described business
RTP packet include data subfield, described data subfield is for indicating the RTP of described business
The priority of the data stream of packet carrying；
The RTP packet carrying of the described business that described transmitting terminal indicates according to described data subfield
The priority of data stream transmits the RTP packet of described business to receiving terminal.
Method the most according to claim 1, it is characterised in that obtain packet at described transmitting terminal
Before, described method also includes:
Described transmitting terminal arranges the extended field that RTP packet includes, described extended field includes mark
Field, Length subfield and data subfield, described identification subfield is used for identifying described extended field,
Described Length subfield is for indicating the length of described data subfield, and described data subfield is used for indicating
The priority of the data stream of described RTP packet carrying.
Method the most according to claim 2, it is characterised in that the value of described identification subfield is for removing
The first binary number outside full 0 and complete 1, described first binary number is made up of 4 bit bit positions.
Method the most according to claim 3, it is characterised in that the value of described Length subfield is
Two binary numbers, the bit length of described second binary number is more than or equal to 4.
Method the most according to claim 4, it is characterised in that the value of described data subfield is for removing
The 3rd binary number outside full 0 and complete 1, the bit length of described 3rd binary number is more than or equal to 4, institute
Stating the 3rd binary number for representing priority, described Sender side Storage has described 3rd binary number and institute
State the corresponding relation of priority.
6. according to the method described in claim 1-5 any one claim, it is characterised in that in institute
Before stating transmitting terminal acquisition packet, described method also includes:
Described transmitting terminal prestores the mark of described business and the corresponding relation of the priority of described business.
7. a transmitting terminal, it is characterised in that including:
Acquiring unit, is used for obtaining packet, and described packet includes the mark of data stream and business；
Query unit, for inquiring about the priority of described business according to the mark of described business；
Encapsulation unit, for the encapsulation format according to realtime transmission protocol RTP and the priority of described business
Described packet is carried out RTP encapsulation, obtains the RTP packet of described business, wherein, described industry
The RTP packet of business includes data subfield, and described data subfield is for indicating the RTP of described business
The priority of the data stream of packet carrying；
Transmitting element, the RTP packet carrying of the described business for indicating according to described data subfield
Data stream priority to receiving terminal transmit described business RTP packet.
Transmitting terminal the most according to claim 7, it is characterised in that described transmitting terminal also includes:
Arranging unit, for arranging the extended field that RTP packet includes, described extended field includes mark
Knowing son field, Length subfield and data subfield, described identification subfield is used for identifying described extension word
Section, described Length subfield is for indicating the length of described data subfield, and described data subfield is used for
Indicate the priority of the data stream that described RTP packet carries.
Transmitting terminal the most according to claim 8, it is characterised in that the value of described identification subfield is
The first binary number in addition to full 0 and complete 1, described first binary number is by 4 bit bit hytes
Become.
Transmitting terminal the most according to claim 9, it is characterised in that the value of described Length subfield
Being the second binary number, the bit length of described second binary number is more than or equal to 4.
11. transmitting terminals according to claim 10, it is characterised in that the value of described data subfield
For the 3rd binary number in addition to full 0 and complete 1, the bit length of described 3rd binary number is more than or equal to 4,
Described 3rd binary number be used for representing priority, described Sender side Storage have described 3rd binary number with
The corresponding relation of described priority.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610481625.3A CN105933340A (en) | 2016-06-27 | 2016-06-27 | Service quality ensuring method and device for data streams |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610481625.3A CN105933340A (en) | 2016-06-27 | 2016-06-27 | Service quality ensuring method and device for data streams |
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| CN105933340A true CN105933340A (en) | 2016-09-07 |
Family
ID=56828636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610481625.3A Pending CN105933340A (en) | 2016-06-27 | 2016-06-27 | Service quality ensuring method and device for data streams |
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