CN104283812A - Method and system for identifying access bandwidth of user - Google Patents
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Abstract
The invention discloses a method and system for identifying the access bandwidth of a user. According to the method, an identification platform receives identification information sent by the user, the identification information contains a user account, the downlink available bandwidth of the user is found out according to the user account, the corresponding relation between the downlink available bandwidth and a DSCP value saved in a mapping table is looked up and sent to a BRAS, the BRAS changes the DSCP value in an uplink IP data packet of the user according to the corresponding relation and sends the IP data packet to an operator network, and an SRD arranged at the exit of an IDC records the corresponding relation between a source address and a source port and the DSCP value and sends the IP data packet to a CP/SP when the IP data packet passes through an edge device of the operator network. According to the method and system for identifying the access bandwidth of the user, the access bandwidth of the user is transmitted by means of a DSCP field in the IP data packet to assist the CP/SP in providing different services for users with different access bandwidths according to the information, and an operator can also provide different services for different users according to the information.
Description
Technical field
The invention belongs to the IP network communications field, particularly relate to a kind of method and system of identifying user access bandwidth.
Background technology
Along with the scale of Internet covers and the develop rapidly of Internet technology, based on IP(Internet protocol) carry out the internet video application that transmits also just vigorously, high speed development.
Based on the difference of resolution, current internet video is mainly divided into several as follows: 1080p(is full HD), 720p, 1080i, 480p.Under same coded format, the basic corresponding different video code flow of different resolution, namely different bandwidth demands.
In existing video code flow transport process, because video code flow supplier (follow-up abbreviation CP/SP) cannot know the available bandwidth of broadband user, therefore the code stream of its access bandwidth applicable cannot be initiatively provided to user, by the client of its Video Applications, several code stream options for user can only be provided to select or carries out poll detection by client and select different code streams.
On the other hand, operator, when developing high access bandwidth user, also lacks the effective means effectively identifying these user's downstream data flows from source, and the edge that can not enter backbone network in data just ensures customer flow.
Therefore, a kind of effective means are needed to carry out identifying user access bandwidth.
Summary of the invention
In view of more than, the present invention proposes a kind of method and system of identifying user access bandwidth.
According to an aspect of the present invention, the method of identifying user access bandwidth is proposed, wherein: authentication platform receives the authentication information that user sends, this authentication information comprises user account, the descending available bandwidth of user is found according to user account, search the corresponding relation between descending available bandwidth and DSCP value preserved in mapping table, this corresponding relation is sent to BRAS; By BRAS according to the DSCP value in this corresponding relation change user uplink IP packet, and this IP packet is issued carrier network; When IP packet is through the edge device of carrier network, be deployed in the SRD of IDC outlet, the corresponding relation of record source address, source port and DSCP value, and by IP Packet Generation to CP/SP.
In one embodiment of the invention, the method of described identifying user access bandwidth, CP/SP receives IP packet, searches available downstream bandwidth corresponding in the mapping table that operator provides, and select the code stream with bandwidth match according to the dscp field value in IP data packet head.
In one embodiment of the invention, the method of described identifying user access bandwidth, when downlink traffic enters backbone edges, SRD mates the list item in SRD, list item in SRD comprises the DSCP value of the source address of data flow, source port, destination address, destination interface, protocol number and data flow, according to the destination address of data flow, the DSCP value of destination interface selection correspondence, and DSCP value is carried in the IP packet of downlink traffic.
In one embodiment of the invention, the method for described identifying user access bandwidth, operator sends mapping table by offline mode to CP/SP, or provides the interface with CP/SP by operator, sends mapping table by this interface to CP/SP.
In one embodiment of the invention, the method for described identifying user access bandwidth, also preserves the corresponding relation between descending available bandwidth, DSCP value and user gradation in mapping table.
According to a further aspect of the invention, the system of identifying user access bandwidth is also proposed, wherein: authentication platform, be configured at the authentication information receiving user and send, this authentication information comprises user account, find the descending available bandwidth of user according to user account, search the corresponding relation between descending available bandwidth and DSCP value preserved in mapping table, this corresponding relation is sent to BRAS; By BRAS according to the DSCP value in this corresponding relation change user uplink IP packet, and this IP packet is issued carrier network; SRD, is deployed in IDC outlet, is configured at the corresponding relation of record source address, source port and DSCP value, and by IP Packet Generation to CP/SP.
In one embodiment of the invention, the system of described identifying user access bandwidth, also comprises: CP/SP, is configured at and receives IP packet, search available downstream bandwidth corresponding in the mapping table that operator provides according to the dscp field value in IP data packet head, and select the code stream with bandwidth match.
In one embodiment of the invention, the system of described identifying user access bandwidth, SRD is when the downlink traffic of user enters backbone edges, list item in coupling SRD, list item in SRD comprises the DSCP value of the source address of data flow, source port, destination address, destination interface, protocol number and data flow, according to the destination address of data flow, the DSCP value of destination interface selection correspondence, and DSCP value is carried in the IP packet of downlink traffic.
In one embodiment of the invention, the system of described identifying user access bandwidth, operator sends mapping table by offline mode to CP/SP, or provides the interface with CP/SP by operator, sends mapping table by this interface to CP/SP.
In one embodiment of the invention, the system of described identifying user access bandwidth, also preserves the corresponding relation between descending available bandwidth, DSCP value and user gradation in mapping table.
The present invention passes through identifying user access bandwidth, thus, make CP/SP initiatively can provide the code stream of its access bandwidth applicable to user.Further, operator effectively can identify the downstream data flow of these users from source.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms a part of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Figure 1 shows that the value of the dscp field that RFC2597 advises.
Figure 2 shows that and utilize DSCP to come identifying user grade and user's access bandwidth.
Figure 3 shows that the method flow diagram of identifying user access bandwidth in one embodiment of the invention.
Figure 4 shows that the method flow diagram of identifying user access bandwidth in another embodiment of the present invention.
Figure 5 shows that the structural representation of the system of identifying user access bandwidth in one embodiment of the invention.
Embodiment
Various exemplary embodiment of the present invention is described in detail now with reference to accompanying drawing.It should be noted that: unless specifically stated otherwise, otherwise the positioned opposite and numerical value of the parts of setting forth in these embodiments and step does not limit the scope of the invention.
Meanwhile, it should be understood that for convenience of description, the size of the various piece shown in accompanying drawing is not draw according to the proportionate relationship of reality.
Illustrative to the description only actually of at least one exemplary embodiment below, never as any restriction to the present invention and application or use.
May not discuss in detail for the known technology of person of ordinary skill in the relevant, method and apparatus, but in the appropriate case, described technology, method and apparatus should be regarded as a part of authorizing specification.
In all examples with discussing shown here, any occurrence should be construed as merely exemplary, instead of as restriction.Therefore, other example of exemplary embodiment can have different values.
It should be noted that: represent similar terms in similar label and letter accompanying drawing below, therefore, once be defined in an a certain Xiang Yi accompanying drawing, then do not need to be further discussed it in accompanying drawing subsequently.
In the head-coating structure of the IP packet that RFC791 specifies, 8-13 position is Differentiated Services Code Point(differentiated services code points, DSCP), be namely used for realizing the differentiated service in IP data packets process.This field has 6, also main first 3 of the use disposed in a network at present, namely usually said IPP(IP Precedence, IP priority) position.The DSCP value of 6 has 64 kinds may value.Existing RFC just gives suggestion more common as follows:
Default PHB(Per hop behavior, per hop behavior) PHB of-acquiescence, value is 0.
Expedited Forwarding(EF) PHB of PHB-fast-forwarding, value is 46.
Assured Forwarding(AF) PHB of PHB-assured forwarding, value, see Fig. 1, Figure 1 shows that the value of the dscp field that RFC2597 advises.
Class Selector PHBs-with the PHB of IPP compatibility.
Give also concrete value suggestion for the PHB of AF class, RFC2597, it is divided into 4 Class(Class1, Class2, Class3, Class4), each Class distinguishes again corresponding 3 classes and forwards demand (Low Drop, Med Drop, High Drop), the value suggestion of each PHB is as Fig. 1.
In existing RFC, how concrete regulation does not distinguish different Class, or how different flows is put in different Class, the present invention passes through at the network boundary place of operator, access bandwidth information according to broadband user is encoded and assignment to this 4 class Class, the different Class value that different access rate scopes is corresponding, concrete corresponding relation can be as shown in Figure 2.Figure 2 shows that and utilize DSCP to come identifying user grade and user's access bandwidth.Certainly, Fig. 2 is exemplary illustration, and operator can have how many kinds of to divide Class according to the bandwidth types of its broadband user, is not limited to 4 classes listed in Fig. 2.The value of DSCP has 64 kinds (0-63), can be divided into multiple groups neatly, namely be divided into multiple Class.
In the broadband network, user has different access band width in physical, typical in 2M, 4M, 8M, 16M etc.As previously described, the video definition of current main flow is also 4 kinds substantially: 1080p(is full HD), 720p, 1080i, 480p.If the available bandwidth information of user can be carried up by DSCP value at network boundary by operator in real time, and in IP data forwarding process, this field generally can not change, CP/SP, after receiving IP packet, just can select the video code flow of suitable definition and suitable coded format to send user to according to this information.Such as, the coding of SD form is comparatively large to the compression of video, but definition can reduce; The coding of high-definition format preserves the original quality of video as far as possible, and definition can improve, but needs the data volume of transmission just many, just needs higher access bandwidth.
For every class broadband user, the grade can also continuing to use RFC definition is refined as 3 class clients again: gold medal, silver medal, bronze medal.Wherein, gold, silver and bronze, for dividing user gradation, it will be understood by those skilled in the art that the present invention can represent different grades by other marks, also can be not limited to be divided into 3 class hierarchies, can change as required.In one embodiment of the invention, the mark of gold, silver and bronze three class user can be realized by operator, such as, realizes according to the mapping table in Fig. 2.Also can identify according to the demand of CP/SP self, that is, revise or redefine DSCP value according to the attribute (user property defined with operator is substantially irrelevant) of itself user.
Along with the continuous increase of network insertion bandwidth, user can access bandwidth kind may change, so just need operator to provide an interface, when the mapping table in Fig. 2 occurs to upgrade, operator notifies the change of this mapping relations in time to CP/SP.
Based on foregoing, to the present invention proposes in a kind of IP of utilization packet dscp field to transmit the access bandwidth of user, to assist CP/SP to provide different services according to the user that this information is different access bandwidth, operator also can according to this information for different user provides the service of differentiation.Improve the intellectuality of bearer network, strengthen working in coordination with of terminal use's attribute and upper layer application.
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail.
Figure 3 shows that the method flow diagram of identifying user access bandwidth in one embodiment of the invention, the method comprises the following steps:
Step 31, authentication platform receives the authentication information that user sends, this authentication information comprises user account, the descending available bandwidth of user is found according to user account, search the corresponding relation between descending available bandwidth and DSCP value preserved in mapping table, this corresponding relation is sent to BRAS(Broadband Remote Access Server, BAS Broadband Access Server).
In another embodiment of the invention, the corresponding relation between descending available bandwidth, DSCP value and user gradation is also preserved in mapping table.Mapping table can be as shown in Figure 2.Wherein, descending available bandwidth is such as the value of 1M, DSCP is such as 11.
When preserving the corresponding relation between descending available bandwidth and DSCP value in mapping table, that is, marked the Class at user place by AF, do not distinguish the grade of user.This mode does not need IP network to enable QoS, and only needing can this DSCP value of transparent transmission.
When preserving the corresponding relation between descending available bandwidth, DSCP value and user gradation in mapping table, that is, mark the Class at user place and the grade of user.This mode needs IP network to enable QoS, refers to that router in IP network is while this dscp field of transparent transmission, can also carry out differentiation scheduling according to the DSCP value of data flow.For the flow of different brackets user, can carry out differentiation scheduling, such as, user gradation is divided into gold, silver and bronze, then the flow of priority scheduling gold user, then dispatches the flow of silver-colored user, then dispatches the flow of copper user.
Step 32, by BRAS according to the DSCP value in this corresponding relation change user uplink IP packet, and issues carrier network by this IP packet.
Step 33, when IP packet is through the edge device of carrier network, be deployed in IDC(Internet Data Center, Internet data center) the SRD(Stateful Record Device that exports, there is state mapping equipment, such as, Smart6), the corresponding relation of record source address, source port and DSCP value, and by IP Packet Generation to CP/SP.
Also as shown in Figure 3, another embodiment of the present invention, further comprising the steps of:
Step 34, CP/SP receives IP packet, searches available downstream bandwidth corresponding in the mapping table that carrier authorization platform provides, and select the code stream with bandwidth match according to the dscp field value in IP data packet head.Such as, send the code stream of SD to the user of 2M, send the code stream of high definition to the user of 8M.
Wherein, operator sends mapping table by offline mode (such as, by modes such as ftp file transmission, mails) to CP/SP, or provides the interface with CP/SP by operator, sends mapping table by this interface to CP/SP.
Figure 4 shows that the method flow diagram of identifying user access bandwidth in another embodiment of the present invention, wherein, by SDR, the mark of uplink traffic is mapped in downlink traffic, to realize significant notation to user's up-downgoing stream and differentiated service.The method comprises the following steps:
Step 41, when downlink traffic enters backbone edges, SRD mates the list item in SRD, list item in SRD comprises the DSCP value of the source address of data flow, source port, destination address, destination interface, protocol number and data flow, according to the destination address of data flow, the DSCP value of destination interface selection correspondence, and DSCP value is carried in the IP packet of downlink traffic.
Step 42, operator carries out differentiation scheduling according to this DSCP value to the downlink traffic of user.
Figure 5 shows that the structural representation of the system of identifying user access bandwidth in one embodiment of the invention.This system comprises: authentication platform, BRAS and SRD.
Authentication platform, be configured at the authentication information receiving user and send, this authentication information comprises user account, finds the descending available bandwidth of user according to user account, search the corresponding relation between descending available bandwidth and DSCP value preserved in mapping table, this corresponding relation is sent to BRAS.
In another embodiment of the present invention, in mapping table, also preserve the corresponding relation between descending available bandwidth, DSCP value and user gradation.
BRAS, according to the DSCP value in this corresponding relation change user uplink IP packet, and issues carrier network by this IP packet.
SRD, is deployed in IDC outlet, is configured at the corresponding relation of record source address, source port and DSCP value, and by IP Packet Generation to CP/SP.
Also as shown in Figure 5, another embodiment of the present invention, also comprises:
CP/SP, is configured at and receives IP packet, searches available downstream bandwidth corresponding in the mapping table that operator provides, and select the code stream with bandwidth match according to the dscp field value in IP data packet head.
Wherein, operator sends mapping table by offline mode to CP/SP, or provides the interface with CP/SP by operator, sends mapping table by this interface to CP/SP.
In another embodiment of the invention, SRD is when the downlink traffic of user enters backbone edges, list item in coupling SRD, list item in SRD comprises the DSCP value of the source address of data flow, source port, destination address, destination interface, protocol number and data flow, according to the destination address of data flow, the DSCP value of destination interface selection correspondence, and DSCP value is carried in the IP packet of downlink traffic.
Operator carries out differentiation scheduling according to this DSCP value to the downlink traffic of user.
Similar, the present invention also can be used in the video playback for mobile subscriber, because mobile terminal has different screen sizes, different screens may correspond in the above-mentioned bandwidth mentioned of the present invention, by being built in PDSN(Packet Data Serving Node, packet data serving node) inner DPI(deep-packet detection) recognition of devices user terminal type used, obtain the screen size of terminal, the terminal uplink stream being different screen size by PDSN beats different dscp field values, realizes the suitable code stream automatic adaptation for different mobile terminal.
The passive selection of code stream that prior art causes because not understanding user's access bandwidth, the present invention can initiatively select by CP/SP the code stream definition being suitable for user's available bandwidth.
About the definition of DSCP with recommend value in the existing RFC standard of flexible utilization of the present invention, completely compatible with standard.Because the assignment of dscp field is at operator edge, the mark in up-downgoing flow maps to be grasped by operator completely, effectively identifies from source, end-to-end completely controlled.
By this standard, get through contacting between user property and upper strata CP/SP, improve the service ability of operator to upstream and downstream user.
So far, the present invention is described in detail.In order to avoid covering design of the present invention, details more known in the field are not described.Those skilled in the art, according to description above, can understand how to implement technical scheme disclosed herein completely.
Method of the present invention and device may be realized in many ways.Such as, any combination by software, hardware, firmware or software, hardware, firmware realizes method of the present invention and device.Said sequence for the step of described method is only to be described, and the step of method of the present invention is not limited to above specifically described order, unless specifically stated otherwise.In addition, in certain embodiments, can be also record program in the recording medium by the invention process, these programs comprise the machine readable instructions for realizing according to method of the present invention.Thus, the present invention also covers the recording medium stored for performing the program according to method of the present invention.
Although be described in detail specific embodiments more of the present invention by example, it should be appreciated by those skilled in the art, above example is only to be described, instead of in order to limit the scope of the invention.It should be appreciated by those skilled in the art, can without departing from the scope and spirit of the present invention, above embodiment be modified.Scope of the present invention is limited by claims.
Claims (10)
1. the method for identifying user access bandwidth, is characterized in that:
Authentication platform receives the authentication information that user sends, this authentication information comprises user account, the descending available bandwidth of user is found according to user account, search the corresponding relation between descending available bandwidth and differentiated services code points (DSCP) value preserved in mapping table, this corresponding relation is sent to BAS Broadband Access Server (BRAS);
By BRAS according to the DSCP value in this corresponding relation change user uplink IP packet, this IP packet is issued carrier network;
When IP packet is through the edge device of carrier network, what be deployed in that Internet data center (IDC) exports has state mapping equipment (SRD), the corresponding relation of record source address, source port and DSCP value, and by IP Packet Generation to CP/SP.
2. the method for identifying user access bandwidth according to claim 1, is characterized in that:
CP/SP receives IP packet, searches available downstream bandwidth corresponding in the mapping table that operator provides, and select the code stream with bandwidth match according to the dscp field value in IP data packet head.
3. the method for identifying user access bandwidth according to claim 1 or 2, is characterized in that:
When downlink traffic enters backbone edges, SRD mates the list item in SRD, list item in SRD comprises the DSCP value of the source address of data flow, source port, destination address, destination interface, protocol number and data flow, according to the destination address of data flow, the DSCP value of destination interface selection correspondence, and DSCP value is carried in the IP packet of downlink traffic.
4. the method for identifying user access bandwidth according to claim 1 or 2, is characterized in that:
Operator sends mapping table by offline mode to CP/SP, or provides the interface with CP/SP by operator, sends mapping table by this interface to CP/SP.
5. the method for identifying user access bandwidth according to claim 1 or 2, is characterized in that:
The corresponding relation between descending available bandwidth, DSCP value and user gradation is also preserved in mapping table.
6. the system of identifying user access bandwidth, is characterized in that:
Authentication platform, be configured at the authentication information receiving user and send, this authentication information comprises user account, finds the descending available bandwidth of user according to user account, search the corresponding relation between descending available bandwidth and DSCP value preserved in mapping table, this corresponding relation is sent to BRAS;
BRAS, is configured at according to the DSCP value in this corresponding relation change user uplink IP packet, and this IP packet is issued carrier network;
SRD, is deployed in IDC outlet, is configured at the corresponding relation of record source address, source port and DSCP value, and by IP Packet Generation to CP/SP.
7. the system of identifying user access bandwidth according to claim 6, is characterized in that, also comprise:
CP/SP, is configured at and receives IP packet, searches available downstream bandwidth corresponding in the mapping table that operator provides, and select the code stream with bandwidth match according to the dscp field value in IP data packet head.
8. the system of identifying user access bandwidth according to claim 6 or 7, is characterized in that:
SRD is when the downlink traffic of user enters backbone edges, list item in coupling SRD, list item in SRD comprises the DSCP value of the source address of data flow, source port, destination address, destination interface, protocol number and data flow, according to the destination address of data flow, the DSCP value of destination interface selection correspondence, and DSCP value is carried in the IP packet of downlink traffic.
9. the system of identifying user access bandwidth according to claim 6 or 7, is characterized in that:
Operator sends mapping table by offline mode to CP/SP, or provides the interface with CP/SP by operator, sends mapping table by this interface to CP/SP.
10. the system of identifying user access bandwidth according to claim 6 or 7, is characterized in that:
The corresponding relation between descending available bandwidth, DSCP value and user gradation is also preserved in mapping table.
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| CN112637128A (en) * | 2020-11-25 | 2021-04-09 | 四川新网银行股份有限公司 | Identity mutual trust method and system for data center host |
| CN113285922A (en) * | 2021-04-22 | 2021-08-20 | 新华三信息安全技术有限公司 | Table item processing method and device |
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