CN1848728B - Group broadcasting data controlled method based on IP network - Google Patents
Group broadcasting data controlled method based on IP network Download PDFInfo
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- CN1848728B CN1848728B CN200510064338.4A CN200510064338A CN1848728B CN 1848728 B CN1848728 B CN 1848728B CN 200510064338 A CN200510064338 A CN 200510064338A CN 1848728 B CN1848728 B CN 1848728B
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Abstract
A method for controlling multicast data based on IP network includes multicast right information preprocess as downs ending multicast right of multicast member to controller of multicast member and multicast certification management consisting of multicast joining /disengaging mechanism, mechanism of forced-disengaging multicast group and recording mechanism of multicast member behavior.
Description
Technical field
The present invention relates to the IP network system, specially refer to the IP that computer network, communication network are combined
Network service system.
Background technology
IP multicast (also claiming multi-address broadcast or multicast) technology is that a kind of one or more main frame of permission (multicast source) sends single packet to the multiple host TCP/IP network technology of (once, while).Multicast is one of effective ways of saving the network bandwidth as some communication to multiple spot.The IP cast communication must depend on IP multicast address, and it is a Class D IP address in IPv4, and scope and is divided into the local link multicast address, reserves multicast address and administration authority multicast address three classes from 224.0.0.0 to 239.255.255.255.Use the All hosts of same IP multicast address receive multicast packet to constitute a host groups, be also referred to as multicast group.
In computer network (comprising the Internet network), propagation at multicast packet, usually be divided into three steps: the first step is multicast member controller receiving group member's request, (the Internet Engineering Task Force of internet engineering working group, be called for short IETF) be IGMP at the IPv4 definition, this agreement is divided into IGMP1 and two versions of IGMP2, and IETF is MLD at the IPv6 definition; Second step was the process of setting up (being the process of setting up of multicast tree) from the multicast packet source to path the multicast recipient, this process by ietf definition as multicast control protocols such as DVMRP, PIM-SM, PIM-DM, MOSPF; The 3rd step then was that the actual sets multicast data is along the good process of multicast path from the multicast packet source to each multicast member of second step foundation.There are many weak points in above-mentioned traditional mechanism, joins request as the multicast group that sends for any main frame, and the multicast member controller can not be refused; Can not know the number of members of receiving multicast data; Can not obtain the behavioural information relevant of multicast member with multicast; There is not the compulsion multicast member to withdraw from the mechanism of multicast group.Therefore also there is room for improvement aspect the multicast control.
Summary of the invention
The objective of the invention is to overcome the defective of traditional multicast member management protocol, increase the control degree of multicast member, thereby a kind of IP based network is provided, comprises that multicast adds/withdraw from the group broadcasting data controlled method of authentication mechanism, compulsory withdrawal multicast group mechanism, multicast member behavior record mechanism.
To achieve the above object of the invention, the group broadcasting data controlled method of IP based network provided by the invention comprises the management of preliminary treatment of multicast authority information and multicast authentication; The preliminary treatment of described multicast authority information is the process that the multicast authority of multicast member is issued to the multicast member controller; Processing method that the preliminary treatment of described multicast authority information can be adopted batch or the method that combines with access authentication.
Described multicast authentication management comprises that multicast adds authentication mechanism, and this mechanism realizes as follows:
11) multicast member is according to user instruction, and the multicast multicast member controller that joins request is initiated on the backstage, carries the information that can discern user identity in this request, and has safe and secret label;
Whether 12) the multicast member controller at first is decrypted processing according to subscriber identity information according to the request that receives, and legal according to the multicast authority checking request that multicast member sent; As legal,, and open the pairing transmitting multicast data of user to multicast member feedback successful information; Otherwise, to the multicast member feeding back unsuccessful information.
Added at multicast member under the prerequisite of multicast group, described multicast authentication management comprises that also multicast withdraws from authentication mechanism, and this mechanism realizes as follows:
13) multicast member is according to user instruction, and backstage initiation multicast withdraws from asks the multicast member controller, carries the information that can discern user identity in this request, and has safe and secret label;
Whether 14) the multicast member controller at first is decrypted processing according to subscriber identity information according to the request that receives, and legal according to the multicast authority checking request that multicast member sent; As legal, to multicast member feedback successful information; Otherwise, to the multicast member feeding back unsuccessful information.
The processing method that becomes in the preliminary treatment of described multicast authority information batch comprises the steps:
111) definition multicast authority formatted file between multicast behavior processing center and multicast member controller;
112) proprietary protocol based on UDP/TCP by FTP (file transfer protocol (FTP)) or definition voluntarily is passed to the multicast member controller with the multicast authority formatted file by multicast behavior processing center; Or directly use the proprietary protocol based on UDP/TCP of definition voluntarily to be passed to the multicast member controller multicast authority information by multicast behavior processing center.
The method that combines with access authentication in the preliminary treatment of described multicast authority information comprises the steps:
121) multicast member is initiated authentication request under the situation of access network;
122) have concurrently under the situation of the function that authenticates couple in router at the multicast member controller, the multicast member controller is initiated authentication request to certificate server, and this authentication request is by Radius protocol extension data field;
123) certificate server passes to the multicast member controller with the multicast authority of authentication result and this multicast member, and the multicast member controller carries out multicast control according to these information; Wherein authentication result is by Radius agreement, growth data field.
Safe and secret label in the described step 11) can be symmetric cryptography or public key encryption or MD5 algorithm summary.
Added at multicast member under the prerequisite of multicast group, described multicast authentication management also comprises compulsory withdrawal multicast group mechanism, and this mechanism realizes as follows:
21) the multicast member controller changes according to the order or the multicast authority that come from the system management aspect, cause the specific multicast member no longer to have the authority of the multicast traffic stream that is receiving at present, generate the compulsory withdrawal multicast group command, this order is sent to the specific multicast member who is forced to withdraw from;
22) multicast member receives after the compulsory withdrawal multicast group command, and according to the reason that is wherein comprised, generation can be shown to user's information, initiatively withdraws from the multicast accepting state simultaneously.
Under the prerequisite with described multicast adding/escape mechanism, multicast member initiatively produces described multicast at every turn and adds/withdraw from when asking, at multicast behavior processing center recording user ID, multicast identifier, concrete time, action classification.
Under prerequisite, when the multicast member controller withdraws from multicast group each pressure specific multicast member, at multicast behavior processing center recording user ID, multicast identifier, concrete time, action classification with described compulsory withdrawal multicast group mechanism.
The existing conventional multicast member management protocol exists some drawbacks, as: the multicast group that sends for any main frame joins request, and bcmcs controller can not be refused; Can not know the number of members of receiving multicast data; Can not obtain the behavioural information relevant of multicast member with multicast; There is not the compulsion multicast member to withdraw from the mechanism of multicast group.Compared with prior art, the present invention has overcome above-mentioned drawback, has increased the control degree to multicast member, is engaged in runing the effective means that provide for service provider, Virtual network operator utilize multicast protocol in the enterprising industry of IP network.Its concrete manifestation is as follows: add/withdraw from multicast group by the control multicast member, can formulate certain management strategy, the technical support of commercial operation is provided for operator; Add/withdraw from multicast group by the control multicast member, can with disabled user's shielding outside the multicast packet acceptance domain, prevent its interference, and alleviate the burden of multicast member control, reduce network traffics normal multicast member user; By the compulsory withdrawal multicast group,, the prepayment service of operator supports for providing technical support and management; By record is carried out in the multicast member behavior, for further data mining provides data information.
Description of drawings
Fig. 1 is a group broadcasting data controlled method The general frame of the present invention;
Fig. 2 is the multicast authority information pretreatment process figure of a preferred embodiment of the invention;
Fig. 3 is the flow chart that multicast of the present invention adds authentication section;
Fig. 4 is the sequential chart that multicast of the present invention adds verification process;
Fig. 5 is the flow chart that multicast of the present invention withdraws from authentication section;
Fig. 6 is the sequential chart that multicast of the present invention withdraws from verification process;
Fig. 7 is the flow chart of compulsory withdrawal multicast group part among the present invention;
Fig. 8 is the sequential chart of compulsory withdrawal multicast group process of the present invention;
Fig. 9 is the multicast authority information pretreatment process figure of another preferred embodiment of the present invention;
Figure 10 is the schematic diagram of the three class entities that arrive involved in the present invention;
Figure 11 is a kind of application scenarios schematic diagram of multicast controlled method of the present invention.
Embodiment
The group broadcasting data controlled method of IP based network provided by the invention relates to three class entities: multicast member, multicast member controller, multicast behavior processing center (as shown in figure 10).
Wherein, multicast member refers to initiate the physical equipment entity (these behaviors are often directly or indirectly by artificial triggering) of multicast request; These physical equipment entities comprise all kinds of computers, set-top box or possess the various terminal equipments of wireless access.
The multicast member controller refers to the equipment entity of directly reception or indirect receiving group request; It both can be a hardware device, as router, gateway, Layer 2 switch; It also can be the software program entity of on main frame or server, realizing.
Multicast behavior processing center refers to switch for information about between different multicast group from multicast member controller receiving group member, and then carries out the equipment entity of relevant treatment, as OSS (BOSS), business management system, Subscriber Management System etc.
Multicast member can be connected to the multicast member controller by various wireless or wired modes, comprises xDSL (transmission mechanism that uses the telephone wire mode to carry out data communication), WLAN (802.11a, 802.11b, 802.11g etc.), WWAN (802.16) and various Ethernet access way (10Mbps, 100Mbps, 1000Mbps and 10Gbps).
Between multicast member controller and the multicast behavior processing center, needing only at ip protocol layer is directly to be communicated with.
Below in conjunction with the drawings and specific embodiments, the group broadcasting data controlled method of IP based network provided by the invention is further elaborated.
The group broadcasting data controlled method of IP based network provided by the invention comprises preliminary treatment of multicast authority information and multicast authentication management.Wherein the preliminary treatment of multicast authority information is the process that the multicast authority of multicast member equipment is issued to the multicast member controller, and the processing method that can adopt batch also can adopt the method that combines with access authentication.After the preliminary treatment of multicast authority information is finished, then can carry out the multicast authentication management.The multicast authentication management comprises that multicast adds/withdraw from authentication, compulsory withdrawal multicast group and multicast member behavior record, and its specific implementation step will describe in detail hereinafter.
Embodiment 1
As shown in Figure 1, the group broadcasting data controlled method of IP based network provided by the invention comprises:
Step 100: multicast authority information preliminary treatment.
Step 200: multicast authentication management.
In the present embodiment, as shown in Figure 2, the processing method that the preprocessing process of step 100 adopts batch comprises following substep:
Step 101: definition multicast authority formatted file between multicast behavior processing center and multicast member controller; Wherein multicast behavior processing center can be OSS (BOSS) or business management system or Subscriber Management System.Comprise user ID in the multicast authority formatted file, multicast address, authority sign etc.
Step 102: by FTP (file transfer protocol (FTP)) or voluntarily the definition the proprietary protocol based on UDP/TCP (at the data load part transport multicast authority information of UDP/TCP, every permission item comprises user ID, multicast address, the authority sign) the multicast authority formatted file is passed to the multicast member controller from multicast behavior processing center; Perhaps directly multicast authority information is passed to the multicast member controller from multicast behavior processing center, this transmittance process uses the proprietary protocol based on UDP/TCP of definition voluntarily.
Shown in Fig. 3,4, multicast adds authentication and comprises following substep:
Step 201: the multicast member request adds certain multicast group, utilizes the multicast management protocol transmission multicast of expansion to join request.
Step 202: the multicast member controller receives that multicast joins request, and forwards the request to multicast behavior processing center.
Step 203: multicast behavior processing center is received the multicast of transmitting in the step 202 and is joined request, and corresponding information in this request and multicast permission information are compared, if coincide, then returns the request results that allows adding; As misfit, then return the request results that refusal adds.
Step 204: the multicast member controller receives the request results that multicast behavior processing center is returned in the step 203 and judges this request results, if for allowing to add, multicast member is added multicast group and transmitted response to multicast member, and the result who simultaneously multicast member is added multicast sends to multicast behavior processing center.
Step 205: multicast member is received the adding result, and judged result is if success then changes the receiving multicast data state over to; Otherwise point out corresponding failure information to give the user, change the program request main menu of multicast member equipment afterwards over to.
Shown in Fig. 5,6, multicast withdraws from authentication method and comprises following substep:
Step 211: certain multicast group is withdrawed from the multicast member request, and the multicast management protocol of multicast member utilization expansion sends multicast and withdraws from request.
Step 212: the multicast member controller receives that multicast withdraws from request, forwards the request to multicast behavior processing center.
Step 213: multicast behavior processing center is received the request of forwarding, and the inquiry multicast allows tabulation, if find, return results withdraws from for allowing; Otherwise the result is an illegal request.Multicast behavior processing center sends to the multicast member controller with the result then.
Step 214: the multicast member controller receives that withdrawing from that multicast behavior processing center transmits reply, and transmitted response is judged request results simultaneously to multicast member, if the result withdraws from for allowing, multicast member equipment place port is withdrawed from multicast group handle.
Step 215: the multicast member controller will withdraw from result and send to multicast behavior processing center; Multicast member equipment is received to withdraw from and is replied, judged result, if the result withdraws from for allowing, multicast member equipment changes its program request main menu over to; Otherwise prompting illegal request information, multicast member equipment changes the program request main menu over to afterwards.
Shown in Fig. 7,8, compulsory withdrawal multicast group method comprises following substep:
Step 221: multicast behavior processing center is regularly carried out poll to the multicast member equipment that adds multicast, if continuous n poll, n gets 3 in the present embodiment, and fixed time interval is defined as 10 seconds (wrap count and the time interval can be determined according to actual conditions).Multicast member equipment is response not, and multicast behavior processing center sends to the multicast member controller and withdraws from ordered multicast.Perhaps according to the management strategy requirement, when the manager required multicast member equipment to withdraw from multicast group, multicast behavior processing center sent to the multicast member controller and withdraws from ordered multicast.
Step 222: the multicast member controller receives that multicast exits command, and multicast member equipment place port is withdrawed from multicast group handle, and the multicast member controller will withdraw from result and be dealt into multicast behavior processing center.
The method of multicast behavior record is: receiving that at every turn multicast joins request or multicast withdraws under the situation of request, perhaps because administrative reason compulsion multicast member device withdraws under the situation of multicast group, carry out record in multicast behavior processing center, recorded information comprises user ID, multicast address, time of origin, action classification information such as (as withdraw from/add).
Embodiment 2
The group broadcasting data controlled method of IP based network provided by the invention comprises:
Step 100: multicast authority information preliminary treatment.
Step 200: multicast authentication management.
In the present embodiment, the preprocessing process of step 100 adopts the method that combines with access authentication, comprises following substep (as shown in Figure 9):
Step 111: multicast member is initiated authentication request under the situation of access network.
Step 112: have concurrently at the multicast member controller under the situation of the function that authenticates couple in router, the multicast member controller is initiated authentication request to certificate server after receiving the authentication request of multicast member, this authentication request is by Radius protocol extension data field.
Step 113: certificate server passes to the multicast member controller with the multicast authority of authentication result and this multicast member, and the multicast member controller carries out multicast control according to these information.The authentication result is here also passed through Radius agreement, growth data field.
In the present embodiment, step 200 is identical with embodiment 1, repeats no more.
Figure 11 is an application scenarios of the present invention, and it shows the example that user in IP network watches IPTV.Each equipment links together by Ethernet among the figure, and the multicast data flow server is the IPTV server, and the program that play leaves in wherein, plays according to certain scheduling mechanism; The multicast authority maintenance can be OSS in practice, and the notice multicast authority safeguards that machine arrives the subscriber equipment multicast permission download of being administered local when the start of multicast control router; Afterwards at laptop computer as multicast member equipment, under the situation of multicast control router as the multicast member controller, set of applications Broadcast Control making mechanism between laptop computer, multicast control router and multicast behavior processing center three.
For realizing the present invention, need go up at multicast member equipment (as the calculating on knee among Figure 11) multicast client software is installed, this software is according to the several data structures of formal definition of IGMPv2 source program (this can obtain by the mode of open source software) data cell, and the request of writing, reply, the process of commands function.Simultaneously, need go up the software of build-in services device end at multicast member controller (as the control multicast router among Figure 11), the development approach of this software and client software is basic identical, distinguishes and only is the task difference finished; Also need on the multicast member controller, write the function of record multicast member behavior in addition.These programming processes all belong to this area professional's known technology, repeat no more.
Among the present invention, at control multicast router accumulation multicast member behavioral data to a certain degree or after the certain hour, can pass through existing various communication modes, as TCP, UDP etc., data are sent to multicast behavior processing center, can certainly initiatively obtain these information by multicast behavior processing center.Multicast behavior processing center obtains can use data mining technology or other data analysis techniques after the multicast member behavioral data, thereby obtains the data that administrative department wants.
Claims (6)
1. the group broadcasting data controlled method of an IP based network is characterized in that, comprises the management of preliminary treatment of multicast authority information and multicast authentication; The preliminary treatment of described multicast authority information is the process that the multicast authority of multicast member is issued to the multicast member controller; Processing method that the preliminary treatment of described multicast authority information can be adopted batch or the method that combines with access authentication;
Described multicast authentication management comprises that multicast adds authentication mechanism, and this mechanism realizes as follows:
11) multicast member is according to user instruction, and the multicast multicast member controller that joins request is initiated on the backstage, carries the information that can discern user identity in this request, and has safe and secret label;
Whether 12) the multicast member controller at first is decrypted processing according to subscriber identity information according to the request that receives, and legal according to the multicast authority checking request that multicast member sent; As legal,, and open the pairing transmitting multicast data of user to multicast member feedback successful information; Otherwise, to the multicast member feeding back unsuccessful information;
Described multicast authentication management comprises that also multicast withdraws from authentication mechanism, and this mechanism realizes as follows:
13) multicast member is according to user instruction, and backstage initiation multicast withdraws from asks the multicast member controller, carries the information that can discern user identity in this request, and has safe and secret label;
Whether 14) the multicast member controller at first is decrypted processing according to subscriber identity information according to the request that receives, and legal according to the multicast authority checking request that multicast member sent; As legal, to multicast member feedback successful information; Otherwise, to the multicast member feeding back unsuccessful information.
2. by the described group broadcasting data controlled method of claim 1, the processing method that becomes in the preliminary treatment of described multicast authority information batch comprises the steps:
111) definition multicast authority formatted file between multicast behavior processing center and multicast member controller;
112) proprietary protocol based on UDP/TCP by FTP (file transfer protocol (FTP)) or definition voluntarily is passed to the multicast member controller with the multicast authority formatted file by multicast behavior processing center; Or directly use the proprietary protocol based on UDP/TCP of definition voluntarily to be passed to the multicast member controller multicast authority information by multicast behavior processing center.
3. by the described group broadcasting data controlled method of claim 1, the safe and secret label in the described step 11) adopts symmetric cryptography or public key encryption or MD5 algorithm summary.
4. by the described group broadcasting data controlled method of claim 1, described multicast authentication management also comprises compulsory withdrawal multicast group mechanism, and this mechanism realizes as follows:
21) the multicast member controller changes according to the order or the multicast authority that come from the system management aspect, cause the specific multicast member no longer to have the authority of the multicast traffic stream that is receiving at present, generate the compulsory withdrawal multicast group command, this order is sent to the specific multicast member who is forced to withdraw from;
22) multicast member receives after the compulsory withdrawal multicast group command, and according to the reason that is wherein comprised, generation can be shown to user's information, initiatively withdraws from the multicast accepting state simultaneously.
5. by the described group broadcasting data controlled method of claim 2, multicast member initiatively produces described multicast at every turn and adds/withdraw from when asking, at multicast behavior processing center recording user ID, multicast identifier, concrete time, action classification.
6. by the described group broadcasting data controlled method of claim 4, when the multicast member controller withdraws from multicast group each pressure specific multicast member, at multicast behavior processing center recording user ID, multicast identifier, concrete time and action classification.
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| CN101247553B (en) * | 2007-02-13 | 2011-08-10 | 华为技术有限公司 | Multimedia broadcast multicast service system and conversation starting and stopping method |
| CN111970135A (en) * | 2020-07-09 | 2020-11-20 | 北京航空航天大学 | Typhoon tracking and detecting instrument information sharing method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1404259A (en) * | 2001-09-13 | 2003-03-19 | 华为技术有限公司 | Business node-controlling multicasting method |
| CN1414759A (en) * | 2002-01-30 | 2003-04-30 | 华为技术有限公司 | Controlled group broadcasting system and its realizing method |
| CN1419363A (en) * | 2002-11-26 | 2003-05-21 | 华为技术有限公司 | Protocol 802.1X based multicast control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1404259A (en) * | 2001-09-13 | 2003-03-19 | 华为技术有限公司 | Business node-controlling multicasting method |
| CN1414759A (en) * | 2002-01-30 | 2003-04-30 | 华为技术有限公司 | Controlled group broadcasting system and its realizing method |
| CN1419363A (en) * | 2002-11-26 | 2003-05-21 | 华为技术有限公司 | Protocol 802.1X based multicast control method |
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