CN101707568A - Method and system for controller user multicast service and multicast main control device - Google Patents
Method and system for controller user multicast service and multicast main control device Download PDFInfo
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- CN101707568A CN101707568A CN200910254304A CN200910254304A CN101707568A CN 101707568 A CN101707568 A CN 101707568A CN 200910254304 A CN200910254304 A CN 200910254304A CN 200910254304 A CN200910254304 A CN 200910254304A CN 101707568 A CN101707568 A CN 101707568A
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Abstract
The invention discloses a method for controlling a user multicast service, which comprises the following steps of: acquiring a message sent by user equipment by a multicast main control device through a multicast forwarding device; when the message is a request multicast message, determining whether an interface should be connected with a multicast address of the requested multicast service according to the interface through which the message enters the multicast forwarding device and a configured interface permission; when the interface is determined to be connected with the multicast address, indicating the multicast forwarding device to connect the interface with the multicast address, and recording multicast information which comprises a user equipment identifier in the message, the interface through which the message enters the multicast forwarding device and the multicast address connected with the interface; and according to the recorded multicast information, sending a control message aiming at the user equipment to control the multicast service. The method can achieve the fine user multicast service control aiming at the user equipment but not the interface on one multicast main control device.
Description
Technical field
The present invention relates to data communication technology field, relate in particular to a kind of control method and system and multicast main control device of user multicast service.
Background technology
Along with (the Internet Protocol Television of the IPTV on the Internet, IPTV), video conference, video request program (Video On Demand, VOD) etc. multimedia service carries out on a large scale, traditional multicasting technology is owing to the control that lacks undelegated user multicast service, can't satisfy controlled, the management demand of telecom operators, controllable multicast technology is arisen at the historic moment in this case.So-called controllable multicast technology has increased the multicast control strategy exactly on original multicasting technology basis, thereby realizes the control to user multicast service.
Controllable multicast technology mainly comprise multicast channel management, channel access control (Channel accesscontrol, CAC), several parts such as preview management.It realizes that substantially principle is exactly by CAC configure channel access rights on user interface, thereby realizes the multicast user is watched the unified control and the management of channel.Adopt the multicast main control device of controllable multicast technology can note down down all dynamic multicast users' information simultaneously, can carry out dynamic management.
The control of user multicast service at present all is based on interface level control, the multicast main control device is connected with multicast forwarding equipment, in Ethernet: port Port+VLAN (Virtual Local Area Network) is an interface, is that configuration object comes the configure channel access rights with the Port+VLAN of multicast forwarding equipment such as switch.The multicast main control device is according to pre-configured access rights, and whether the indication multicast forwarding equipment links the multicast address of interface with the multicast service of being asked, and realizes the control of user multicast service.Adopt this multicast forwarding control method, the multicast main control device has only the outgoing interface information of multicast forwarding equipment.If there are a plurality of subscriber equipmenies receiving the multicast data flow of same channel under this outgoing interface simultaneously, the multicast main control device is the details that do not have these subscriber equipmenies, has so both caused multicast service on the multicast main control device to be controlled and has become more meticulous inadequately.
(Internet Group Management Protocol IGMP) is the management agreement of multicast user's side to the Internet igmpinternet.Subscriber equipment passes through this agreement to multicast main control device transparent transmission IGMP member relation message, request certain multicast service of access or disconnection link with certain multicast service, the multicast main control device is after receiving IGMP member relation message, it is added certain multicast group or from the deletion of certain multicast group according to pre-configured interface level access rights, when it was added certain multicast group, the interface that the indication multicast forwarding equipment enters message multicast forwarding equipment linked with the multicast address of the multicast service of asking multicast.The multicast main control device periodically sends the state that IGMP agreement query message is inquired about certain interface by this agreement simultaneously.The IGMP agreement has 3 version: IGMPv1, IGMPv2, IGMPv3 at present.Multicast service control also all is based on interface level control under the present Internet igmpinternet.
The multicast service control that realizes becoming more meticulous need must be carried out on the multicast access equipment (as multicast router) of each direct-connected subscriber equipment multicast user's control.But the above-mentioned multicast service control method that becomes more meticulous has limited must carry out on the multicast access equipment of each direct-connected subscriber equipment the control of multicast service, and the control of this dispersion has increased the related work amount undoubtedly.And, even the multicast main control device has been noted the attribute of all subscriber equipmenies, can carry out the multicast service control that becomes more meticulous of user class, do not have standard agreement can carry the corresponding service control command at present yet, need the new agreement of exploitation or realize this demand by the expansion prior protocols.
Summary of the invention
The invention provides a kind of control method and system and multicast main control device of user multicast service, on a multicast main control device, just can realize the multicast service control that becomes more meticulous at subscriber equipment.
The invention provides a kind of control method of user multicast service, comprising:
The multicast main control device obtains messages sent by user equipment by multicast forwarding equipment;
When described message is the request multicast message, enter the interface of described multicast forwarding equipment and the interface authority that is disposed according to message, determine whether the multicast address of this interface with the multicast service of being asked linked;
When determining described interface linked with multicast address, indicate described multicast forwarding equipment that described interface and multicast address are linked, and the record multicast information, described multicast information comprises the customer equipment identification in the message, the multicast address that interface, interface linked that message enters described multicast forwarding equipment;
According to the multicast information that is write down, send control message control multicast service at subscriber equipment.
The present invention also provides a kind of multicast main control device, comprising:
The message collector unit is used for obtaining messages sent by user equipment by multicast forwarding equipment;
Request multicast processing unit is used for entering the interface of described multicast forwarding equipment and the interface authority that is disposed according to message when described message is the request multicast message, determines whether the multicast address of this interface with the multicast service of being asked linked;
The incoming multicast indicating member is used for indicating described multicast forwarding equipment that described interface and multicast address are linked when determining described interface linked with multicast address;
The multicast record cell when being used for determining described interface linked with described multicast address, writes down multicast information, and described multicast information comprises the customer equipment identification in the message, the multicast address that interface, interface linked that message enters described multicast forwarding equipment;
The multicast control unit is used for according to the multicast information that is write down, and sends the control message control multicast service at subscriber equipment.
The present invention also provides a kind of user multicast service control system, comprising:
Above-mentioned multicast main control device;
Multicast access equipment is used to receive the messages sent by user equipment direct-connected with it, and it is uploaded to multicast forwarding equipment, and the multicast data flow that the receiving group forwarding unit sends also sends it to subscriber equipment; The control message that the receiving group forwarding unit sends carries out the multicast service control of the subscriber equipment direct-connected with it according to described control message;
Multicast forwarding equipment, be used for messages sent by user equipment that multicast access equipment is uploaded, send to described multicast main control device, according to the control of multicast main control device linking or disconnection with interface and multicast address, to send to multicast access equipment from the multicast data flow of multicast address after the link, the control message that the receiving group main control device sends, and send it to described multicast access equipment.
Beneficial effect of the present invention is as follows:
Collect the identification information of subscriber equipment by the message that on the multicast main control device, utilizes the user to upload, and record is to multicast service that should subscriber equipment, multicast access equipment is given in the control information (as cutout, bandwidth control etc.) that makes the multicast main control device can send at subscriber equipment, thereby just can realize on a multicast main control device the user multicast service control that becomes more meticulous at subscriber equipment rather than interface.
Description of drawings
Fig. 1 is the control method flow chart of user multicast service of the present invention;
Fig. 2 is the networking diagram of the inventive method application example;
The control method flow chart of user multicast service in Fig. 3 embodiment of the invention;
Fig. 4 is an existing standard IGMPv3 agreement query message content schematic diagram;
Fig. 5 is the IGMPv3 agreement query message content schematic diagram according to the inventive method expansion;
Fig. 6 is the device processes flow chart that receives the IGMPv3 protocol massages according to the inventive method;
Fig. 7 is the structured flowchart of multicast main control device in the embodiment of the invention;
Fig. 8 is the control system structured flowchart of user multicast service in the embodiment of the invention;
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in qualification the present invention.
Be illustrated in figure 1 as user multicast service control method flow chart provided by the invention, the method comprising the steps of: S101, and the multicast main control device obtains messages sent by user equipment by multicast forwarding equipment; S102, when described message is request multicast message (IGMP Report message), enter the interface (Port+VLAN) of described multicast forwarding equipment according to described message, determine whether the multicast address of this interface with the multicast service of being asked linked, specifically can be according to the channel access rights that are the interface configuration of multicast forwarding equipment in advance, determine whether and to make the corresponding multicast data flow of interface transmission give subscriber equipment the corresponding multicast address of this interface link; S103, when determining described interface linked with described multicast address, indicate described multicast forwarding equipment that described interface and multicast address are linked, and the record multicast information, described multicast information comprises that the customer equipment identification in the message, the interface that message enters described multicast forwarding equipment are the multicast address that Port+VLAN, interface link.Like this, in the multicast main control device, just write down the identification information of subscriber equipment, and this subscriber equipment is using the information of which interface channel under which interface of multicast forwarding equipment; S104 according to the multicast information that is write down, sends the control message control multicast service at subscriber equipment.Owing to write down above-mentioned multicast information, can realize the multicast service control of user class with customer equipment identification and corresponding multicast relevant information.
Preferably, when the multicast main control device obtains messages sent by user equipment for disconnection multicast message (Leave message) by multicast forwarding equipment, will be with customer equipment identification in the message, interface (Port+VLAN) that message enters described multicast forwarding equipment, disconnect the multicast information that multicast address mated of multicast service, from the multicast information that is write down, delete; Promptly realize dynamically updating of multicast information that the multicast main control device is safeguarded, the multicast information of maintenance is the user's of access to multicast service a multicast information.Simultaneously the multicast main control device indicates described multicast forwarding equipment to disconnect linking of described interface and multicast address.The control message at subscriber equipment that the multicast main control device is sent preferably includes customer equipment identification, multicast address, professional control command and Control Parameter.Can different professional control command and Control Parameter be set according to the type of multicast service control.Realization is at the various controls of user's multicast service.
The IGMP agreement has 3 version: IGMPv1 at present, IGMPv2, IGMPv3. be that example illustrates user multicast service control method provided by the present invention according to embodiments of the invention with the IGMPv3 agreement. the user multicast service control method that is provided, based on the IGMPv3 protocol extension to become more meticulous multicast service control of IPTV user, use in the Ethernet of the inventive method, as shown in Figure 2, the multicast main control device is connected by the multicast forwarding equipment of mid-level network with multicast convergence device layer, Port+VLAN configuration interface channel access rights to multicast forwarding equipment, multicast forwarding equipment equipment is connected with the multicast access equipment of multicast access equipment layer, determines whether multicast packet is sent to multicast access equipment according to the indication of multicast main control device. and multicast access equipment directly is connected with multicast user's equipment.
As shown in Figure 3, the user multicast service method in the present embodiment may further comprise the steps:
S301, the IGMP member relation message that the subscriber equipment that the reception of multicast main control device is come from the upstream device transparent transmission sends;
According to IGMP v3 agreement, when subscriber equipment wants to insert certain multicast service, transparent transmission IGMP member relation message can make progress, IGMP member relation message is transparent to the multicast forwarding equipment of multicast convergence device layer through the multicast access equipment layer, is transparent to the multicast main control device by multicast forwarding equipment through the go-between layer.Therefore, in the transparent transmission function of multicast main control device, can collect the IGMP member relation message that subscriber equipment sends by upstream device.All devices on will guaranteeing from the user to multicast main control device path this moment can both be supported the IGMPv3 agreement, and be configured to IGMP snooping (IGMP Snooping) transparent transmission mode, adopt transparent transmission mode can guarantee that customer equipment identification such as MAC Address and IP address can both intactly upload on the multicast main control device.The multicast main control device can be collected the IGMP member relation message that subscriber equipment is uploaded on the multicast forwarding equipment of convergence-level or network layer.
S302 judges that the IGMP member relation message of receiving is the IGMPReport message of request access to multicast service, and still request disconnects the Leave message of multicast service, if IGMP Report message, execution in step S303, if the Leave message, execution in step S307;
S303 when IGMP member relation message is IGMP Report message, enters the interface (Port+VLAN) of multicast forwarding equipment according to message, determine whether the multicast address of this interface with the multicast service of being asked linked, if cannot, execution in step S304, if can, then execution in step 305;
The multicast main control device is according to the interface channel access rights that are each interface (Port+VLAN) configuration of connected multicast forwarding equipment, can determine whether the Port+VLAN that user's message enters multicast forwarding equipment can link with the multicast address of the multicast service of being asked, promptly whether the corresponding multicast data flow of multicast address of request be sent to the user from the interface that message enters multicast forwarding equipment.
S304, the multicast address of indication multicast forwarding equipment interface that message cannot be entered multicast forwarding equipment and the multicast service of being asked links, and forbids user's access to multicast service, end;
S305, the multicast address of indication multicast forwarding equipment interface that message can be entered multicast forwarding equipment and the multicast service of being asked links, permission user access to multicast service; While execution in step S306;
S306, when the multicast address of determining interface that message is entered multicast forwarding equipment and the multicast service of being asked links, write down the multicast information relevant with subscriber equipment, described multicast information comprises the customer equipment identification in the message, the multicast address that Port+VLAN, interface linked that message enters multicast forwarding equipment.Like this, the identification information of subscriber equipment and which interface channel this subscriber equipment is using under which interface information in the multicast main control device, have just been write down.Execution in step S309.
S307, when IGMP member relation message was the Leave message, the multicast main control device indicated multicast forwarding equipment to disconnect the interface that the Leave message enters multicast forwarding equipment on the one hand, the linking of the multicast address of the multicast service that disconnects with request.One side execution in step S308;
S308, the multicast address of the multicast service that the multicast main control device will disconnect with customer equipment identification, interface that the Leave message enters multicast forwarding equipment, the request of carrying in the Leave message link the multicast information that is mated, from the multicast information that is write down, delete.
S309, because the multicast main control device is to the interface of its corresponding customer equipment identification of user record of access to multicast service such as MAC Address and IP address etc., user's receiving group stream and receive which type of multicast data flow, can on the multicast main control device, grasp the user's of all receiving group streams relevant information at any time, thereby based on these information, the multicast main control device can send control message at subscriber equipment by the IGMPv3 agreement of expansion to multicast access equipment, carries out the multicast service control of designated user equipment.
The multicast main control device is according to the multicast information that is write down in the present embodiment, obtain the customer equipment identification tabulation of same interface and same multicast address correspondence, transmission is carried out the multicast service control of the different user of the multicast data flow of the same multicast address correspondence of reception under the same interface at the control message of subscriber equipment; According to the multicast information that is write down, obtain the multicast address tabulation of same customer equipment identification correspondence; Transmission is carried out the multicast service control of the multicast data flow of the different multicast address correspondences that same subscriber equipment received at the control message of subscriber equipment.
During concrete enforcement, the above-mentioned multicast information of multicast main control device utilization record is set up user information database.Total control equipment is resolved IGMP Report or the Leave message of receiving, dynamically updates user information database.After user information database had been arranged, the keeper can check all dynamic subscribers' information at any time, and is very helpful to the follow-up customer service control that becomes more meticulous.User information database has 2 grades of organizational forms in the present embodiment:
1) interface channel level multicast user table
All subscriber equipmenies that interface channel level multicast user table will receive same multicast data flow on the same interface are organized into a table, several tables of Sheng Chenging leave in respectively under the interface channel information like this, and this table mainly comprises information such as table 1 (giving an example with Ethernet switch):
Table 1 interface channel level multicast user table
| Interface message | Multicast address (interface channel) | Interface channel subscriber's meter |
| ??port?1+vlan?1 | ??224.1.1.1 | ??xxxx.xxxx.xxxx??yyyy.yyyy.yyyy??............... |
| ??port?1+vlan?1 | ??224.1.1.2 | ??xxxx.xxxx.xxxx??zzzz.zzzz.zzzz??............... |
| ??............ | ??............... | ??.................. |
| ??port?2+vlan?2 | ??228.3.3.9 | ??aaaa.aaaa.aaaa??bbbb.bbbb.bbbb??............ |
| ??............ | ??............... | ??.................. |
2) device level global group broadcasting user table
Device level global group broadcasting user table is an index with the MAC Address of customer equipment identification such as subscriber equipment, preserves the relevant information of all downstream user equipment, and the multicast address tabulation of the same customer equipment identification correspondence of physical record mainly comprises information such as table 2:
Table 2 device level global group broadcasting user table
| The subscriber equipment MAC Address | User equipment (UE) IP | The receiving group address table |
| ??xxxx.xxxx.xxxx | ??xxxx.xxxxx.xxxx.xxxx | ??224.1.1.1??224.1.1.2??225.1.1.10............... |
| ??yyyy.yyyy.yyyy | ??yyyy.yyyy.yyyy.yyyy | ??226.1.1.1??226.1.1.2??228.1.1.10............... |
Therefore, among the step S306, the multicast main control device is included in the step of adding customer equipment identification and add the multicast address of subscriber equipment or correspondence in device level global group broadcasting user table in the interface channel level multicast user table when receiving IGMP Report record multicast information.
Among the step S308, the multicast main control device specifically is included in the corresponding customer equipment identification of deletion in the interface channel level multicast user table, and deletes customer equipment identification in device level global group broadcasting user table when receiving Leave message deletion multicast information.
The control message adopts IGMP agreement query message form in the present embodiment, by standard I GMP agreement query message is expanded acquisition: part content modification in the standard I GMP agreement query message is control message identification, customer equipment identification, multicast address, professional control command and Control Parameter, and it is the control message that described control message identification is used to identify the message that adopts IGMP agreement query message form.
The multicast main control device is concentrated the user multicast service control that becomes more meticulous according to above 2 grades multicast user's table.Broadly, the multicast service control that originally can only on multicast access equipment, carry out to direct-connected user, can be placed on the control that becomes more meticulous on the multicast main control device now, IGMP agreement query message by expansion sends the multicast access equipment of the control message of the control command that becomes more meticulous to bottom then, finally realizes distributed control.
Present embodiment is with the example that expands to the IGMPv3 agreement, and for 3 particular user multicast service controlled function example explanations, other multicast service controlled function implementation methods are similar.
For the IGMPv3 agreement, the content format of standard I GMPv3 agreement query message is referring to accompanying drawing 4.Each Field Definition of standard I GMPv3 agreement query message form is explained here no longer in detail.When the control message adopts IGMPv3 agreement query message form in the present embodiment, standard I GMPv3 agreement query message lattice are carried out following expansion obtain IGMPv3 message shown in Figure 5.Specifically carried out following expansion:
After Group Address field, originally the field that begins with complete 0 Resv field was in order to adapt to new demand, and content will be made following change, wherein:
1) the Resv field of original 4bit is complete 0 in standard I GMPv3 agreement query message, directly fills out fixed value 0x1 now as the control message identification, is used for and original standard I GMPv3 agreement query message is distinguished;
2) the 12bit memory word segment value Action Type after the Resv field, Action Type shows the user multicast service control types corresponding service control command that becomes more meticulous, altogether can value 4k type.
Present embodiment is an example with 3 kinds of professional control commands, and described control message is used to indicate multicast access equipment that subscriber equipment is carried out the multicast service cutout, and described professional control command is the cutout instruction; Described control message is used to indicate multicast access equipment restricting user equipment receiving multicast business, and described professional control command is the current limliting instruction; Described control message is used to indicate multicast access equipment that the bandwidth of subscriber equipment receiving multicast business is managed, and described professional control command is the Bandwidth Management instruction, and described Control Parameter is a bandwidth range.The definition of each professional control command is as shown in table 3,
The table 3 professional control command type list that becomes more meticulous
| Professional control command type becomes more meticulous | Corresponding ActionType |
| The force users cutout | ??Action?Type＝0x1 |
| Limited subscriber receiving group stream | ??Action?Type＝0x2 |
| The user bandwidth management | ??Action?Type＝0x3 |
| ??.............. | ??.............. |
3) 6 bytes after the Action the type field, the MAC Address of preserving customer equipment identification such as subscriber equipment, i.e. User Mac field.
4) after User Mac field, be the uncertain Data field of length, be used to preserve the Control Parameter of corresponding different Action Type, the Data field may be preserved respective value with different length.Such as: during Action Type=0x3, be the Bandwidth Management instruction, then the Data field is 4 bytes, shows the byte number of user interface bandwidth speed limit (Committed Access Rate, CAR Committed Access Rate).
IGMPv3 agreement query message by expansion can realize force users cutout, limited subscriber receiving group stream and user bandwidth management.
The multicast main control device sends in the process with the direct-connected multicast access equipment of subscriber equipment will controlling message, present embodiment is to increasing a switch control on each equipment of the IGMPv3 agreement query message that can receive expansion in the network, the equipment that receives the control message according to switch control determine will expansion the IGMPv3 message to transmit still be directly to handle.As shown in Figure 6, whether the equipment that can receive IGMPv3 agreement query message in the network to the handling process of IGMPv3 agreement query message is: when receiving IGMPv3 agreement query message, be 0 to judge that this IGMPv3 agreement query message still is a standard I GMPv3 agreement query message for the control message entirely according to Resv field in this message; When determining to be standard I GMPv3 agreement query message, handle by existing normal flow, promptly be transmitted to the user multicast forwarding unit, the multicast address situation that reports interface to link by multicast forwarding equipment; When determining the control message that expansion IGMPv3 agreement query message obtains, determine to continue to transmit this control message according to the switch that is its configuration, still directly handle; When determining to continue to transmit, do not change message content, from all outgoing interfaces this control message is forwarded, guarantee to send to all multicast group associated users; When determining directly to handle,, designated user equipment in the control message is carried out the relevant control of carrying out of the corresponding multicast service of multicast address of appointment in the message according to the professional control command in the control message.Have only the control switch of the direct-connected customer access equipment of the customer equipment identification relative user equipment of carrying in the message with control in the said equipment, indicate this multicast access equipment directly to handle, other is indication and directly transmits.
Be model with the Ethernet below, introduce a concrete embodiment.
A typical Ethernet multicast networking scene as shown in Figure 2.
In this multicast network, the terminal that has many consumers is all being watched different multicast data flows.Get wherein 3 users and be example, their mac address is respectively macA, macB, macC.The pairing multicast address situation of multicast service that 3 users insert respectively is: macA-224.1.1.1, macB-224.1.1.2, macC-224.1.1.3.
These users link on the multicast main control device by multistage intermediate equipment, and these intermediate equipments have all been opened the transparent transmission function of IGMP Snooping, and 2 grades of multicast users that collect on the multicast main control device show as follows respectively:
The interface channel level multicast user table of table 4 example
| Interface message | The interface channel | Interface channel subscriber's meter |
| ??port?1+vlan?1 | ??224.1.1.1 | ??macA.......... |
| ??port?1+vlan?2 | ??224.1.1.2 | ??macB.......... |
| ??........... | ??........... | ??.............. |
| ??port?2+vlan?2 | ??224.1.1.3 | ??macC.......... |
| ??........... | ??........... | ??.............. |
Device level multicast user's table of table 5 example
| User mac | User IP | The receiving group address table |
| ??macA | ??IPA | ??224.1.1.1 |
| ??macB | ??IPB | ??224.1.1.2 |
| ??macC | ??IPC | ??224.1.1.3 |
| ........ | ........ | ??.............. |
At this moment, become more meticulous that to carry out flow process as follows for the user multicast service control method:
1) force the multicast data flow of macA user's 224.1.1.1 to stop.Control message (i.e. Kuo Zhan IGMPv3 agreement query message) content in the multicast main control device structure business of becoming more meticulous this moment, needs special each field of filling in be: Group Address=224.1.1.1; Action Type=0x1; User Mac=macA; Data does not fill out; Then this message is sent out from outgoing interface and sent out, finally just can arrive on the multicast access equipment, the multicast forwarding clauses and subclauses of deleting the interface of this mac user's correspondence in the multicast forward table of this multicast access equipment get final product;
2) restriction macB user receives the multicast data flow of 224.1.1.2.Control message content in the multicast main control device structure business of becoming more meticulous this moment, needs special each field of filling in be: Group Address=224.1.1.2; Action Type=0x2; User Mac=macB; Data does not fill out; Then this message is sent out from outgoing interface and sent out, finally just can arrive on the access device, it is that the multicast data flow that does not allow macB user to receive 224.1.1.2 gets final product that IPTV CAC access control is set on this equipment;
3) specify macC user to receive on the bandwidth of multicast data flow of 224.1.1.3 and be limited to 2M byte.Control message content in the multicast main control device structure business of becoming more meticulous this moment, needs special each field of filling in be: GroupAddress=224.1.1.3; Action Type=0x3; User Mac=macC; Data fills in 4 byte content, Data=2*1024*1024; Then this message is sent out from outgoing interface and sent out, finally just can arrive on the incoming multicast access device, the CAR dispose multicast data flow 224.1.1.3 on this multicast access equipment on connection macC user's interface by QoS is limited to 2M and gets final product on the limiting bandwidth.
The multicast main control device 70 that is provided in the present embodiment as shown in Figure 7, comprising:
Request multicast processing unit 702 is used for entering the interface of described multicast forwarding equipment and the interface authority that is disposed according to message when described message is the request multicast message, determines whether the multicast address of this interface with the multicast service of being asked linked;
Incoming multicast indicating member 703 is used for indicating described multicast forwarding equipment that described interface and multicast address are linked when determining described interface linked with multicast address;
Preferably, this multicast main control device also comprises multicast delete cells 706, the message that is used for obtaining at the message collector unit is when disconnecting multicast message, will be with customer equipment identification in the message, interface that message enters described multicast forwarding equipment, disconnect the multicast information that multicast address mated of multicast service, from the multicast information that is write down, delete;
Disconnect multicast indicating member 707, be used for the message that obtains at the message collector unit when disconnecting multicast message, the indication multicast forwarding equipment disconnects linking of described interface and multicast address.
Preferably, the control message at subscriber equipment that described multicast control unit is sent sends to the direct-connected multicast access equipment of subscriber equipment and handles, described multicast access equipment carries out the multicast service control of the subscriber equipment direct-connected with it according to the control message, and described control message comprises customer equipment identification, multicast address, professional control command and Control Parameter.
The user multicast service control system that is provided in the present embodiment comprises: above-mentioned multicast main control device 70; Multicast access equipment 801 is used to receive the messages sent by user equipment direct-connected with it, and it is uploaded to multicast forwarding equipment, and the multicast data flow that the receiving group forwarding unit sends also sends it to subscriber equipment; The control message that the receiving group forwarding unit sends carries out the multicast service control of the subscriber equipment direct-connected with it according to described control message; Multicast forwarding equipment 802, be used for messages sent by user equipment that multicast access equipment is uploaded, send to described multicast main control device, according to the control of multicast main control device linking or disconnection with interface and multicast address, to send to multicast access equipment from the multicast data flow of multicast address after the link, the control message that the receiving group main control device sends, and send it to described multicast access equipment.
More than Pei Zhi example just is used to illustrate how to realize IPTV user's the multicast service control that becomes more meticulous based on the IGMPv3 protocol extension.Exemplary configuration gets rationally whether to improve does not influence principle and the method that the present invention will set forth, with and range of application and effect.It is the most reasonable and perfect how on earth to dispose and control, and need decide on concrete applied environment and situation, and this paper repeats no more.In addition, the maximum 4k kind of supporting of the type of the multicast service control command that becomes more meticulous can be expanded.Broadly, need only on multicast access equipment and can instruct by carrying out correspondence on the multicast main control device on upper strata by the multicast service control command message that becomes more meticulous, and be handed down to the access device execution the multicast service control that direct-connected user carries out.
In sum, adopt the method for the present invention can be at any support multicast, IGMPv3, in the network environment of IGMPSnooping transparent transmission function, transparent transmission function by lower floor's equipment, on the multicast main control device, collect all user profile, and make up multicast user's information bank of 2 grades. again according to this library information, on total control equipment, dispose the multicast service control command that becomes more meticulous, multicast service control message (i.e. Kuo Zhan IGMPv3 agreement query message) sends on the final multicast access equipment by becoming more meticulous, realize the become more meticulous function of multicast service control of IPTV user at last. solve existing multicast control technology can't be striden layer control user multicast service in the network of stratification a defective preferably, realized multicast user's centralized management, distributed coordination function.
In addition, the present invention sends the control message that becomes more meticulous and realizes by expansion IGMPv3 query message, but in fact this extended method is not limited in the query message of IGMPv3, equally also can do expansion to the query message of IGMPv1, v2 supports, collect multicast user's information in addition, also be not limited to mac and IP, the sign of the unique difference multicast end user device of other energy can play the effect the same with mac.This paper will not give unnecessary details these similar implementation methods as space is limited.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (11)
1. the control method of a user multicast service is characterized in that, comprising:
The multicast main control device obtains messages sent by user equipment by multicast forwarding equipment;
When described message is the request multicast message, enter the interface of described multicast forwarding equipment and the interface authority that is disposed according to message, determine whether the multicast address of this interface with the multicast service of being asked linked;
When determining described interface linked with multicast address, indicate described multicast forwarding equipment that described interface and multicast address are linked, and the record multicast information, described multicast information comprises the customer equipment identification in the message, the multicast address that interface, interface linked that message enters described multicast forwarding equipment;
According to the multicast information that is write down, send control message control multicast service at subscriber equipment.
2. the method for claim 1 is characterized in that,
At described message when disconnecting multicast message, will be with customer equipment identification in the message, interface that message enters described multicast forwarding equipment, disconnect the multicast information that multicast address mated of multicast service, from the multicast information that is write down, delete; And the indication multicast forwarding equipment disconnects linking of described interface and multicast address.
3. want 1 described method as right, it is characterized in that,
According to the multicast information that is write down, the control message that sends at subscriber equipment specifically comprises:
According to the multicast information that is write down, obtain the customer equipment identification tabulation of same interface and same multicast address correspondence;
Transmission is carried out the multicast service control of the different user of the multicast data flow of the same multicast address correspondence of reception under the same interface at the control message of subscriber equipment.
4. want 1 described method as right, it is characterized in that,
According to the multicast information that is write down, the control message that sends at subscriber equipment specifically comprises:
According to the multicast information that is write down, obtain the multicast address tabulation of same customer equipment identification correspondence;
Transmission is carried out the multicast service control of the multicast data flow of the different multicast address correspondences that same subscriber equipment received at the control message of subscriber equipment.
5. want 1～4 arbitrary described method as right, it is characterized in that,
The control message at subscriber equipment that is sent sends to the direct-connected multicast access equipment of subscriber equipment and handles, described multicast access equipment carries out the multicast service control of the subscriber equipment direct-connected with it according to the control message, and described control message comprises customer equipment identification, multicast address, professional control command and Control Parameter.
6. want 5 described methods as right, it is characterized in that,
Described control message adopts IGMP agreement query message form, by standard I GMP agreement query message is expanded acquisition:
Part content modification in the standard I GMP agreement query message is control message identification, customer equipment identification, multicast address, professional control command and Control Parameter, and it is the control message that described control message identification is used to identify the message that adopts IGMP agreement query message form.
7. method as claimed in claim 5 is characterized in that,
Described control message is used to indicate multicast access equipment that subscriber equipment is carried out the multicast service cutout, and described professional control command is the cutout instruction;
Or described control message is used to indicate multicast access equipment restricting user equipment receiving multicast business, and described professional control command is the current limliting instruction;
Or described control message is used to indicate multicast access equipment that the bandwidth of subscriber equipment receiving multicast business is managed, and described professional control command is the Bandwidth Management instruction, and described Control Parameter is a bandwidth range.
8. a multicast main control device is characterized in that, comprising:
The message collector unit is used for obtaining messages sent by user equipment by multicast forwarding equipment;
Request multicast processing unit is used for entering the interface of described multicast forwarding equipment and the interface authority that is disposed according to message when described message is the request multicast message, determines whether the multicast address of this interface with the multicast service of being asked linked;
The incoming multicast indicating member is used for indicating described multicast forwarding equipment that described interface and multicast address are linked when determining described interface linked with multicast address;
The multicast record cell when being used for determining described interface linked with described multicast address, writes down multicast information, and described multicast information comprises the customer equipment identification in the message, the multicast address that interface, interface linked that message enters described multicast forwarding equipment;
The multicast control unit is used for according to the multicast information that is write down, and sends the control message control multicast service at subscriber equipment.
9. multicast main control device as claimed in claim 8 is characterized in that, also comprises:
The multicast delete cells, the message that is used for obtaining at the message collector unit is when disconnecting multicast message, will be with customer equipment identification in the message, interface that message enters described multicast forwarding equipment, disconnect the multicast information that multicast address mated of multicast service, from the multicast information that is write down, delete;
Disconnect the multicast indicating member, be used for the message that obtains at the message collector unit when disconnecting multicast message, the indication multicast forwarding equipment disconnects linking of described interface and multicast address.
10. multicast main control device as claimed in claim 8 is characterized in that,
The control message at subscriber equipment that described multicast control unit is sent sends to the direct-connected multicast access equipment of subscriber equipment and handles, described multicast access equipment carries out the multicast service control of the subscriber equipment direct-connected with it according to the control message, and described control message comprises customer equipment identification, multicast address, professional control command and Control Parameter.
11. a user multicast service control system is characterized in that, comprising:
The described multicast main control device of claim 8;
Multicast access equipment is used to receive the messages sent by user equipment direct-connected with it, and it is uploaded to multicast forwarding equipment, and the multicast data flow that the receiving group forwarding unit sends also sends it to subscriber equipment; The control message that the receiving group forwarding unit sends carries out the multicast service control of the subscriber equipment direct-connected with it according to described control message;
Multicast forwarding equipment, be used for messages sent by user equipment that multicast access equipment is uploaded, send to described multicast main control device, according to the control of multicast main control device linking or disconnection with interface and multicast address, to send to multicast access equipment from the multicast data flow of multicast address after the link, the control message that the receiving group main control device sends, and send it to described multicast access equipment.
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