CN101155046A - Network control system and method for implementing multicast control - Google Patents
Network control system and method for implementing multicast control Download PDFInfo
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Abstract
The invention relates to a NGN technique and discloses a network control system and method of realizing multicast controlling, wherein the said network control system comprises a control functional entity and a multicast replication functional entity. The said method comprises: user sending the request for joining multicast service to the said network control system; the multicast control functional entity generating user multicast authority list and judging whether the multicast control functional entity has the permission of receiving the corresponding multicast service based on the user multicast authority list and sending the judge result to the multicast replication functional entity. The said multicast replication functional entity relays the corresponding multicast traffic flow to user with authority based on the information of the multicast control functional entity. The invention can control, manage and operate the multicast service in NGN network.
Description
Technical field
(Next Generation Network NGN), relates in particular to a kind of network control system and method that realizes multicast control in NGN to the present invention relates to next generation network.
Background technology
(Next Generation Network, in research process NGN), ITU-T and TISPAN have proposed structure and the essentially identical layering NGN of function network configuration respectively at next generation network.In order to make the user can realize the NGN service access whenever and wherever possible, and obtain seamless, high-quality business service, ITU-T has defined a network attachment control system (NetworkAttachment and Control Function in the transport layer of its NGN architectural framework, NACF), its structure as shown in Figure 1, mainly comprise network access control functions entity (Network Access Control FE), authentication and authentication function entity (Authentication ﹠amp; Authorization FE), user's representation function entity (User Profile FE), location management function entity (Location Management FE) etc.The network attachment control system can finish to the distribution of user's IP address and terminal configuration parameter, during the address assignment program or before the user authentication, according to the network insertion mandate of customer service inventory (profile), according to management of access network configuration, location management and the access network of customer service inventory etc.
In order to realize above-mentioned identical purpose, TISPAN has defined a Network Attachment Subsystem (Network Attachment Subsystem in the transport layer of its NGN architectural framework, NASS), by NASS finish distribution to user's IP address and terminal configuration parameter, during the address assignment program or before carry out user's authentication, according to the network insertion mandate of customer service inventory (profile), according to the management of access network configuration, location management and the access network of customer service inventory.
The architectural framework of NASS as shown in Figure 2, in the middle of numerous functional entitys of NASS, user network gateway configuration function (Customer Network Gateway Configuration Function, CNGCF) (Customer Premises Equipment CPE) offers the additional configuration information such as fire compartment wall control, QoS of user such as inside initialization and renewal the time to entity at client device.Access relay function (AccessRelay Function, ARF) entity plays relaying action between CPE and NASS, and it receives the network insertion request from CPE, and the request of preceding commentaries on classics CPE is to NASS.Network access configuration function (Network AccessConfiguration Function, NACF) entity mainly is responsible for user's distributing IP address, network configuration parameters etc. is provided, play DHCP (Dynamic Host Configuration Protocol, DHCP) server or remote subscriber pull out into authentication service (Remote Authentication Dial in UserService, RADIUS) effect such as server.Connection session location and memory function (ConnectivitySession Location and Repository Function, CLF) entity record distribute to the IP address of CPE and the network positioning information that provides by the NACF entity between contact, network location information and geographical location information between contact, the CLF entity also memory allocation IP address user identifier, user network QoS describe and with the relevant customer parameter of the privately owned locating information of user.User access authorization function (UserAccess Authorization Function, UAAF) entity carry out user rs authentication, based on the network insertion mandate of user network inventory, checking, the authorization message that wherein comes from the customer service inventory is stored in user's data of description function, and (Profile Database Function is PDBF) in the entity.PDBF entity stores user's authentication, authorization data, and the database of information relevant with network insertion configuration.Access management function (Access Management Function, AMF) entity transforms the network insertion request that the user sends, and the NACF entity is mail in IP address assignment and possible network configuration parameters request; And send request to the UAAF entity, by the mandate of UAAF object authentication user and network insertion, obtain user's access configuration parameter.
Current in these two kinds of NGN systems, all can be embodied as IP multimedia service (IPMultimedia Service, IMS) business, conventional fixed telephone network/Integrated Service Digital Network(ISDN) (PublicSwitched Telephone Network/Integrated Services Digital Network, PSTN/ISDN) provide access authentication control service, but but can't especially can not control and duplicate the function of aspect for streaming media service (as the IPTV business) provides support for these streaming media service provide multicast.
In traditional network, have following several scheme can realize multicast control:
Scheme one is the multicast controlling schemes, and this scheme provides an igmpinternet, the use in case this agreement is activated, and it can discern the port that is connected with multicast router automatically.When router receives that main frame passes through the request of IGMPReport message application adding multicast group, multicast router can be created one, and to comprise request type be that the packet of adding, multicast group address and main frame active mac addresses etc. sends to Layer 2 switch, when Layer 2 switch received this packet, switch was responsible for the forwarding behavior that the translation data bag is changed multicast group simultaneously.So far, this flux of multicast is only sent to those ports that link to each other with suitable IP multicast client computer by layer 2 ethernet switch.
Scheme two is multicast data flow controlling schemes, this scheme mainly is at multicast data flow control unit (MulticastTraffic Control Unit, MTCU) quantity that in the user is added multicast group is provided with maximum thresholding, and to different preferential of the setting of different multicast group, when multicast data flow control unit MTCU has reached the thresholding of its forwarding multicasting, if there is new user to add multicast group, multicast data flow control unit MTCU will be by user's priority, select the user of lowest priority to leave, and allow the user of new high priority add multicast group, thereby reach control to flux of multicast.
Scheme three is the controlled multicasting scheme, be mainly used in multicast router, Ethernet switch, the subscriber's main station that is connected with Ethernet switch, the system that portal server and aaa server are formed, in this system, act on user's authentication interface by the portal server, aaa server acts on the configuration of user multicast power, and by the interface between multicast router and the aaa server, and the authority configuration and the authentication of the interface acquisition user multicast group between multicast router and the portal service, the control Ethernet switch carries out multicast forwarding between Ethernet multicast router and Ethernet switch then.
More than several schemes, one of scheme has solved the IP multicast message and spread unchecked problem in the network that Layer 2 switch is formed, according to the method, no matter whether the user obtains the authority of this multicast message, the user just can obtain multicast message as long as add multicast group.Therefore, the network equipment can't be controlled the multicast message forwarding according to user right; Scheme two has guaranteed that the high user of priority who adds multicast group at first obtains multicast message, but has added the quantity of multicast owing to this method has limited the user, thereby caused some people can't obtain multicast information by number of users in the restriction multicast group; The interface input username and password that must provide by the portal server in the scheme three authenticates, and does not consider the access authentication of alternate manner.Secondly must on aaa server, preserve the authority that the user adds multicast group, and the expansion by the Radius agreement, the configuration of user's multicast authority is sent to multicast router, if the user does not then consider by alternate manner and configuration of other functional entity and transmission user multicast power; The advice of charge information that this scheme is not considered to produce according to the IP multicast data flow is to aaa server; This scheme is not considered the user's online state yet; This scheme is not considered the content of resource and admission control aspect yet, considers the QOS of IP multicast according to resource.
Summary of the invention
In order in the multicast control of NGN, to overcome above shortcoming, the invention provides a kind of network control system of realizing multicast control, make multicast service in NGN, can control and transmit with resource and admittance control mode, thereby realization multicast service may command can be managed and can be runed according to user's access authority, the authority of group business stream.
The present invention also provides a kind of method that realizes multicast control in NGN, make multicast service in NGN, can control and transmit with the admittance control mode of resource, realize that the may command of multicast service can be managed and can be runed according to user's access authority, the authority of group business stream.
Network control system provided by the invention, comprise service control function system, resource acceptance control system, authentication and authentication function entity, access management function entity and access control function entity, it is characterized in that, also comprise multicast controlled function entity and multicast replication functional entity, wherein
Multicast controlled function entity is used to generate the user multicast power table, and judges according to the user multicast power table whether the requesting users of initiating adding multicast service group has the authority that receives corresponding multicast service;
The multicast replication functional entity is used to receive Client-initiated and adds the request of multicast service group and be transmitted to multicast controlled function entity, and duplicates and forwarding multicasting message to the user that authority is arranged according to the notice of multicast controlled function entity.
Optionally, described multicast controlled function entity comprises:
The multicast information acquiring unit is used for from the Subscriber Management System acquisition user multicast group of service control function system and the corresponding informance of multicast service;
The resource information acquiring unit, being used for from resource acceptance control system is the user applies Internet resources, judges whether the user can obtain the resource of receiving multicast business, and the record network resource information;
The user profile acquiring unit is used for obtaining user profile from the access management function entity, and described user profile comprises user's MAC Address, VLAN sign and user online status;
The user multicast power table generates the unit, is used for generating the user multicast power table according to user profile of obtaining and multicast group information;
The user right judging unit is used to judge whether the requesting users of initiating adding multicast service group has the authority that adds the multicast service group.
Optionally, described multicast controlled function entity also comprises:
Memory cell is used to store described user multicast power table;
Receiving element is used for the request of the subscriber to joining multicast service group of receiving group copy function entity forwarding;
Notification unit is used for described user's authority information is sent to the multicast replication functional entity.
Optionally, described multicast controlled function entity also comprises:
The charge information transmitting element is used for sending user multicast traffic statistics information and the user profile that obtains from the multicast replication functional entity to authentication and authentication function entity.
Optionally, described multicast replication functional entity comprises:
Receiving element is used to receive the request of the adding multicast service group that the user sends;
The request message retransmission unit is used for after obtaining user profile, and the request of subscriber to joining multicast service group is transmitted to multicast controlled function entity;
The entitlement messages receiving element is used for the user right information corresponding to the multicast service of being asked that receiving group controlled function entity sends;
The user profile acquiring unit, the user right information acquisition request that is used for transmitting according to the entitlement messages receiving element adds user's Copy Info of multicast service group, comprises multicast group address and user's MAC address;
Multicast replication control tabulation generation unit, the user profile that is used for obtaining according to the user profile acquiring unit generates multicast replication control tabulation;
Memory cell is used to store described multicast replication control tabulation;
The multicast message copied cells is used for according to described user right information, to user's duplicated multicast message.
Optionally, described multicast replication functional entity further comprises:
The multicast message receiving element is used for the receiving group message, and is transmitted to the multicast message copied cells;
The multicast message retransmission unit is used for the multicast message that the multicast message copied cells duplicates is transmitted to the specific user.
Optionally, described multicast replication functional entity also comprises:
The charge information transmitting element is used for sending user multicast traffic statistics information and the user profile that obtains by statistics to authentication and authentication function entity.
Optionally, described multicast controlled function entity will be carried out following steps when generating the user multicast power table:
To resource acceptance control system is the user applies Internet resources, judges whether the user can obtain the resource of receiving multicast business, and the record network resource information;
Obtain to comprise that by the access management function entity user's MAC Address, VLAN identify the user profile of user online status;
Obtain the corresponding informance of user multicast group and multicast service by the Subscriber Management System in the service control function system;
Obtain user's authority information by access management function entity or authentication and authentication function entity;
Related above-mentioned some or all of information forms the user multicast power table.
Optionally, when the multicast replication functional entity when the user E-Packets, the multicast replication functional entity carries out flux of multicast statistics simultaneously, and with this flux of multicast statistical information with corresponding user profile sends to authentication and the authentication function entity charges.
Optionally, when the multicast replication functional entity when the user E-Packets, the multicast replication functional entity carries out the flux of multicast statistics simultaneously, and this flux of multicast statistical information and corresponding user profile sent to multicast controlled function entity, this information is transmitted to authentication to multicast controlled function entity and the authentication function entity charges.
The method of realization multicast control provided by the invention may further comprise the steps:
A, user initiate to add the request of multicast service to network control system;
B, multicast controlled function entity generate the user multicast power table, judge according to the user multicast power table whether the user has the authority that receives corresponding multicast service, and generation user right information sends to the multicast replication functional entity;
C, multicast replication functional entity transmit corresponding group business stream according to the notice of multicast controlled function entity to the user that authority is arranged.
Optionally, before described steps A, comprise that also the user is linked into the step of network control system by the relay function entity.
Optionally, before described steps A, comprise that also the user finishes the step of network access authentication in network control system.
Optionally, described network access authentication is to be finished by authentication in the network control system and authentication function entity.
Optionally, described step C specifically may further comprise the steps:
After described multicast replication functional entity was received the user right information of multicast controlled function entity transmission, the multicast group information and the user's MAC address that add according to the user applies that authority is arranged generated multicast replication control tabulation;
Described multicast replication functional entity duplicates and forwarding multicasting message to the user that authority is arranged according to the information in the multicast replication control tabulation.
Optionally, further comprising the steps of after the described step C:
The multicast replication functional entity sends specific user's flux of multicast statistical information and user profile to authentication and authentication function entity;
Authentication and authentication function entity charge to this user according to described flux of multicast statistical information.
Optionally, further comprising the steps of after the described step C:
Described multicast replication functional entity sends specific user's flux of multicast statistical information and user profile to multicast controlled function entity;
Authentication and the authentication function entity of described multicast controlled function entity in network control system transmitted above-mentioned information;
Described authentication and authentication function entity charge to this user according to described flux of multicast statistical information.
Optionally, described user multicast power table comprises user profile, multicast service and network resource information.
Optionally, described user profile comprises user online status, user's MAC address, VLAN sign and user right.
Optionally, the step of described multicast controlled function entity generation user multicast power table specifically comprises:
After multicast controlled function entity is received the request of subscriber to joining multicast service,
To resource acceptance control system is the user applies Internet resources, judges whether the user can obtain the resource of receiving multicast business, and the record network resource information;
Obtain to comprise that by the access management function entity user's MAC Address, VLAN identify the user profile of user online status;
Obtain the corresponding informance of user multicast group and multicast service by the Subscriber Management System in the service control function system; Obtain user's authority information by access management function entity or authentication and authentication function entity;
Related above-mentioned some or all of information forms the user multicast power table.
The present invention also provides another to realize the method for multicast control, it is characterized in that, comprising:
The user initiates to add the request of multicast service to network control system;
Resource acceptance control system is checked the network control system network resource reservation based on moving speed that whether has been user applies, if the network resource reservation based on moving speed that has been user applies, then the multicast replication functional entity is transmitted corresponding group business stream to the user.
Optionally, described network control system is the user applies network resource reservation based on moving speed step specifically comprises:
Network control system sends resource reservation request message to resource acceptance control system behind access authentication of user, carry this user's qos parameter;
Resource acceptance control system according to described user's qos parameter and its other resources allocation strategy to this user's allocation of network resources;
Resource acceptance control system is fed back to the resource information that the user distributes to network control system.
Optionally, after described resource acceptance control system is fed back to the resource information of user's distribution to network control system, if this user does not apply for adding multicast service as yet, then resource acceptance control system is after receiving that other Client-initiateds add the request of multicast service, give the user of back application with this resource allocation, but the user of this back application abdicates its shared resource when must add multicast service in the user applies of application resource reservation.
Optionally, after described resource acceptance control system is fed back to the resource information of user's distribution to network control system, can not again this user applies reserved resource be distributed to other users and use.
Optionally, after described resource acceptance control system is fed back to the resource information of user's distribution to network control system, after receiving that the Client-initiated of applying for reserved resource adds the request of multicast service, inquire about this user to network control system whether this reserved resource of authority acquiring is still arranged, if this reserved resource is distributed to this CU.
Optionally, described qos parameter comprises bandwidth and type of service.
Description of drawings
Fig. 1 is the structure chart of the NACF in the NGN architectural framework of ITU-T in the prior art.
Fig. 2 is the structure chart of NASS in the NGN architectural framework of TISPAN in the prior art;
Fig. 3 is a method flow diagram one of realizing multicast control in the embodiment of the invention;
Fig. 4 is a method flow diagram two of realizing multicast control in the embodiment of the invention;
Fig. 5 is the structure chart of the multicast controlled function entity in the network control system of the present invention;
Fig. 6 is the structure chart of the multicast replication functional entity in the network control system of the present invention;
Fig. 7 is a network control system structure chart one of realizing multicast control in the embodiment of the invention;
Fig. 8 is a network control system structure chart two of realizing multicast control in the embodiment of the invention.
Embodiment
The inventive method thinking is: after the user initiates the request of adding multicast service group to network control system, the multicast replication functional entity is transmitted to multicast controlled function entity with request message, whether multicast controlled function entity has the access authority according to certain rule judgment user, and indicate the multicast replication functional entity to duplicate and send multicast message to the user according to user's authority, realization multicast service may command can be managed and can be runed.
Network control system provided by the invention has increased multicast replication functional entity and multicast controlled function entity in existing system, make multicast service can control and transmit in the access control mode of resource according to user's access authority, the authority of group business stream in NGN, realization multicast service may command can be managed and can be runed.
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in further detail.
Referring to Fig. 3,, be applied in network attachment shown in Figure 7 and the controlled function system for realizing the method flow diagram one of multicast control in the embodiment of the invention.Comprise:
This step specifically comprises:
Multicast controlled function entity is the user applies Internet resources to resource and accommodating control function system, judges whether the user can obtain the resource of receiving multicast business, and the record network resource information;
Multicast controlled function entity identifies user profile such as user online status by MAC Address, the VLAN that the network access control functions entity obtains the user;
Multicast controlled function entity obtains the corresponding informance of user multicast group and multicast service by the Subscriber Management System in the service control function system;
Multicast controlled function entity obtains user's authority information by network access control functions entity or authentication and authentication function entity;
All or part of information in the above-mentioned information of multicast controlled function entity associated forms the user multicast power table.
Wherein, if system does not have distributable internet resource, user not to order or register this multicast service or the user is rolled off the production line immediately after the request that initiate to add multicast service, multicast controlled function entity can think that all the user does not have multicast authority.
Multicast controlled function entity sends information such as user's multicast service group and MAC Address simultaneously when sending a notification message, the multicast replication functional entity is set up multicast replication control tabulation according to this information, and relative users is issued in the duplicated multicast circulation.Simultaneously, the multicast replication functional entity can also be finished billing function, promptly when sending multicast data flow, the user carrying out traffic statistics, and traffic statistics and user profile are sent to authentication and authentication function entity or send to multicast controlled function entity earlier, be transmitted to authentication and authentication function entity by multicast controlled function entity again, relative users is chargeed.
Referring to Fig. 4,, be applied in the Network Attachment Subsystem shown in Figure 8 for realizing the method flow diagram two of multicast control in the embodiment of the invention.Comprise:
Step 401, the user is linked among the Network Attachment Subsystem NASS by access relay function entity A RF;
This step specifically comprises:
Multicast controlled function entity is the user applies Internet resources to Resource and Admission Control Sub-system RACS, judges whether the user can obtain the resource of receiving multicast business, and the record network resource information;
Multicast controlled function entity identifies user profile such as user online status by MAC Address, the VLAN that user access authorization function entity obtains the user;
Multicast controlled function entity obtains the corresponding informance of user multicast group and multicast service by the Subscriber Management System among professional control subsystem and the application SCSA;
Multicast controlled function entity obtains user's authority information by user access authorization function entity;
All or part of information in the above-mentioned information of multicast controlled function entity associated forms the user multicast power table.
Wherein, if system does not have distributable internet resource, user not to order or register this multicast service or the user is rolled off the production line immediately after the request that initiate to add multicast service, multicast controlled function entity can think that all the user does not have multicast authority.
Multicast controlled function entity sends information such as user's multicast service group and MAC Address simultaneously when sending a notification message, the multicast replication functional entity is set up multicast replication control tabulation according to this information, and relative users is issued in the duplicated multicast circulation.Simultaneously, the multicast replication functional entity can also be finished billing function, promptly when sending multicast data flow, the user carrying out traffic statistics, and traffic statistics and user profile are sent to user access authorization function entity or send to multicast controlled function entity earlier, be transmitted to user access authorization function entity by multicast controlled function entity again, relative users is chargeed.
The present invention also provides another to realize the method for multicast control, comprising:
The user initiates to add the request of multicast service to network control system;
Resource acceptance control system is checked the network control system network resource reservation based on moving speed that whether has been user applies, if the network resource reservation based on moving speed that has been user applies, then the multicast replication functional entity is transmitted corresponding group business stream to the user.
Wherein, described network control system is that the step of user applies network resource reservation based on moving speed specifically comprises:
Network control system sends resource reservation request message to resource acceptance control system behind access authentication of user, carry this user's qos parameter (comprising bandwidth and type of service etc.);
Resource acceptance control system according to described user's qos parameter and its other resources allocation strategy to this user's allocation of network resources;
Resource acceptance control system is fed back to the resource information that the user distributes to network control system.
Comprise for the disposition behind the user applies resource reservation in the method for this realization multicast control:
After resource acceptance control system is fed back to the resource information of user's distribution to network control system, if this user does not apply for adding multicast service as yet, then resource acceptance control system is after receiving that other Client-initiateds add the request of multicast service, give the user of back application with this resource allocation, but the user of this back application abdicates its shared resource when must add multicast service in the user applies of application resource reservation; With
After resource acceptance control system is fed back to the resource information of user's distribution to network control system, can not again this user applies reserved resource be distributed to other users and use.
In order to improve the fail safe of network, can also realize like this: after resource acceptance control system is fed back to the resource information of user's distribution to network control system, after receiving that the Client-initiated of applying for reserved resource adds the request of multicast service, inquire about this user to network control system whether this reserved resource of authority acquiring is still arranged, if this reserved resource is distributed to this CU.
Introduce network control system provided by the invention below, referring to Fig. 7 and Fig. 8.
Fig. 7 is the improvement to the network attachment of ITU-T in the prior art and the NACF of controlled function system, multicast controlled function entity MCF and multicast replication functional entity MRF have been increased, wherein, the multicast replication functional entity connects multicast controlled function entity and access relay function entity, is used for flowing to user's forwarding multicasting that authority is arranged by the access relay function entity according to the notice of multicast controlled function entity; Multicast controlled function entity connects authentication and authentication function entity and network access control functions entity, and these two functional entitys can both provide user profile to multicast controlled function entity; Multicast controlled function entity is connected to resource and acceptance control system, is used to the user applies resource; Multicast controlled function entity is connected to the service control function system, obtains the information of the multicast service group of user applies.The processing procedure that realizes multicast control in network control system shown in Figure 7 comprises:
The user adheres to and the controlled function system by access relay function entity access network, after the user authenticates and obtain to pass through in network attachment and controlled function system, adds multicast service by the application of access relay function entity;
Multicast controlled function entity MCF is connected to authentication and authentication function entity, for multicast user's sender and recipient authenticates, and the statistical information of the multicast data flow that the multicast user's who collects sender is sent and the multicast data flow statistical information that the recipient receives send authentication and authentication function entity to, is convenient to according to the statistical information of multicast data flow the user be chargeed;
Multicast controlled function entity MCF is connected to (the Service ControlFunctions of service control function system, SCF) (as the Subscriber Management System in the IPTV operation system, home subscriber server in the IMS system etc.) on, MCF obtains the information (as the corresponding relation of IPTV channel and multicast group address in the IPTV operation system, user's grade and the priority etc. of row) of the multicast service group of user applies mandate from the SCF of service control function system;
Multicast controlled function entity MCF is connected to resource and (the Resource andAdmission Control Functions of accommodating control function system, RACF) on, from resource and the RACF of accommodating control function system according to the specific strategy rule, check Resource Availability, distribute the resource of forwarding multicasting message for authorized user;
Multicast controlled function entity MCF is connected on the network access facility entity, obtains user profile (as user's online state, MAC Address, VLAN sign, user's authority etc.) from the network access facility entity;
Multicast controlled function entity obtains user's authority information by interconnected with above system or functional entity, forms the user multicast power table, and controls user's multicast service access according to the user multicast power table.
The multicast replication functional entity is connected to multicast controlled function entity, when user applies adds multicast group, multicast controlled function entity is according to the user multicast power table, send user profile and authority information to the multicast replication functional entity, the multicast replication functional entity adds the information of multicast group according to user applies, form multicast replication control tabulation (Multicast Replication Control List, MRCL comprises multicast group address, user's MAC address etc.), and according to the user multicast access tabulate MRCL to user's duplicated multicast Business Stream;
The multicast replication functional entity connects the access relay function entity, multicast data flow is transmitted to the subscriber equipment of authority by the access relay function entity;
The multicast replication functional entity can also carry out the flux of multicast statistics in forwarding multicasting stream, and statistical information and user profile sent to authentication and authentication function entity, perhaps earlier statistical information is sent to multicast controlled function entity, by multicast controlled function entity traffic statistics information and user profile are sent to authentication and authentication function entity then, conveniently the user is chargeed.
Fig. 8 is the improvement to the Network Attachment Subsystem NASS in the NGN architectural framework of TISPAN in the prior art, multicast controlled function entity MCF and multicast replication functional entity MRF have been increased, wherein, the multicast replication functional entity connects multicast controlled function entity and access relay function entity, is used for flowing to the user equipment (UE) forwarding multicasting that authority is arranged by the access relay function entity according to the notice of multicast controlled function entity; Multicast controlled function entity connects user access authorization function entity UAAF and access management function entity A MF obtains user profile; Multicast controlled function entity is connected to Resource and Admission Control Sub-system RACS, is used to the user applies Internet resources; Multicast controlled function entity is connected to professional control subsystem and uses SCSA, is used to obtain the information of the multicast service group of user applies.The processing procedure that realizes multicast control in network control system shown in Figure 8 comprises:
User equipment (UE) is linked among the Network Attachment Subsystem NASS by access relay function entity A RF, carries out access authentication of user by user access authorization function entity UAAF, and the user adds multicast service by access relay function entity A RF to the NASS application;
Multicast controlled function entity is connected to the user access authorization function, for multicast user's sender and recipient authenticates, and the statistical information of the multicast data flow that the multicast user's who collects sender and recipient are sent and the multicast data flow statistical information that the recipient receives send UAAF to, and in the statistical information according to multicast data flow the user is chargeed;
Multicast controlled function entity is connected to professional control subsystem and uses SCSA (as the Subscriber Management System in the IPTV operation system, home subscriber server in the IMS system etc.), multicast controlled function entity obtains the information (as the corresponding relation of IPTV channel and multicast address in the IPTV operation system, user's priority etc.) of the multicast service group of user applies mandate from SCSA;
Multicast controlled function entity is connected to Resource and Admission Control Sub-system RACS, judges whether RACS can distribute the resource that sends corresponding multicast according to certain strategy for the user;
The multicast controlled function connects access management function AMF, obtain user profile (for example user's online state, MAC Address, VLAN sign, user right etc.) from access management function, also can obtain access authentication of user information, send multicast data flow according to user's online information;
Multicast controlled function entity obtains user's authority information by interconnected with above system or functional entity, forms the user multicast power table, and controls user's multicast service access according to the user multicast power table.
The multicast replication functional entity is connected to multicast controlled function entity, when user applies adds multicast group, multicast controlled function entity is according to the user multicast power table, send user profile and authority information to the multicast replication functional entity, the multicast replication functional entity adds the information of multicast group according to user applies, form multicast replication control tabulation (Multicast Replication Control List, MRCL comprises multicast group address, user's MAC address etc.), and according to the user multicast access tabulate MRCL to user's duplicated multicast Business Stream;
The multicast replication functional entity connects access relay function entity A RF, multicast data flow is transmitted to the subscriber equipment of authority by the access relay function entity;
The multicast replication functional entity can also carry out the flux of multicast statistics in forwarding multicasting stream, and statistical information and user profile sent to user access authorization function entity, perhaps earlier statistical information is sent to multicast controlled function entity, by multicast controlled function entity traffic statistics information and user profile are sent to user access authorization function entity then, conveniently the user is chargeed.
As shown in Figure 5, structure chart for the multicast controlled function entity in the network control system of the present invention, be applied to comprise in Fig. 7 or the network control system shown in Figure 8: receiving element, the user multicast power table generates the unit, memory cell, the user right judging unit, notification unit, resource information acquiring unit, multicast information acquiring unit, user profile acquiring unit and charge information transmitting element.Wherein,
Receiving element is used for the request of the subscriber to joining multicast service group of receiving group copy function entity forwarding;
The user multicast power table generates the unit, is used for after the request of receiving subscriber to joining multicast service, generates the user multicast power table according to the user profile of obtaining;
Wherein, obtain of the statement of the step of user profile referring to the method part.
Memory cell is used to store described user multicast power table;
The user right judging unit is used for judging according to the user multicast power table whether the requesting users of initiating adding multicast service group has the authority that adds the multicast service group;
Notification unit, the authority information that is used for user that the user right judging unit is obtained sends to the multicast replication functional entity;
The multicast information acquiring unit is used for Subscriber Management System or the professional control subsystem among Fig. 8 from the service control function system of Fig. 7 and uses the corresponding informance that obtains user multicast group and multicast service among the SCSA;
The resource information acquiring unit is used for being the user applies Internet resources from the resource of Fig. 7 and the Resource and Admission Control Sub-system accommodating control function system or Fig. 8, judges whether the user can obtain the resource of receiving multicast business, and writes down network resource information;
The user profile acquiring unit, be used for from the network access control functions entity of Fig. 7 or Fig. 7, obtaining among the user access authorization function UAAF in the authentication and authentication function entity or Fig. 8 user's MAC Address, VLAN sign, user profile such as user online status;
The charge information transmitting element is used for sending user multicast traffic statistics information and the user profile that obtains from the multicast replication functional entity to the authentication of Fig. 7 and the user access authorization function UAAF among authentication function entity or Fig. 8.
As shown in Figure 6, be the structure chart of the multicast replication functional entity in the network control system of the present invention, be applied to comprise in Fig. 7 or the network control system shown in Figure 8:
Receiving element is used to receive the request of the adding multicast service group that the user sends;
The user profile acquiring unit is used for extracting transmission and adds multicast service group requesting users Copy Info, comprises multicast group address and user's MAC address;
Multicast replication control tabulation generation unit, the user profile that is used for obtaining according to the user profile acquiring unit generates multicast replication control tabulation;
Memory cell is used to store described multicast replication control tabulation;
The request message retransmission unit is used for after obtaining user profile, and the request of subscriber to joining multicast service group is transmitted to multicast controlled function entity;
The entitlement messages receiving element is used for the user right information corresponding to the multicast service of being asked that receiving group controlled function entity sends;
The multicast message copied cells is used for according to described user right information, obtain user's Copy Info from memory cell after, to user's duplicated multicast message;
The multicast message receiving element is used for the receiving group message, and is transmitted to the multicast message copied cells;
The multicast message retransmission unit, the multicast message that is used for the multicast message copied cells is duplicated is transmitted to the specific user by the access relay function entity of Fig. 7 or the access relay function ARF among Fig. 8;
The charge information transmitting element is used for sending user multicast traffic statistics information and the user profile that obtains by statistics to authentication and authentication function entity.
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 (26)
1. network control system, comprise service control function system, resource acceptance control system, authentication and authentication function entity, access management function entity and access control function entity, it is characterized in that, also comprise multicast controlled function entity and multicast replication functional entity, wherein
Multicast controlled function entity is used to generate the user multicast power table, and judges according to the user multicast power table whether the requesting users of initiating adding multicast service group has the authority that receives corresponding multicast service;
The multicast replication functional entity is used to receive Client-initiated and adds the request of multicast service group and be transmitted to multicast controlled function entity, and duplicates and forwarding multicasting message to the user that authority is arranged according to the notice of multicast controlled function entity.
2. network control system as claimed in claim 1 is characterized in that, described multicast controlled function entity comprises:
The multicast information acquiring unit is used for from the Subscriber Management System acquisition user multicast group of service control function system and the corresponding informance of multicast service;
The resource information acquiring unit, being used for from resource acceptance control system is the user applies Internet resources, judges whether the user can obtain the resource of receiving multicast business, and the record network resource information;
The user profile acquiring unit is used for obtaining user profile from the access management function entity, and described user profile comprises user's MAC Address, VLAN sign and user online status;
The user multicast power table generates the unit, is used for generating the user multicast power table according to user profile of obtaining and multicast group information;
The user right judging unit is used to judge whether the requesting users of initiating adding multicast service group has the authority that adds the multicast service group.
3. network control system as claimed in claim 2 is characterized in that, described multicast controlled function entity also comprises:
Memory cell is used to store described user multicast power table;
Receiving element is used for the request of the subscriber to joining multicast service group of receiving group copy function entity forwarding;
Notification unit is used for described user's authority information is sent to the multicast replication functional entity.
4. network control system as claimed in claim 3 is characterized in that, described multicast controlled function entity also comprises:
The charge information transmitting element is used for sending user multicast traffic statistics information and the user profile that obtains from the multicast replication functional entity to authentication and authentication function entity.
5. network control system as claimed in claim 1 is characterized in that, described multicast replication functional entity comprises:
Receiving element is used to receive the request of the adding multicast service group that the user sends;
The request message retransmission unit is used for after obtaining user profile, and the request of subscriber to joining multicast service group is transmitted to multicast controlled function entity;
The entitlement messages receiving element is used for the user right information corresponding to the multicast service of being asked that receiving group controlled function entity sends;
The user profile acquiring unit, the user right information acquisition request that is used for transmitting according to the entitlement messages receiving element adds user's Copy Info of multicast service group, comprises multicast group address and user's MAC address;
Multicast replication control tabulation generation unit, the user profile that is used for obtaining according to the user profile acquiring unit generates multicast replication control tabulation;
Memory cell is used to store described multicast replication control tabulation;
The multicast message copied cells is used for according to described user right information, to user's duplicated multicast message.
6. network control system as claimed in claim 5 is characterized in that, described multicast replication functional entity further comprises:
The multicast message receiving element is used for the receiving group message, and is transmitted to the multicast message copied cells;
The multicast message retransmission unit is used for the multicast message that the multicast message copied cells duplicates is transmitted to the specific user.
7. network control system as claimed in claim 6 is characterized in that, described multicast replication functional entity also comprises:
The charge information transmitting element is used for sending user multicast traffic statistics information and the user profile that obtains by statistics to authentication and authentication function entity.
8. network control system as claimed in claim is characterized in that, described multicast controlled function entity will be carried out following steps when generating the user multicast power table:
To resource acceptance control system is the user applies Internet resources, judges whether the user can obtain the resource of receiving multicast business, and the record network resource information;
Obtain to comprise that by the access management function entity user's MAC Address, VLAN identify the user profile of user online status;
Obtain the corresponding informance of user multicast group and multicast service by the Subscriber Management System in the service control function system;
Obtain user's authority information by access management function entity or authentication and authentication function entity;
Related above-mentioned some or all of information forms the user multicast power table.
9. network control system as claimed in claim 8, it is characterized in that, when the multicast replication functional entity when the user E-Packets, the multicast replication functional entity carries out flux of multicast statistics simultaneously, and with this flux of multicast statistical information with corresponding user profile sends to authentication and the authentication function entity charges.
10. network control system as claimed in claim 8, it is characterized in that, when the multicast replication functional entity when the user E-Packets, the multicast replication functional entity carries out the flux of multicast statistics simultaneously, and this flux of multicast statistical information and corresponding user profile sent to multicast controlled function entity, this information is transmitted to authentication to multicast controlled function entity and the authentication function entity charges.
11. a method that realizes multicast control is characterized in that, may further comprise the steps:
A, user initiate to add the request of multicast service to network control system;
B, multicast controlled function entity generate the user multicast power table, judge according to the user multicast power table whether the user has the authority that receives corresponding multicast service, and generation user right information sends to the multicast replication functional entity;
C, multicast replication functional entity transmit corresponding group business stream according to the notice of multicast controlled function entity to the user that authority is arranged.
12. method as claimed in claim 11 is characterized in that, before described steps A, comprises that also the user is linked into the step of network control system by the relay function entity.
13. method as claimed in claim 11 is characterized in that, before described steps A, comprises that also the user finishes the step of network access authentication in network control system.
14. method as claimed in claim 13 is characterized in that, described network access authentication is to be finished by authentication in the network control system and authentication function entity.
15. method as claimed in claim 11 is characterized in that, described step C specifically may further comprise the steps:
After described multicast replication functional entity was received the user right information of multicast controlled function entity transmission, the multicast group information and the user's MAC address that add according to the user applies that authority is arranged generated multicast replication control tabulation;
Described multicast replication functional entity duplicates and forwarding multicasting message to the user that authority is arranged according to the information in the multicast replication control tabulation.
16. method as claimed in claim 11 is characterized in that, and is further comprising the steps of after the described step C:
The multicast replication functional entity sends specific user's flux of multicast statistical information and user profile to authentication and authentication function entity;
Authentication and authentication function entity charge to this user according to described flux of multicast statistical information.
17. method as claimed in claim 11 is characterized in that, and is further comprising the steps of after the described step C:
Described multicast replication functional entity sends specific user's flux of multicast statistical information and user profile to multicast controlled function entity;
Authentication and the authentication function entity of described multicast controlled function entity in network control system transmitted above-mentioned information;
Described authentication and authentication function entity charge to this user according to described flux of multicast statistical information.
18., it is characterized in that described user multicast power table comprises user profile, multicast service and network resource information as any described method among the claim 11-17.
19. method as claimed in claim 18 is characterized in that, described user profile comprises user online status, user's MAC address, VLAN sign and user right.
20. method as claimed in claim 19 is characterized in that, the step that described multicast controlled function entity generates the user multicast power table specifically comprises:
After multicast controlled function entity is received the request of subscriber to joining multicast service,
To resource acceptance control system is the user applies Internet resources, judges whether the user can obtain the resource of receiving multicast business, and the record network resource information;
Obtain to comprise that by the access management function entity user's MAC Address, VLAN identify the user profile of user online status;
Obtain the corresponding informance of user multicast group and multicast service by the Subscriber Management System in the service control function system; Obtain user's authority information by access management function entity or authentication and authentication function entity;
Related above-mentioned some or all of information forms the user multicast power table.
21. a method that realizes multicast control is characterized in that, comprising:
The user initiates to add the request of multicast service to network control system;
Resource acceptance control system is checked the network control system network resource reservation based on moving speed that whether has been user applies, if the network resource reservation based on moving speed that has been user applies, then the multicast replication functional entity is transmitted corresponding group business stream to the user.
22. method as claimed in claim 21 is characterized in that, described network control system is that the step of user applies network resource reservation based on moving speed specifically comprises:
Network control system sends resource reservation request message to resource acceptance control system behind access authentication of user, carry this user's qos parameter;
Resource acceptance control system according to described user's qos parameter and its other resources allocation strategy to this user's allocation of network resources;
Resource acceptance control system is fed back to the resource information that the user distributes to network control system.
23. method as claimed in claim 22, it is characterized in that, after described resource acceptance control system is fed back to the resource information of user's distribution to network control system, if this user does not apply for adding multicast service as yet, then resource acceptance control system is after receiving that other Client-initiateds add the request of multicast service, give the user of back application with this resource allocation, but the user of this back application abdicates its shared resource when must add multicast service in the user applies of application resource reservation.
24. method as claimed in claim 22 is characterized in that, after described resource acceptance control system is fed back to the resource information of user's distribution to network control system, can not this user applies reserved resource be distributed to other users again and use.
25. method as claimed in claim 22, it is characterized in that, after described resource acceptance control system is fed back to the resource information of user's distribution to network control system, after receiving that the Client-initiated of applying for reserved resource adds the request of multicast service, inquire about this user to network control system whether this reserved resource of authority acquiring is still arranged, if this reserved resource is distributed to this CU.
26., it is characterized in that described qos parameter comprises bandwidth and type of service as any described method among the claim 22-25.
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