CN105812252A - Home gateway, system and method for accessing multicast service by terminal - Google Patents
Home gateway, system and method for accessing multicast service by terminal Download PDFInfo
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Abstract
The present invention discloses a home gateway, a system and a method for accessing a multicast service by terminal. The home gateway comprises a receiving module, a multicast to unicast module, and a sending module. The IGMP multicast media stream transmitted by a multicast special network is obtained through the receiving module. The multicast to unicast module converts the IGMP multicast media stream into unicast media stream. The sending module sends the unicast media stream to a terminal, and thus the obtainment of the unicast resource of the multicast special network by the terminal is realized. A home gateway Internet LAN interface is connected to the terminal, thus the terminal can be connected to an Internet access channel in a routing mode, and the terminal can obtain the unicast resource of the multicast special network through the common Internet access channel.
Description
Technical field
The present invention relates to the communications field, particularly to a kind of method of home gateway, system and terminal access multicast service.
Background technology
At present, OTT (OverTheTop, crosses top, refers to provide a user with various application service by the Internet) business development is swift and violent, and the multicast-capable of telecommunications network is the valuable source of telecommunications and OTT operators in co-operation or telecommunications OTT business on one's own account.But, the multicast-capable of communication network is deployed in private network (such as B plane) or designated lane, it is provided only to IPTV (InternetProtocolTelevision, interconnection protocol TV) terminal access, and OTT terminal is accessed by common Internet channel, the multicast resource of telecommunications cannot be accessed, and OTT terminal does not generally support IGMP (InternetGroupManagementProtocol, Internet Group Management Protocol) multicast protocol.
Fig. 1 illustrates the system architecture diagram of terminal access multicast private network in prior art.Home gateway 102 is respectively connected to IPTV multicast network (such as B plane) and Internet (such as A plane) based on different VLAN (VirtualLocalAreaNetwork, VLAN)；Set Top Box 101 connects home gateway dedicated lan interface (namely connecting the dedicated lan interface of multicast private network), to bridge mode, obtains multicast service by IGMP.This Set Top Box cannot access the multicast resource of telecommunications by common Internet channel.
Additionally, existing network multicast replication equipment (such as DSLAM (DigitalSubscriberLineAccessMultiplexer, digital subscriber line access multiplex)) authentication function is not provided, there is stolen risk in multicast functionality external cooperation.Such as, in Fig. 1, the multicast request of Set Top Box 101 does not have authentication flow process.
Summary of the invention
One this invention address that technical problem is that: terminal cannot obtain the multicast resource of multicast private network.
According to the first aspect of the invention, it is provided that a kind of home gateway, including: receiver module, for obtaining the IGMP multicast media stream that multicast private network sends；Multicast turns clean culture module, for the circulation of described IGMP multicast media is changed to unicast media stream；Sending module, for sending described unicast media stream to terminal.
Further, also include: business authentication proxy module, for asking from described terminal receiving multicast business certification, and described multicast service certification request is forwarded to multicast service platform, and the multicast service authority from described multicast service platform reception service-user, and described multicast service authority is forwarded to described terminal；Wherein, described multicast service platform is arranged in described multicast private network, asks according to described multicast service certification, it is thus achieved that the multicast service authority of service-user, and sends described multicast service authority to described home gateway.
Further, described multicast service certification request includes the username and password of service-user；Wherein, the described multicast service platform username and password according to described service-user, it is thus achieved that with the multicast service authority of described user name and the service-user of described password match.
Further, also include: multicast protocol proxy module, ask for receiving direct broadcast band from described terminal, the request of described direct broadcast band is converted to IGMP multicast and adds request, and initiate the addition request of described IGMP multicast to described multicast private network；Wherein, when receiving described IGMP multicast and adding request, described multicast private network issues IGMP multicast media stream to described home gateway.
Further, described multicast protocol proxy module receives live ending request from described terminal, described live ending request is converted to IGMP multicast ending request, and initiates described IGMP multicast ending request to described multicast private network；Wherein, when receiving described IGMP multicast ending request, described multicast private network stops issuing IGMP multicast media stream to described home gateway.
Further, also include: distribution network address module, be used for described terminal distribution private net address；Wherein, DHCP is initiated to obtain private net address to described home gateway during described starting up of terminal.
Further, also include: network access module, carry out network access authentication for initiating DHCP or PPPoE to described multicast private network, and receive the IP address of described multicast private network distribution from described multicast private network.
Further, described unicast media stream is real-time streaming protocol RTSP unicast media stream.
According to the second aspect of the invention, it is provided that a kind of system, including: terminal, multicast private network and described home gateway, wherein, the Internet lan interfaces of the described terminal described home gateway of connection, accesses Internet channel with routing mode.
According to the third aspect of the invention we, it is provided that a kind of method of terminal access multicast service, obtain, including: home gateway, the IGMP multicast media stream that multicast private network sends；The circulation of described IGMP multicast media is changed to unicast media stream by described home gateway；Described unicast media stream is sent to terminal by described home gateway.
Further, before home gateway obtains the IGMP multicast media stream that multicast private network sends, also include: described home gateway is asked from described terminal receiving multicast business certification, and described multicast service certification request is forwarded to multicast service platform, and the multicast service authority from described multicast service platform reception service-user, and described multicast service authority is forwarded to described terminal；Wherein, described multicast service platform is arranged in described multicast private network, asks according to described multicast service certification, it is thus achieved that the multicast service authority of service-user, and sends described multicast service authority to described home gateway.
Further, described multicast service certification request includes the username and password of service-user；Wherein, the described multicast service platform username and password according to described service-user, it is thus achieved that with the multicast service authority of described user name and the service-user of described password match.
Further, before home gateway obtains the IGMP multicast media stream that multicast private network sends, also include: described home gateway receives direct broadcast band request from described terminal, the request of described direct broadcast band is converted to IGMP multicast and adds request, and initiate the addition request of described IGMP multicast to described multicast private network；Wherein, when receiving described IGMP multicast and adding request, described multicast private network issues IGMP multicast media stream to described home gateway.
Further, also include: described home gateway receives live ending request from described terminal, described live ending request is converted to IGMP multicast ending request, and initiates described IGMP multicast ending request to described multicast private network；Wherein, when receiving described IGMP multicast ending request, described multicast private network stops issuing IGMP multicast media stream to described home gateway.
Further, before described home gateway is asked from described terminal receiving multicast business certification, also include: described home gateway is to described terminal distribution private net address；Wherein, DHCP is initiated to obtain private net address to described home gateway during described starting up of terminal.
Further, before described home gateway is asked from described terminal receiving multicast business certification, also include: described home gateway is initiated DHCP or PPPoE to described multicast private network and carried out network access authentication, and receives the IP address of described multicast private network distribution from described multicast private network.
Further, described unicast media stream is real-time streaming protocol RTSP unicast media stream.
In the present invention, by home gateway, the IGMP multicast media received from multicast private network circulation is changed to unicast media stream, and this unicast media stream is sent to terminal, it is achieved thereby that terminal obtains the purpose of the multicast resource of multicast private network.
By referring to the accompanying drawing detailed description to the exemplary embodiment of the present invention, the further feature of the present invention and advantage thereof will be made apparent from.
Accompanying drawing explanation
The accompanying drawing of the part constituting description describes embodiments of the invention, and is used for together with the description explaining principles of the invention.
With reference to accompanying drawing, according to detailed description below, it is possible to be more clearly understood from the present invention, wherein:
Fig. 1 illustrates the system architecture diagram of terminal access multicast private network in prior art.
Fig. 2 is the structure chart illustrating home gateway according to some embodiments of the invention.
Fig. 3 is the structure chart illustrating the home gateway according to other embodiments of the present invention.
Fig. 4 is the Organization Chart illustrating a system according to some embodiments of the invention.
Fig. 5 is the flow chart of the method illustrating terminal access multicast service according to some embodiments of the invention.
Fig. 6 is the flow chart of the method illustrating the terminal access multicast service according to other embodiments of the present invention.
Detailed description of the invention
The various exemplary embodiments of the present invention are described in detail now with reference to accompanying drawing.It should also be noted that unless specifically stated otherwise, the parts otherwise set forth in these embodiments and positioned opposite, the numerical expression of step and numerical value do not limit the scope of the invention.
Simultaneously, it should be appreciated that for the ease of describing, the size of the various piece shown in accompanying drawing is not draw according to actual proportionate relationship.
Description only actually at least one exemplary embodiment is illustrative below, never as any restriction to the present invention and application or use.
The known technology of person of ordinary skill in the relevant, method and apparatus are likely to be not discussed in detail, but in the appropriate case, described technology, method and apparatus should be considered to authorize a part for description.
Shown here with in all examples discussed, any occurrence should be construed as merely exemplary, not as restriction.Therefore, other example of exemplary embodiment can have different values.
It should also be noted that similar label and letter below figure represent similar terms, therefore, once a certain Xiang Yi accompanying drawing is defined, then it need not be further discussed in accompanying drawing subsequently.
Fig. 2 is the structure chart illustrating home gateway according to some embodiments of the invention.As in figure 2 it is shown, home gateway 20 includes: receiver module 201, multicast turn clean culture module 202 and sending module 203, wherein,
Receiver module 201 is for obtaining the IGMP multicast media stream that multicast private network sends.
Multicast turns clean culture module 202 for the circulation of IGMP multicast media is changed to unicast media stream (such as, RTSP (RealTimeStreamingProtocol, real-time streaming protocol) unicast media stream).
Sending module 203 is for sending unicast media stream to terminal (such as Set Top Box, computer, panel computer etc.).
In this embodiment, home gateway is by being changed to unicast media stream by the IGMP multicast media received from multicast private network (network element such as multicast private network) circulation, and send the unicast media stream after conversion to terminal, it is achieved thereby that terminal obtains the purpose of the multicast resource of multicast private network.
In another embodiment, home gateway InternetLAN interface (such as also supporting that family WiFi accesses) is connected with terminal, make terminal can access Internet channel with routing mode, it is achieved thereby that terminal obtains the multicast resource of multicast private network by common Internet channel.
In an embodiment of the present invention, multicast turns clean culture module can change the multicast encapsulation of the multicast media stream of acquisition into clean culture encapsulation, such as multicast ip address is changed into clean culture IP (InternetProtocol, procotol) address, and by multicast RTP (Real-timeTransportProtocol, RTP) agreement changes clean culture Real-time Transport Protocol into, thus the circulation of IGMP multicast media is changed to unicast media stream by realization.
In an embodiment of the present invention, home gateway also includes: business authentication proxy module, for asking from terminal receiving multicast business certification, and this multicast service certification request is forwarded to multicast service platform, and the multicast service authority from this multicast service platform reception service-user, and multicast service authority is forwarded to terminal；Wherein, multicast service platform is arranged in multicast private network, asks according to multicast service certification, it is thus achieved that the multicast service authority of service-user, and sends this multicast service authority to home gateway.In this embodiment, ask to be forwarded to multicast service platform by the multicast service certification of terminal by business authentication proxy module, and the multicast service authority of the service-user received from multicast service platform is forwarded to terminal, it is achieved thereby that authentication function, it is prevented that multicast resource is stolen.
In an embodiment of the present invention, multicast service certification request includes the username and password of service-user；Wherein, the multicast service platform username and password according to service-user, it is thus achieved that with the multicast service authority of this user name and the service-user of this password match.In another embodiment, before service-user is authenticated by home gateway, service-user needs to carry out the registration of multicast service, it is thus achieved that username and password.
In an embodiment of the present invention, multicast service authority includes the authorization message etc. of service-user.
In an embodiment of the present invention, home gateway also includes: multicast protocol proxy module, for receiving direct broadcast band request (such as the request of RTSP direct broadcast band) from terminal, the request of this direct broadcast band is converted to IGMP multicast and adds request, and initiate the addition request of this IGMP multicast to multicast private network；Wherein, when receiving IGMP multicast and adding request, multicast private network issues IGMP multicast media stream to home gateway.In this embodiment, by multicast protocol proxy module, the direct broadcast band of terminal is asked to be converted to IGMP multicast addition request Concurrency and deliver to multicast private network, it is achieved thereby that terminal asks to access multicast private network to obtain multicast resource by home gateway.
In another embodiment, multicast protocol proxy module receives live ending request (the live ending request of such as RTSP) from terminal, this live ending request is converted to IGMP multicast ending request, and initiates this IGMP multicast ending request to multicast private network；Wherein, when receiving IGMP multicast ending request, multicast private network stops issuing IGMP multicast media stream to home gateway.In this embodiment, by multicast protocol proxy module, the live ending request of terminal is converted to IGMP multicast ending request transmission to multicast private network, it is achieved thereby that terminal terminates to access multicast private network by home gateway.
In an embodiment of the present invention, home gateway also includes: distribution network address module, is used for terminal distribution private net address；Wherein, DHCP (DynamicHostConfigurationProtocol, DHCP) is initiated to obtain private net address to described home gateway during starting up of terminal.In this embodiment, by distributing network address module to terminal distribution private net address so that set up network between home gateway with terminal and be connected.
Such as, terminal sends DHCPDISCOVER broadcast packet when start and finds Dynamic Host Configuration Protocol server on family's private network, and the distribution network address module of home gateway is Dynamic Host Configuration Protocol server；This distribution network address module sends DHCPOFFER broadcast data packet to present networks, comprises IP address and address lease etc.；Terminal sends DHCPREQUEST broadcast packet, formally distributes, to distribution network address module request, the IP address having been provided that；This distribution network address module sends DHCPACK unicast packet to terminal, confirms the request of terminal, thus realizing to terminal distribution private net address.
In an embodiment of the present invention, home gateway also includes: network access module, for initiating DHCP or PPPoE (PointtoPointProtocoloverEthernet to multicast private network, point-to-point protocol on Ethernet) carry out network access authentication, and the IP address of this multicast private network distribution is received from multicast private network.In this embodiment, initiate DHCP or PPPoE by network access module to multicast private network and carry out network access authentication, be connected it is achieved thereby that set up network between home gateway with multicast private network.Wherein, utilizing DHCP protocol to carry out network access authentication and can not need the username and password of the network user, utilizing PPPoE agreement to carry out network access authentication then needs the username and password of the network user.
Such as, network access module is included by the process of the DHCP IP address obtaining the distribution of multicast private network: after home gateway start, network access module sends DHCPDISCOVER broadcast packet and finds Dynamic Host Configuration Protocol server on multicast private network；Dynamic Host Configuration Protocol server on multicast private network sends DHCPOFFER broadcast data packet to this multicast private network, comprises IP address and address lease etc.；Network access module sends DHCPREQUEST broadcast packet, the IP address formally having been provided that to Dynamic Host Configuration Protocol server request distribution；Dynamic Host Configuration Protocol server sends DHCPACK unicast packet to network access module, confirms the request of network access module, thus realizing home gateway to obtain the IP address of multicast private network distribution.
Again such as, network access module is included by the process of the PPPoE IP address obtaining the distribution of multicast private network:
(1) network access module of home gateway is to the AC (AccessConcentrator on multicast private network, LAC) equipment one PADI (PPPoEActiveDiscoveryInitiation of transmission, PPPoE is actively discovered initial bag) message, start the PPPoE beginning accessed.
(2) AC equipment sends PADO (PPPoEActiveDiscoveryOffer, PPPoE are actively discovered proposal bag) message to network access module.
(3) network access module is according to response, initiates PADR (PPPoEActiveDiscoveryRequest, PPPoE active discovery request bag) and asks to AC equipment.
(4) AC equipment produces a sessionid, issues network access module by PADS (PPPoEActiveDiscoverySession-confirmation, PPPoE are actively discovered session and confirm bag).
(5) LCP (LinkControlProtocol of PPP is carried out between network access module and AC equipment, LCP) consult, set up link layer communications, negotiation can use PAP (PasswordAuthenticationProtocol, password authentication protocol), CHAP (ChallengeHandshakeAuthenticationProtocol, inquire Challenge-Handshake Authentication Protocol) authentication mode.
(6) AC equipment is sent to network access module by Challenge message, it is provided that the Challenge of a 128bit.
(7) after network access module receives Challenge (inquiry) message, password and Challenge are MD5 (Message-DigestAlgorithm5, message digest algorithm 5) Challenge Password (inquiry-password) after algorithm, it is sent to AC equipment by Response back message.
(8) user name of Challenge, challenge-Password and the network user is sent to RADIUS (RemoteAuthenticationDialInUserService by AC equipment, remote customer dialing authentication services) subscriber authentication server, radius user's certificate server it is authenticated.
(9) according to user profile, radius user's certificate server judges that whether user is legal, then responds certification success or failure message to AC equipment.If it is successful, carry negotiation parameter, and the related service attribute of the network user authorizes to the network user.If authentification failure, then flow process leaves it at that.
(10) authentication result is returned to network access module by AC equipment.
(11) network user carries out NCP (NetworkControlProtocol, Network Control Protocol) (such as IPCP, i.e. IPControlProtocol, IP control protocol) consult, the parameter such as IP address of planning is got by AC equipment.
(12) certification is if it is successful, AC equipment initiates accounting start request to radius user's certificate server.
(13) radius user's certificate server responds charging starting request message.Network user's access authentication is complete.
Fig. 3 is the structure chart illustrating the home gateway according to other embodiments of the present invention.As it can be seen, home gateway 30 includes: AM access module 301, multicast turn clean culture module 302, sending module 303, multicast protocol proxy module 304, business authentication proxy module 305, distribution network address module 305 and network access module 307.About the description of these modules with above similar, repeat no more here.
In this embodiment, by arranging above-mentioned module in home gateway, it is achieved thereby that socialization's terminal (such as Set Top Box, handheld terminal etc.) accesses the programme televised live based on multicast private network, solve socialization's terminal to access multicast private network and not there is the problem of IGMP multicast protocol, also solve the problem that existing network multicast does not have authentication.
Fig. 4 is the Organization Chart illustrating a system according to some embodiments of the invention.As shown in Figure 4, described system includes: terminal 41 (such as Set Top Box, handheld terminal etc.), multicast private network 43 and home gateway 42.For illustrative purposes, Fig. 4 also show the Internet 44 (internet).
Wherein, terminal 41 connects the Internet lan interfaces (InternetLAN interface) of home gateway 42, accesses Internet channel with routing mode.
In this embodiment, terminal connects home gateway InternetLAN interface (such as also supporting that family WiFi accesses), accesses Internet channel with routing mode, obtains in-home address；Home gateway, after the live broadcast service receiving terminal is asked, initiates multicast request to network, and after transferring multicast to clean culture, issues terminal by the mode routeing, it is achieved thereby that terminal is by the multicast resource of common Internet channel acquisition multicast private network.
Fig. 5 is the flow chart of the method illustrating terminal access multicast service according to some embodiments of the invention.
In step S501, home gateway obtains the IGMP multicast media stream that multicast private network sends.
In step S502, the circulation of IGMP multicast media is changed to unicast media stream by home gateway.This unicast media stream is such as RTSP unicast media stream.
In step S503, unicast media stream is sent to terminal by home gateway.
In this embodiment, home gateway is by being changed to unicast media stream by the IGMP multicast media received from multicast private network (network element such as multicast private network) circulation, and send the unicast media stream after conversion to terminal, it is achieved thereby that terminal obtains the purpose of the multicast resource of multicast private network.
In another embodiment, home gateway InternetLAN interface (such as also supporting that family WiFi accesses) is connected with terminal, make terminal can access Internet channel with routing mode, it is achieved thereby that terminal obtains the multicast resource of multicast private network by common Internet channel.
In an embodiment of the present invention, before home gateway obtains the IGMP multicast media stream that multicast private network sends, the method of terminal access multicast service also includes: home gateway is asked from terminal receiving multicast business certification, and this multicast service certification request is forwarded to multicast service platform, and the multicast service authority from multicast service platform reception service-user, and this multicast service authority is forwarded to terminal；Wherein, multicast service platform is arranged in multicast private network, asks according to multicast service certification, it is thus achieved that the multicast service authority of service-user, and sends multicast service authority to home gateway.In this embodiment, ask to be forwarded to multicast service platform by the multicast service certification of terminal by home gateway, and the multicast service authority of the service-user received from multicast service platform is forwarded to terminal, it is achieved thereby that authentication function, it is prevented that multicast resource is stolen.
In an embodiment of the present invention, multicast service certification request includes the username and password of service-user；Wherein, the multicast service platform username and password according to service-user, it is thus achieved that with the multicast service authority of this user name and the service-user of this password match.In another embodiment, before service-user is authenticated by home gateway, service-user needs to carry out the registration of multicast service, it is thus achieved that username and password.
In an embodiment of the present invention, multicast service authority includes the authorization message etc. of service-user.
In an embodiment of the present invention, before home gateway obtains the IGMP multicast media stream that multicast private network sends, the method of terminal access multicast service also includes: home gateway receives direct broadcast band request (such as the request of RTSP direct broadcast band) from terminal, the request of this direct broadcast band is converted to IGMP multicast and adds request, and initiate the addition request of this IGMP multicast to multicast private network；Wherein, when receiving IGMP multicast and adding request, multicast private network issues IGMP multicast media stream to home gateway.In this embodiment, by home gateway, the direct broadcast band of terminal is asked to be converted to IGMP multicast addition request Concurrency and deliver to multicast private network, it is achieved thereby that terminal asks to access multicast private network to obtain multicast resource by home gateway.
In another embodiment, the method of terminal access multicast service also includes: home gateway receives live ending request (the live ending request of such as RTSP) from terminal, this live ending request is converted to IGMP multicast ending request, and initiates this IGMP multicast ending request to multicast private network；Wherein, when receiving IGMP multicast ending request, multicast private network stops issuing IGMP multicast media stream to home gateway.In this embodiment, by home gateway, the live ending request of terminal is converted to IGMP multicast ending request transmission to multicast private network, it is achieved thereby that terminal terminates to access multicast private network by home gateway.
In an embodiment of the present invention, before home gateway is asked from terminal receiving multicast business certification, the method for terminal access multicast service also includes: home gateway is to terminal distribution private net address；Wherein, DHCP is initiated to obtain private net address to home gateway during starting up of terminal.About the home gateway process to terminal distribution private net address, before describe in detail, repeat no more here.In this embodiment, by home gateway to terminal distribution private net address so that set up network between home gateway with terminal and be connected.
In an embodiment of the present invention, before home gateway is asked from terminal receiving multicast business certification, the method of terminal access multicast service also includes: home gateway is initiated DHCP or PPPoE to multicast private network and carried out network access authentication, and receives the IP address of multicast private network distribution from multicast private network.Initiate DHCP or PPPoE about home gateway to multicast private network and carry out the process of network access authentication, before have been described in, repeat no more here.In this embodiment, initiate DHCP or PPPoE by home gateway to multicast private network and carry out network access authentication, be connected it is achieved thereby that set up network between home gateway with multicast private network.Wherein, utilizing DHCP protocol to carry out network access authentication and can not need the username and password of the network user, utilizing PPPoE agreement to carry out network access authentication then needs the username and password of the network user.
Fig. 6 is the flow chart of the method illustrating the terminal access multicast service according to other embodiments of the present invention.
In step S601, home gateway carries out the network access authentication of multicast private network.Such as, initiate DHCP or PPPoE to multicast private network during home gateway start and carry out network access authentication, obtain the IP address of multicast private network distribution.
In step S602, terminal obtains the private net address of home gateway distribution.Such as, initiate DHCP to home gateway during starting up of terminal and obtain private net address.
In step S603, terminal sends multicast service certification request to home gateway.
In step S604, home gateway is asked to multicast service platform forwarding multicasting business authentication, and obtains the multicast service authority of service-user from multicast service platform.
In step S605, home gateway is to terminal forwarding multicasting service authority.
In step S606, terminal sends the request of RTSP direct broadcast band to home gateway.
In step S607, the request of RTSP direct broadcast band is converted to IGMP multicast addition request Concurrency and delivers to multicast private network by home gateway.
In step S608, multicast private network issues IGMP multicast media stream to home gateway.
In step S609, the circulation of IGMP multicast media is changed to RTSP unicast media stream by home gateway.
In step S610, home gateway issues RTSP unicast media stream to terminal.
In step S611, terminal sends the live ending request of RTSP to home gateway.
In step S612, live for RTSP ending request is converted to IGMP multicast ending request and sends to multicast private network by home gateway.
In step S613, multicast private network stops issuing IGMP multicast media stream to home gateway.
In this embodiment, the multicast that multicast private network carries is converted to clean culture by Internet channel by home gateway, and the method that Operational Visit authentication is provided, realization of socialization terminal is to the access of telecommunications multicast-capable and management and control, the method is applicable to telecommunications network multicast-capable and opens to OTT operator, is simultaneously applicable to the live broadcast service of OTT on one's own account.
So far, the present invention is described in detail.In order to avoid covering the design of the present invention, it does not have describe details more known in the field.Those skilled in the art are as described above, complete it can be appreciated how implement technical scheme disclosed herein.
It is likely to be achieved in many ways the method and system of the present invention.Such as, can by software, hardware, firmware or software, hardware, firmware any combination realize the method and system of the present invention.For the said sequence of step of described method merely to illustrate, the step of the method for the present invention is not limited to order described in detail above, unless specifically stated otherwise.Additionally, in certain embodiments, can being also record program in the recording medium by the invention process, these programs include the machine readable instructions for realizing the method according to the invention.Thus, the present invention also covers the record medium of the storage program for performing the method according to the invention.
Although some specific embodiments of the present invention being described in detail already by example, but it should be appreciated by those skilled in the art, above example is merely to illustrate, rather than in order to limit the scope of the present invention.It should be appreciated by those skilled in the art, can without departing from the scope and spirit of the present invention, above example be modified.The scope of the present invention be defined by the appended claims.
Claims (17)
1. a home gateway, it is characterised in that including:
Receiver module, for obtaining the Internet Group Management Protocol IGMP multicast media stream that multicast private network sends；
Multicast turns clean culture module, for the circulation of described IGMP multicast media is changed to unicast media stream；
Sending module, for sending described unicast media stream to terminal.
2. home gateway according to claim 1, it is characterised in that also include:
Business authentication proxy module, for asking from described terminal receiving multicast business certification, and described multicast service certification request is forwarded to multicast service platform and the multicast service authority from described multicast service platform reception service-user, and described multicast service authority is forwarded to described terminal；
Wherein, described multicast service platform is arranged in described multicast private network, asks according to described multicast service certification, it is thus achieved that the multicast service authority of service-user, and sends described multicast service authority to described home gateway.
3. home gateway according to claim 2, it is characterised in that
Described multicast service certification request includes the username and password of service-user；
Wherein, the described multicast service platform username and password according to described service-user, it is thus achieved that with the multicast service authority of described user name and the service-user of described password match.
4. home gateway according to claim 1, it is characterised in that also include:
Multicast protocol proxy module, asks for receiving direct broadcast band from described terminal, the request of described direct broadcast band is converted to IGMP multicast and adds request, and initiate the addition request of described IGMP multicast to described multicast private network；
Wherein, when receiving described IGMP multicast and adding request, described multicast private network issues IGMP multicast media stream to described home gateway.
5. home gateway according to claim 4, it is characterised in that
Described multicast protocol proxy module receives live ending request from described terminal, described live ending request is converted to IGMP multicast ending request, and initiates described IGMP multicast ending request to described multicast private network；
Wherein, when receiving described IGMP multicast ending request, described multicast private network stops issuing IGMP multicast media stream to described home gateway.
6. home gateway according to claim 1, it is characterised in that also include:
Distribution network address module, is used for described terminal distribution private net address；
Wherein, dynamic host configuration protocol DHCP is initiated to obtain private net address to described home gateway during described starting up of terminal.
7. home gateway according to claim 1, it is characterised in that also include:
Network access module, carries out network access authentication for the point-to-point protocol PPPoE initiated on DHCP or Ethernet to described multicast private network, and receives the IP address of described multicast private network distribution from described multicast private network.
8. home gateway according to claim 1, it is characterised in that described unicast media stream is real-time streaming protocol RTSP unicast media stream.
9. a system, it is characterised in that including:
Terminal, multicast private network and as arbitrary in claim 1 to 8 as described in home gateway,
Wherein, described terminal connects the Internet lan interfaces of described home gateway, accesses Internet channel with routing mode.
10. the method for a terminal access multicast service, it is characterised in that including:
Home gateway obtains the Internet Group Management Protocol IGMP multicast media stream that multicast private network sends；
The circulation of described IGMP multicast media is changed to unicast media stream by described home gateway；
Described unicast media stream is sent to terminal by described home gateway.
11. the method for terminal access multicast service according to claim 10, it is characterised in that
Before home gateway obtains the IGMP multicast media stream that multicast private network sends, also include:
Described home gateway is asked from described terminal receiving multicast business certification, and described multicast service certification request is forwarded to multicast service platform, and the multicast service authority from described multicast service platform reception service-user, and described multicast service authority is forwarded to described terminal；
Wherein, described multicast service platform is arranged in described multicast private network, asks according to described multicast service certification, it is thus achieved that the multicast service authority of service-user, and sends described multicast service authority to described home gateway.
12. the method for terminal access multicast service according to claim 11, it is characterised in that
Described multicast service certification request includes the username and password of service-user；
Wherein, the described multicast service platform username and password according to described service-user, it is thus achieved that with the multicast service authority of described user name and the service-user of described password match.
13. the method for terminal access multicast service according to claim 10, it is characterised in that
Before home gateway obtains the IGMP multicast media stream that multicast private network sends, also include:
Described home gateway receives direct broadcast band from described terminal and asks, and the request of described direct broadcast band is converted to IGMP multicast and adds request, and initiate the addition request of described IGMP multicast to described multicast private network；
Wherein, when receiving described IGMP multicast and adding request, described multicast private network issues IGMP multicast media stream to described home gateway.
14. the method for terminal access multicast service according to claim 13, it is characterised in that also include:
Described home gateway receives live ending request from described terminal, described live ending request is converted to IGMP multicast ending request, and initiates described IGMP multicast ending request to described multicast private network；
Wherein, when receiving described IGMP multicast ending request, described multicast private network stops issuing IGMP multicast media stream to described home gateway.
15. the method for terminal access multicast service according to claim 10, it is characterised in that
Before described home gateway is asked from described terminal receiving multicast business certification, also include:
Described home gateway is to described terminal distribution private net address；
Wherein, dynamic host configuration protocol DHCP is initiated to obtain private net address to described home gateway during described starting up of terminal.
16. the method for terminal access multicast service according to claim 15, it is characterised in that
Before described home gateway is asked from described terminal receiving multicast business certification, also include:
To described multicast private network, the point-to-point protocol PPPoE initiated on DHCP or Ethernet carries out network access authentication to described home gateway, and receives the IP address of described multicast private network distribution from described multicast private network.
17. the method for terminal access multicast service according to claim 10, it is characterised in that described unicast media stream is real-time streaming protocol RTSP unicast media stream.
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