CN100438499C - Group broadcast program repeating processing method and connecting device for multicast repeat - Google Patents
Group broadcast program repeating processing method and connecting device for multicast repeat Download PDFInfo
- Publication number
- CN100438499C CN100438499C CNB2005100345224A CN200510034522A CN100438499C CN 100438499 C CN100438499 C CN 100438499C CN B2005100345224 A CNB2005100345224 A CN B2005100345224A CN 200510034522 A CN200510034522 A CN 200510034522A CN 100438499 C CN100438499 C CN 100438499C
- Authority
- CN
- China
- Prior art keywords
- multicast
- multicast channel
- channel
- user terminal
- address
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Data Exchanges In Wide-Area Networks (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The present invention relates to a forwarding processing method for multicast programs and an access device for multicast forwarding. When a user terminal applies to join a multicast channel, the access device selects a replacement multicast channel and adds the user terminal into a multicast member list of the replacement multicast channel in a multicast forwarding table, and an address conversion relation between the applied multicast channel and the replacement multicast channel is established. After multicast messages of the replacement multicast channel enter the assess device through a network side port, the access device forwards the multicast messages according to the multicast forwarding table and converts the address of the replacement multicast channel into the address of the applied multicast channel according to the address conversion relation, wherein the address of the replacement multicast channel is sent out to the user terminal, and the multicast messages of the replacement multicast channel are sent to the user terminal. The present invention overcomes the detect that the phenomenon that the user terminal generates a blank screen is caused when a program-order request of a user in the prior art can not be met and the user is directly refused. The method is friendly to the user and can not cause user complaints.
Description
Technical field
The present invention relates to the Internet video technical field of multicast, be specifically related to a kind of method for processing forwarding of group broadcasting program and carry out the access device of multicast forwarding, as digital subscriber line access multiplex (DSLAM).
Background technology
The group broadcasting video frequency network comprises video headend shall system, IP metropolitan area network, Access Network and four composition portions of home network, be illustrated in figure 1 as prior art group broadcasting video frequency schematic network structure, the video headend shall system realizes video user management, CA/DRM, video coding function, then video traffic is sent into the IP metropolitan area network, each TV and broadcasting channel adopt the MPEG-2 form to be encoded into one road code stream and are encapsulated in the UDP/IP message.The IP metropolitan area network is delivered to broadband access network by the IP multicast functionality with video traffic.Access Network realizes that the video group adds, leaves controlled function, and the video flowing that the user is needed sends to the user.Access Network can comprise Layer 2 switch (being SW, can be ATM switch or Ethernet switch) and DSLAM (digital subscriber line access multiplex) equipment, is connected with adopting physical circuits such as FE or xDSL between the user.Video flowing sends to multicast router or access devices such as Layer 2 switch or DSLAM from the IP metropolitan area network, video flowing is sent to the user of needs according to user's IGMP (IGMP) control message.
Present PC or STB (set-top box) on-demand multicasting program, the general multicast protocol that adopts IGMP agreement (V1, V2 or V3), the IGMP agreement is a kind of agreement that is carried on the IP agreement, arranged side by side with the IP agreement in fact, defined two entities of client and multicast router on agreement, the corresponding group broadcasting video frequency network of these two entities is exactly video terminal and access device, and protocol format as shown in Figure 2, when the protocol number in the IP protocol header was 2, the data that show the back were IGMP protocol massages.The form of IGMP data message as shown in Figure 3, wherein:
4bit Version is the version number that is represented by 4bit, is followed successively by v1, v2, v3 (version 1,2,3);
4bit Type is the type of message of being represented by 4bit, represents which type of control message this message is, is example with IGMP v2, and following several message is arranged:
1) 0x11=Membership Query, query message, multicast router is used to inquire about whether whether multicast group has the user to exist; Whether general timed sending also can send inquiry after receiving the leave that the user sends (leaving) message, also have the user to exist to understand this group.
2) 0x16=Version 2Membership Report, member's report message shows to add certain multicast group or response group polling message.
3) 0x17=Leave Group, leave message shows and leaves certain group.
4) 0x12=Version 1Membership Report, member's report message of IGMP v1 is used as adding or responding.
The verification of 16bit and; Thereafter the type of message that is multicast address and 4bit is used.
On access device (as Digital Subscriber Line Access Multiplexer DSLAM), disposed different multicast authority based on port, the user can only visit the multicast content in the own permissions list, if the visit other guide can be rejected, terminal can't accept any content.The prior art video frequency program issues schematic diagram as shown in Figure 4, if user 1 permissions list is G1/G2/G3, promptly user 1 can only the user watches the program of G1 channel, G2 channel, G3 channel; If user 2 permissions list is G1/G5/G8, promptly user 2 can only watch the program of G1 channel, G5 channel, G8 channel.
Be illustrated in figure 5 as the module diagram of prior art access device processing multicast service, DSLAM multicast processing module configuration multicast forward table, when network-side port arrived, the multicast replication module copied to user port according to multicast forward table with network multicast stream at network multicast stream.
In the prior art, the control method of user multicast video authority is after multicast that access device receives the user joins request, if find that the user does not have authority, then can not issue any group broadcasting program stream, blank screen will appear in user's video terminal like this, it is any problem that the user can't feel, and experiences non-constant.Secondly in dynamic bandwidth control, bandwidth application on certain access device has surpassed the downlink bandwidth of broadband access equipment, if the request according to the user increases the program application again, will make all program video packet loss at random occur, the program that makes all users watch is affected.The way that may take is exactly the request of simple refusing user's at present, and at this time blank screen will appear in user's video terminal, because this is because the user that authority is arranged that network congestion causes can't watch video frequency program, can cause user's complaint.
Summary of the invention
Technical problem to be solved by this invention provides a kind of method for processing forwarding of group broadcasting program and carries out the access device of multicast forwarding, when Internet resources or user right can't satisfy user's video multicasting request, avoid user terminal the blank screen phenomenon to occur.
The present invention solves the problems of the technologies described above the technical scheme that is adopted to be:
The method for processing forwarding of this group broadcasting program may further comprise the steps:
A, when the user terminal application adds a certain multicast channel, if this user does not have authority or system resource to be not enough to support, the selected replacement multicast channel that differs from the multicast channel of applying for of access device, this user terminal is joined in the multicast member tabulation of this replacement multicast channel in the multicast forward table, and set up the address transition relation of application multicast channel and described replacement multicast channel;
B, after the multicast message of described replacement multicast channel enters access device from network-side port, access device is transmitted according to multicast forward table, and be the address of the multicast channel applied for according to the replacement multicast channel address transition that the address transition set up relation will mail to this user terminal, the multicast message that will replace multicast channel again sends to this user terminal.
In the described steps A, employing is provided with multicast failure Policy Table in access device, the content of this table comprises that the user terminal application adds reason and the pairing replacement multicast channel of different reasons that the request of a certain multicast channel can't be satisfied, and access device is according to the selected described replacement multicast channel of this multicast failure Policy Table.
Described replacement multicast channel can be by static multicast channel that adds of access device or the multicast channel of dynamically being applied for from network by access device.When described multicast failure Policy Table is configured, can specify a fixedly multicast channel that differs from the multicast channel of applying for multicast channel as an alternative, or corresponding respectively different reason is specified the different multicast channels multicast channel as an alternative that differs from the multicast channel of applying for.The content of described replacement multicast channel can be advertisement, free video or failure cause prompting.Also can when being configured, described multicast failure Policy Table select multicast channel multicast channel as an alternative the multicast channel that plays to user terminal at random or in sequence from having now to have existed.
In the described steps A, the multicast address conversion table can be set in access device, the content of this table comprises whether the multicast channel address of mailing to certain user terminal needs to change, the multicast channel address of needs conversion and the multicast channel address after the conversion, and access device is set up described address transition relation according to this multicast address conversion table.
Corresponding a kind of access device that carries out multicast forwarding comprises the multicast replication module, and this multicast replication module is duplicated forwarding according to multicast forward table to network multicast stream, also is provided with in the described access device:
The abnormality processing control module, be used for when the user terminal application adds a certain multicast channel, if this user does not have authority or system resource to be not enough to support, search this user terminal corresponding strategy, the selected replacement multicast channel that differs from the multicast channel of applying for, this user terminal is joined in the multicast member tabulation of this replacement multicast channel in the multicast forward table, and set up the address transition relation of application multicast channel and described replacement multicast channel;
The multicast address modular converter, be used for after the multicast replication module is carried out multicast forwarding according to multicast forward table, the replacement multicast channel address transition that will mail to user terminal according to the address transition set up relation is the address of the multicast channel applied for, and the multicast message that will replace multicast channel sends to user terminal.
Beneficial effect of the present invention is: the invention provides a kind of method for processing forwarding of group broadcasting program and carry out the access device of multicast forwarding, when Internet resources or user right can't satisfy user's video multicasting request, initiatively switch to by the predefined multicast channel of access device, to the instruction manual reason or free program is provided, overcome the prior art directly request of refusing user's at this moment, the shortcoming that causes user terminal blank screen phenomenon, to user friendly, can not cause customer complaint.
Description of drawings
Fig. 1 is a prior art group broadcasting video frequency schematic network structure;
Fig. 2 is a prior art IGMP protocol format schematic diagram;
Fig. 3 is a prior art IGMP data message form schematic diagram;
Fig. 4 is that the prior art video frequency program issues schematic diagram;
Fig. 5 is the module diagram of prior art access device processing multicast service;
Fig. 6 is the modular structure schematic diagram of access device processing multicast service of the present invention;
Fig. 7 is an abnormality processing control flow chart of the present invention;
Fig. 8 is the multicast message process chart that the present invention replaces multicast channel.
Embodiment
With embodiment the present invention is described in further detail with reference to the accompanying drawings below:
(with DSLAM equipment is example at access device in the present invention, also can be multicast router, Layer 2 switch etc.) on increased extra processing capacity, thereby when Internet resources or user right do not allow the user to watch the program of being asked, send the content of appointment to user.This processing capacity needs multicast of DSLAM equipment disposition failure Policy Table, and the content of this table comprises the replacement multicast channel (can also comprise the attribute of channel etc.) of reason group and different reason group correspondences, one of can be in the following manner be configured:
1) specifies fixing multicast channel multicast channel as an alternative, as Group0;
2) corresponding different reasons are specified different multicast channels multicast channel as an alternative, and the content of these channels can be advertisement, perhaps free video or failure cause prompting.
3) also can adopt existing existed in the multicast channel that plays to user terminal at random or in sequence (as in chronological order) select channel multicast channel as an alternative.
The replacement multicast channel can (this DSLAM be the static member of multicast network by the static adding of DSLAM equipment, need between DSLAM equipment and network, not move multicast protocol like this), at this moment replace the program of multicast channel will be always from multicast replication on the backbone network to DSLAM equipment; Also can dynamically add after following processing and replace multicast channel, the program of replacing multicast channel like this just can be dynamically sends from network according to the application of DSLAM, thus the bandwidth of saving network side interface.
As shown in Figure 6, in the original video distribution system of DSLAM equipment, need to increase following form and processing module:
1) multicast failure Policy Table, the content of this table comprises the replacement multicast channel of reason group and different reason group correspondences, disposed strategy corresponding to certain user or certain group user multicast application failure, for example whether this user is joined the replacement multicast channel, replace multicast channel if which then joins, perhaps those replace multicast channel, if a plurality of replacement multicast channel, selection strategy be what or the like (, when having authority, need not add Group0 such as having disposed User1; Need add Group100 in the time of the Internet resources deficiency);
2) multicast address conversion table, because the multicast channel of user terminal application can't satisfy, if will not replace the address transition of multicast channel is the multicast channel address of being applied for, then the user can't receive the multicast traffic stream of replacing multicast channel, therefore need carry out the multicast address conversion.The content of this conversion table is whether the multicast ip address/MAC Address of certain port needs conversion, needs the multicast ip address/MAC Address after the multicast ip address/MAC Address changed and the conversion simultaneously, and the multicast address that is used for multicast traffic stream switches;
3) multicast address forwarding module, after the multicast replication module is carried out multicast forwarding according to multicast forward table, the replacement multicast channel address that to mail to user terminal according to the multicast address conversion table replaces with the address of the multicast channel of being applied for, and the multicast message that will replace multicast channel sends to user terminal.
4) abnormality processing control module, the request that the user terminal application adds a certain multicast channel is used for when can't be satisfied, search the failure strategy of this user terminal correspondence, the selected replacement multicast channel that differs from the multicast channel of applying for, this user terminal is joined in the multicast member tabulation of this replacement multicast channel in the multicast forward table, and set up the address transition relation of application multicast channel and described replacement multicast channel.
This module can be an independent module, it also can be a branch of the original normal multicast processing module of DSLAM, multicast request (for example the User1 request adds Group5) when the DSLAM process user, after finding that this user does not have authority or system resource to be not enough to support, handle by this module, treatment step as shown in Figure 7:
1, searches the corresponding multicast failure Policy Table of this user (User1), judge whether this user needs to join other multicast channel;
If not corresponding strategy does not then need extra process in the 2 multicasts failure Policy Table, flow process finishes; If corresponding strategy is arranged, then enter next step;
If in the 3 multicasts failure Policy Table corresponding strategy is arranged, need change adding Group0 into as User1, then make up multicast forward table, in Group0, add User1 as the copy member; Multicast forward table is based on the copy list of multicast member, after user applies adds certain multicast success, then is added in the multicast member tabulation of appointment.
4, configuration is based on the multicast address conversion table of User1 port, sets up the corresponding relation that the IP address/MAC Address of Group0 and user need ask IP address/MAC Address of the multicast channel Group5 that adds.
Be illustrated in figure 8 as the multicast message process chart that the present invention replaces multicast channel, the process of data flow is exactly that treatment step was as follows after the multicast message of Group0 entered from network-side port:
1, searches multicast forward table,, message is forwarded to the user port of appointment by the multicast replication module according to multicast forward table;
2, corresponding to each user port, search the multicast address conversion table, judge whether to carry out the multicast address conversion, if do not need extra process, then directly multicast message is sent to user port; Carry out the multicast address conversion if desired, then enter next step;
3, from the multicast address conversion table, read IP address and MAC Address after the address transition, IP address and MAC Address in the multicast message are replaced, and correspondingly revise Checksum (verification and) etc., again multicast message is sent to user port.
When access device is received at the query message of replacing multicast channel Group0, when perhaps access device self need refresh the multicast member tabulation of replacing multicast channel Group0, step was as follows:
1, access device sends the multicast inquiry message by the IGMP message to the multicast member of replacing multicast channel;
2, access device sent to user port with the address transition of this multicast inquiry message for the address of the multicast channel Group5 of the original application of user according to the multicast address conversion table;
When 3, user port returned response message, access device was defined as replacing the response request of multicast channel according to the multicast address conversion table.The response request that so just is equal to Group0, thus multicast forward table can be refreshed.
When access device receives after user terminal leaves the IGMP message of designated groups, at first judge according to the multicast address conversion table whether this user terminal is the user of described replacement multicast channel, be whether the user is for being forced to other group, if, then this user terminal of deletion from the multicast member tabulation of the replacement multicast channel of multicast forward table is removed the information relevant with this user terminal in the multicast conversion table.
The present invention has overcome the request of the direct refusing user's of prior art, causes the shortcoming of user terminal blank screen phenomenon, to user friendly, can not cause customer complaint.The present invention can be used for that user terminal request program failure the time replaces with standby or other programs send to user terminal, also can be as forcing to some advertisements of user terminal in the request program success etc.Those skilled in the art do not break away from essence of the present invention and spirit, can there be the various deformation scheme to realize the present invention, the above only is the preferable feasible embodiment of the present invention, be not so limit to interest field of the present invention, the equivalent structure that all utilizations specification of the present invention and accompanying drawing content are done changes, and all is contained within the interest field of the present invention.
Claims (8)
1, a kind of method for processing forwarding of group broadcasting program is characterized in that, may further comprise the steps:
A, when the user terminal application adds a certain multicast channel, if this user does not have authority or system resource to be not enough to support, the selected replacement multicast channel that differs from the multicast channel of applying for of access device, this user terminal is joined in the multicast member tabulation of this replacement multicast channel in the multicast forward table, and set up the address transition relation of application multicast channel and described replacement multicast channel;
B, after the multicast message of described replacement multicast channel enters access device from network-side port, access device is transmitted according to multicast forward table, and be the address of the multicast channel applied for according to the replacement multicast channel address transition that the address transition set up relation will mail to this user terminal, the multicast message that will replace multicast channel again sends to this user terminal.
2, the method for processing forwarding of group broadcasting program according to claim 1, it is characterized in that: in the described steps A, multicast failure Policy Table is set in access device, the content of this table comprises that the user terminal application adds reason and the pairing replacement multicast channel of different reasons that the request of a certain multicast channel can't be satisfied, and access device is according to the selected described replacement multicast channel of this multicast failure Policy Table.
3, the method for processing forwarding of group broadcasting program according to claim 2 is characterized in that: described replacement multicast channel is multicast channel that is added by access device static state or the multicast channel of dynamically being applied for from network by access device.
4, the method for processing forwarding of group broadcasting program according to claim 3, it is characterized in that: when described multicast failure Policy Table is configured, specify a fixedly multicast channel that differs from the multicast channel of applying for multicast channel as an alternative, or corresponding respectively different reason is specified the different multicast channels multicast channel as an alternative that differs from the multicast channel of applying for.
5, the method for processing forwarding of group broadcasting program according to claim 4 is characterized in that: the content of described replacement multicast channel is advertisement, free video or failure cause prompting.
6, the method for processing forwarding of group broadcasting program according to claim 3, it is characterized in that: when described multicast failure Policy Table is configured, select multicast channel multicast channel as an alternative the multicast channel that plays to user terminal at random or in sequence from having now to have existed.
7, the method for processing forwarding of group broadcasting program according to claim 3, it is characterized in that: in the described steps A, the multicast address conversion table is set in access device, the content of this table comprises whether the multicast channel address of mailing to certain user terminal needs to change, the multicast channel address of needs conversion and the multicast channel address after the conversion, and access device is set up described address transition relation according to this multicast address conversion table.
8, a kind of access device that carries out multicast forwarding comprises the multicast replication module, and this multicast replication module is duplicated forwarding according to multicast forward table to network multicast stream, it is characterized in that, also is provided with in the described access device:
The abnormality processing control module, be used for when the user terminal application adds a certain multicast channel, if this user does not have authority or system resource to be not enough to support, search this user terminal corresponding strategy, the selected replacement multicast channel that differs from the multicast channel of applying for, this user terminal is joined in the multicast member tabulation of this replacement multicast channel in the multicast forward table, and set up the address transition relation of application multicast channel and described replacement multicast channel;
The multicast address modular converter, be used for after the multicast replication module is carried out multicast forwarding according to multicast forward table, the replacement multicast channel address transition that will mail to user terminal according to the address transition set up relation is the address of the multicast channel applied for, and the multicast message that will replace multicast channel sends to user terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100345224A CN100438499C (en) | 2005-04-30 | 2005-04-30 | Group broadcast program repeating processing method and connecting device for multicast repeat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100345224A CN100438499C (en) | 2005-04-30 | 2005-04-30 | Group broadcast program repeating processing method and connecting device for multicast repeat |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1859272A CN1859272A (en) | 2006-11-08 |
| CN100438499C true CN100438499C (en) | 2008-11-26 |
Family
ID=37298136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100345224A Expired - Fee Related CN100438499C (en) | 2005-04-30 | 2005-04-30 | Group broadcast program repeating processing method and connecting device for multicast repeat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100438499C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101277254B (en) * | 2007-03-30 | 2010-11-10 | 华为技术有限公司 | Method and device for transmitting message |
| CN101414924B (en) * | 2008-11-27 | 2011-07-06 | 浪潮电子信息产业股份有限公司 | Sectorization broadcast method using network transmission |
| CN101909196B (en) | 2009-06-05 | 2013-04-17 | 华为技术有限公司 | Channel-switching handling method, system and related equipment |
| CN101834791B (en) * | 2010-04-21 | 2011-12-21 | 瑞斯康达科技发展股份有限公司 | Method for forwarding multicast message |
| CN103702178B (en) * | 2013-12-13 | 2018-08-03 | 乐视网信息技术（北京）股份有限公司 | A kind of playback method and electronic equipment |
| CN104601478A (en) * | 2014-12-30 | 2015-05-06 | 北京华为朗新科技有限责任公司 | Method and device for constructing message forwarding, sending, receiving and multicasting paths |
| CN111212325B (en) * | 2018-11-22 | 2022-06-17 | 玲珑视界科技（北京）有限公司 | Multicast channel production and playing system and method supporting IPv4 and IPv6 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1081917A2 (en) * | 1999-08-31 | 2001-03-07 | Hitachi, Ltd. | System and method for rejecting service requests in an information service system |
| CN1474563A (en) * | 2002-08-06 | 2004-02-11 | ��Ϊ��������˾ | Repeating method for multi-broadcast message in network communication |
| JP2004260288A (en) * | 2003-02-24 | 2004-09-16 | Nippon Telegr & Teleph Corp <Ntt> | Traffic aggregating system and method, and program and recording medium therefor |
| CN1584935A (en) * | 2003-08-19 | 2005-02-23 | 刘磊 | Method for realiznig differential broadcasting content zoned broadcasting in displaying screen and displaying apparatus thereof |
-
2005
- 2005-04-30 CN CNB2005100345224A patent/CN100438499C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1081917A2 (en) * | 1999-08-31 | 2001-03-07 | Hitachi, Ltd. | System and method for rejecting service requests in an information service system |
| CN1474563A (en) * | 2002-08-06 | 2004-02-11 | ��Ϊ��������˾ | Repeating method for multi-broadcast message in network communication |
| JP2004260288A (en) * | 2003-02-24 | 2004-09-16 | Nippon Telegr & Teleph Corp <Ntt> | Traffic aggregating system and method, and program and recording medium therefor |
| CN1584935A (en) * | 2003-08-19 | 2005-02-23 | 刘磊 | Method for realiznig differential broadcasting content zoned broadcasting in displaying screen and displaying apparatus thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1859272A (en) | 2006-11-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101160858B (en) | Implementing method and an apparatus for enhancing the multicast service manageability | |
| CN101669331B (en) | Method and system for locating content in broadband wireless access networks | |
| US7710983B2 (en) | Method and apparatus for determining information associated with a particular multicast channel in a multicast network | |
| CN100438499C (en) | Group broadcast program repeating processing method and connecting device for multicast repeat | |
| US20050220132A1 (en) | Multicast | |
| US7672325B2 (en) | Method and apparatus for improved IGMP group membership messaging | |
| WO2008080320A1 (en) | Media stream transmission method, system and related device | |
| US8203989B2 (en) | Distributing content in a communication network | |
| US20120023533A1 (en) | Method and apparatus for delivery of internet protocol television service | |
| CN101521583B (en) | Resource admission control method, system and device | |
| US20100050215A1 (en) | System and method for bandwidth handling | |
| US7944826B2 (en) | Method and system for service application and service application control agent | |
| EP2351300B1 (en) | Method and system for establishing digital media streams | |
| CN101388784A (en) | Method, device and system for processing multicast service information | |
| CN101374103B (en) | Resource management apparatus, resource management method and system | |
| CN101110814A (en) | Method for implementing authority control of user multicast | |
| CN101360222B (en) | IPTV program generating method and system based on next generation network | |
| US9161108B2 (en) | Method and system for establishing communication relations | |
| US20120124182A1 (en) | Method, a terminal, an access node and a media server for providing resource admission control of digital media streams | |
| KR100789379B1 (en) | Homegateway and its method for providing multicast traffic control function | |
| JP2008523685A (en) | Streaming data distribution | |
| KR100893045B1 (en) | Broadcasting service providing system and method using the point to multi-point connection in ATM network | |
| Islam et al. | Study of Reliable Multicast for IPTV Service | |
| BPS2000 | Solutions Reference Design |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081126 Termination date: 20190430 |