CN101902344B - Method for establishing multicast tree in public packet telecom data network (PTDN) and system thereof - Google Patents

Method for establishing multicast tree in public packet telecom data network (PTDN) and system thereof Download PDF

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CN101902344B
CN101902344B CN200910085840.1A CN200910085840A CN101902344B CN 101902344 B CN101902344 B CN 101902344B CN 200910085840 A CN200910085840 A CN 200910085840A CN 101902344 B CN101902344 B CN 101902344B
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multicast
described
destination
source
command message
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CN200910085840.1A
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CN101902344A (en
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胡方伟
楼卫光
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中兴通讯股份有限公司
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Abstract

The invention discloses a method for establishing a multicast tree in a public packet telecom data network (PTDN). The method comprises the following steps: a network administrator determines related parameters of multicast according to a multicast application provided by a user, and encapsulates the parameters in a control command message and transmits the control command message with the parameters to a source end; the source end configures resources according to the received control command message, and respectively encapsulates a corresponding multicast establishing command message for each target end, and transmits the multicast establishing command message to each target end correspondingly; the target end configures the resources according to the multicast establishing command message, and returns a multicast response message to the source end; and the source end generates a multicast tree establishing result according to the received multicast response message, and returns the result to the network administrator. The invention also discloses a multicast tree establishing system in the PTDN, and realizes establishment of the multicast tree in a working mode that the PTDN is not oriented to connection.

Description

Method for establishing multicast tree in a kind of PTDN and system

Technical field

The present invention relates to the multicasting technology in network service, particularly relate to the method for establishing multicast tree in a kind of common telecommunication grouping data net (PTDN) and system.

Background technology

There is uncontrollable, not ALARA Principle, not renewable electricity and the problem of quality of service guarantee can not be provided in existing IP network, and existing IP network does not ensure the fail safe that network is basic and trustability, safe practice and encryption technology abuse and out of control, significantly increase difficulty and the cost of information monitoring and the control that communicates, bring serious threat to the safety of information communication.

For the present situation of IP network, be currently suggested a kind of new Packet Data Network, i.e. common telecommunication grouping data net (PTDN, Public Packet Telecom Data Network).PTDN is the Packet Data Network for telecommunications object, can carry the already present whole telecommunication service of current industry, and ensures that its telecommunication service carried can provide the service quality identical with conventional telecommunications business; PTDN can carry Intemet business, provides the ability identical with existing Internet, supports the already present whole Internet business of current industry, can also be used to carrying other business issuable from now on.PTDN is a network trusty, sets up the datum plane of service network thereon, control plane and management plane, without the need to adopting safety encipher technology and the relation that breaks the wall of mistrust, can ensure the safety of service network.

PTDN relates to International Organization for standardization (OSI, Open System Interconnection) link layer (two layers) in seven layer model and network layer (three layers), and PTDN supports connection-oriented working method and not connection-oriented working method.

In connection-oriented working method, the communications status control and management in point to point link all realizes at the chain of command of link layer; Connection establishment process in end-to-end communication and the maintenance of connection status have been come by the chain of command of network layer, comprising the virtual circuit foundation in end-to-end communication, dismounting and status report etc.; It is then come by the data surface of link layer that data transmit.

In not connection-oriented working method, data communication is end to end that apparatus for network node relies on the network address of carrying in packet data package to carry out forwarding, realization is fetched without the need to setting up to virtually connect end to end, therefore, do not need the chain of command of network layer to carry out maintenance and management to the connection establishment process of end-to-end communication and connection status, the forwarding of packet is directly realized by network layer; The chain of command of network layer is in order to realize the functions such as Report of Discrepancy, VPN (virtual private network) (VPN, Virtual Private Network) foundation, multicast foundation.Under not connection-oriented working method, Control on Communication and the management of point-to-point are born by the chain of command of link layer, and the transmission of packet is born by the data surface of network layer, and Report of Discrepancy, VPN foundation, multicast foundation etc. are provided by the chain of command of network layer.

The data message form of PTDN under not connection-oriented working method, as shown in Figure 1, the structure of this heading mainly comprises: the information such as version number, type of message, address size, traffic flow types, VPN mark, multicast mark, loaded length, time-to-live (TTL, Time To Live), extension header mark, VPN numbering, source address and destination address.Wherein, type of message is used for logically distinguishing the datum plane of PTDN, control plane and management plane message, and type of message should be data message herein.When multicast is designated 1, represent that this data message is multicast message, source address is multicast source address, and destination address is multicast numbering.

The control message format of PTDN under not connection-oriented working method, as shown in Figure 2, the structure of this heading comprises: the information such as version number, type of message, address size, command type, order length, source address and destination address.

But prior art is for the problem of multicast packet process in PTDN, and the problem that especially multicast tree is set up under not connection-oriented working method, also cannot provide a kind of effective solution, thus make troubles to practical application.

Summary of the invention

In view of this, main purpose of the present invention is to provide the method for establishing multicast tree in a kind of PTDN and system, to realize the foundation of PTDN multicast tree under not connection-oriented working method.

For achieving the above object, technical scheme of the present invention is achieved in that

The invention provides the method for establishing multicast tree in a kind of PTDN, the method comprises:

The relevant parameter of the multicast application determination multicast that webmaster proposes according to user, and described relevant parameter is encapsulated in control command message sends to described source;

Described source, according to the control command message resource allocation received, sets up command message for each destination encapsulates corresponding multicast respectively, and described multicast is set up command message correspondence sends to each destination;

Described destination sets up command message resource allocation according to the multicast received, and returns multicast response message to described source;

Described source generates multicast tree according to received multicast response message and sets up result, and described result is returned to webmaster.

The method comprises further:

Described source starts the multicast response message that described in timer wait-receiving mode, destination returns after setting up command message to destination transmission multicast;

If receive the multicast response message that described destination returns before timer expiry, then, when being defined as success response, timeing closing device, enters state of activation, and records result; When being defined as failure response, discharging the resource configured, and recording result;

If do not receive the multicast response message that described destination returns before timer expiry, then retransmit described multicast and set up command message, and stop when described sending times reaches default threshold number retransmitting, discharge the resource configured, and record result.

The method comprises further: when there is intermediate node between described source and destination, described intermediate node sets up command message resource allocation according to the multicast from source, described multicast is set up command message and is transmitted to destination, and the successful multicast response message repeating returned by described destination gives described source, is specially:

Described intermediate node receives and sets up command message from the multicast of source, and number and source information according to the multicast that described multicast is set up in command message, search the local multicast information that whether there is multicast numbering and source information matches, if there is no, then set up multicast numbering in command message and the new multicast information of source information configuration and resource according to described multicast, and described multicast is set up command message be transmitted to destination;

If existed, then search the described multicast outgoing interface set up in command message and whether be included in the multicast information that intermediate node deposited, if so, then described intermediate node is joined in multicast group, and described multicast is set up command message be transmitted to destination; Otherwise, search in multicast group and whether have described intermediate node, if had, then return successful multicast response message directly to source, if do not had, be then the newly-increased branch of multicast tree, and configure corresponding multicast information and resource, after configuring, described multicast is set up command message and be transmitted to destination.

The method comprises further:

After described intermediate node sets up command message to destination forwarding multicasting, start the multicast response message that described in timer wait-receiving mode, destination returns;

If receive the multicast response message that described destination returns before timer expiry, then when being defined as success response, timeing closing device, and by successful multicast response message repeating to source; When being defined as failure response, timeing closing device, discharges the resource configured, and by the multicast response message repeating of failure to source;

If do not receive the multicast response message that described destination returns before timer expiry, then retransmit described multicast and set up command message, and stop when described sending times reaches default threshold number retransmitting, discharge the resource configured, and record result.

The multicast tree that present invention also offers in a kind of PTDN sets up system, comprising: webmaster, source and destination, wherein,

Described webmaster, for the relevant parameter of multicast application determination multicast proposed according to user, is encapsulated in described relevant parameter in control command message and sends to described source; And receive the multicast tree that described source returns and set up result;

Described source, for according to the control command message resource allocation from webmaster, sets up command message for each destination encapsulates corresponding multicast respectively, described multicast is set up command message correspondence and sends to each destination; And the multicast response message returned according to described destination generates multicast tree sets up result and return to described webmaster;

Destination, for setting up command message resource allocation according to the multicast received, and returns multicast response message to described source.

This system comprises further: intermediate node, between described source and destination, for setting up command message resource allocation according to the multicast from source, described multicast is set up command message and is transmitted to destination, and the successful multicast response message repeating returned by described destination gives described source.

Described intermediate node also for, when described destination returns the multicast response message of failure, discharge the resource of holding configuration for the purpose of self, and by described failed multicast response message repeating to source.

Described intermediate node also for, according to when setting up the failure of command message resource allocation from the multicast of source, return the multicast response message of failure directly to described source.

Described source also for, sending after multicast sets up command message to intermediate node, start the multicast response message that described in timer wait-receiving mode, intermediate node returns; Record the sending times that described multicast sets up command message, and when recorded sending times reaches default threshold number, stop retransmitting.

Described intermediate node also for, sending after multicast sets up command message to destination, start the multicast response message that described in timer wait-receiving mode, destination returns; Record the sending times that described multicast sets up command message, when recorded sending times reaches default threshold number, stop retransmitting, and return the multicast response message of failure to source.

Method for establishing multicast tree in a kind of PTDN provided by the present invention and system, the relevant parameter of the multicast application determination multicast proposed according to user by webmaster, and be encapsulated in control command message and send to source; Source, according to the control command message resource allocation received, set up command message, and correspondence sends to each destination for each destination encapsulates corresponding multicast respectively; Destination sets up command message resource allocation according to the multicast received, and returns multicast response message to source; Source generates multicast tree according to received multicast response message again and sets up result, and returns to webmaster.By present invention achieves the foundation of PTDN multicast tree under not connection-oriented working method, the muticast data transmission of PTDN under not connection-oriented working method provides the foundation condition, brings facility to practical application.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of the data message form of PTDN under not connection-oriented working method in prior art;

Fig. 2 is the schematic diagram of the control message format of PTDN under not connection-oriented working method in prior art;

Fig. 3 is the flow chart of the method for establishing multicast tree in a kind of PTDN of the present invention;

Fig. 4 is the process chart of method for establishing multicast tree in source of the embodiment of the present invention;

Fig. 5 is the process chart of method for establishing multicast tree at intermediate node of the embodiment of the present invention;

Fig. 6 is the composition structural representation that multicast tree in a kind of PTDN of the present invention sets up system.

Embodiment

Below in conjunction with the drawings and specific embodiments, the technical solution of the present invention is further elaborated.

Method for establishing multicast tree in a kind of PTDN provided by the present invention, as shown in Figure 3, mainly comprises the following steps:

Step 301, the relevant parameter of the multicast application determination multicast that webmaster proposes according to user, and this relevant parameter is encapsulated in control command message sends to source.

User, when applying for multicast service, proposes multicast application by Service Handling Center to webmaster, and this multicast application comprises flux of multicast and flows to the parameters such as matrix.Webmaster comprises according to the relevant parameter of the multicast that multicast application is determined: the relevant parameter etc. of source and destination information, multicast numbering and route data path; Wherein, the relevant parameter of route data path comprises: the parameters such as the flow of route data path and bandwidth.

Step 302, source, according to the control command message resource allocation received, sets up command message for each destination encapsulates corresponding multicast respectively, and multicast is set up command message correspondence and send to each destination.

Step 303, destination sets up command message resource allocation according to the multicast received, and returns multicast response message to source.

Step 304, source generates multicast tree according to received multicast response message and sets up result, and result is returned to webmaster.

It is to be noted, if there is intermediate node between source and destination, so intermediate node needs to set up command message resource allocation according to the multicast from source, multicast is set up command message and is transmitted to destination, and the successful multicast response message repeating returned by destination is to source.

Below in conjunction with Fig. 4, the handling process of method for establishing multicast tree in source is described in detail, as shown in Figure 4, mainly comprises the following steps:

Step 401, source according to the source in the control command message received and destination information, multicast numbering and the relevant parameter resource allocation of route data path, and sets up command message for each destination encapsulates corresponding multicast respectively.

Step 402, sets up command message correspondence by packaged multicast and sends to each destination.

It is pointed out that, if do not have intermediate node between some destination and source, so the multicast of correspondence is set up command message and directly sent to this destination by source; If there is intermediate node between some destination and source, so the multicast of correspondence is set up command message and is sent to this destination by intermediate node by source needs.

Step 403, starts timer, enters wait-for-response state.

Step 404, judges whether to receive before timer expiry the response that destination returns, if received, then performs step 406; Otherwise, perform step 405.

Step 405, judges whether source reaches default threshold number (N time) to the sending times of this ordered multicast message, if so, then performs step 409; Otherwise, return step 402 and resend this ordered multicast message.

Step 406, determines whether the response that destination returns is success response, if so, then performs step 407; Otherwise, perform step 408.

Step 407, when determining that destination returns success response, timeing closing device, enters state of activation, and records result, forwards step 409 to after executing.

Step 408, when determining that destination returns failure response, discharging the resource and multicast information that configure, and recording result, forwarding step 409 to after executing.

Step 409 ~ 410, judge whether all destinations all complete operations, namely return response, if so, then perform step 411; Otherwise, perform step 410, wait for all destinations all complete operations, and return step 409 continuation judgement.

Step 411, after all destinations all complete operation, source generates multicast according to the response that destination returns and sets up result, and result is returned to webmaster.

Composition graphs 5 pairs of method for establishing multicast tree are described in detail in the handling process of intermediate node more below, as shown in Figure 5, mainly comprise the following steps:

Step 501, intermediate node receives and sets up command message from the multicast of source.

Step 502, numbers and source information according to the multicast that multicast is set up in command message, searches the local multicast information that whether there is multicast numbering and source information matches, if existed, then performs step 503; Otherwise, perform step 509.

Whether step 503, search the multicast outgoing interface set up in command message and be included in the multicast information that intermediate node deposited, if so, then perform step 504; Otherwise, perform step 505.

Step 504, joins intermediate node in multicast group, forwards step 511 to after having operated.

The multicast outgoing interface set up in command message is included in the multicast information that intermediate node deposited, and showing that multicast that intermediate node receives sets up command message is that the multicast retransmitted sets up command message.

Step 505, searches in multicast group whether have this intermediate node, if had, then performs step 506; Otherwise, perform step 507.

Step 506, returns successful multicast response message directly to source.

If this intermediate node existing, then show that this intermediate node is the destination that this multicast sets up command message in multicast group, in this case, setting up command message without the need to continuing to forward this multicast, returning successful multicast response message directly to source.

Step 507, is the newly-increased branch of multicast tree, and configures corresponding multicast information and resource.

If not this intermediate node in multicast group, then show that this multicast sets up the newly-increased branch in the corresponding multicast tree of command message, thus need for this newly-increased corresponding multicast information of branch configuration and resource.

Step 508, judges that whether configuration is successful, if success, then performs step 511; Otherwise, perform step 516.

Step 509, sets up multicast numbering in command message and the new multicast information of source information configuration and resource according to multicast.

Step 510, judges that whether configuration is successful, if success, then performs step 511; Otherwise, perform step 516.

Step 511, sets up command message by multicast and is transmitted to destination.

Step 512, starts timer, waits for the multicast response message that destination returns.

Step 513, judges whether to receive before timer expiry the multicast response message that destination returns, and if so, then performs step 514; Otherwise, perform step 515.

Step 514, by the multicast response message repeating that receives to source.

Step 515, judges whether intermediate node reaches default threshold number (N time) to the sending times of this ordered multicast message, if so, then performs step 516; Otherwise, return step 511 and perform repeating transmission.

Step 516, returns the multicast response message of failure to source.

It is pointed out that in the flow process shown in above-mentioned Fig. 5, if destination returns to intermediate node is failed multicast response message, so intermediate node needs to discharge the resource of holding configuration for the purpose of self.In addition, when intermediate node sets up the failure of command message resource allocation according to the multicast from source, return the multicast response message of failure directly to source, and be transmitted to destination without the need to again the multicast of source being set up command message.

Destination receives after multicast sets up command message, if accept successfully, then returns successful multicast response message, and enters the state of multicast reception; If accept unsuccessfully, then return the multicast response message of failure, and get back to initial condition.

For realizing the method for establishing multicast tree in above-mentioned PTDN, the multicast tree that present invention also offers in a kind of PTDN sets up system, and as shown in Figure 6, this system comprises: webmaster 10, source 20 and destination 30.Webmaster 10, for the relevant parameter of multicast application determination multicast proposed according to user, is encapsulated in this relevant parameter in control command message and sends to source 20; And receive the multicast tree that source 20 returns and set up result.Source 20, for according to the control command message resource allocation from webmaster 10, sets up command message for each destination 30 encapsulates corresponding multicast respectively, multicast is set up command message correspondence and send to each destination 30; And the multicast response message returned according to destination 30 generates multicast tree sets up result and return to webmaster 10.Destination 30, for setting up command message resource allocation according to the multicast received, and returns multicast response message to source 20.

As another embodiment of the present invention, this system comprises intermediate node 40 further on the basis of said apparatus, between described source 20 and destination 30, for setting up command message resource allocation according to the multicast from source 20, multicast is set up command message and be transmitted to destination 30, and the successful multicast response message repeating returned by destination 30 is to source 20.

In addition, intermediate node 40 also for, when destination 30 returns the multicast response message of failure, discharge the resource of holding configuration for the purpose of self, and by the multicast response message repeating of failure to source 20.When setting up the failure of command message resource allocation according to the multicast from source 20, return the multicast response message of failure directly to source 20.

Source 20 also for, sending after multicast sets up command message to intermediate node 40, start the multicast response message that timer wait-receiving mode intermediate node 40 returns; Record multicast sets up the sending times of command message, and when recorded sending times reaches default threshold number, stops retransmitting.

Intermediate node 40 also for, sending after multicast sets up command message to destination 30, start the multicast response message that timer wait-receiving mode destination 30 returns; Record multicast sets up the sending times of command message, when recorded sending times reaches default threshold number, stops retransmitting, and returns the multicast response message of failure to source 20.

The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.

Claims (10)

1. the method for establishing multicast tree in common telecommunication grouping data net PTDN, it is characterized in that, the method comprises:
The relevant parameter of the multicast application determination multicast that webmaster proposes according to user, and described relevant parameter is encapsulated in control command message sends to source; The relevant parameter of described multicast comprises: the relevant parameter of source and destination information, multicast numbering and route data path; The relevant parameter of described route data path comprises: the flow of route data path and bandwidth parameter;
Described source, according to the control command message resource allocation received, sets up command message for each destination encapsulates corresponding multicast respectively, and described multicast is set up command message correspondence sends to each destination;
Described destination sets up command message resource allocation according to the multicast received, and returns multicast response message to described source;
Described source generates multicast tree according to received multicast response message and sets up result, and described result is returned to webmaster.
2. the method for establishing multicast tree according to claim 1 in PTDN, it is characterized in that, the method comprises further:
Described source starts the multicast response message that described in timer wait-receiving mode, destination returns after setting up command message to destination transmission multicast;
If receive the multicast response message that described destination returns before timer expiry, then, when being defined as success response, timeing closing device, enters state of activation, and records result; When being defined as failure response, discharging the resource configured, and recording result;
If do not receive the multicast response message that described destination returns before timer expiry, then retransmit described multicast and set up command message, and stop when described sending times reaches default threshold number retransmitting, discharge the resource configured, and record result.
3. the method for establishing multicast tree in PTDN according to claim 1 or 2, it is characterized in that, the method comprises further: when there is intermediate node between described source and destination, described intermediate node sets up command message resource allocation according to the multicast from source, described multicast is set up command message and is transmitted to destination, and the successful multicast response message repeating returned by described destination gives described source, is specially:
Described intermediate node receives and sets up command message from the multicast of source, and number and source information according to the multicast that described multicast is set up in command message, search the local multicast information that whether there is multicast numbering and source information matches, if there is no, then set up multicast numbering in command message and the new multicast information of source information configuration and resource according to described multicast, and described multicast is set up command message be transmitted to destination;
If existed, then search the described multicast outgoing interface set up in command message and whether be included in the multicast information that intermediate node deposited, if so, then described intermediate node is joined in multicast group, and described multicast is set up command message be transmitted to destination; Otherwise, search in multicast group and whether have described intermediate node, if had, then return successful multicast response message directly to source, if do not had, be then the newly-increased branch of multicast tree, and configure corresponding multicast information and resource, after configuring, described multicast is set up command message and be transmitted to destination.
4. the method for establishing multicast tree according to claim 3 in PTDN, it is characterized in that, the method comprises further:
After described intermediate node sets up command message to destination forwarding multicasting, start the multicast response message that described in timer wait-receiving mode, destination returns;
If receive the multicast response message that described destination returns before timer expiry, then when being defined as success response, timeing closing device, and by successful multicast response message repeating to source; When being defined as failure response, timeing closing device, discharges the resource configured, and by the multicast response message repeating of failure to source;
If do not receive the multicast response message that described destination returns before timer expiry, then retransmit described multicast and set up command message, and stop when described sending times reaches default threshold number retransmitting, discharge the resource configured, and record result.
5. the multicast tree in PTDN sets up a system, it is characterized in that, comprising: webmaster, source and destination, wherein,
Described webmaster, for the relevant parameter of multicast application determination multicast proposed according to user, is encapsulated in described relevant parameter in control command message and sends to described source; And receive the multicast tree that described source returns and set up result; The relevant parameter of described multicast comprises: the relevant parameter of source and destination information, multicast numbering and route data path; The relevant parameter of described route data path comprises: the flow of route data path and bandwidth parameter;
Described source, for according to the control command message resource allocation from webmaster, sets up command message for each destination encapsulates corresponding multicast respectively, described multicast is set up command message correspondence and sends to each destination; And the multicast response message returned according to described destination generates multicast tree sets up result and return to described webmaster;
Destination, for setting up command message resource allocation according to the multicast received, and returns multicast response message to described source.
6. the multicast tree according to claim 5 in PTDN sets up system, it is characterized in that, this system comprises further: intermediate node, between described source and destination, for setting up command message resource allocation according to the multicast from source, described multicast is set up command message and is transmitted to destination, and the successful multicast response message repeating returned by described destination gives described source.
7. the multicast tree according to claim 6 in PTDN sets up system, it is characterized in that, described intermediate node also for, when described destination returns the multicast response message of failure, discharge the resource of holding configuration for the purpose of self, and by described failed multicast response message repeating to source.
8. the multicast tree according to claim 6 in PTDN sets up system, it is characterized in that, described intermediate node also for, when setting up the failure of command message resource allocation according to the multicast from source, return the multicast response message of failure directly to described source.
9. the multicast tree according to claim 6 in PTDN sets up system, it is characterized in that, described source also for, sending after multicast sets up command message to intermediate node, start the multicast response message that described in timer wait-receiving mode, intermediate node returns; Record the sending times that described multicast sets up command message, and when recorded sending times reaches default threshold number, stop retransmitting.
10. the multicast tree according to claim 6 in PTDN sets up system, it is characterized in that, described intermediate node also for, sending after multicast sets up command message to destination, start the multicast response message that described in timer wait-receiving mode, destination returns; Record the sending times that described multicast sets up command message, when recorded sending times reaches default threshold number, stop retransmitting, and return the multicast response message of failure to source.
CN200910085840.1A 2009-06-01 2009-06-01 Method for establishing multicast tree in public packet telecom data network (PTDN) and system thereof CN101902344B (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1713611A (en) * 2004-06-24 2005-12-28 信息产业部电信研究院 Group broadcast realization in IP telecommunication network system
CN1859255A (en) * 2006-03-02 2006-11-08 华为技术有限公司 Realizing method for automatic exchanging optic network multicast network interface service
EP2031796A1 (en) * 2007-08-30 2009-03-04 NTT DoCoMo, Inc. Method and apparatus for multicast tree allocation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1713611A (en) * 2004-06-24 2005-12-28 信息产业部电信研究院 Group broadcast realization in IP telecommunication network system
CN1859255A (en) * 2006-03-02 2006-11-08 华为技术有限公司 Realizing method for automatic exchanging optic network multicast network interface service
EP2031796A1 (en) * 2007-08-30 2009-03-04 NTT DoCoMo, Inc. Method and apparatus for multicast tree allocation

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