CN1852231A - Base station in wide-band wireless access-in system and method for realizing multi-cast business - Google Patents
Base station in wide-band wireless access-in system and method for realizing multi-cast business Download PDFInfo
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- CN1852231A CN1852231A CNA2005101014360A CN200510101436A CN1852231A CN 1852231 A CN1852231 A CN 1852231A CN A2005101014360 A CNA2005101014360 A CN A2005101014360A CN 200510101436 A CN200510101436 A CN 200510101436A CN 1852231 A CN1852231 A CN 1852231A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/40—Connection management for selective distribution or broadcast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/16—Multipoint routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/121—Wireless traffic scheduling for groups of terminals or users
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
In broadband wireless access system, base station with router and multiple user stations being connected to includes following parts: listening module in use for listening message between user station and router, or module of message proxy in use for intercepting message between user station and router; module for maintaining forwarding table of multicast address, module for executing multicast forwarding are in use for allotting an identical connection id for all user station in multicast group in order to manage adding or removed group of user station, or maintaining user data, and sending multicast data to user station. The invention also discloses relevant method. User stations in multicast group are not possible to receive multicast message by using the invention so as to reduce power consumption of user station, and raise safety. Moreover, equipment in base station does not need to carry out replication of multicast packet so as to save bandwidth resource of aerial port.
Description
Technical field
The present invention relates to BWA, particularly relate to the base station in BWA and realize the method for multicast service.
Background technology
Traditional IP communication (as IPv4 communication) be between a source IP main frame and Target IP main frame in (clean culture) or source IP main frame and the network between all IP main frame (broadcasting) carry out.If we will send to information a plurality of in the network but not all IP main frames, or adopt broadcast mode, otherwise by source IP main frame respectively a plurality of Target IP main frames in network send the IP bag.Preceding a kind of mode not only can send to information unwanted IP main frame and waste bandwidth, also may be because the route winding cause a serious broadcast storm; A kind of mode in back has also increased the load of server owing to the transmission that repeats of IP bag wastes massive band width.We can say that traditional IP communication technology can not solve the problem that single-point sends, multiple spot receives effectively.
And the IP multicasting technology that occurred afterwards allows source IP main frame that the IP packets of information is sent on any one group of Target IP main frame on the IP network, can solve single-point effectively and send that multiple spot receives, multiple spot sends the problem that multiple spot receives.Obtained to use widely at aspects such as multimedia conferencing, data distribution, distributed parallel processing and DISs, become one of technology that must adopt in the IP network.
As Fig. 1, Fig. 2 and shown in Figure 3, be respectively in the existing IP communication, the data flow diagram of broadcast mode, mode of unicast, three kinds of modes of multicast mode.It all is transmission of forms such as the broadcasting of carrying out message between router, base station, subscriber station and user, clean culture, multicast.
In BWA, as, world's inserting of microwave interoperability tissue (Worldwideinteroperability for microwave access, WiMAX) in IEEE 802.16 standards that promoted, network side has multicast message need give subscriber's main station, base station (Base Station, BS) equipment is received purpose medium access control (Media Access Control, MAC) address is the message of multicast mac address, BS equipment can't find output port by two layers of study, and its general method that adopts has:
A, be broadcast to all subscriber stations (Subscriber Station, SS), even have only one of them SS to need this multicast message.This implementation method is fairly simple, but it also has certain shortcoming: the processing burden that it has increased the recipient who does not need multicast message has also increased the power consumption of SS equipment.In addition, the main frame of not adding group also can be received multicast message, can bring unsafe situation.
B, according to certain rule (for example, can be manual configuration), multicast message is changed into unicast message, deliver to the SS that needs, like this, have only the recipient (SS) who needs multicast message just can receive this message, but in this implementation method, need BS equipment or other equipment to realize the multicast replication function, increased the complexity of equipment, for example, if the SS in the multicast group is very many, then need each SS that copies to one by one, can increase the complexity of BS equipment like this, also greatly wasted the bandwidth resources of eating dishes without rice or wine,, also become the bottleneck of network easily because flow duplicates.
Summary of the invention
Technical problem to be solved by this invention is, the base station in a kind of BWA is provided and realizes the method for multicast service.
The technical scheme that adopts for solving the problems of the technologies described above is: a kind of base station in BWA is provided, it is connected with router and a plurality of subscriber station, comprising: be used for the intercepting module or be used to tackle message proxy module between subscriber station and the router of message between listen for user station and the router; Multicast address is transmitted maintenance module, is used for setting up and safeguarding that multicast address transmits according to the type of the message of intercepting or tackling; Multicast services is set up module, multicast forwarding Executive Module, and it is that all subscriber stations in the multicast group distribute an identical connection identifier, according to the adding of this connection identifier management group subscriber station or leave, maintenance customer's data, and send multicast packet to subscriber station.
Wherein, the described module of intercepting is that the MLD that is used for the IGMP snooping module of IPv4 or is used for the IPv6 network intercepts module, and described proxy module is the MLD proxy module that is used for the igmp proxy module of IPv4 or is used for IPv6.
Wherein, described IGMP snooping module and the igmp proxy module message of intercepting or tackling comprise igmp querying message from router, from the IGMP report message and the IGMP leave message of subscriber station.
Wherein, the igmp querying message is intercepted or intercepted to described IGMP snooping module and igmp proxy module, can determine the port of the base station equipment that links to each other with router; Described IGMP snooping module and igmp proxy module are intercepted the IGMP report message, judge whether port is added multicast group according to the port and the group in the report message that receive the IGMP report, and perhaps newly-built multicast group is transmitted; Described IGMP snooping module and igmp proxy module are intercepted IGMP leave message, and it sends a group-specific query message to the port of receiving this IGMP leave message, whether also have the member of this multicast group to confirm this port.
Wherein, described MLD intercepts the message that module and MLD proxy module intercept or tackle and comprises that group membership query messages, group membership report message and group membership reduce message packet.
The present invention also provides a kind of method that realizes multicast service in BWA, and it comprises: (a) base station equipment utilizes the module proxy module of intercepting in it to intercept or tackle the message that transmits between subscriber station and router; (b) according to the type of the message of intercepting or tackling safeguard that multicast address transmits; (c) transmit according to multicast address and distribute an identical connection identifier to set up multicast services between base station and the subscriber station for all subscriber stations in the multicast group by base station equipment.
Wherein, the described module of intercepting is that the MLD that is used for the IGMP snooping module of IPv4 or is used for the IPv6 network intercepts module, and described proxy module is the MLD proxy module that is used for the igmp proxy module of IPv4 or is used for IPv6; The described message that between subscriber station and router, transmits, for the IPv4 network, this message is igmp querying message, IGMP report message or IGMP leave message; For the IPv6 network, this message is that group membership query messages, group membership report message or group membership reduce message packet.
Wherein, further comprise multicast foundation: the IGMP report message that transmits between main frame and the router is intercepted or tackled to base station equipment; Whether there is this multicast group in transmitting according to the multicast address in the multicast query facility in this IGMP report message; If there is not this multicast group during multicast address is transmitted, create a multicast group and transmit, in transmitting, this multicast group adds source user station equipment information, distribute a new connection identifier, and the outlet of multicast group in transmitting is set to this connection identifier; The notification source customer station equipment receives the message of this connection identifier.
Wherein, comprise that further multicast adds: the IGMP report message that transmits between main frame and the router is intercepted or tackled to base station equipment; Whether there is this multicast group in transmitting according to the multicast address in the multicast query facility in this IGMP report message; If there is this multicast group during multicast address is transmitted, then in transmitting, this multicast address adds source user station equipment information, obtain the outlet connection identifier; The notification source customer station equipment receives the message of this connection identifier.
Wherein, comprise that further multicast leaves: the leave message that transmits between subscriber station and the router is intercepted or tackled to base station equipment; Transmit according to the multicast address in the inquiry of the multicast group number in this IGMP leave message base station equipment, and delete this multicast address and transmit middle source user station equipment information, obtain outlet connection identifier information; The notification source customer station equipment does not receive the message of this connection identifier; Judge that whether this multicast address also has customer station equipment in transmitting, if having, does not then handle; Send the message of this multicast group if receive by this connection identifier from network side.
Wherein, further comprise the multicast deletion: the leave message that transmits between subscriber station and the router is intercepted or tackled to base station equipment; Transmit according to the multicast address in the inquiry of the multicast group number in this IGMP leave message base station equipment, and delete this multicast address and transmit middle source user station equipment information, obtain outlet connection identifier information; The notification source customer station equipment does not receive the message of this connection identifier; Judge whether this multicast address also has customer station equipment in transmitting, if do not have, the deletion multicast address is transmitted, and reclaims connection identifier; Then abandon the message of this multicast group if receive from network side.
Beneficial effect of the present invention is: utilize the characteristic of the point of BWA to multiple spot, realize the transmission of multicast service on this BWA.The main frame in this multicast group can not received multicast message, thereby reduce the SS power consumption, and guarantee fail safe.In addition, BS equipment need not to carry out complicated multicast packets and duplicates, and its work is simple, and has saved the bandwidth resources of eating dishes without rice or wine.
Description of drawings
Fig. 1 is that message carries out the schematic diagram that broadcast mode transmits in IPv4 network or the IPv6 network;
Fig. 2 is that message carries out the schematic diagram that mode of unicast transmits in IPv4 network or the IPv6 network;
Fig. 3 is that message carries out the schematic diagram that the multicast mode is transmitted in IPv4 network or the IPv6 network;
Fig. 4 is a multicast protocol layered system schematic diagram;
Fig. 5 is the IGMP snooping schematic flow sheet among the present invention;
Fig. 6 is the igmp proxy schematic flow sheet during this is.
Embodiment
Alleged main frame among the present invention is meant and can't transmits the not explicit node (non-router) that is addressed to the IP packet of himself.Usually, main frame is the source and target of the IP traffic.Main frame can abandon stealthily that it receives, the not explicit traffic that is addressed to himself, can think a kind of form of main frame as the user at Fig. 1 to Fig. 3.
See also multicast protocol layered system shown in Figure 4, as can be seen, Internet Group Management Protocol (Internet Group Management Protocol wherein, IGMP) be in the bottom of multicast protocol, it is the basis of whole multicast protocol, IGMP is used for that router adds main frame or the situation of leaving multicast group is carried out dynamic management, sets up three layers of multicast address and transmits.In multicast protocol, have only the IGMP agreement directly to get in touch with the program request main frame, the router of operation IGMP is in charge of the group subscriber's main station and is added, leaves, and by maintenance customer's data, the transmission multicast packet is to main frame.
In base station equipment provided by the present invention, it includes at least: IGMP snooping (IGMP Snooping) module and igmp proxy (IGMP Proxy) module that are used for the IPv4 network; (Multicast Listener Discovery MLD) intercepts module and MLD proxy module to be used for the multicast monitoring discovery protocol of IPv6 network; Comprise that further multicast address transmits maintenance module; And multicast services is set up module, multicast forwarding Executive Module.
Wherein, two-layer equipment (as base station equipment) can utilize the IGMP message that transmits between IGMP snooping module interception main frame and the router, transmits with this multicast address of safeguarding two layers.
The igmp proxy module can be tackled IGMP message between user and the router and be set up multicast address and transmit, and the first line of a couplet port of igmp proxy module is carried out the role of main frame, and second line of a couplet port is carried out the role of router.Its first line of a couplet port is carried out the role of main frame, and response is from the inquiry of router, and when Add User group or last user of certain multicast group withdrawed from, this igmp proxy module initiatively sent the member to router and reports bag or leave bag.The business packet of down direction is transmitted according to multicast table.Its second line of a couplet port is carried out the role of router, carries out according to the mechanism of stipulating among the IGMP V2 fully, comprises querier election mechanism, regularly sends general polling information, receives to send ad hoc inquiry etc. when leaving bag.
Wherein the two the main distinction of function of realization of IGMP snooping module and igmp proxy module is, the igmp proxy module realizes different functions respectively at two ports, workload is relatively large, its advantage is when not having router in the network, the igmp proxy module can play inquiry's effect, and if expansion multicast routing function, igmp proxy is more convenient than IGMP snooping.
And multicast services set up module be by 802.16 (WiMAX) broadband wireless access standard connection identifier (connection ID, CID) assigning process is set up, it can be realized, and multicast is set up, multicast adds, several functions such as multicast leaves, multicast deletion.
The multicast forwarding Executive Module is used to realize concrete multicast forwarding process.
And for the IPv6 network, different places is that the multicast protocol message between IP main frame and the router is multicast monitoring discovery protocol (Multicast Listener Discovery, MLD) message.Comparing with the IGMP agreement of IPv4, is MLD message format difference, and the negotiations process of agreement is identical.
802.16 (WiMAX) BWA itself is that a point is to multiple spot (Point to MultIPoint, PMP) system, also defined multicast functionality in its agreement, but the just inner realization between BS, SS of this multicast functionality, outside multicast protocol can not directly use this function.
Below in conjunction with Fig. 5 the implementation procedure of IGMP snooping of the present invention and the implementation procedure of multicast services are described.Following description is to carry out in conjunction with the IGMP V2 version in the IPv4 network.
IGMP snooping realizes: at first, BS equipment need be discerned the IGMP message, safeguards the Layer 2 Multicast addresses forwarding table according to the type of IGMP message then.IGMP V2 version has inquiry, reports, leaves three kinds of type of messages.
A, igmp querying: this igmp querying message issues from router, is mainly used in the situation of multicast member below confirming, multicast member should respond after receiving inquiry, promptly sends out the IGMP report message.For the IGMP snooping module, it needs can to determine router port according to igmp querying, and this router port is the port of the two-layer equipment (BS) that links to each other with this router.
B, IGMP report: the generation of IGMP report message has two kinds of situations, and the first is to the response of query router; It two is initiatively to initiate to router.For the IGMP snooping module, it can not distinguish this two kinds of situations, because the report message that both of these case produces is the same fully, its need judge whether port is added multicast group according to the port and the group in the report message that receive the IGMP report, and perhaps newly-built multicast group is transmitted.
C, IGMP leave: the message of thinking no longer to receive a certain multicast group as a group membership, it can send out IGMP leave message to router, when the IGMP snooping module receives this IGMP leave message, it sends a group-specific query message to the port of receiving this IGMP leave message, whether also has the member of this multicast group to confirm this port.
And in the IPv6 network,, be respectively group membership query messages, group membership report message, group membership minimizing message to this 3 kinds of messages should be arranged.The form of these three kinds of message is different with the message format in the IPv4 network, but its negotiations process is identical with the IPv4 network.
And multicast services is set up the function that module can realize and mainly contained: multicast is set up, multicast adds, multicast leaves, multicast is deleted several situations.Can describe in conjunction with Fig. 5.
Multicast is set up: BS equipment is intercepted the message (step 500) that transmits between main frame and the router, judges whether it is IGMP report message (step 510); In this way, then according to the multicast in the message number (step 520); Whether the multicast address in the query facility of mat exists this multicast group in transmitting, and judges whether it is new multicast group (step 530); If there is no, then need to create a multicast group and transmit, adding source SS facility information in this multicast group is transmitted distributes a new CID, and the outlet during multicast group is transmitted is set to this CID (step 540); Receive this CID message by notice of settlement source SS equipment.The message of this multicast group then send (step 550) if receive by this CID from network side.
Multicast adds: BS equipment is intercepted the message (step 500) that transmits between main frame and the router, judge whether it is IGMP report message (step 510), in this way, then according to the multicast in the message number (step 520), whether the multicast address in the query facility of mat exists this multicast group in transmitting, and judges whether it is new multicast group (step 530), if exist, only need in table, to add source SS facility information, obtain exporting CID (step 545); Receive this CID message by notice of settlement source SS equipment.If receive this multicast group message from network side, then send (step 550) by this CID.
Multicast leaves: BS equipment is intercepted the message (step 500) that transmits between main frame and the router, if it is not an IGMP report message (step 510); Judge then whether it is IGMP leave message (step 515), if the message that BS equipment is received is an IGMP leave message, then transmit according to the multicast address in the inquiry of the multicast group number in this IGMP leave message BS equipment, delete this multicast address and transmit middle source SS facility information, obtain exporting cid information, notice of settlement source SS equipment does not receive this CID message (step 525).And judge that whether this multicast address also has SS equipment (step 535) in transmitting, if having, does not then handle.Still send the message of this multicast group if receive by this CID from network side.
The multicast deletion: BS equipment is intercepted the message (step 500) that transmits between main frame and the router, if it is not an IGMP report message (step 510); Judge then whether it is IGMP leave message (step 515), if the message that BS equipment is received is an IGMP leave message, then transmit according to the multicast address in the inquiry of the multicast group number in this IGMP leave message BS equipment, delete this multicast address and transmit middle source SS facility information, obtain exporting cid information, notice of settlement source SS equipment does not receive this CID message (step 525).And judge whether this multicast address also has SS equipment (step 535) in transmitting, if do not have, then deletes multicast address and transmits, and reclaims CID (step 560).Then abandon the message of this multicast group if receive from network side.
As shown in Figure 6, be the schematic flow sheet of the igmp proxy among the present invention.The IGMP snooping that is disclosed among itself and Fig. 5 has a lot of similarities.It also includes that multicast is set up, multicast adds, multicast leaves and step such as multicast deletion.
Wherein, multicast is set up: the message (step 600) that transmits between BS equipment interception main frame and the router, judge whether it is IGMP report message (step 610); In this way, then according to the multicast in the message number (step 620); Whether the multicast address in the query facility of mat exists this multicast group in transmitting, and judges whether it is new multicast group (step 630); If there is no, then need to create a multicast group and transmit, adding source SS facility information in this multicast group is transmitted distributes a new CID, and the outlet during multicast group is transmitted is set to this CID (step 640); Send this IGMP report message (step 660) to router, receive this CID message (step 670) by notice of settlement source SS equipment.
Multicast adds: the message (step 600) that transmits between BS equipment interception main frame and the router, judge whether it is IGMP report message (step 610); In this way, then according to the multicast in the message number (step 620); Whether the multicast address in the query facility of mat exists this multicast group in transmitting, and judges whether it is new multicast group (step 630); If exist, only need in table, to add source SS facility information, obtain exporting CID (step 650); Receive this CID message by notice of settlement source SS equipment.If receive this multicast group message from network side, then send (step 670) by this CID.
Multicast leaves: the message (step 600) that transmits between BS equipment interception main frame and the router, if it is not an IGMP report message (step 610); Judge then whether it is IGMP leave message (step 615), if the message that BS equipment is received is an IGMP leave message, then transmit according to the multicast address in the inquiry of the multicast group number in this IGMP leave message BS equipment, delete this multicast address and transmit middle source SS facility information, obtain exporting cid information, notice of settlement source SS equipment does not receive this CID message (step 625).And judge that whether this multicast address also has SS equipment (step 635) in transmitting, if having, does not then handle.
The multicast deletion: the message (step 600) that transmits between BS equipment interception main frame and the router, if it is not an IGMP report message (step 610); Judge then whether it is IGMP leave message (step 615), if the message that BS equipment is received is an IGMP leave message, then transmit according to the multicast address in the inquiry of the multicast group number in this IGMP leave message BS equipment, delete this multicast address and transmit middle source SS facility information, obtain exporting cid information, notice of settlement source SS equipment does not receive this CID message (step 625).And judge whether this multicast address also has SS equipment (step 635) in transmitting, if do not have, then deletes multicast address and transmits, and reclaims CID (step 645).And send IGMP leave message (step 655) to router and then abandon the message of this multicast group if receive from network side.
If BS equipment is tackled to such an extent that be the query message (step 665) of router IGMP, then BS equipment can send IGMP response message (step 675) to the road device.
From foregoing description as can be seen, BS equipment utilization of the present invention IGMP snooping module or igmp proxy module (for IPv4) in it.The IGMP message that transmits between main frame and the router can be intercepted or tackle to BS equipment, and safeguard that according to the type (as igmp querying message, IGMP report message or IGMP leave message) of IGMP message multicast group transmits.
BS equipment is transmitted according to multicast group, sets up descending multicast services according to 802.16 (WiMAX) broadband wireless access standard code.BS equipment is given all SS distribution identical CID (this CID is not had specific (special) requirements) in the multicast group, and the SS in the multicast group can not know that this CID is used for multicast link, only need know: the data by this CID transmission need identification of MAC layer and processing.So just can realize multicast services at all SS in this multicast group.The main frame in multicast group can not received multicast message, reduce the SS power consumption, and guarantee fail safe.Do not need BS equipment to do complicated multicast in addition and comprise replication work, and saved the bandwidth of air-interface resource.
Claims (11)
1, a kind of base station in BWA, it is connected with router and a plurality of subscriber station, it is characterized in that, comprising:
Be used for the intercepting module or be used to tackle message proxy module between subscriber station and the router of message between listen for user station and the router;
Multicast address is transmitted maintenance module, is used for setting up and safeguarding that multicast address transmits according to the type of the message of intercepting or tackling;
Multicast services is set up module, multicast forwarding Executive Module, and it is that all subscriber stations in the multicast group distribute an identical connection identifier, according to the adding of this connection identifier management group subscriber station or leave, maintenance customer's data, and send multicast packet to subscriber station.
2, the base station at wireless access system according to claim 1, it is characterized in that, the described module of intercepting is that the MLD that is used for the IGMP snooping module of IPv4 or is used for the IPv6 network intercepts module, and described proxy module is the MLD proxy module that is used for the igmp proxy module of IPv4 or is used for IPv6.
3, the base station at wireless access system according to claim 1 and 2, it is characterized in that the message that described IGMP snooping module and igmp proxy module are intercepted or tackled comprises igmp querying message from router, from the IGMP report message and the IGMP leave message of subscriber station.
4, according to claim 3ly it is characterized in that in the base station of wireless access system the igmp querying message is intercepted or intercepted to described IGMP snooping module and igmp proxy module, can determine the port of the base station equipment that links to each other with router; Described IGMP snooping module and igmp proxy module are intercepted the IGMP report message, judge whether port is added multicast group according to the port and the group in the report message that receive the IGMP report, and perhaps newly-built multicast group is transmitted; Described IGMP snooping module and igmp proxy module are intercepted IGMP leave message, and it sends a group-specific query message to the port that receives this IGMP leave message, whether also have the member of this multicast group to confirm this port.
5, the base station at wireless access system according to claim 2, it is characterized in that described MLD intercepts the message that module and MLD proxy module intercept or tackle and comprises that group membership query messages, group membership report message and group membership reduce message packet.
6, a kind of method that realizes multicast service in BWA is characterized in that, comprising:
(a) base station equipment utilizes the module proxy module of intercepting in it to intercept or tackle the message that transmits between subscriber station and router;
(b) according to the type of the message of intercepting or tackling safeguard that multicast address transmits;
(c) transmit according to multicast address and distribute an identical connection identifier to set up multicast services between base station and the subscriber station for all subscriber stations in the multicast group by base station equipment.
7, the method that in BWA, realizes multicast service according to claim 6, it is characterized in that, the described module of intercepting is that the MLD that is used for the IGMP snooping module of IPv4 or is used for the IPv6 network intercepts module, and described proxy module is the MLD proxy module that is used for the igmp proxy module of IPv4 or is used for IPv6; The described message that between subscriber station and router, transmits, for the IPv4 network, this message is igmp querying message, IGMP report message or IGMP leave message; For the IPv6 network, this message is that group membership query messages, group membership report message or group membership reduce message packet.
8, the method that realizes multicast service in BWA according to claim 7 is characterized in that, further comprises multicast foundation:
The IGMP report message that transmits between main frame and the router is intercepted or tackled to base station equipment;
Whether there is this multicast group in transmitting according to the multicast address in the multicast query facility in this IGMP report message;
If there is not this multicast group during multicast address is transmitted, create a multicast group and transmit, in transmitting, this multicast group adds source user station equipment information, distribute a new connection identifier, and the outlet of multicast group in transmitting is set to this connection identifier;
The notification source customer station equipment receives the message of this connection identifier.
9, the method that realizes multicast service in BWA according to claim 7 is characterized in that, comprises that further multicast adds:
The IGMP report message that transmits between main frame and the router is intercepted or tackled to base station equipment;
Whether there is this multicast group in transmitting according to the multicast address in the multicast query facility in this IGMP report message;
If there is this multicast group during multicast address is transmitted, then in transmitting, this multicast address adds source user station equipment information, obtain the outlet connection identifier;
The notification source customer station equipment receives the message of this connection identifier.
10, the method that realizes multicast service in BWA according to claim 7 is characterized in that, comprises that further multicast leaves:
The leave message that transmits between subscriber station and the router is intercepted or tackled to base station equipment;
Transmit according to the multicast address in the inquiry of the multicast group number in this IGMP leave message base station equipment, and delete this multicast address and transmit middle source user station equipment information, obtain outlet connection identifier information;
The notification source customer station equipment does not receive the message of this connection identifier;
Judge that whether this multicast address also has customer station equipment in transmitting, if having, does not then handle;
Send the message of this multicast group if receive by this connection identifier from network side.
11, the method that realizes multicast service in BWA according to claim 7 is characterized in that, further comprises the multicast deletion:
The leave message that transmits between subscriber station and the router is intercepted or tackled to base station equipment;
Transmit according to the multicast address in the inquiry of the multicast group number in this IGMP leave message base station equipment, and delete this multicast address and transmit middle source user station equipment information, obtain outlet connection identifier information;
The notification source customer station equipment does not receive the message of this connection identifier;
Judge whether this multicast address also has customer station equipment in transmitting, if do not have, the deletion multicast address is transmitted, and reclaims connection identifier;
Then abandon the message of this multicast group if receive from network side.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101014360A CN100479433C (en) | 2005-11-14 | 2005-11-14 | Base station in wide-band wireless access-in system and method for realizing multi-cast business |
| PCT/CN2006/002677 WO2007054006A1 (en) | 2005-11-14 | 2006-10-12 | A base station of wideband wireless access system and a method for realizing group-broadcast service |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101014360A CN100479433C (en) | 2005-11-14 | 2005-11-14 | Base station in wide-band wireless access-in system and method for realizing multi-cast business |
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| CN1852231A true CN1852231A (en) | 2006-10-25 |
| CN100479433C CN100479433C (en) | 2009-04-15 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2009003407A1 (en) * | 2007-07-03 | 2009-01-08 | Huawei Technologies Co., Ltd. | Method and system of acquiring media data in the application layer multicast network |
| WO2010022574A1 (en) * | 2008-08-29 | 2010-03-04 | 中兴通讯股份有限公司 | A method and apparatus for realizing forwarding the reversal transmission path of the unique address |
| CN101335907B (en) * | 2007-06-29 | 2011-04-06 | 上海贝尔阿尔卡特股份有限公司 | Method and apparatus for controlling multicast service transmission in base station |
| CN102223286A (en) * | 2010-04-16 | 2011-10-19 | 华为技术有限公司 | Method, exchange equipment and system for realizing multicast forwarding |
| CN111371488A (en) * | 2020-03-13 | 2020-07-03 | 北京邮电大学 | Content data transmission method and device and electronic equipment |
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| CN103379443B (en) * | 2012-04-20 | 2017-05-10 | 中兴通讯股份有限公司 | Method and system for keeping multicast services continuous |
| CN104349282B (en) * | 2013-08-05 | 2018-03-30 | 成都鼎桥通信技术有限公司 | A kind of broadcasting service implementation method in LTE system |
| CN111225241B (en) * | 2019-12-30 | 2023-07-28 | 视联动力信息技术股份有限公司 | Communication method and device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1192576C (en) * | 2002-02-09 | 2005-03-09 | 华为技术有限公司 | Multicast business realizing method in mobile network |
| JP3999061B2 (en) * | 2002-07-05 | 2007-10-31 | 株式会社エヌ・ティ・ティ・ドコモ | Node device, terminal device, program, and recording medium |
| CN1175626C (en) * | 2002-12-16 | 2004-11-10 | 北京朗通环球科技有限公司 | Method for realizing access controller function on radio access point |
-
2005
- 2005-11-14 CN CNB2005101014360A patent/CN100479433C/en not_active Expired - Fee Related
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2006
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101335907B (en) * | 2007-06-29 | 2011-04-06 | 上海贝尔阿尔卡特股份有限公司 | Method and apparatus for controlling multicast service transmission in base station |
| WO2009003407A1 (en) * | 2007-07-03 | 2009-01-08 | Huawei Technologies Co., Ltd. | Method and system of acquiring media data in the application layer multicast network |
| WO2010022574A1 (en) * | 2008-08-29 | 2010-03-04 | 中兴通讯股份有限公司 | A method and apparatus for realizing forwarding the reversal transmission path of the unique address |
| US8437354B2 (en) | 2008-08-29 | 2013-05-07 | Zte Corporation | Method and apparatus for realizing unicast reverse path forwarding |
| CN102223286A (en) * | 2010-04-16 | 2011-10-19 | 华为技术有限公司 | Method, exchange equipment and system for realizing multicast forwarding |
| WO2011127823A1 (en) * | 2010-04-16 | 2011-10-20 | 华为技术有限公司 | Method for implementing multicast forwarding, switch device and system thereof |
| US9054984B2 (en) | 2010-04-16 | 2015-06-09 | Huawei Technologies Co., Ltd. | Method, switching device and system for enabling multicast forwarding |
| CN111371488A (en) * | 2020-03-13 | 2020-07-03 | 北京邮电大学 | Content data transmission method and device and electronic equipment |
| CN111371488B (en) * | 2020-03-13 | 2021-07-02 | 北京邮电大学 | Content data transmission method and device and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100479433C (en) | 2009-04-15 |
| WO2007054006A8 (en) | 2007-07-19 |
| WO2007054006A1 (en) | 2007-05-18 |
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