CN100505631C - Multicast processing method in the GPON system - Google Patents
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Abstract
The invention discloses a multicast processing method of GPON system, the method includes the following steps: after the ONT of user side registered to the OLT of Office side, create the multicast service channel between the OLT end and ONT end, the ONT shall forward the multicast service request of terminal UE to the OLT; the OLT may package the multicast information concerning with this multicast service request according to the multicast service request, on the multicast service channel, return the multicast service and the multicast information to the UE through the ONT. The invention may really realize the multicast processing in the GPON system.
Description
Technical field
The present invention relates to the multicast treatment technology, relate in particular to the multicast processing method in a kind of Gigabit Passive Optical Network (GPON, Gigabit-capable Passive Optical Networks) system.
Background technology
Network element device in the GPON system comprises: optical line terminal (OLT), optical network unit (ONU), Optical Network Terminal (ONT).Wherein, OLT is office's side apparatus, and ONU and ONT are the user side terminal equipment, and OLT and ONT/ONU are connected to form the GPON system.Usually, in the GPON system, an OLT links to each other with a plurality of ONU/ONT.
The data service that the user clicks can be transmitted by clean culture, broadcasting and multicast on network.Wherein, multicast is a kind of method of the transmission of deal with data efficiently.Though the GPON system itself has the characteristic of supporting multicast,, therefore present technical scheme how not handle multicast in the GPON system, can't utilize this characteristic of GPON system, improves the efficient of data traffic transmission.
Summary of the invention
In view of this, technical problem to be solved by this invention is to provide the multicast processing method in a kind of GPON system, can handle by the specific implementation multicast in the GPON system.
For achieving the above object, technical scheme of the present invention is achieved in that
Multicast processing method in a kind of GPON system, this method may further comprise the steps:
After the ONT of A, user side is registered to the OLT of innings side, between OLT end and ONT end, set up multicast service channel;
B, described ONT are transmitted to described OLT with the multicast service request of terminal UE;
C, described OLT encapsulate the multicast information relevant with this multicast service request according to described multicast service request, on described multicast service channel, described multicast service and described multicast information are returned to described UE via described ONT,
Wherein, among the step C described multicast service and described multicast information being returned to described UE via described ONT further is:
C1, according to the multicast information in the filter table, after the multicast service that transmits on the multicast service channel filtered, described OLT returned to described UE with described multicast service and described multicast information via described ONT again.
Wherein, described multicast information comprises: the port identification information of multicast ip address information, multicast mac address information, described ONT and the identification information of described UE.
Wherein, the multicast service filter table is set, then also comprises step among the step C1 at described OLT end:
Described OLT verifies the legitimacy of described multicast service request, by the multicast information of preserving in the described multicast service filter table, described multicast service is filtered, and search with described multicast service filter table multicast information in the corresponding multicast service of legal multicast ip address information, only legal multicast service is returned to described UE via described ONT.
Wherein, in described ONT end inlet porting filter table, then also comprise step among the step C1:
After described ONT receives described multicast service and described multicast information, by the multicast information of preserving in the described ingress filtering table, described multicast service is filtered, and the corresponding multicast service of multicast ip address information in acceptance and the described ingress filtering table multicast information, abandon other multicast services; The multicast service of accepting is returned to described UE.
Wherein, the egress filtering table is set, then also comprises step among the step C1 at described ONT end:
After described ONT receives described multicast service and described multicast information, by the multicast information of preserving in the described egress filtering table, described multicast service is filtered, and search with described egress filtering table multicast information in user-side port information and the corresponding multicast service of UE information of ONT, the multicast service of described correspondence is returned to described UE from the user-side port of described ONT.
Wherein, at described ONT end inlet porting filter table and egress filtering table, then step C1 is specially:
C11, at the port of described ONT side, receive described multicast service and described multicast information after, accept with ingress filtering table multicast information in the corresponding multicast service of multicast ip address information, abandon other multicast services; The multicast service of accepting is sent to the port of described ONT user side;
C12, at the port of described ONT user side, search with egress filtering table multicast information in user-side port information and the corresponding multicast service of UE information of ONT, the multicast service of described correspondence is returned to described UE from described ONT user-side port.
Wherein, the multicast service filter table is set, then also comprises step among the step C1 at described OLT end:
Described OLT verifies the legitimacy of described multicast service request, search with described multicast service filter table multicast information in the corresponding multicast service of legal multicast ip address information, only legal multicast service is returned to described UE via described ONT.
Wherein, described OLT is provided with ingress filtering table and the egress filtering table of described ONT with static mode or dynamical fashion.
Wherein,
Described multicast service channel is one, transfers to few described multicast service on described multicast service channel; Perhaps,
Described multicast service channel is at least one, described multicast service of transmission on described multicast service channel.
Wherein, among the step C described multicast service and described multicast information being returned to described UE via described ONT further is:
After the multicast service that the described multicast service channel of holding ONT end from OLT is transmitted was encrypted, described OLT returned to described UE with described multicast service and described multicast information via described ONT again.
Wherein, described cryptographic operation is specially:
On described OLT, generate key, and specify reliable ONT; Described key is sent to described reliable ONT; After described ONT receives described key, the multicast packets that receives of deciphering, and receiving group bag correctly.
The present invention utilizes the GPON system itself to have the characteristic of supporting multicast, that is: multicast packets of permission is disposable, and all ONT all can correctly be received, and between the ONT of the OLT of office's side and user side, set up multicast service channel, this multicast service channel is used to send multicast service to ONT, thereby, adopt the present invention in the GPON system, to handle by the specific implementation multicast.
And then, the present invention adopts static state or/and dynamical fashion is provided with the multicast service filter table at the OLT of office's side, in the ONT of user side inlet porting filter table or/and the egress filtering table, to the filtration control that the multicast service that transmits on the multicast service channel and the multicast information relevant with multicast service carry out different stage, improved the efficient of multicast service transmission.Simultaneously, also can adopt cipher mode that multicast is handled, improve the fail safe of multicast service transmission, avoid the receiving multicast business of the ONT malice of malice.
Description of drawings
Fig. 1 is a multicast processing method flow chart of the present invention;
Fig. 2 is the multicast processing method flow chart of three grades of controls of employing of the embodiment of the invention.
Embodiment
Core concept of the present invention is: utilize the GPON system itself to have to support the characteristic of multicast, set up multicast service channel between the ONT of the OLT of office's side and user side, this multicast service channel is used to send multicast service to ONT.Adopt the present invention in the GPON system, to handle by the specific implementation multicast, improved the efficient of data traffic transmission.
Be described in further detail below in conjunction with the enforcement of accompanying drawing technical scheme.
As shown in Figure 1, multicast processing method of the present invention comprises:
After the ONT of step 101, user side is registered to the OLT of innings side, between OLT end and ONT end, set up multicast service channel.
Method for packing to the The data transmitted in the GPON system comprises: GPON method for packing (GEM, G-PON Encapsulation Method) and asynchronous transfer mode (ATM, Asynchronous TransferMode) method for packing.For GEM, the port of encapsulation back transfer of data is: the GEM port.For the ATM method for packing, there is two types connected mode in ATM, and when the Virtual Channel of setting up ATM connected, encapsulation back transfer of data was on Virtual Channel; When the virtual path of setting up ATM connected, encapsulation back transfer of data was on virtual path.Virtual path is the set that is made of a lot of Virtual Channels.
At first, set up one according to the GEM method for packing at the OLT end and be specifically designed to the GEM port-mark that transmits multicast; Then, set up a same GEM port-mark (GEM PORTID at each ONT end, GEM Port Identifier), adopt multicast GEM interconnection destination node (Multicast GEMInterworking Termination Point) connected mode, finally, between OLT end and ONT end, set up multicast service channel,, and on this multicast service channel, only handle unidirectional descending multicast service by each multicast service channel of GEM port-mark unique identification.
Also can adopt the ATM method for packing, between OLT end and ONT end, set up multicast service channel, employed step is the same with employing GEM method for packing, different is: in OLT end and the foundation of each ONT end is VCI (VPI, Virtual Path Identifier)/VPI (VCI, VirtualChannel Identifier), what adopt is multicast interconnection VCC destination node (Multicast interworking VCCtermination point) connected mode, by each multicast service channel of VPI/VCI unique identification.
Wherein, described multicast information comprises: the port identification information of multicast ip address information, multicast mac address information, described user side ONT and the identification information of described UE.
Based on above-mentioned principle, when described multicast service channel is one, the one or more multicast services of transmission on this multicast service channel; When described multicast service channel when being a plurality of, multicast service of transmission on multicast service channel therein.
In the step 103 described multicast service and described multicast information being returned to described UE via described ONT further is:
Step 1031, according to the multicast information in the filter table, after the multicast service that transmits on the multicast service channel and multicast information filtered, described OLT returned to described UE with described multicast service and described multicast information via described ONT again.
Wherein, consider that multicast processing procedure in the GPON system to the demand difference of time and efficient, can adopt the filtration control of different stage according to the control granule size of port to multicast service.Such as, when the control fineness ratio of the PON of OLT side (EPON) port is big, can take one-level control, at this moment, the multicast processing procedure is simple relatively; When the control fineness ratio of the PON of ONT user side port hour, can take three grades of controls, at this moment, multicast processing procedure relative complex; And at the filtration control of the PON port of ONT side between above-mentioned two kinds of situations, can take secondary control.Such as, can adopt a kind of filter table is set carries out one-level control, adopt two kinds of filter table are set carry out secondary control, also can adopt three kinds of filter table are set carry out three grades of controls.
For instance, one-level control comprises: at described OLT end the multicast service filter table is set, whether control send to described ONT with multicast service from the PON port of OLT side; In described ONT end inlet porting filter table, whether control receives certain multicast service that sends from described OLT at the PON of ONT side port; Or the egress filtering table is set at described ONT end, whether control allows certain multicast service to send to described UE from the PON port of ONT user side.
Secondary control comprises: at described ONT end inlet porting filter table and egress filtering table; The multicast service filter table is set and holds the inlet porting filter table at described OLT end at described ONT; The multicast service filter table is set and the egress filtering table is set at described OLT end at described ONT end.
Three grades of controls comprise: at described ONT end and described ONT end filter table is set simultaneously, and promptly in ONT end inlet porting filter table, simultaneously, at ONT end inlet porting filter table and egress filtering table.The information that comprises in the above-mentioned filter table is mainly: the multicast information that allows which multicast address to pass through, such as, multicast ip address information.
Specifically, adopt following several technical schemes can realize the filtration control of different stage.And the step 101 in each technical scheme～102 are all the same, and difference only is in the concrete execution of step 1031.
When at the OLT end multicast service filter table being set, then step 1031 is specially:
Described OLT verifies the legitimacy of described multicast service request, by the multicast information of preserving in the multicast service filter table that is provided with at this OLT end, described multicast service is filtered, and search with multicast service filter table multicast information in the corresponding multicast service of legal multicast ip address information, only legal multicast service is returned to described UE via described ONT.In fact the checking of legitimacy is equivalent to a scope check.Draw an analogy, the legal employee of a company, different people has different authorities, has the people of different rights, and the operation difference that can carry out if request conforms to authority, is then passed through legitimate verification; Otherwise, the legitimate verification failure.
When holding the inlet porting filter table at ONT, then step 1031 is specially:
After described ONT receives described multicast service and described multicast information, by the multicast information of preserving in the described ingress filtering table, described multicast service is filtered, and the corresponding multicast service of multicast ip address information in acceptance and the ingress filtering table multicast information, abandon other multicast services; The multicast service of accepting is returned to described UE.
When at the ONT end egress filtering table being set, then step 1031 is specially:
After described ONT receives described multicast service and described multicast information, by the multicast information of preserving in the described egress filtering table, described multicast service is filtered, and search with egress filtering table multicast information in user-side port information and the corresponding multicast service of UE information of ONT, the multicast service that this is corresponding returns to this UE from the user-side port of this ONT.
When holding the multicast service filter table is set, and at ONT end inlet porting filter table and egress filtering table, then step 1031 is concrete handles as shown in Figure 2 at OLT:
Step 1031b, at the port of described ONT side, receive described multicast service and described multicast information after, accept with ingress filtering table multicast information in the corresponding multicast service of multicast ip address information, abandon other multicast services; The multicast service of accepting is sent to the port of this ONT user side.
Step 1031c, at the port of described ONT user side, search with egress filtering table multicast information in user-side port information and the corresponding multicast service of UE information of ONT, the multicast service that this is corresponding returns to this UE from this ONT user-side port.
In above-mentioned each technical scheme, by forwarding multicasting information on multicast service channel, described OLT can be provided with dynamical fashion described multicast service filter table, described ingress filtering table and described egress filtering table.So-called dynamical fashion refers to: can dynamically carry out the retouching operation that adds, deletes and upgrade operation according to the multicast information of transmitting on multicast service channel.Described OLT also can be provided with described multicast service filter table, described ingress filtering table and described egress filtering table with static mode, such as, directly by manual these tables that is provided with of webmaster.
In the described step 103 described multicast service and described multicast information being returned to described UE via described ONT further is:
After the multicast service that the described multicast service channel of holding ONT end from OLT is transmitted was encrypted, described OLT returned to described UE with described multicast service and described multicast information via described ONT again.
Embodiment one is: when multicast service channel is one, the one or more described multicast services of transmission on this multicast service channel, and the data of transmission are taked the situation of GEM method for packing, and then the multicast processing method in the GPON of present embodiment system may further comprise the steps:
Step 201, after each ONT of user side is registered to the OLT of innings side, create multicast automatically by the OLT in the GPON system and connect, that is: the OLT end with set up an identical multicast service channel between ONT holds.
Wherein, in the OLT side, because, The data GEM form to transmission encapsulates, therefore, need to specify a GEM port-mark, the descending multicast packets that this GEM port-mark is used for being made of multicast service and multicast information is encapsulated into the multicast service channel that this GEM port-mark is identified.Because being defined in this GEM port-mark does not have up Business Stream, therefore, can only handle the multicast packets of down direction, does not need to handle up direction.
In the ONT side, need to create a unidirectional GEM port-mark, and this GEM port-mark is a down direction.Concrete creation method is: at first, adopt GEM port network destination point (GEM PortNetwork CTP), and the direction attribute is set to descending unidirectionally, that is: inserts the network interface direction of the network interface of OLT side to the ONT user side; Then, create relevant Multicast GEM InterworkingTermination Point again and set up a unidirectional multicast connection.
Step 202, ONT are with the adding of terminal UE or leave multicast service request and be transmitted to OLT.
Step 203, after having created descending multicast service channel, according to multicast service request, OLT is in the multicast address (MulticastAddressTable) of describing Multicast GEM Interworking Termination Point attribute, that is: in the multicast service filter table, add some records, that is: legal multicast ip address information.
Step 204, described OLT verify the legitimacy of described multicast service request, search with multicast service filter table multicast information in the corresponding multicast service of legal multicast ip address information, on multicast service channel, only will this legal multicast service and multicast information send to the port of described ONT side; And, only allow descending legal protocol package such as multicast inquiry to pass through, do not allow other any business packet to pass through.
Specifically, when certain PON port of OLT side is received the multicast service request of the UE adding of being transmitted by certain ONT, its legitimacy is verified, if legal request, this record is added in the local multicast service filter table, and permission simultaneously is forwarded to this multicast service and multicast information this PON port of OLT side; Notify this ONT that its ingress filtering table and egress filtering table are set.
When what receive is when joining request, and notice ONT is provided with filter table and is specially: add this and record in ingress filtering table and egress filtering table of describing Multicast GEM Interworking Termination Point attribute.In the egress filtering table that specifically adds which user side relevant to ONT, can realize with reference to following mode, up multicast protocol bag receives from the port of which ONT user side, just operate the egress filtering table of this user-side port, here, on ONT, this multicast service will be allowed to transmit.
When certain PON port of OLT side is received the multicast service request that the UE that transmitted by certain ONT leaves, its legitimacy is verified, if legal request, this record is deleted from the multicast service filter table of this locality, and, allow simultaneously this multicast service and multicast information are forbidden being forwarded to this PON port of OLT side; Notify this ONT that its ingress filtering table and egress filtering table are set.
When what receive is when leaving request, notice ONT is provided with filter table and is specially: this record of deletion from the ingress filtering table of describing MulticastGEM Interworking Termination Point attribute and egress filtering table, here, on ONT, will directly abandon this multicast service.
Because the PON port of OLT side and the relation that ONT is one-to-many, therefore, be not that the adding/request of leaving of each ONT all can cause actual adding/leave operation.If work as the adding that certain PON port of OLT side is received first UE under this PON mouth of certain ONT forwarding, then multicast service and multicast information be forwarded to this PON mouth; If last UE leaves this PON mouth, forbid that then forwarding multicasting business and multicast information are to this PON mouth.
In step 204, also comprise and upgrade operation:
When ONT receives OLT when dynamically arranging the notice of the ingress filtering table of describing Multicast GEM Interworking TerminationPoint attribute, upgrade this ingress filtering table at once, filter simultaneously and come into force at once; Same, when ONT receives OLT when dynamically arranging the notice of egress filtering table of ONT user side, also upgrade this egress filtering table at once, filter simultaneously and come into force at once.
Step 205, at the port of described ONT side, after receiving described multicast service and described multicast information, the corresponding multicast service of multicast ip address information in acceptance and the ingress filtering table multicast information, abandon other multicast services, promptly only in the ingress filtering table of describing Multicast GEM Interworking Termination Point attribute, exist the multicast service of multicast ip address information just can accept, otherwise directly abandon; The multicast service of accepting is sent to the port of this ONT user side.
Step 206, because whether the multicast for ONT receives can send from the port of ONT user side, also needs to check its egress filtering table, only the multicast of allow transmitting in this filter table just allows to send, otherwise directly abandons in ONT inside.
Therefore, at the port of described ONT user side, need search with egress filtering table multicast information in user-side port information and the corresponding multicast service of UE information of ONT, this multicast service is returned to this UE from this user-side port.
Step 207, descending multicast service is encrypted, had only reliable ONT can get access to encryption key, and final correct this multicast service that obtains.
Wherein, this encrypting step is specially:
At first, generate key on OLT, and specify reliable ONT, then, key is sent to these reliable ONT, after ONT received key, this ONT just can decipher the multicast packets that receives, and receiving group bag correctly.
And, when OLT sends to ONT with key, be that the passage of the GEM port-mark encrypted separately by each ONT transmits, like this, have only the ONT that has specified just can obtain key, and correct receiving group bag.
For the safety of key, at the OLT end timer can be set and regularly change key, the frequency of replacing and replacing are initiatively initiated by OLT constantly.Such as, at first, OLT can carry out cipher key change with all ONT, and after all ONT key updating success, then, OLT initiates cipher key change constantly again, begins to enable new key at certain frame of appointment.For firm adding GPON system, also do not obtain the reliable ONT of key, then current key is sent to this ONT.
In addition, principle based on embodiment one, OLT also can adopt static mode, such as, can multicast service table, ingress filtering table and egress filtering table that describe Multicast GEM Interworking Termination Point attribute directly be set by webmaster in the OLT side, finish interpolation, deletion, renewal operation writing down in the described table.
Embodiment two is: when multicast service channel is one, the one or more described multicast services of transmission on this multicast service channel, and the data to transmission are taked under the situation of ATM method for packing, based on the step among the embodiment one, also can realize the multicast of GPON system is handled, different is:
In the step 301, in the OLT side, need to specify a VPI/VCI, the descending multicast packets that is used for being made of multicast service and multicast information is encapsulated into this VPI/VCI;
In the ONT side, need to create a unidirectional down direction VPIVCI, and this VPI/VCI is a down direction.Concrete creation method is: at first, adopt virtual path port network destination point (VP NetworkCTPB-PON)/Virtual Channel port network destination point (VC Network CTPB-PON), and its direction attribute is set to descending unidirectionally, inserts the network interface direction of the network interface of OLT side to the ONT user side that is:; Then, create relevant Multicast interworking VCC termination point again and set up a unidirectional multicast connection.
In the step 303, after having created descending multicast service channel, in the multicast address (MulticastAddressTable) of describing Multicast interworkingVCC termination point attribute, that is: in the multicast service filter table, add some records, only can allow descending legal protocol package such as multicast inquiry pass through, not allow other any business packet to pass through.
In the step 304, be when joining request when what receive, OLT notice ONT is provided with filter table and is specially: add this and record in ingress filtering table and egress filtering table of describing Multicast interworking VCC termination point attribute; When what receive is to leave when request, and OLT notice ONT is provided with filter table and is specially: this record of deletion from the ingress filtering table of describing Multicast interworking VCC termination point attribute and egress filtering table.
The renewal that comprises in step 304 is operating as:
When ONT receives OLT when dynamically arranging the notice of the ingress filtering table of describing Multicast interworking VCC terminationpoint attribute, upgrade this ingress filtering table at once, filter simultaneously and come into force at once; Same, when ONT receives OLT when dynamically arranging the notice of egress filtering table of ONT user side, also upgrade this egress filtering table at once, filter simultaneously and come into force at once.
In the step 305, only in the ingress filtering table of describing Multicast interworking VCC termination point attribute, exist the multicast service of multicast ip address information just can accept, otherwise directly abandon.
In the step 306, on ONT, receive OLT when dynamically arranging the notice of the ingress filtering table of describing Multicast interworkingVCC termination point attribute, upgrading this table at once filters simultaneously and comes into force at once, same when receiving the notice of the interface filter table that its user side is set, also upgrade this table at once and filter simultaneously and come into force at once.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (11)
1, the multicast processing method in a kind of GPON system is characterized in that this method may further comprise the steps:
After the ONT of A, user side is registered to the OLT of innings side, between OLT end and ONT end, set up multicast service channel;
B, described ONT are transmitted to described OLT with the multicast service request of terminal UE;
C, described OLT encapsulate the multicast information relevant with this multicast service request according to described multicast service request, on described multicast service channel, described multicast service and described multicast information are returned to described UE via described ONT,
Wherein, among the step C described multicast service and described multicast information being returned to described UE via described ONT further is:
C1, according to the multicast information in the filter table, after the multicast service that transmits on the multicast service channel filtered, described OLT returned to described UE with described multicast service and described multicast information via described ONT again.
2, method according to claim 1 is characterized in that, described multicast information comprises: the port identification information of multicast ip address information, multicast mac address information, described ONT and the identification information of described UE.
3, method according to claim 1 is characterized in that, at described OLT end the multicast service filter table is set, and then step C1 is specially:
Described OLT verifies the legitimacy of described multicast service request, by the multicast information of preserving in the described multicast service filter table, described multicast service is filtered, and search with described multicast service filter table multicast information in the corresponding multicast service of legal multicast ip address information, only legal multicast service is returned to described UE via described ONT.
4, method according to claim 1 is characterized in that, in described ONT end inlet porting filter table, then also comprises step among the step C1:
After described ONT receives described multicast service and described multicast information, by the multicast information of preserving in the described ingress filtering table, described multicast service is filtered, and the corresponding multicast service of multicast ip address information in acceptance and the described ingress filtering table multicast information, abandon other multicast services; The multicast service of accepting is returned to described UE.
5, method according to claim 1 is characterized in that, at described ONT end the egress filtering table is set, and then also comprises step among the step C1:
After described ONT receives described multicast service and described multicast information, by the multicast information of preserving in the described egress filtering table, described multicast service is filtered, and search with described egress filtering table multicast information in user-side port information and the corresponding multicast service of UE information of ONT, the multicast service of described correspondence is returned to described UE from the user-side port of described ONT.
6, method according to claim 1 is characterized in that, at described ONT end inlet porting filter table and egress filtering table, then also comprises step among the step C1:
C11, at the port of described ONT side, receive described multicast service and described multicast information after, accept with ingress filtering table multicast information in the corresponding multicast service of multicast ip address information, abandon other multicast services; The multicast service of accepting is sent to the port of described ONT user side;
C12, at the port of described ONT user side, search with egress filtering table multicast information in user-side port information and the corresponding multicast service of UE information of ONT, the multicast service of described correspondence is returned to described UE from described ONT user-side port.
7, according to claim 4,5 or 6 described methods, it is characterized in that, the multicast service filter table be set, then also comprise step among the step C1 at described OLT end:
Described OLT verifies the legitimacy of described multicast service request, search with described multicast service filter table multicast information in the corresponding multicast service of legal multicast ip address information, only legal multicast service is returned to described UE via described ONT.
8, method according to claim 7 is characterized in that, described OLT is provided with ingress filtering table and the egress filtering table of described ONT with static mode or dynamical fashion.
9, method according to claim 1 is characterized in that,
Described multicast service channel is one, transfers to few described multicast service on described multicast service channel; Perhaps,
Described multicast service channel is at least one, described multicast service of transmission on described multicast service channel.
10, method according to claim 1 is characterized in that, among the step C described multicast service and described multicast information is returned to described UE via described ONT further to be:
After the multicast service that the described multicast service channel of holding ONT end from OLT is transmitted was encrypted, described OLT returned to described UE with described multicast service and described multicast information via described ONT again.
11, method according to claim 10 is characterized in that, described cryptographic operation is specially:
On described OLT, generate key, and specify reliable ONT; Described key is sent to described reliable ONT; After described ONT receives described key, the multicast packets that receives of deciphering, and receiving group bag correctly.
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| CN101227752B (en) * | 2008-02-05 | 2012-05-23 | 中兴通讯股份有限公司 | Peer to peer communicating method of gigabit passive optical network |
| CN101582877B (en) * | 2008-05-13 | 2012-08-29 | 工业和信息化部电信传输研究所 | Remote management device for filtering frames in GPON system |
| CN101895796B (en) * | 2010-07-26 | 2014-03-19 | 中兴通讯股份有限公司 | Method and system for realizing multicasting in GPON network, and optical network unit |
| EP2940928B1 (en) | 2011-07-29 | 2016-11-09 | Huawei Technologies Co., Ltd. | Multicast program forwarding method, device and system |
| CN102447568B (en) * | 2011-11-18 | 2014-12-24 | 烽火通信科技股份有限公司 | Method for treating downlinking broadcast, flooding business and multicasting business in gigabit passive optical network (GPON) system |
| CN106302188A (en) * | 2015-05-18 | 2017-01-04 | 中兴通讯股份有限公司 | The multicast message transmission control method of a kind of switch device and device |
| CN108029056B (en) * | 2016-06-29 | 2020-06-02 | 北京小米移动软件有限公司 | Data transmission system, data transmission method, data aggregation method and device |
| CN106534123B (en) * | 2016-11-17 | 2019-08-06 | 深圳创维数字技术有限公司 | A kind of data safe transmission method and system based on EOC network |
| CN112637708A (en) * | 2019-09-24 | 2021-04-09 | 中兴通讯股份有限公司 | Method and board card for monitoring multicast service |
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