CN101924960B - Service transport system, equipment and method - Google Patents
Service transport system, equipment and method Download PDFInfo
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- CN101924960B CN101924960B CN200910147804.3A CN200910147804A CN101924960B CN 101924960 B CN101924960 B CN 101924960B CN 200910147804 A CN200910147804 A CN 200910147804A CN 101924960 B CN101924960 B CN 101924960B
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Abstract
The embodiment of the invention provides service transport system, equipment and method. The service transport system comprises the service transport equipment and a packet switching core, wherein the service transport equipment is used for receiving an SDH (Synchronous Digital Hierarchy) line signal from access layer equipment of a TDM (Time Division Multiplexing) switching network, converting the SDH line signal into TDM service, separating the TDM service into EOS (End of Signaling) service and non-EOS service, then converting the EOS service into packet service corresponding to the packet switching core and sending the packet service to the packet switching core; and the packet switching core is used for receiving the packet service and sending the packet service to convergence layer equipment of a packet switching network. The embodiment of the invention realizes the communication of the pocket service between the packet switching network and the TDM switching network without modifying the access layer equipment, thereby saving the cost.
Description
Technical field
The embodiment of the present invention relates to network communications technology field, more specifically, relates to business transmitting method, equipment and the system of packet network and time division multiplexing (Time Division Multiplexing, TDM) switching network.
Background technology
Along with the development of communication service, user is more and more higher to the bandwidth requirement of network.Traditional connection-oriented TDM exchange kind equipment, as synchronous digital hierarchy (Synchronous Digital Hierarchy, SDH), multi-service transport platform (Multi-Service Transmission Platform; MSTP) etc. equipment, is difficult to meet operator's demand, and grouping conveying network (Packet Transport Network, PTN) equipment arises at the historic moment for this reason.In PTN equipment, business transmits with block form, is difficult to intercommunication with original transfer equipment.Have at present two kinds of network schemers, a kind of is complete newly-built PTN network, and another kind is PTN network and SDH, MSTP network while and deposits.In the latter's network schemer, PTN network size is smaller, and SDH, MSTP network size are larger.Transport service in TDM switching network, adopts the mode of SDH carrying Ethernet data bag (Ethernet Over SDH, EOS) to carry conventionally.
When PTN network size is also smaller; a kind of technology need to be provided; can realize and will after the Ethernet service conversion of carrying in SDH/MSTP network, directly be carried on PTN network; the business that realizes, in the intercommunication of TDM switching network and packet network, can protect operator in the existing investment of TDM switching network simultaneously.
Concerning operator, packet switch and TDM exchange biplane equipment can progressively be switched to the business in TDM switching network in packet network.Because convergence-level number of devices is few, network configuration is clear, and cost sensitive degree is relatively low, so convergence-level equipment is faster to the speed of packet switch and the evolution of TDM exchange biplane equipment.In order to realize business transmission end to end, access layer equipment also can be evolved into packet switch and TDM exchange biplane equipment.But under normal conditions, the enormous amount of access layer equipment, the complicated network structure, and Access Layer more pays close attention to networking cost, if be that packet switch and TDM exchange biplane equipment can be very long processes by access layer equipment modernization overlay.
Summary of the invention
The embodiment of the present invention provides business transmitting method, equipment and system, has realized the intercommunication of Packet Service between packet network and TDM switching network.
The embodiment of the present invention provides a kind of service transmission system, comprising: traffic-carrying device and packet switch core; Wherein, described traffic-carrying device, for the access layer equipment from time division multiplexing tdm switching network, receive synchronous digital hierarchy SDH line signal, described SDH line signal is converted to TDM business, by described TDM service detach, be SDH carrying Ethernet data bag EOS business and non-EOS business again, then described EOS business is converted to the Packet Service corresponding to described packet switch core, and described Packet Service is sent to described packet switch core; Described packet switch core, for receiving described Packet Service, and sends to described Packet Service the convergence-level equipment of packet network.
The embodiment of the present invention also provides a kind of service transmission system, comprising: traffic-carrying device, packet switch core and time division multiplexing tdm exchcange core; Wherein, described traffic-carrying device, receives synchronous digital hierarchy SDH line signal for the access layer equipment from TDM switching network, described SDH line signal is converted to TDM business, more described TDM business is sent to described TDM exchcange core; Described TDM exchcange core, for being SDH carrying Ethernet data bag EOS business and non-EOS business by described TDM service detach, then sends to described traffic-carrying device by described EOS business; Described traffic-carrying device, also for the described EOS business from described TDM exchcange core is converted to the Packet Service corresponding to described packet switch core, and sends to described packet switch core by described Packet Service; Described packet switch core, for receiving described Packet Service, and sends to described Packet Service the convergence-level equipment of packet network.
The embodiment of the present invention also provides a kind of traffic-carrying device, described traffic-carrying device is arranged in service transmission system, described service transmission system also comprises packet switch core, described traffic-carrying device comprises: interface module, for the synchronous digital hierarchy SDH line signal of the access layer equipment from time division multiplexing tdm switching network is converted to TDM business; Service detach/merging module, for by the TDM service detach from described interface module being SDH carrying Ethernet data bag EOS business and non-EOS business; Business modular converter, for the EOS business from described service detach/merging module is converted to the Packet Service corresponding to described packet switch core, and sends to the described packet switch core with packet network convergence-level devices communicating by described Packet Service.
The embodiment of the present invention also provides a kind of traffic-carrying device, described traffic-carrying device is arranged in service transmission system, described service transmission system also comprises packet switch core and time division multiplexing tdm exchcange core, described traffic-carrying device comprises: interface module, for the synchronous digital hierarchy SDH line signal of the access layer equipment from TDM switching network being converted to TDM business to send to described TDM exchcange core; Business modular converter, for receive SDH carrying Ethernet data bag EOS business from described TDM exchcange core, and described EOS business is converted to the Packet Service corresponding to described packet switch core, described Packet Service is sent to the described packet switch core with packet network convergence-level devices communicating, described EOS business obtains through described TDM exchcange core the described TDM service detach receiving again.
The embodiment of the present invention also provides a kind of business transmitting method, and this business transmitting method is applied to service transmission system, and described service transmission system comprises traffic-carrying device and packet switch core; Described business transmitting method comprises: described traffic-carrying device receives synchronous digital hierarchy SDH line signal from the access layer equipment of time division multiplexing tdm switching network, described SDH line signal is converted to TDM business, by described TDM service detach, be SDH carrying Ethernet data bag EOS business and non-EOS business again, then described EOS business is converted to the Packet Service corresponding to described packet switch core, and described Packet Service is sent to described packet switch core; Described packet switch core receives described Packet Service, and described Packet Service is sent to the convergence-level equipment of packet network.
The embodiment of the present invention also provides a kind of business transmitting method, and this business transmitting method is applied to service transmission system, and described service transmission system comprises traffic-carrying device, packet switch core and time division multiplexing tdm exchcange core; Described business transmitting method comprises: described traffic-carrying device receives synchronous digital hierarchy SDH line signal from the access layer equipment of TDM switching network, described SDH line signal is converted to TDM business, more described TDM business is sent to described TDM exchcange core; Described TDM exchcange core is SDH carrying Ethernet data bag EOS business and non-EOS business by described TDM service detach, then described EOS business is sent to described traffic-carrying device; Described traffic-carrying device is converted to the Packet Service corresponding to described packet switch core by the described EOS business from described TDM exchcange core, and described Packet Service is sent to described packet switch core; Described packet switch core receives described Packet Service, and described Packet Service is sent to the convergence-level equipment of packet network.
The embodiment of the present invention can realize the intercommunication of Packet Service between packet network and TDM switching network.By means of according to the traffic-carrying device of the embodiment of the present invention, method and system, the EOS business and the non-EOS service detach that come from the SDH line signal of TDM switching network access layer equipment can be come, to EOS business is converted to the Packet Service corresponding to packet switch core, then via the packet switch core with packet network convergence-level devices communicating, Packet Service is sent to packet network, and vice versa.Like this, the service transmission system that has comprised traffic-carrying device of the embodiment of the present invention can be positioned at convergence-level, without access layer equipment is transformed, provides cost savings, and has protected the existing investment of TDM switching network simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 illustrates the schematic block diagram of service transmission system according to an embodiment of the invention;
Fig. 2 illustrates the schematic block diagram of service transmission system according to another embodiment of the present invention;
Fig. 3 illustrates the schematic block diagram of service transmission system according to another embodiment of the present invention;
Fig. 4 illustrates the schematic block diagram of service transmission system according to another embodiment of the present invention;
Fig. 5 illustrates the schematic block diagram of service transmission system according to another embodiment of the present invention;
Fig. 6 illustrates the schematic block diagram of service transmission system according to another embodiment of the present invention;
Fig. 7 illustrates the schematic flow diagram of the business transmitting method of service transmission system according to an embodiment of the invention;
Fig. 8 illustrates the schematic flow diagram of the business transmitting method of service transmission system in accordance with another embodiment of the present invention.
embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making all other embodiment that obtain under creative work prerequisite, belong to the scope of protection of the invention.
Business (hereinafter referred to as " TDM business ") such as the TDM system of SDH, MSTP mainly comprises EOS business and other type TDM business.Emphasis of the present invention solves EOS business and the intercommunication of packet switch core.Hereinafter, other type TDM business except EOS business (as voice service etc.) is called to " non-EOS business ".
Fig. 1 is the schematic block diagram illustrating according to the service transmission system 1000 of the embodiment of the present invention.Service transmission system 1000 comprises traffic-carrying device 100 and packet switch core 200.
Traffic-carrying device 100 receives SDH line signal from the access layer equipment of TDM switching network, SDH line signal is converted to TDM business, by this TDM service detach, be EOS business and non-EOS business again, then the EOS business of separating be converted to corresponding to the Packet Service of packet switch core 200 and send to packet switch core 200.
Packet switch core 200 receives Packet Service, and Packet Service is sent to the convergence-level equipment of packet network.Packet switch core 200 can be carried out dispatch deal to Packet Service.For example, packet switch core 200 can be the operation exchange core of PTN equipment, by packet switch planar design framework, is determined, can adopt the mode of exchange frame by frame, also can adopt fixedly burst exchanged form.
In the embodiment of the present invention, Packet Service can comprise Ethernet service or other bag business.
It should be noted that packet switch core 200 can adopt any existing relevant device or module, it is not construed as limiting the scope of the embodiment of the present invention.
Signal from convergence-level to Access Layer is processed just in time contrary with said process.The service transmission system 1000 of the embodiment of the present invention can be disposed in convergence-level, and not be used in Access Layer by EOS service detach out.Therefore, the embodiment of the present invention is transformed without the access layer equipment to enormous amount, provides cost savings, and has protected the existing investment of TDM switching network.
Fig. 2 illustrates the schematic block diagram of service transmission system 1000 ' according to an embodiment of the invention.In Fig. 1 and Fig. 2, same or analogous Reference numeral represents identical or corresponding element.Service transmission system 1000 ' comprises traffic-carrying device 100 ', packet switch core 200 ' and TDM exchcange core 300.In this embodiment, packet switch core 200 ' is ethernet type.
As shown in Figure 2, packet switch core 200 ' can with the convergence-level devices communicating of packet network, TDM exchcange core 300 can with the convergence-level devices communicating of TDM switching network.For example, packet switch core 200 ' can be the operation exchange core of PTN equipment, by packet switch planar design framework, is determined, can adopt the mode of exchange frame by frame, also can adopt fixedly burst exchanged form.TDM exchcange core 300 can be the time-slot cross core in TDM exchange kind equipment, realizes the various rank interconnections such as VC4/VC3/VC12.
It should be noted that packet switch core 200 and TDM exchcange core 300 can adopt any existing relevant device or module, they are not construed as limiting the scope of the embodiment of the present invention.
Traffic-carrying device 100 ' can comprise interface module 110, service detach/merging module 120 and business modular converter 130.
Interface module 110 receives SDH line signal from the access layer equipment of TDM switching network.Then, interface module 110 is converted to TDM business by SDH line signal.On other direction, interface module 110 for example can be converted to TDM business SDH line signal, to send to outside (, the access layer equipment of TDM switching network).For example, interface module can realize SDH interface framer (Framer) function, i.e. SDH frame framing, solution frame function.Here, TDM business (SDH line signal in other words) comprises EOS business and non-EOS business.The interface rate of interface module 110 can be any rank speed of SDH.
Service detach/merging module 120 is EOS business and non-EOS business by the TDM service detach from interface module 110, or on other direction, by EOS business and non-EOS integrated service, is TDM business.For example, service detach/merging module 120 can be the TDM Cross module of a low capacity, by the separated EOS business of configuration mode and non-EOS business.The capacity of service detach/merging module 120 can be less than the capacity of TDM exchcange core 300, for example, be TDM exchcange core 300 capacity 1/5 or 1/10.
Business modular converter 130 is converted to EOS business corresponding to the Packet Service of packet switch core 200 ' or Packet Service is converted to EOS business.In the situation that packet switch core 200 ' is ethernet type, business modular converter 130 is converted to the Ethernet service corresponding to packet switch core 200 ' by EOS business.Business modular converter 130 receives service detach/merging module 120 isolated EOS business, EOS business from service detach/merging module 120 is converted to the Ethernet service corresponding to ethernet type packet switch core 200 ', or on other direction, the Ethernet service from packet switch core 200 ' is converted to EOS business to send to service detach/merging module 120.
According to one embodiment of present invention, service detach/merging module 120 can send to TDM exchcange core 300 by isolated non-EOS business, to carry out dispatch deal by 300 pairs of non-EOS business of TDM exchcange core, sends to the convergence-level equipment of TDM network.
On the other hand, service detach/merging module 120 can receive non-EOS business from TDM exchcange core 300, from business modular converter 120, receives EOS business.Then service detach/merging module 120 is that TDM business is to send to interface module 110 by the non-EOS business receiving and EOS integrated service.Then, interface module 110 is converted to the TDM business from service detach/merging module 120 SDH line signal and sends, and is sent to the access layer equipment of TDM switching network (for example, MSTP network or SDH network).
Traffic-carrying device 1000 ' and the traffic-carrying device 100 ' of the embodiment of the present invention can come EOS business and non-EOS service detach the SDH line signal from receptions such as TDM switching network access layer equipments, to EOS business is converted to the Packet Service (Ethernet service) corresponding to packet switch core 200 ', then via the packet switch core with packet network convergence-level devices communicating, Ethernet service is sent to packet network, and vice versa.Like this; the service transmission system 1000 ' that has comprised traffic-carrying device 100 ' of the embodiment of the present invention can be positioned at convergence-level; it has realized the intercommunication between packet network and TDM switching network of Packet Service such as Ethernet service etc.; without access layer equipment is transformed; provide cost savings, protected the existing investment of TDM switching network.
Fig. 3 illustrates service transmission system 1000 according to another embodiment of the present invention " schematic block diagram.In Fig. 2 and Fig. 3, same or analogous Reference numeral represents identical or corresponding element.Service transmission system 1000 " comprise traffic-carrying device 100 ", packet switch core 200 " and TDM exchcange core 300.In this embodiment, packet switch core 200 " be bag type, i.e. input and output be bag business.
Service transmission system 1000 " comprise all component of service transmission system 1000 ', in addition, due to packet switch core 200 " be bag type, business modular converter 130 ' need to be converted to EOS business corresponding to packet switch core 200 " bag business.Therefore,, on the basis of Fig. 2, need to increase the module of conversion Ethernet service and bag business.As shown in Figure 3, traffic-carrying device 100 " business modular converter 130 ' comprise EOS modular converter 150 and packet switch adaptation module 140.
EOS modular converter 150 is realized the essentially identical function of business modular converter 130 with Fig. 2, is about to EOS business and is converted to Ethernet service, or Ethernet service is converted to EOS business on other direction.
Packet switch adaptation module 140 is further converted to corresponding to packet switch core 200 for the Ethernet service that EOS modular converter 150 is produced " bag business, to send to packet switch core 200 ".On other direction, packet switch adaptation module 140 is by from packet switch core 200 " bag business be converted to Ethernet service and send to EOS modular converter 150.In other words, packet switch adaptation module 140 is for adaptive with packet switch core, and this adaptation comprises functions such as realizing traffic management, flow scheduling.Ethernet service, through packet switch adaptation module 140, is converted to and is applicable to equipment packet switch core 200 " bag business after, deliver to packet switch core 200 " realize packet switch.
According to packet switch core 200 " dissimilar, packet switch adaptation module 140 need to be delivered to packet switch core 200 according to frame mode by business " or according to slicing mode, deliver to packet switch core 200 ".
Traffic-carrying device 100 " the function of other module and the function of the appropriate section in traffic-carrying device 100 ' basic identical, repeat no more.
The embodiment of the present invention comprised traffic-carrying device 100 " service transmission system 1000 " can be positioned at convergence-level; the Packet Service of its realization such as Ethernet service is in the intercommunication of packet network and TDM switching network; without transformation access layer equipment; provide cost savings, and protected the existing investment of TDM switching network.
In addition, according to the service transmission system 1000,1000 ' and 1000 of the embodiment of the present invention " do not need TDM exchcange core separated/merge EOS business and non-EOS business; thereby can save the cross-capacity of TDM exchcange core, be applicable to the less system of TDM exchcange core capacity.
It should be noted that the modules in the traffic-carrying device of Fig. 1-3 can be implemented on a veneer, also can be according to system needs, minute veneer is realized.These implementations are not construed as limiting the scope of the embodiment of the present invention.
In addition, as required, also can be by the traffic-carrying device of Fig. 3 100 " the function of packet switch adaptation module 140 be incorporated to packet switch core 200 " in, Packet Service is carried out to adaptation conversion by packet switch core according to the situation of packet network.
Fig. 4 illustrates the schematic block diagram of service transmission system 5000 according to another embodiment of the present invention.In the embodiment of Fig. 1-3, by traffic-carrying device separation/merging EOS business and non-EOS business, and in the present embodiment, can utilize TDM exchcange core separation/merging EOS business and non-EOS business.
As shown in Figure 4, service transmission system 5000 comprises traffic-carrying device 500, packet switch core 600 and TDM exchcange core 700.Traffic-carrying device 500 receives SDH line signal from the access layer equipment of TDM switching network, SDH line signal is converted to TDM business, more described TDM business is sent to TDM exchcange core 700.
TDM exchcange core 700 is EOS business and non-EOS business by the TDM service detach receiving from traffic-carrying device 500, then EOS business is sent it back to traffic-carrying device 500.Then, traffic-carrying device 500 is converted to the Packet Service corresponding to packet switch core 600 by the EOS business from TDM exchcange core 700, and Packet Service is sent to packet switch core 600.
Packet switch core 600 receives Packet Service and Packet Service is sent to the convergence-level equipment of packet network.Packet switch core 600 can be carried out dispatch deal to Packet Service.For example, packet switch core 600 can be the operation exchange core of PTN equipment, by packet switch planar design framework, is determined, can adopt the mode of exchange frame by frame, also can adopt fixedly burst exchanged form.
It should be noted that packet switch core 600 and TDM exchcange core 700 can adopt any existing relevant device or module, they are not construed as limiting the scope of the embodiment of the present invention.
Signal from convergence-level to Access Layer is processed just in time contrary with said process.The service transmission system 5000 of the embodiment of the present invention can be disposed in convergence-level, and not be used in Access Layer by EOS service detach out.Therefore, the embodiment of the present invention is transformed without the access layer equipment to enormous amount, provides cost savings, and has protected the existing investment of TDM switching network.
Fig. 5 illustrates the schematic block diagram of service transmission system 5000 ' according to an embodiment of the invention.In Fig. 4 and Fig. 5, same or analogous Reference numeral represents identical or corresponding element.Service transmission system 5000 ' comprises traffic-carrying device 500 ', packet switch core 600 ' and TDM exchcange core 700.In this embodiment, packet switch core 600 ' is ethernet type.
As shown in Figure 5, packet switch core 600 ' can with the convergence-level devices communicating of packet network, TDM exchcange core 700 can with the convergence-level devices communicating of TDM switching network.For example, packet switch core 600 ' can be the operation exchange core of PTN equipment, by packet switch planar design framework, is determined, can adopt the mode of exchange frame by frame, also can adopt fixedly burst exchanged form.TDM exchcange core 700 can be the time-slot cross core in TDM equipment, realizes the various rank interconnections such as VC4/VC3/VC12.
It should be noted that packet switch core 600 ' and TDM exchcange core 700 can adopt any existing relevant device or module, they are not construed as limiting the scope of the embodiment of the present invention.
Traffic-carrying device 500 ' can comprise interface module 510, service detach/merging module 520 and business modular converter 530.
Interface module 510 is basic identical with the interface module 110 in Fig. 2, receives SDH line signal, and SDH line signal is converted to TDM business for the access layer equipment from TDM switching network.On other direction, interface module 510 is for example converted to SDH line signal, to send to outside (, the access layer equipment of TDM switching network) by TDM business.For example, interface module can realize SDH interface framer (Framer) function, i.e. SDH frame framing, solution frame function.Here, TDM business (SDH line signal in other words) comprises EOS business and non-EOS business.The interface rate of interface module 510 can be any rank speed of SDH.
Interface module 510 is directly sent to TDM exchcange core 700 by TDM business.Can realize the separated of EOS business and non-EOS business at TDM exchcange core 700.Non-EOS business after separation can directly be sent to the convergence-level equipment of TDM switching network.EOS business after separation is sent traffic-carrying device 500 ' again back to, particularly, sends the business modular converter 530 of traffic-carrying device 500 ' back to.
Business modular converter 530 is basic identical with the business modular converter 130 in Fig. 2, for EOS business being converted to Ethernet service or Ethernet service being converted to EOS business.That is, business modular converter 530 receives isolated EOS business (for example, from TDM exchcange core 700) from TDM business, is converted into the Ethernet service corresponding to ethernet type packet switch core 600 '.
On the other hand, business modular converter can be converted to Ethernet service EOS business to output to traffic-carrying device 500 ' outside, as TDM exchcange core 700.In the case, by TDM exchcange core 700, merge EOS business and non-EOS business (for example, from TDM switching network convergence-level equipment) generation TDM business, and TDM business is sent it back to the interface module 510 of traffic-carrying device 500 '.Then, interface module 510 is converted to TDM business SDH line signal and sends, and for example, is sent to the access layer equipment of TDM switching network (for example, MSTP network, SDH network).
The service transmission system 5000 ' that has comprised traffic-carrying device 500 ' of the embodiment of the present invention can be positioned at convergence-level; the Packet Service of its realization such as Ethernet service is in the intercommunication of packet network and TDM switching network; without transformation access layer equipment; provide cost savings, and protected the existing investment of TDM switching network.
Fig. 6 illustrates service transmission system 5000 according to another embodiment of the present invention " schematic block diagram.In Fig. 5 and Fig. 6, same or analogous Reference numeral represents identical or corresponding element.Service transmission system 5000 " comprise traffic-carrying device 500 ", packet switch core 600 " and TDM exchcange core 700.In this embodiment, packet switch core 600 ' be bag type, i.e. input and output be bag business.
Service transmission system 5000 " comprise all component of service transmission system 5000 ', in addition, due to packet switch core 600 " be bag type, business modular converter 530 ' need to be converted to EOS business corresponding to packet switch core 600 " bag business.Therefore,, on the basis of Fig. 5, need to increase the module of conversion Ethernet service and bag business.As shown in Figure 6, traffic-carrying device 500 " business modular converter 530 ' comprise EOS modular converter 550 and packet switch adaptation module 540.
EOS modular converter 550 is realized the essentially identical function of business modular converter 530 with Fig. 5, is about to EOS business and is converted to Ethernet service, or Ethernet service is converted to EOS business on other direction.
Packet switch adaptation module 540 is further converted to corresponding to packet switch core 600 for the Ethernet service that EOS modular converter 550 is produced " bag business, to send to packet switch core 600 ".On other direction, packet switch adaptation module 540 is by from packet switch core 600 " bag business be converted to Ethernet service and send to EOS modular converter 550.In other words, packet switch adaptation module 540 is for adaptive with packet switch core, and this adaptation comprises functions such as realizing traffic management, flow scheduling.Ethernet service, through packet switch adaptation module 540, is converted to and is applicable to equipment packet switch core 600 " bag business after, deliver to packet switch core 600 ", realize packet switch.
According to packet switch core 600 " dissimilar, packet switch adaptation module 540 need to be delivered to packet switch core 600 according to frame mode by business ", or according to slicing mode, deliver to packet switch core 600 ".
Traffic-carrying device 500 " the function of other module and the function of the appropriate section in traffic-carrying device 500 ' basic identical, repeat no more.
According to comprising of the embodiment of the present invention traffic-carrying device 500 " service transmission system 5000 " can be positioned at convergence-level; it realizes Ethernet service in the intercommunication of packet network and TDM switching network; without transformation access layer equipment; provide cost savings, and protected the existing investment of TDM switching network.
In addition, according to the service transmission system 5000,5000 ' and 5000 of the embodiment of the present invention ", traffic-carrying device 500,500 ' and 500 " take full advantage of the business configuration function that TDM exchcange core possesses, thereby simplified system, save total cost, be applicable to the larger system of TDM exchcange core capacity.
It should be noted that the modules in the traffic-carrying device of Fig. 4-6 can be implemented on a veneer, also can be according to system needs, minute veneer is realized.These implementations are not construed as limiting the scope of the embodiment of the present invention.
Fig. 7 is the schematic flow diagram illustrating according to the business transmitting method 800 of the embodiment of the present invention.Business transmitting method 800 can be applicable to above-mentioned service transmission system 1000,1000 ' or 1000 ".Business transmitting method 800 is mainly by traffic-carrying device 100,100 ' or 100 " carry out.
At S810, service transmission system 1000,1000 ' or 1000 " traffic-carrying device from the access layer equipment of TDM switching network, receive synchronous digital hierarchy SDH line signal, SDH line signal is converted to TDM business.SDH line signal/TDM business comprises EOS business and non-EOS business.
At S820, by traffic-carrying device, by TDM service detach, be EOS business and non-EOS business.
At S830, by traffic-carrying device, EOS business is converted to the Packet Service corresponding to packet switch core.
On other direction, at S860, by traffic-carrying device, the Packet Service from packet switch core is converted to EOS business.
At S870, by traffic-carrying device, by non-EOS business (for example,, from TDM exchcange core 300) and EOS integrated service, be TDM business.
At S880, by traffic-carrying device, TDM business is converted to SDH line signal, and sends, for example, as Figure 1-3, be sent to the access layer equipment of TDM network (for example, SDH/MSTP network).
Be applied to service transmission system 1000 " in the situation that, business transmitting method 800 can also comprise S840 and S850.At S840, by traffic-carrying device 100 " packet switch adaptation module 140 further Ethernet service is converted to corresponding to packet switch core 200 " bag service concurrence deliver to packet switch core 200 ".
On other direction, at S850, packet switch adaptation module 140 is by from packet switch core 200 " bag business be converted to Ethernet service to send to the EOS modular converter 150 (referring to Fig. 3) of business modular converter 130 '.
It should be noted that each piece in Fig. 7 not necessarily must carry out according to shown order, can revise as required, omit, exchange the execution order of some piece, also can carry out concurrently some piece.For example, S810, S820, S830 can with S860, S870, S880 executed in parallel.For example, in the situation that packet switch core is ethernet type, can omit S840 and S850.
Business transmitting method 800 can be corresponding to service transmission system 1000,1000 ' or 1000 " the performed function of each assembly.Can be according to corresponding flow process is added, revised, omits to the associated description of service transmission system above.For avoiding repetition, repeat no more.
According to the business transmitting method 800 of the embodiment of the present invention, can realize Packet Service in the intercommunication of packet network and TDM switching network, and without transformation access layer equipment, provide cost savings, and protected the existing investment of TDM switching network.
Fig. 8 is the schematic flow diagram illustrating according to the business transmitting method 900 of the service transmission system of the embodiment of the present invention.Business transmitting method 900 can be applicable to above-mentioned service transmission system 5000,5000 ' or 5000 ".Left side at each piece of business transmitting method 900 shows executive agent.
At S910, service transmission system 5000,5000 ' or 5000 " traffic-carrying device from the access layer equipment of TDM switching network, receive SDH line signal; SDH line signal is converted to TDM business, and the TDM business of conversion is sent to the TDM exchcange core 700 with TDM switching network convergence-level devices communicating.TDM business comprises EOS business and non-EOS business.
At S920, TDM exchcange core 700 is EOS business and non-EOS business by TDM service detach, then EOS business is sent it back to traffic-carrying device.
At S930, traffic-carrying device is converted to the Packet Service corresponding to packet switch core by the EOS business from TDM exchcange core 700, and Packet Service is sent to packet switch core.
On other direction, at S960, traffic-carrying device is converted to EOS business by the Packet Service from packet switch core, and sends to TDM exchcange core 700.
At S970, TDM exchcange core 700 is TDM business by the non-EOS business of the convergence-level equipment from TDM switching network with from the EOS integrated service of traffic-carrying device.
At S980, traffic-carrying device is converted to SDH line signal by the TDM business from TDM exchcange core 700, and sends, and for example, is sent to the access layer equipment of TDM network (for example, SDH/MSTP network).
Be applied to service transmission system 5000 " in the situation that, business transmitting method 900 can also comprise S940 and S950.At S940, traffic-carrying device 500 " packet switch adaptation module 540 further Ethernet service is converted to corresponding to packet switch core 600 " bag service concurrence deliver to packet switch core 600 ".
On other direction, at S950, packet switch adaptation module 540 is converted to Ethernet service to send to the EOS modular converter 550 (referring to Fig. 6) of business modular converter 530 ' by the bag business from packet switch core 600 '.
It should be noted that each piece in Fig. 8 not necessarily must carry out according to shown order, can revise as required, omit, exchange the execution order of some piece, also can carry out concurrently some piece.For example, S910, S920, S930 can with S960, S970, S980 executed in parallel.For example, in the situation that packet switch core is ethernet type, can omit S940 and S950.
Business transmitting method 900 can be corresponding to service transmission system 5000,5000 ' or 5000 " the performed function of each assembly.Can be according to corresponding flow process is added, revised, omits to the associated description of service transmission system above.For avoiding repetition, repeat no more.
The business transmitting method 900 of the embodiment of the present invention can be realized Packet Service in the intercommunication of packet network and TDM switching network, and without transformation access layer equipment, provides cost savings, and protected the existing investment of TDM switching network.
According to embodiments of the invention, comprised that the service transmission system of traffic-carrying device is positioned at convergence-level, it realizes the intercommunication of Packet Service in TDM exchange plane and packet switch plane, without access layer equipment is transformed.When access layer network is difficult to transform packet network as rapidly, protected the existing investment of TDM switching network, provide cost savings.
It is TDM switching equipment, convergence-level while being packet switch/TDM exchange biplane equipment or pure packet switching equipment at access layer equipment that the embodiment of the present invention can be used for solving network, the problem of Packet Service intercommunication on packet network and TDM switching network.From development trend, in customer service, the TDM business of non-EOS (, " non-EOS business " described in the embodiment of the present invention) fewer and feweri, more and more such as the Packet Service of ethernet type etc., the EOS traffic carrying capacity in access layer equipment also can progressively increase thereupon.If EOS business, all the time by TDM service bearer, can increase the transformation demand of access layer equipment.The embodiment of the present invention makes can intercommunication in TDM exchange plane and packet switch plane such as the business of EOS business etc., and without transformation access layer equipment, can protect the existing investment of TDM switching network.
Those of ordinary skills can recognize, unit and the algorithm steps of each example of describing in conjunction with embodiment disclosed herein, can realize with electronic hardware, computer software or the combination of the two, for the interchangeability of hardware and software is clearly described, composition and the step of each example described according to function in the above description in general manner.These functions are carried out with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can specifically should be used for realizing described function with distinct methods to each, but this realization should not thought and exceeds scope of the present invention.
The software module that the method for describing in conjunction with embodiment disclosed herein or the step of algorithm can use hardware, processor to carry out, or the combination of the two is implemented.Software module can be placed in the storage medium of any other form known in random asccess memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field.
Although illustrated and described some embodiments of the present invention, it will be understood by those skilled in the art that in the case of without departing from the principles of the present invention, can carry out various modifications to these embodiment, such modification should fall within the scope of the present invention.
Claims (12)
1. a service transmission system, is characterized in that, this service transmission system comprises: traffic-carrying device, packet switch core and time division multiplexing tdm exchcange core; Wherein,
Described traffic-carrying device, for the access layer equipment from time division multiplexing tdm switching network, receive synchronous digital hierarchy SDH line signal, described SDH line signal is converted to TDM business, by described TDM service detach, be SDH carrying Ethernet data bag EOS business and non-EOS business again, then described EOS business is converted to the Packet Service corresponding to described packet switch core, and described Packet Service is sent to described packet switch core;
Described packet switch core, for receiving described Packet Service, and sends to described Packet Service the convergence-level equipment of packet network;
Described packet switch core, also receives Packet Service for the convergence-level equipment from described packet network, and described Packet Service is sent to described traffic-carrying device;
Described traffic-carrying device, also for receiving described Packet Service from described packet switch core, from described TDM exchcange core, receive non-EOS business, described Packet Service is converted to EOS business, by described non-EOS business and described EOS integrated service, be TDM business again, then described TDM business be converted to SDH line signal to send to the access layer equipment of described TDM switching network.
2. service transmission system as claimed in claim 1, is characterized in that,
Described traffic-carrying device, also for sending to described TDM exchcange core by described non-EOS business;
Described TDM exchcange core, for receiving described non-EOS business, and sends to described non-EOS business the convergence-level equipment of TDM switching network.
3. service transmission system as claimed in claim 1, is characterized in that, described packet switch core is ethernet type, and described traffic-carrying device is converted to the Ethernet service corresponding to described packet switch core by described EOS business.
4. service transmission system as claimed in claim 1, is characterized in that, described packet switch core is bag type, and described traffic-carrying device is converted to the bag business corresponding to described packet switch core by described EOS business.
5. a service transmission system, is characterized in that, this service transmission system comprises: traffic-carrying device, packet switch core and time division multiplexing tdm exchcange core; Wherein,
Described traffic-carrying device, receives synchronous digital hierarchy SDH line signal for the access layer equipment from TDM switching network, described SDH line signal is converted to TDM business, more described TDM business is sent to described TDM exchcange core;
Described TDM exchcange core, for being SDH carrying Ethernet data bag EOS business and non-EOS business by described TDM service detach, then sends to described traffic-carrying device by described EOS business;
Described traffic-carrying device, also for the described EOS business from described TDM exchcange core is converted to the Packet Service corresponding to described packet switch core, and sends to described packet switch core by described Packet Service;
Described packet switch core, for receiving described Packet Service, and sends to described Packet Service the convergence-level equipment of packet network;
Described packet switch core, also receives Packet Service for the convergence-level equipment from described packet network, and described Packet Service is sent to described traffic-carrying device;
Described traffic-carrying device, also for described Packet Service is converted to EOS business, and sends to described TDM exchcange core by described EOS business;
Described TDM exchcange core, also for the convergence-level equipment from described TDM switching network, receive non-EOS business, from described traffic-carrying device, receiving EOS business, is TDM business by described EOS business and described non-EOS integrated service, then described TDM business is sent to described traffic-carrying device;
Described traffic-carrying device, also for being converted to SDH line signal to send to the access layer equipment of described TDM switching network by the described TDM business from described TDM exchcange core.
6. service transmission system as claimed in claim 5, is characterized in that, described TDM exchcange core is also for sending to described non-EOS business the convergence-level equipment of TDM switching network.
7. service transmission system as claimed in claim 5, is characterized in that, described packet switch core is ethernet type, and described traffic-carrying device is converted to the Ethernet service corresponding to described packet switch core by described EOS business.
8. service transmission system as claimed in claim 5, is characterized in that, described packet switch core is bag type, and described traffic-carrying device is converted to the bag business corresponding to described packet switch core by described EOS business.
9. a traffic-carrying device, is characterized in that, described traffic-carrying device is arranged in service transmission system, and described service transmission system also comprises packet switch core, and described traffic-carrying device comprises:
Interface module, for being converted to TDM business by the synchronous digital hierarchy SDH line signal of the access layer equipment from time division multiplexing tdm switching network;
Service detach/merging module, for by the TDM service detach from described interface module being SDH carrying Ethernet data bag EOS business and non-EOS business; And
Business modular converter, for the EOS business from described service detach/merging module is converted to the Packet Service corresponding to described packet switch core, and sends to the described packet switch core with packet network convergence-level devices communicating by described Packet Service;
Described business modular converter, also for the Packet Service from described packet switch core is converted to EOS business, and sends to described service detach/merging module by described EOS business;
Described service detach/merging module, also for by non-EOS business be TDM business from the EOS service combining of described business modular converter, and sends to described interface module by described TDM business;
Described interface module, also for the TDM business from described service detach/merging module is converted to SDH line signal, and sends to described SDH line signal the access layer equipment of described TDM switching network.
10. a traffic-carrying device, is characterized in that, described traffic-carrying device is arranged in service transmission system, and described service transmission system also comprises packet switch core and time division multiplexing tdm exchcange core, and described traffic-carrying device comprises:
Interface module, for being converted to the synchronous digital hierarchy SDH line signal of the access layer equipment from TDM switching network TDM business to send to described TDM exchcange core;
Business modular converter, for receive SDH carrying Ethernet data bag EOS business from described TDM exchcange core, and described EOS business is converted to the Packet Service corresponding to described packet switch core, described Packet Service is sent to the described packet switch core with packet network convergence-level devices communicating, described EOS business obtains through described TDM exchcange core the described TDM service detach receiving again;
Described business modular converter, also for receiving Packet Service from described packet switch core, and is converted to EOS business by described Packet Service, more described EOS business is sent to described TDM exchcange core;
Described interface module, also for the TDM business from TDM exchcange core is converted to SDH line signal, and described SDH line signal being sent to the access layer equipment of described TDM switching network, described TDM business merges non-EOS business and from the EOS business of described business modular converter and obtain through described TDM exchcange core.
11. 1 kinds of business transmitting methods, is characterized in that, this business transmitting method is applied to service transmission system, and described service transmission system comprises traffic-carrying device, packet switch core and time division multiplexing tdm exchcange core; Described business transmitting method comprises:
Described traffic-carrying device receives synchronous digital hierarchy SDH line signal from the access layer equipment of time division multiplexing tdm switching network, described SDH line signal is converted to TDM business, by described TDM service detach, be SDH carrying Ethernet data bag EOS business and non-EOS business again, then described EOS business is converted to the Packet Service corresponding to described packet switch core, and described Packet Service is sent to described packet switch core;
Described packet switch core receives described Packet Service, and described Packet Service is sent to the convergence-level equipment of packet network;
Described packet switch core receives Packet Service from the convergence-level equipment of described packet network, and described Packet Service is sent to described traffic-carrying device;
Described traffic-carrying device receives described Packet Service from described packet switch core, from described TDM exchcange core, receive non-EOS business, described Packet Service is converted to EOS business, by described non-EOS business and described EOS integrated service, be TDM business again, then described TDM business be converted to SDH line signal to send to the access layer equipment of described TDM switching network.
12. 1 kinds of business transmitting methods, is characterized in that, this business transmitting method is applied to service transmission system, and described service transmission system comprises traffic-carrying device, packet switch core and time division multiplexing tdm exchcange core; Described business transmitting method comprises:
Described traffic-carrying device receives synchronous digital hierarchy SDH line signal from the access layer equipment of TDM switching network, described SDH line signal is converted to TDM business, more described TDM business is sent to described TDM exchcange core;
Described TDM exchcange core is SDH carrying Ethernet data bag EOS business and non-EOS business by described TDM service detach, then described EOS business is sent to described traffic-carrying device;
Described traffic-carrying device is converted to the Packet Service corresponding to described packet switch core by the described EOS business from described TDM exchcange core, and described Packet Service is sent to described packet switch core;
Described packet switch core receives described Packet Service, and described Packet Service is sent to the convergence-level equipment of packet network;
Described packet switch core receives Packet Service from the convergence-level equipment of described packet network, and described Packet Service is sent to described traffic-carrying device;
Described traffic-carrying device is converted to EOS business by described Packet Service, and described EOS business is sent to described TDM exchcange core;
Described TDM exchcange core receives non-EOS business from the convergence-level equipment of described TDM switching network, from described traffic-carrying device, receive EOS business, by described EOS business and described non-EOS integrated service, be TDM business, then described TDM business sent to described traffic-carrying device;
Described traffic-carrying device is converted to SDH line signal to send to the access layer equipment of described TDM switching network by the described TDM business from described TDM exchcange core.
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| CN103684957B (en) * | 2012-09-12 | 2018-08-10 | 南京中兴新软件有限责任公司 | Message processing method and device |
| CN103117873B (en) * | 2013-01-11 | 2015-07-08 | 杭州初灵信息技术股份有限公司 | Equipment in-band management achieving method based on media access control (MAC) frame |
| CN105634647B (en) * | 2016-01-07 | 2018-01-02 | 烽火通信科技股份有限公司 | Realize the method and system of PTN device platform forward compatibility MSTP equipment |
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