CN101924960A - Service transport system, equipment and method - Google Patents

Service transport system, equipment and method Download PDF

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Publication number
CN101924960A
CN101924960A CN2009101478043A CN200910147804A CN101924960A CN 101924960 A CN101924960 A CN 101924960A CN 2009101478043 A CN2009101478043 A CN 2009101478043A CN 200910147804 A CN200910147804 A CN 200910147804A CN 101924960 A CN101924960 A CN 101924960A
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business
tdm
service
eos
packet
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CN101924960B (en
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周民
杨龙
徐�明
陈丽霞
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Changshu intellectual property operation center Co.,Ltd.
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Huawei Technologies Co Ltd
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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

Service transmission system, equipment and method
Technical field
The embodiment of the invention relates to network communications technology field, more specifically, relates to packet network and time division multiplexing (Time Division Multiplexing, TDM) business transmitting method of switching network, equipment and system.
Background technology
Along with the development of communication service, the user is more and more higher to the bandwidth requirement of network.Traditional connection-oriented TDM exchange kind equipment, as the step number word series (Synchronous Digital Hierarchy, SDH), multi-service transport platform (Multi-Service Transmission Platform; MSTP) etc. equipment is difficult to satisfy operator's demand, and (Packet Transport Network, PTN) equipment arises at the historic moment grouping conveying network for this reason.In PTN equipment, professional with the block form transmission, be difficult to intercommunication with original transfer equipment.Two kinds of network schemers are arranged at present, and 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, the PTN network size is smaller, and SDH, MSTP network size are bigger.Transport service in the TDM switching network, (Ethernet Over SDH, mode EOS) is carried to adopt SDH carrying Ethernet data bag usually.
When the PTN network size is also smaller; a kind of technology need be provided; directly be carried on the PTN network after the Ethernet service conversion that can realize to carry in the SDH/MSTP network; promptly realize professional intercommunication, can protect the existing investment of operator simultaneously at the TDM switching network in TDM switching network and packet network.
Concerning operator, packet switch and TDM exchange biplane equipment can progressively switch to the business in the TDM switching network in the packet network.Because the convergence-level number of devices is few, network configuration is clear, and the cost sensitivity 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 professional end to end transmission, 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 the networking cost is if be that packet switch and TDM exchange biplane equipment can be very long processes with the access layer equipment modernization overlay.
Summary of the invention
The embodiment of the 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 invention provides a kind of service transmission system, comprising: traffic-carrying device and packet switch core; Wherein, described traffic-carrying device, be used for receiving 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 the TDM business, be the professional and non-EOS business of SDH carrying Ethernet data bag EOS again with described TDM service detach, then described EOS business is converted to Packet Service, and described Packet Service is sent to described packet switch core corresponding to described packet switch core; Described packet switch core is used to receive described Packet Service, and described Packet Service is sent to the convergence-level equipment of packet network.
The embodiment of the 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 is used for receiving synchronous digital hierarchy SDH line signal from the access layer equipment of TDM switching network, and described SDH line signal is converted to the TDM business, more described TDM business is sent to described TDM exchcange core; Described TDM exchcange core, being used for described TDM service detach is the professional and non-EOS business of SDH carrying Ethernet data bag EOS, then described EOS business is sent to described traffic-carrying device; Described traffic-carrying device also is used for the described EOS business from described TDM exchcange core is converted to Packet Service corresponding to described packet switch core, and described Packet Service is sent to described packet switch core; Described packet switch core is used to receive described Packet Service, and described Packet Service is sent to the convergence-level equipment of packet network.
The embodiment of the 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 the packet switch core, described traffic-carrying device comprises: interface module is used for the synchronous digital hierarchy SDH line signal from the access layer equipment of time division multiplexing tdm switching network is converted to the TDM business; Service detach/merging module, being used for the TDM service detach from described interface module is the professional and non-EOS business of SDH carrying Ethernet data bag EOS; Professional modular converter is used for the EOS business from described service detach/merging module is converted to Packet Service corresponding to described packet switch core, and described Packet Service is sent to described packet switch core with packet network convergence-level devices communicating.
The embodiment of the 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 is used for the synchronous digital hierarchy SDH line signal from the access layer equipment of TDM switching network is converted to the TDM business to send to described TDM exchcange core; Professional modular converter, be used for receiving SDH carrying Ethernet data bag EOS business from described TDM exchcange core, and described EOS business is converted to Packet Service corresponding to described packet switch core, again described Packet Service is sent to the described packet switch core with packet network convergence-level devices communicating, the described TDM service detach that described EOS business will receive through described TDM exchcange core and obtaining.
The embodiment of the 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 the TDM business, be the professional and non-EOS business of SDH carrying Ethernet data bag EOS again with described TDM service detach, then described EOS business is converted to Packet Service, and described Packet Service is sent to described packet switch core corresponding 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 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 the TDM business, more described TDM business is sent to described TDM exchcange core; Described TDM exchcange core is the professional and non-EOS business of SDH carrying Ethernet data bag EOS with described TDM service detach, then described EOS business is sent to described traffic-carrying device; Described traffic-carrying device will be converted to the Packet Service corresponding to described packet switch core from the described EOS business of 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 invention can realize the intercommunication of Packet Service between packet network and TDM switching network.By means of traffic-carrying device, method and system according to the embodiment of the invention, can EOS in the SDH line signal of TDM switching network access layer equipment is professional to come with non-EOS service detach with coming from, so that the EOS business is converted to Packet Service corresponding to the packet switch core, then via with the packet switch core of 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 invention can be positioned at convergence-level, need not access layer equipment is transformed, and provides cost savings, and has protected the existing investment of TDM switching network simultaneously.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
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 invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making all other embodiment that obtained under the creative work prerequisite.
Business (hereinafter referred to as " TDM business ") such as the TDM system of SDH, MSTP mainly comprises professional and other type TDM business of EOS.Emphasis of the present invention solves the professional and packet switch core intercommunication of EOS.Hereinafter, other type TDM business (as voice service etc.) except the EOS business is called " non-EOS business ".
Fig. 1 is the schematic block diagram that illustrates according to the service transmission system 1000 of the embodiment of the invention.Service transmission system 1000 comprises traffic-carrying device 100 and packet switch core 200.
Traffic-carrying device 100 receives the SDH line signal from the access layer equipment of TDM switching network, the SDH line signal is converted to the TDM business, be the professional and non-EOS business of EOS again with this TDM service detach, 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 dispatched processing to Packet Service.For example, packet switch core 200 can be the operation exchange core of PTN equipment, by the decision of packet switch planar design framework, can adopt the mode of exchange frame by frame, also can adopt fixedly burst exchanged form.
In the embodiment of the 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 invention.
Signal processing from the convergence-level to the Access Layer is just in time opposite with said process.The service transmission system 1000 of the embodiment of the invention can be disposed in the convergence-level, and not be used in Access Layer the EOS service detach is come out.Therefore, the embodiment of the invention need not the access layer equipment of enormous amount is transformed, and 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.Same or analogous Reference numeral is represented identical or elements corresponding among Fig. 1 and Fig. 2.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 an 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 the decision of packet switch planar design framework, 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 intersection core in the TDM exchange kind equipment, realizes 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 invention.
Traffic-carrying device 100 ' can comprise interface module 110, service detach/merging module 120 and professional modular converter 130.
Interface module 110 receives the SDH line signal from the access layer equipment of TDM switching network.Then, interface module 110 is converted to the TDM business with the SDH line signal.On other direction, interface module 110 can be converted to the TDM business SDH line signal to send to outside (for example, the access layer equipment of TDM switching network).For example, interface module can realize SDH interface framer (Framer) function, promptly SDH frame framing, separate the frame function.Here, TDM business (SDH line signal in other words) comprises the professional and non-EOS business of EOS.The interface rate of interface module 110 can be any rank speed of SDH.
Service detach/merging module 120 will be the professional and non-EOS business of EOS from the TDM service detach of interface module 110, or on other direction, EOS business and non-EOS business be synthesized the TDM business.For example, service detach/merging module 120 can be the TDM Cross module of a low capacity, separates the professional and non-EOS business of EOS by configuration mode.The capacity of service detach/merging module 120 can be littler than the capacity of TDM exchcange core 300, for example, be TDM exchcange core 300 capacity 1/5 or 1/10.
Professional modular converter 130 is converted to the EOS business corresponding to the Packet Service of packet switch core 200 ' or with Packet Service and is converted to the EOS business.In packet switch core 200 ' is under the situation of ethernet type, and professional modular converter 130 is converted to Ethernet service corresponding to packet switch core 200 ' with the EOS business.Professional modular converter 130 receives service detach/merging module 120 isolated EOS business, to be converted to Ethernet service from the EOS business of service detach/merging module 120 corresponding to ethernet type packet switch core 200 ', or on other direction, will be converted to the EOS business from the Ethernet service of packet switch core 200 ' 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 with isolated non-EOS business, to dispatch processing 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, receives the EOS business from professional modular converter 120.Service detach/merging module 120 non-EOS that will receive is professional then synthesizes the TDM business to send to interface module 110 with the EOS business.Then, interface module 110 will be converted to the SDH line signal from the TDM business of service detach/merging module 120 and send, and be sent to the access layer equipment of TDM switching network (for example, MSTP network or SDH network).
The traffic-carrying device 1000 ' of the embodiment of the invention and traffic-carrying device 100 ' can come the business of the EOS from the SDH line signal of receptions such as TDM switching network access layer equipment with non-EOS service detach, so that the EOS business is converted to Packet Service (Ethernet service) corresponding to packet switch core 200 ', then via with the packet switch core of 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 invention can be positioned at convergence-level; it has realized the intercommunication of Packet Service between packet network and TDM switching network such as Ethernet service etc.; need not 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.Same or analogous Reference numeral is represented identical or elements corresponding among Fig. 2 and Fig. 3.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 the bag type, i.e. input and output be that bag is professional.
Service transmission system 1000 " comprise all component of service transmission system 1000 ', in addition, because packet switch core 200 " be the bag type, professional modular converter 130 ' need be converted to the EOS business corresponding to packet switch core 200 " the bag business.Therefore, on the basis of Fig. 2, need to increase conversion Ethernet service and the professional module of bag.As shown in Figure 3, traffic-carrying device 100 " professional modular converter 130 ' comprise EOS modular converter 150 and packet switch adaptation module 140.
EOS modular converter 150 is realized the professional modular converter 130 essentially identical functions with Fig. 2, is about to the EOS business and is converted to Ethernet service, or Ethernet service is converted to the EOS business on other direction.
Packet switch adaptation module 140 is used for the Ethernet service that EOS modular converter 150 produces further is converted to corresponding to packet switch core 200 " the bag business, to send to packet switch core 200 ".On other direction, packet switch adaptation module 140 will be from packet switch core 200 " the bag business be converted to Ethernet service and send to EOS modular converter 150.In other words, packet switch adaptation module 140 is used for the packet switch core adaptive, this adaptive functions such as realizing traffic management, flow scheduling that comprises.Ethernet service is through packet switch adaptation module 140, is converted to be fit to equipment packet switch core 200 " the 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 be delivered to packet switch core 200 according to the frame mode with business " or deliver to packet switch core 200 according to slicing mode ".
Traffic-carrying device 100 " the function of other module and the function of the appropriate section in the traffic-carrying device 100 ' basic identical, repeat no more.
The embodiment of the 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; need not to transform access layer equipment; provide cost savings, and protected the existing investment of TDM switching network.
In addition, service transmission system 1000,1000 ' and 1000 according to the embodiment of the invention " do not need the TDM exchcange core to separate/merge the professional and non-EOS business of EOS; thereby can save the cross-capacity of TDM exchcange core, the suitable less system of TDM exchcange core capacity.
It should be noted that each module in the traffic-carrying device of Fig. 1-3 can be implemented on the veneer, also can divide veneer to realize according to system's needs.These implementations are not construed as limiting the scope of the embodiment of the invention.
In addition, as required, also can be with the traffic-carrying device 100 of Fig. 3 " the function of packet switch adaptation module 140 incorporate packet switch core 200 into " in, to come Packet Service is carried out adaptive conversion according to the situation of packet network by the packet switch core.
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, the professional and non-EOS business by traffic-carrying device separation/merging EOS, and in the present embodiment, can utilize the professional and non-EOS business of TDM exchcange core separation/merging EOS.
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 the SDH line signal from the access layer equipment of TDM switching network, and the SDH line signal is converted to the TDM business, more described TDM business is sent to TDM exchcange core 700.
The TDM service detach that TDM exchcange core 700 will receive from traffic-carrying device 500 is the professional and non-EOS business of EOS, then the EOS business is sent it back traffic-carrying device 500.Then, traffic-carrying device 500 will be converted to the Packet Service corresponding to packet switch core 600 from the EOS business of 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 dispatched processing to Packet Service.For example, packet switch core 600 can be the operation exchange core of PTN equipment, by the decision of packet switch planar design framework, 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 invention.
Signal processing from the convergence-level to the Access Layer is just in time opposite with said process.The service transmission system 5000 of the embodiment of the invention can be disposed in the convergence-level, and not be used in Access Layer the EOS service detach is come out.Therefore, the embodiment of the invention need not the access layer equipment of enormous amount is transformed, and 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.Same or analogous Reference numeral is represented identical or elements corresponding among Fig. 4 and Fig. 5.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 an 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 the decision of packet switch planar design framework, 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 intersection core in the TDM equipment, realizes 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 invention.
Traffic-carrying device 500 ' can comprise interface module 510, service detach/merging module 520 and professional modular converter 530.
Interface module 510 is basic identical with the interface module 110 among Fig. 2, is used for receiving the SDH line signal from the access layer equipment of TDM switching network, and the SDH line signal is converted to the TDM business.On other direction, interface module 510 is converted to the SDH line signal to send to outside (for example, the access layer equipment of TDM switching network) with the TDM business.For example, interface module can realize SDH interface framer (Framer) function, promptly SDH frame framing, separate the frame function.Here, TDM business (SDH line signal in other words) comprises the professional and non-EOS business of EOS.The interface rate of interface module 510 can be any rank speed of SDH.
Interface module 510 directly is sent to TDM exchcange core 700 with the TDM business.Can realize separating of EOS business and non-EOS business at TDM exchcange core 700.Non-EOS business after separating can directly be sent to the convergence-level equipment of TDM switching network.EOS business after separating is sent traffic-carrying device 500 ' again back to, particularly, sends the professional modular converter 530 of traffic-carrying device 500 ' back to.
Professional modular converter 530 is basic identical with the professional modular converter 130 among Fig. 2, is used for the EOS business is converted to Ethernet service or Ethernet service is converted to the EOS business.That is, professional modular converter 530 receives isolated EOS business (for example from TDM exchcange core 700) from the TDM business, is converted into the Ethernet service corresponding to ethernet type packet switch core 600 '.
On the other hand, professional modular converter can be converted to Ethernet service the EOS business to output to traffic-carrying device 500 ' outside, as TDM exchcange core 700.In the case, merge professional and non-EOS business (for example) the generation TDM business of EOS, and the TDM business is sent it back the interface module 510 of traffic-carrying device 500 ' from TDM switching network convergence-level equipment by TDM exchcange core 700.Then, interface module 510 is converted to the SDH line signal with the TDM business 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 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; need not to transform 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.Same or analogous Reference numeral is represented identical or elements corresponding among Fig. 5 and Fig. 6.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 ' is the bag type, i.e. input and output be that bag is professional.
Service transmission system 5000 " comprise all component of service transmission system 5000 ', in addition, because packet switch core 600 " be the bag type, professional modular converter 530 ' need be converted to the EOS business corresponding to packet switch core 600 " the bag business.Therefore, on the basis of Fig. 5, need to increase conversion Ethernet service and the professional module of bag.As shown in Figure 6, traffic-carrying device 500 " professional modular converter 530 ' comprise EOS modular converter 550 and packet switch adaptation module 540.
EOS modular converter 550 is realized the professional modular converter 530 essentially identical functions with Fig. 5, is about to the EOS business and is converted to Ethernet service, or Ethernet service is converted to the EOS business on other direction.
Packet switch adaptation module 540 is used for the Ethernet service that EOS modular converter 550 produces further is converted to corresponding to packet switch core 600 " the bag business, to send to packet switch core 600 ".On other direction, packet switch adaptation module 540 will be from packet switch core 600 " the bag business be converted to Ethernet service and send to EOS modular converter 550.In other words, packet switch adaptation module 540 is used for the packet switch core adaptive, this adaptive functions such as realizing traffic management, flow scheduling that comprises.Ethernet service is through packet switch adaptation module 540, is converted to be fit to equipment packet switch core 600 " the 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 be delivered to packet switch core 600 according to the frame mode with business ", perhaps deliver to packet switch core 600 according to slicing mode ".
Traffic-carrying device 500 " the function of other module and the function of the appropriate section in the traffic-carrying device 500 ' basic identical, repeat no more.
According to comprising of the embodiment of the invention traffic-carrying device 500 " service transmission system 5000 " can be positioned at convergence-level; it realizes the intercommunication of Ethernet service at packet network and TDM switching network; need not to transform access layer equipment; provide cost savings, and protected the existing investment of TDM switching network.
In addition, service transmission system 5000,5000 ' and 5000 according to the embodiment of the invention ", traffic-carrying device 500,500 ' and 500 " made full use of the business configuration function that the TDM exchcange core possesses, thereby simplified system design, save total cost, be fit to the bigger system of TDM exchcange core capacity.
It should be noted that each module in the traffic-carrying device of Fig. 4-6 can be implemented on the veneer, also can divide veneer to realize according to system's needs.These implementations are not construed as limiting the scope of the embodiment of the invention.
Fig. 7 is the schematic flow diagram that illustrates according to the business transmitting method 800 of the embodiment of the 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 receive synchronous digital hierarchy SDH line signal from the access layer equipment of TDM switching network, the SDH line signal is converted to the TDM business.SDH line signal/TDM business comprises the professional and non-EOS business of EOS.
At S820, be the professional and non-EOS business of EOS with the TDM service detach by traffic-carrying device.
At S830, the EOS business is converted to Packet Service corresponding to the packet switch core by traffic-carrying device.
On other direction,, will be converted to the EOS business from the Packet Service of packet switch core by traffic-carrying device at S860.
At S870, non-EOS business (for example, from TDM exchcange core 300) and EOS business are synthesized the TDM business by traffic-carrying device.
At S880, by traffic-carrying device the TDM business is converted to the 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 " situation under, 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 " the bag service concurrence deliver to packet switch core 200 ".
On the other direction, at S850, packet switch adaptation module 140 will be from packet switch core 200 " the bag business be converted to Ethernet service to send to the EOS modular converter 150 (referring to Fig. 3) of professional modular converter 130 '.
It should be noted that each piece among Fig. 7 not necessarily must carry out according to shown order, can revise, omit, exchange the execution order of some piece as required, also can carry out some piece concurrently.For example, S810, S820, S830 can with S860, S870, S880 executed in parallel.For example, be under the situation of ethernet type in the packet switch core, 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 add, revise, omit corresponding flow process according to top associated description to service transmission system.For avoiding repetition, repeat no more.
Can realize the intercommunication of Packet Service according to the business transmitting method 800 of the embodiment of the invention, and need not to transform access layer equipment, provide cost savings, and protected the existing investment of TDM switching network at packet network and TDM switching network.
Fig. 8 is the schematic flow diagram that illustrates according to the business transmitting method 900 of the service transmission system of the embodiment of the 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 receive the SDH line signal from the access layer equipment of TDM switching network; the SDH line signal is converted to the TDM business, and the TDM business of conversion is sent to TDM exchcange core 700 with TDM switching network convergence-level devices communicating.The TDM business comprises the professional and non-EOS business of EOS.
At S920, TDM exchcange core 700 is the professional and non-EOS business of EOS with the TDM service detach, then the EOS business is sent it back traffic-carrying device.
At S930, traffic-carrying device will be converted to the Packet Service corresponding to the packet switch core from the EOS business of TDM exchcange core 700, and Packet Service is sent to the packet switch core.
On other direction, at S960, traffic-carrying device will be converted to the EOS business from the Packet Service of packet switch core, and send to TDM exchcange core 700.
At S970, TDM exchcange core 700 is will be from the non-EOS of the convergence-level equipment of TDM switching network professional and synthesize the TDM business from the EOS business of traffic-carrying device.
At S980, traffic-carrying device will be converted to the SDH line signal from the TDM business of TDM exchcange core 700, and send, and for example, be sent to the access layer equipment of TDM network (for example, SDH/MSTP network).
Be applied to service transmission system 5000 " situation under, 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 " the bag service concurrence deliver to packet switch core 600 ".
On the other direction, at S950, packet switch adaptation module 540 will be converted to Ethernet service from the bag business of packet switch core 600 ' to send to the EOS modular converter 550 (referring to Fig. 6) of professional modular converter 530 '.
It should be noted that each piece among Fig. 8 not necessarily must carry out according to shown order, can revise, omit, exchange the execution order of some piece as required, also can carry out some piece concurrently.For example, S910, S920, S930 can with S960, S970, S980 executed in parallel.For example, be under the situation of ethernet type in the packet switch core, 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 add, revise, omit corresponding flow process according to top associated description to service transmission system.For avoiding repetition, repeat no more.
The business transmitting method 900 of the embodiment of the invention can be realized the intercommunication of Packet Service at packet network and TDM switching network, and need not to transform access layer equipment, provides cost savings, and has 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 on TDM exchange plane and packet switch plane, need not 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 when being packet switch/TDM exchange biplane equipment or pure packet switching equipment at access layer equipment that the embodiment of the invention can be used for solving network, the problem of Packet Service intercommunication on packet network and TDM switching network.From development trend, the TDM business of non-EOS (promptly in the customer service, the embodiment of the invention described " non-EOS business ") fewer and feweri, more and more such as the Packet Service of ethernet type etc., the EOS traffic carrying capacity in the access layer equipment also can progressively increase thereupon.If the EOS business can increase the transformation demand of access layer equipment all the time by the TDM service bearer.The embodiment of the invention makes can intercommunication on TDM exchange plane and packet switch plane such as the business of EOS business etc., and need not to transform access layer equipment, can protect the existing investment of TDM switching network.
Those of ordinary skills can recognize, the 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 clearly is described, the composition and the step of each example described prevailingly according to function in the above description.These functions still are that software mode is carried out with hardware actually, depend on the application-specific and the design constraint of technical scheme.The professional and technical personnel can use distinct methods to realize described function to each specific should being used for, but this realization should not thought and exceeds scope of the present invention.
The method of describing in conjunction with embodiment disclosed herein or the step of algorithm can use the software module of hardware, processor execution, and perhaps the combination of the two is implemented.Software module can place 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 the 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 (16)

1. a service transmission system is characterized in that, this service transmission system comprises: traffic-carrying device and packet switch core; Wherein,
Described traffic-carrying device, be used for receiving 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 the TDM business, be the professional and non-EOS business of SDH carrying Ethernet data bag EOS again with described TDM service detach, then described EOS business is converted to Packet Service, and described Packet Service is sent to described packet switch core corresponding to described packet switch core;
Described packet switch core is used to receive described Packet Service, and described Packet Service is sent to the convergence-level equipment of packet network.
2. service transmission system as claimed in claim 1 is characterized in that this service transmission system also comprises the TDM exchcange core;
Described traffic-carrying device also is used for described non-EOS business is sent to described TDM exchcange core;
Described TDM exchcange core is used to receive described non-EOS business, and described non-EOS business is sent to the convergence-level equipment of TDM switching network.
3. service transmission system as claimed in claim 2 is characterized in that,
Described packet switch core also is used for receiving 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 also is used for receiving described Packet Service from described packet switch core, receives non-EOS business from described TDM exchcange core; Described Packet Service is converted to the EOS business, more described non-EOS business and described EOS business is synthesized the TDM business, then described TDM business is converted to the SDH line signal to send to the access layer equipment of described TDM switching network.
4. service transmission system as claimed in claim 1 is characterized in that, described packet switch core is an ethernet type, and described traffic-carrying device is converted to Ethernet service corresponding to described packet switch core with described EOS business.
5. service transmission system as claimed in claim 1 is characterized in that, described packet switch core is the bag type, and described traffic-carrying device is converted to bag business corresponding to described packet switch core with described EOS business.
6. 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 is used for receiving synchronous digital hierarchy SDH line signal from the access layer equipment of TDM switching network, and described SDH line signal is converted to the TDM business, more described TDM business is sent to described TDM exchcange core;
Described TDM exchcange core, being used for described TDM service detach is the professional and non-EOS business of SDH carrying Ethernet data bag EOS, then described EOS business is sent to described traffic-carrying device;
Described traffic-carrying device also is used for the described EOS business from described TDM exchcange core is converted to Packet Service corresponding to described packet switch core, and described Packet Service is sent to described packet switch core;
Described packet switch core is used to receive described Packet Service, and described Packet Service is sent to the convergence-level equipment of packet network.
7. service transmission system as claimed in claim 6 is characterized in that, described TDM exchcange core also is used for described non-EOS business is sent to the convergence-level equipment of TDM switching network.
8. service transmission system as claimed in claim 7 is characterized in that,
Described packet switch core also is used for receiving 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 also is used for described Packet Service is converted to the EOS business, and described EOS business is sent to described TDM exchcange core,
Described TDM exchcange core also is used for receiving non-EOS business from the convergence-level equipment of described TDM switching network, receives the EOS business from described traffic-carrying device; Described EOS business and described non-EOS business are synthesized the TDM business, then described TDM business is sent to described traffic-carrying device;
Described traffic-carrying device also is used for the described TDM business from described TDM exchcange core is converted to the SDH line signal to send to the access layer equipment of described TDM switching network.
9. service transmission system as claimed in claim 6 is characterized in that, described packet switch core is an ethernet type, and described traffic-carrying device is converted to Ethernet service corresponding to described packet switch core with described EOS business.
10. service transmission system as claimed in claim 6 is characterized in that, described packet switch core is the bag type, and described traffic-carrying device is converted to bag business corresponding to described packet switch core with described EOS business.
11. a traffic-carrying device is characterized in that described traffic-carrying device is arranged in service transmission system, described service transmission system also comprises the packet switch core, and described traffic-carrying device comprises:
Interface module is used for the synchronous digital hierarchy SDH line signal from the access layer equipment of time division multiplexing tdm switching network is converted to the TDM business;
Service detach/merging module, being used for the TDM service detach from described interface module is the professional and non-EOS business of SDH carrying Ethernet data bag EOS; And
Professional modular converter is used for the EOS business from described service detach/merging module is converted to Packet Service corresponding to described packet switch core, and described Packet Service is sent to described packet switch core with packet network convergence-level devices communicating.
12. traffic-carrying device as claimed in claim 11 is characterized in that,
Described professional modular converter also is used for the Packet Service from described packet switch core is converted to the EOS business, and described EOS business is sent to described service detach/merging module;
Described service detach/merging module also is used for non-EOS is professional and be the TDM business from the EOS service combining of described professional modular converter, and described TDM business is sent to described interface module;
Described interface module also is used for the TDM business from described service detach/merging module is converted to the SDH line signal, and described SDH line signal is sent to the access layer equipment of described TDM switching network.
13. a traffic-carrying device is characterized in that 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, and described traffic-carrying device comprises:
Interface module is used for the synchronous digital hierarchy SDH line signal from the access layer equipment of TDM switching network is converted to the TDM business to send to described TDM exchcange core;
Professional modular converter, be used for receiving SDH carrying Ethernet data bag EOS business from described TDM exchcange core, and described EOS business is converted to Packet Service corresponding to described packet switch core, again described Packet Service is sent to the described packet switch core with packet network convergence-level devices communicating, the described TDM service detach that described EOS business will receive through described TDM exchcange core and obtaining.
14. traffic-carrying device as claimed in claim 13 is characterized in that,
Described professional modular converter also is used for receiving Packet Service from described packet switch core, and described Packet Service is converted to the EOS business, more described EOS business is sent to described TDM exchcange core;
Described interface module, also be used for the TDM business from the TDM exchcange core is converted to the SDH line signal, and described SDH line signal sent to the access layer equipment of described TDM switching network, it is professional and professional and obtain from the EOS of described professional modular converter that described TDM business merges non-EOS through described TDM exchcange core.
15. a business transmitting method is characterized in that this business transmitting method is applied to service transmission system, 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 the TDM business, be the professional and non-EOS business of SDH carrying Ethernet data bag EOS again with described TDM service detach, then described EOS business is converted to Packet Service, and described Packet Service is sent to described packet switch core corresponding 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.
16. a business transmitting method is characterized in that this business transmitting method is applied to service transmission system, 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, and described SDH line signal is converted to the TDM business, more described TDM business is sent to described TDM exchcange core;
Described TDM exchcange core is the professional and non-EOS business of SDH carrying Ethernet data bag EOS with described TDM service detach, then described EOS business is sent to described traffic-carrying device;
Described traffic-carrying device will be converted to the Packet Service corresponding to described packet switch core from the described EOS business of 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.
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