CN102437944B - System, device and method for intercommunication between LANs (local area networks) - Google Patents
System, device and method for intercommunication between LANs (local area networks) Download PDFInfo
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- CN102437944B CN102437944B CN201110460607.4A CN201110460607A CN102437944B CN 102437944 B CN102437944 B CN 102437944B CN 201110460607 A CN201110460607 A CN 201110460607A CN 102437944 B CN102437944 B CN 102437944B
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Abstract
The invention discloses a system, a device and a method for intercommunication between LANs (local area networks). The system comprises a first device with a PDH (Pseudo-synchronous Digital Hierarchy) interface, a conversion device, a first SDH (Synchronous Digital Hierarchy) device, a transmission network, a second SDH device and a second device, wherein the transmission protocol of the first device is different from that of the second device. The first device and the first SDH device are connected through the conversion device, a PDH signal sent by the first device is converted into a target signal, and then, the target signal is input into the first SDH device; and the target signal sent by the first SDH device is converted into the PDH signal, and the converted PDH signal is sent to the first device. So, By utilizing the system, the device and the method, intercommunication between the LANs of the devices using different transmission protocols is realized based on the conversion device, landing of subscriber services is avoided, the security of subscriber services is guaranteed, simultaneously, the flexibility of use of an Ethernet device is increased, and the operating and maintenance cost is reduced effectively.
Description
Technical field
The present invention relates to the communications field, particularly a kind of system, Apparatus and method for of intercommunication of local area network (LAN).
Background technology
Along with the development of network technology, the application of local area network (LAN) is more and more extensive.The transfer mechanism extensively adopted in a local network is ethernet technology.But, ethernet technology is a kind of tranmission techniques based on frame, and when being in the intercommunication of the local area network (LAN) of diverse geographic location, usually adopt the transmission network based on time-division multiplex technology to carry out transfer of data, therefore, a large amount of ethernet signals needs to realize long range propagation by SDH (Synchronous Digital Hierarchy) (SynchronousDigital Hierarchy, SDH) transmission network.Ethernet signal directly can not input SDH transmission network and transmit, normally be mapped to synchronous digital hierarchy (Ethernet over Synchronous Digital Hierarchy by Ethernet protocol transducer or Ethernet, EOS) equipment inputs SDH equipment after carrying out signal conversion, the signal of reception is converted to SDH signal by SDH equipment, then inputs SDH transmission network and carries out long range propagation.
Ethernet protocol transducer comprises physical chip, protocol converter chip and PDH (Pseudo-synchronous Digital Hierarchy) (Plesiosynchronous Digital Hierarchy, PDH) interface.When by Ethernet protocol transducer, ethernet signal is converted to PDH signal, SDH equipment is sent to by PDH interface, the PDH signal of reception is converted to SDH signal by SDH equipment, then SDH transmission network is sent to, after SDH transmission network is transferred to destination, the SDH equipment of input destination, the SDH signal received is converted to PDH signal by the SDH equipment of destination, then the Ethernet protocol transducer of destination is sent to by PDH interface, the PDH signal received is converted to the local area network (LAN) that ethernet signal is sent to destination by the Ethernet protocol transducer of destination, the local area network (LAN) achieving diverse geographic location intercoms mutually.
EOS equipment comprises physical chip and EOS chip.When by EOS equipment, ethernet signal is converted to echo signal, SDH equipment is sent to by bus, the echo signal received is converted to SDH signal by SDH equipment, then SDH transmission network is sent to, after SDH transmission network is transferred to destination, the SDH equipment of input destination, the SDH signal received is converted to echo signal by the SDH equipment of destination, then the EOS equipment of destination is sent to by bus, the echo signal received conversion ethernet signal is sent to the local area network (LAN) of destination by the EOS equipment of destination, the local area network (LAN) achieving diverse geographic location intercoms mutually.
In sum, Ethernet protocol transducer is different with the host-host protocol of EOS equipment, therefore, different to the processing procedure of signal.When the local area network (LAN) carrying out diverse geographic location intercoms mutually, if the local area network (LAN) of one end uses Ethernet protocol transducer, the local area network (LAN) of the other end uses EOS equipment, then now can not realize intercoming mutually between these two local area network (LAN)s.
Summary of the invention
The embodiment of the present invention provides a kind of system, Apparatus and method for of intercommunication of local area network (LAN), in order to realize the intercommunication mutually used between the local area network (LAN) of distinct device.
The system of the intercommunication of a kind of local area network (LAN) that the embodiment of the present invention provides comprises the first equipment, conversion equipment, the first SDH equipment, transmission network, the second SDH equipment and second equipment with PDH interface, wherein,
Described first equipment, for by from first game territory net and the ethernet signal that object is the second local area network (LAN) is converted to PDH signal, and is sent to described conversion equipment by PDH interface; For by by PDH interface to object be that the PDH signal of the first local area network (LAN) is converted to ethernet signal and is sent to the first local area network (LAN);
Described conversion equipment, for by by PDH interface to object be that the PDH signal of the second local area network (LAN) is converted to echo signal and is sent to described first SDH equipment; For described first SDH equipment is sent and the echo signal that object is the first local area network (LAN) is converted to PDH signal, and be sent to described first equipment by PDH interface;
Described first SDH equipment, for described conversion equipment is sent and the echo signal that object is the second local area network (LAN) is converted to SDH signal is sent to described transmission network; For by transmit through described transmission network and the SDH signal that object is the first local area network (LAN) is converted to echo signal is sent to described conversion equipment;
Described transmission network, for by described first SDH equipment send and object is that the SDH Signal transmissions of the second local area network (LAN) is to described second SDH equipment; For by described second SDH equipment send and object is that the SDH Signal transmissions of the first local area network (LAN) is to described first SDH equipment;
Described second SDH equipment, for by transmit through described transmission network and the SDH signal that object is the second local area network (LAN) is converted to echo signal is sent to described second equipment; For described second equipment is sent and the echo signal that object is the first local area network (LAN) is converted to SDH signal is sent to described transmission network;
Described second equipment, for described second SDH equipment is sent and the echo signal that object is the second local area network (LAN) is converted to ethernet signal is sent to the second local area network (LAN); For by from second game's territory net and the ethernet signal that object is the first local area network (LAN) is converted to echo signal is sent to described second SDH equipment.
A kind of conversion equipment being applied to said system that the embodiment of the present invention provides comprises the first modular converter and the second modular converter, and described first modular converter is connected with described second modular converter, wherein,
Described first modular converter, for by by PDH interface to object be that the PDH signal of the second local area network (LAN) is converted to ethernet signal and is sent to described second modular converter; For described second modular converter is sent and the ethernet signal that object is the first local area network (LAN) is converted to PDH signal, and be sent to the first equipment by PDH interface;
Described second modular converter, for described first modular converter is sent and the ethernet signal that object is the second local area network (LAN) is converted to echo signal is sent to the first SDH equipment; For described first SDH equipment is sent and the order signal that object is the first local area network (LAN) is converted to ethernet signal is sent to described first modular converter.
The method of the intercommunication of a kind of local area network (LAN) that the embodiment of the present invention provides, be applied to the system comprising the first equipment, conversion equipment, the first SDH equipment, transmission network, the second SDH equipment and second equipment with PDH interface, the method comprises:
Described first equipment by from first game territory net and the ethernet signal that object is the second local area network (LAN) is converted to PDH signal, and is sent to described conversion equipment by PDH interface;
The PDH signal received is converted to echo signal and is sent to described first SDH equipment by described conversion equipment;
The echo signal received is converted to SDH signal and is sent to described transmission network by described first SDH equipment, is transferred to described second SDH equipment through described transmission network;
The SDH signal received is converted to echo signal and is sent to described second equipment by described second SDH equipment;
The echo signal received is converted to ethernet signal and is sent to the second local area network (LAN) by described second equipment.
The method of the intercommunication of a kind of local area network (LAN) that the embodiment of the present invention provides, be applied to the system comprising the first equipment, conversion equipment, the first SDH equipment, transmission network, the second SDH equipment and second equipment with PDH interface, the method comprises:
Described second equipment is by from second game's territory net and the ethernet signal that object is the first local area network (LAN) is converted to echo signal is sent to described second SDH equipment;
The echo signal received is converted to SDH signal and is sent to described transmission network by described second SDH equipment, is transferred to described first SDH equipment through described transmission network;
The SDH signal received is converted to echo signal and is sent to described conversion equipment by described first SDH equipment;
The echo signal received is converted to PDH signal by described conversion equipment, and is sent to described first equipment by PDH interface;
The PDH signal received is converted to ethernet signal and is sent to the first local area network (LAN) by described first equipment.
As seen through the above technical solutions, the system of the intercommunication of a kind of local area network (LAN) provided in the embodiment of the present invention comprises the first equipment, conversion equipment, the first SDH equipment, transmission network, the second SDH equipment and second equipment with PDH interface, wherein, the first equipment is different with the host-host protocol of the second equipment.Utilize conversion equipment to connect the first equipment and the first SDH equipment, the PDH signal that the first equipment sends is converted to echo signal, then inputs the first SDH equipment; The echo signal that first SDH equipment sends is converted to PDH signal and is sent to the first equipment.Therefore, by conversion equipment, the intercommunication mutually used between the local area network (LAN) of the different equipment of host-host protocol can be realized, customer service is avoided to land, ensure that the safety of customer service, add the flexibility that ethernet device uses simultaneously, effectively reduce O&M cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of present system embodiment;
Fig. 2 is the structural representation of a specific embodiment of conversion equipment in the present invention;
Fig. 3 is the structural representation of another specific embodiment of conversion equipment in the present invention;
Fig. 4 is the structural representation of the first modular converter in the embodiment of the present invention;
Fig. 5 is the structural representation of the second modular converter in the embodiment of the present invention;
Fig. 6 is the schematic flow sheet of a specific embodiment of the inventive method;
Fig. 7 is the schematic flow sheet of another specific embodiment of the inventive method.
Embodiment
The system of the intercommunication of a kind of local area network (LAN) that the embodiment of the present invention provides comprises the first equipment, conversion equipment, the first SDH equipment, transmission network, the second SDH equipment and second equipment with PDH interface.
Below in conjunction with accompanying drawing, present system is described in detail.
Fig. 1 is the structural representation of present system embodiment.
Shown in Figure 1, the system of the intercommunication of a kind of local area network (LAN) that the embodiment of the present invention provides comprises the first equipment 11, conversion equipment 12, first SDH equipment 13, transmission network 14, second SDH equipment 15 and the second equipment 16 that possess PDH interface, wherein,
Described first equipment 11, for by from first game territory net and the ethernet signal that object is the second local area network (LAN) is converted to PDH signal, and is sent to described conversion equipment 12 by PDH interface; For by by PDH interface to object be that the PDH signal of the first local area network (LAN) is converted to ethernet signal and is sent to the first local area network (LAN);
Described conversion equipment 12, for by by PDH interface to object be that the PDH signal of the second local area network (LAN) is converted to echo signal and is sent to described first SDH equipment 13; For described first SDH equipment 13 is sent and the echo signal that object is the first local area network (LAN) is converted to PDH signal, and be sent to described first equipment 11 by PDH interface;
Described first SDH equipment 13, for described conversion equipment 12 is sent and the echo signal that object is the second local area network (LAN) is converted to SDH signal is sent to described transmission network 14; For by transmit through described transmission network 14 and the SDH signal that object is the first local area network (LAN) is converted to echo signal is sent to described conversion equipment 12;
Described transmission network 14, for described first SDH equipment 13 is sent and object is that the SDH Signal transmissions of the second local area network (LAN) is to described second SDH equipment 15; For described second SDH equipment 15 is sent and object is that the SDH Signal transmissions of the first local area network (LAN) is to described first SDH equipment 13;
Described second SDH equipment 15, for by transmit through described transmission network 14 and the SDH signal that object is the second local area network (LAN) is converted to echo signal is sent to described second equipment 16; For described second equipment 16 is sent and the echo signal that object is the first local area network (LAN) is converted to SDH signal is sent to described transmission network 14;
Described second equipment 16, for described second SDH equipment 15 is sent and the echo signal that object is the second local area network (LAN) is converted to ethernet signal is sent to the second local area network (LAN); For by from second game's territory net and the ethernet signal that object is the first local area network (LAN) is converted to echo signal is sent to described second SDH equipment 15.
Here, between described first SDH equipment 13 and described conversion equipment 12, and between described second SDH equipment 15 and described second equipment 16, when transmission objectives signal, wire transmission mode can be adopted, such as communication bus, also wireless transmission method can be adopted, such as Wireless Fidelity (Wireless Fidelity, WiFi), below to adopt transmission echo signal to be described in detail.
Described first equipment 11 is by from first game territory net and the packet that object is the ethernet signal of the second local area network (LAN) carries out cyclic redundancy check (CRC) (Cyclic Redundancy Check, CRC), by wrong packet loss, retain correct packet, then preamble field and the SFD of the Ethernet of correct packet is removed, take out effective payload data and be cached to random access memory (Random Access Memory in this equipment, RAM) in, in RAM, Generic Framing Procedure (Generic Framing Procedure is adopted to effective payload data, GFP)/peer-peer protocol (Point-to-Point Protocol, PPP)/SDH Link Access Procedure (Link Access Procedure-SDH, LAPS) agreement encapsulates, finally use the clock of local crystal oscillator clock or PDH interface that the encapsulation of data of GFP/PPP/LAPS agreement is sent to PDH interface, now become PDH signal, described conversion equipment 12 is sent to through PDH interface, described first equipment 11 from by PDH interface to object be the encapsulation of data extracting GFP/PPP/LAPS agreement the PDH signal of the first local area network (LAN), be cached to after verifying in RAM, the encapsulated layer of GFP/PPP/LAPS agreement is peeled off in RAM, take out effective payload data, then insert preamble field and the SFD of Ethernet, revert to ethernet signal and be sent to the first local area network (LAN).
The echo signal that the object received by communication bus is the second local area network (LAN) is carried out low time slot cross connection by described first SDH equipment 13, then Higher Order Path Overhead, Administrative Unit Pointer and SDH section overhead is inserted, become SDH signal, be sent to described transmission network 14; By transmit through described transmission network 14 and object be the SDH signal of the first local area network (LAN) SDH section overhead peel off, Administrative Unit Pointer is made an explanation, peel off Higher Order Path Overhead, then low time slot cross connection is carried out, become echo signal, send to described conversion equipment 12 finally by communication bus.
Described second SDH equipment 15 by transmit through described transmission network 14 and object be the SDH signal of the second local area network (LAN) SDH section overhead peel off, Administrative Unit Pointer is made an explanation, peel off Higher Order Path Overhead, then low time slot cross connection is carried out, become echo signal, send to described second equipment 16 finally by communication bus; The echo signal being the first local area network (LAN) by the object received by communication bus carries out low time slot cross connection, then inserts Higher Order Path Overhead, Administrative Unit Pointer and SDH section overhead, becomes SDH signal, is sent to described transmission network 14.
The echo signal that the object received by communication bus is the second local area network (LAN) is carried out Tributary unit pointer explanation by described second equipment 16, take out lower order path overhead and C12/C3 container, carry out Virtual Concatenation process and link capacity adjustment, the encapsulated signal of then taking out GFP/PPP/LAPS agreement by byte boundary demapping from C12/C3 container carries out frame alignment and frame check, lose idle frame and wrong frame, then the encapsulated layer of the encapsulated signal of normal GFP/PPP/LAPS agreement is peeled off, take out effective payload data, insert preamble field and the SFD of Ethernet, become ethernet signal and be sent to the second local area network (LAN), by from second game's territory net and the packet that object is the ethernet signal of the first local area network (LAN) carries out CRC check, mistake bag is abandoned, retain correct packet, then preamble field and the SFD of the Ethernet of correct packet is removed, take out in the RAM that effective payload data is cached in this equipment, in RAM, adopt GFP/PPP/LAPS agreement to encapsulate to effective payload data, and encapsulated signal is loaded C12/C3 container by the mode that byte boundary maps, then Virtual Concatenation process and link capacity adjustment is carried out, insert path overhead and Tributary unit pointer, become echo signal, the second SDH equipment 15 is sent to finally by communication bus.
Preferably, described first equipment is Ethernet protocol transducer, and described second equipment is EOS equipment.
Fig. 2 is the structural representation of a specific embodiment of conversion equipment in the present invention.
Shown in Figure 2, the conversion equipment 12 in the system shown in Fig. 1 comprises: the first modular converter 121 and the second modular converter 122, and described first modular converter 121 is connected with described second modular converter 122, wherein,
Described first modular converter 121, for by by PDH interface to object be that the PDH signal of the second local area network (LAN) is converted to ethernet signal and is sent to described second modular converter 122; For described second modular converter 122 is sent and the ethernet signal that object is the first local area network (LAN) is converted to PDH signal, and be sent to described first equipment 11 by PDH interface;
Described second modular converter 122, for described first modular converter 121 is sent and the ethernet signal that object is the second local area network (LAN) is converted to echo signal is sent to described first SDH equipment 13; For described first SDH equipment 13 is sent and the echo signal that object is the first local area network (LAN) is converted to ethernet signal is sent to described first modular converter 121.
When the first local area network (LAN) communicates with the second local area network (LAN), when also communicating with other local area network (LAN) simultaneously or, second local area network (LAN) communicates with the first local area network (LAN), when also communicating with other local area network (LAN) simultaneously, then described conversion equipment also comprises multiplex roles link block 123 further, then described first modular converter 121 is connected by described multiplex roles link block 123 with described second modular converter 122, as shown in Figure 3.An interface of multiplex roles link block 123 is used for being connected with the first modular converter 121, and another interface is used for being connected with the second modular converter 122, and other interfaces are for being connected from the equipment of the signal of other local area network (LAN) or module with processing.
An embodiment, in described conversion equipment 12, described first modular converter 121 from by PDH interface to PDH signal extract the encapsulation of data of GFP/PPP/LAPS agreement, be cached in the RAM in this module after verifying, the encapsulated layer of GFP/PPP/LAPS agreement is peeled off in RAM, insert preamble field and the SFD of Ethernet, become ethernet signal, be sent to multiplex roles link block 123 by Media Independent Interface, the ethernet signal received is sent to the second modular converter 122 by described multiplex roles link block 123, the packet of the ethernet signal of reception is carried out CRC check by described second modular converter 122, mistake bag is abandoned, retain correct packet, then preamble field and the SFD of the Ethernet of correct packet is removed, take out in the RAM that effective payload data is cached in this module, in RAM, adopt GFP/PPP/LAPS agreement to encapsulate to effective payload data, and encapsulated signal is loaded C12/C3 container by the mode that byte boundary maps, then Virtual Concatenation process and link capacity adjustment is carried out, insert path overhead and Tributary unit pointer, become echo signal, described first SDH equipment 13 is sent to by communication bus.
Another embodiment, in described conversion equipment 12, the echo signal received by communication bus is carried out Tributary unit pointer explanation by described second modular converter 122, take out lower order path overhead and C12/C3 container, carry out Virtual Concatenation process and link capacity adjustment, the encapsulated signal of then taking out GFP/PPP/LAPS agreement by byte boundary demapping from C12/C3 container carries out frame alignment and frame check, lose idle frame and wrong frame, then the encapsulated layer of the encapsulated signal of normal GFP/PPP/LAPS agreement is peeled off, take out effective payload data, insert preamble field and the SFD of Ethernet, become ethernet signal, multiplex roles link block 123 is sent to by Media Independent Interface, the ethernet signal received is sent to the first modular converter 121 by described multiplex roles link block 123, the packet of the ethernet signal received is carried out CRC check by described first modular converter 121, mistake bag is abandoned, retain correct packet, then preamble field and the SFD of the Ethernet of correct packet is removed, take out in the RAM that effective payload data is cached in this module, in RAM, adopt GFP/PPP/LAPS agreement to encapsulate to effective payload data, finally use the clock of local crystal oscillator clock or PDH interface that the encapsulation of data of GFP/PPP/LAPS agreement is sent to PDH interface, it has been now PDH signal, described first equipment 11 is sent to by PDH interface.
Fig. 4 is the structural representation of the first modular converter in the embodiment of the present invention.
Shown in Figure 4, the first modular converter 121 shown in Fig. 2 or Fig. 3 comprises the first process submodule 41 and the second process submodule 42, wherein,
Described first process submodule 41, for by by PDH interface to object be that the PDH signal decapsulation of the second local area network (LAN) is taken out effective payload data and is sent to described second process submodule 42; For described second process submodule 42 is sent and effective payload data that object is the first local area network (LAN) is encapsulated as PDH signal, and be sent to described first equipment 11 by PDH interface;
Described second process submodule 42, inserts preamble field and the SFD of Ethernet, and is sent to described second modular converter 122 for processing that submodule 41 sends and that object is the second local area network (LAN) effective payload data by described first; For described second modular converter 122 is sent and object be the ethernet signal of the first local area network (LAN) frame head peel off, take out effective payload data be sent to described first process submodule 41.
Described first modular converter 121 also comprises further:
Separate frame framing submodule, for by PDH interface to and the PDH signal that object is the second local area network (LAN) is framed mode time, described PDH signal is carried out the process of solutions frame, and is sent to described first and processes submodule 41; For described first process submodule 41 is sent and the PDH signal that object is the first local area network (LAN) carries out framing processing, and be sent to described first equipment 11 by PDH interface.
Here, if described first equipment 11 send and the PDH signal that object is the second local area network (LAN) is transparent mode, then do not need to process through separating frame framing module.
Fig. 5 is the structural representation of the second modular converter in the embodiment of the present invention.
Shown in Figure 5, the second modular converter 122 shown in Fig. 2 or Fig. 3 comprises the 3rd process submodule 51 and the 4th process submodule 52, wherein,
Described 3rd process submodule 51, for described first modular converter 121 is sent and object be the ethernet signal of the second local area network (LAN) frame head peel off, take out effective payload data be sent to described 4th process submodule 52; Insert preamble field and the SFD of Ethernet for processing that submodule 52 sends and that object is the first local area network (LAN) effect payload data by the described 4th, and be sent to described first modular converter 121;
Described 4th process submodule 52, for described 3rd process submodule 51 is sent and effective payload data that object is the second local area network (LAN) is encapsulated as echo signal is sent to described first SDH equipment 13; For described first SDH equipment 13 is sent and the echo signal decapsulation that object is the first local area network (LAN) take out effective payload data be sent to described 3rd process submodule 51.
Below in conjunction with Fig. 6 and Fig. 7, the embodiment of the method in the present invention is described in detail.
When the first equipment that the first local area network (LAN) uses is for Ethernet protocol transducer, the second equipment that second local area network (LAN) uses is EOS equipment, and during from the first local area network (LAN) to the second local network transport ethernet signal, shown in Figure 6, the transmission method that the embodiment of the present invention provides comprises following step:
Step 601: Ethernet protocol transducer by from first game territory net and the ethernet signal that object is the second local area network (LAN) is converted to PDH signal, and is sent to conversion equipment by PDH interface.
Step 602: the PDH signal received is converted to echo signal and is sent to the first SDH equipment by described conversion equipment.
Here, described conversion equipment comprises protocol converter chip, Ethernet switching chip and EOS chip.Described protocol converter chip extracts the encapsulation of data of GFP/PPP/LAPS agreement from PDH signal, be cached in the RAM in this chip after verifying, the encapsulated layer of GFP/PPP/LAPS agreement is peeled off in RAM, insert preamble field and the SFD of Ethernet, become ethernet signal, be sent to Ethernet switching chip by Media Independent Interface, the ethernet signal of reception is sent to EOS chip by described Ethernet switching chip, the packet of the ethernet signal of reception is carried out CRC check by described EOS chip, mistake bag is abandoned, retain correct packet, then preamble field and the SFD of the Ethernet of correct packet is removed, take out in the RAM that effective payload data is cached in this chip, in RAM, adopt GFP/PPP/LAPS agreement to encapsulate to effective payload data, and encapsulated signal is loaded C12/C3 container by the mode that byte boundary maps, then Virtual Concatenation process and link capacity adjustment is carried out, insert path overhead and Tributary unit pointer, become echo signal and be sent to the first SDH equipment, when sending echo signal, wired mode can be adopted, such as communication bus, also wireless mode can be adopted, such as WiFi.
If the PDH signal that described conversion equipment receives is framed mode, then PDH signal is first carried out the process of solution frame by described protocol converter chip, from PDH signal, then extract the encapsulation of data of GFP/PPP/LAPS agreement.
Step 603: the echo signal received is converted to SDH signal and is sent to transmission network by described first SDH equipment, is transferred to the second SDH equipment through described transmission network.
Step 604: the SDH signal received is converted to echo signal and is sent to EOS equipment by described second SDH equipment.
Here, when sending echo signal, wired mode can be adopted, such as communication bus, also can adopt wireless mode, such as WiFi.
Step 605: the echo signal received is converted to ethernet signal and is sent to the second local area network (LAN) by described EOS equipment.
The first equipment used when the first local area network (LAN) is Ethernet protocol transducer, the second equipment that second local area network (LAN) uses is EOS equipment, and during from the second local area network (LAN) to the first local network transport ethernet signal, shown in Figure 7, the transmission method that the embodiment of the present invention provides comprises following step:
Step 701:EOS equipment is by from second game's territory net and the ethernet signal that object is the first local area network (LAN) is converted to echo signal is sent to the second SDH equipment.
Here, when sending echo signal, wired mode can be adopted, such as communication bus, also can adopt wireless mode, such as WiFi.
Step 702: the echo signal received is converted to SDH signal and is sent to transmission network by described second SDH equipment, is transferred to the first SDH equipment through described transmission network.
Step 703: the SDH signal received is converted to echo signal and is sent to conversion equipment by described first SDH equipment.
Here, when sending echo signal, wired mode can be adopted, such as communication bus, also can adopt wireless mode, such as WiFi.
Step 704: the echo signal received is converted to PDH signal by described conversion equipment, and be sent to Ethernet protocol transducer by PDH interface.
Here, described conversion equipment comprises EOS chip, Ethernet switching chip, protocol converter chip.The echo signal of reception is carried out Tributary unit pointer explanation by described EOS chip, take out lower order path overhead and C12/C3 container, carry out Virtual Concatenation process and link capacity adjustment, the encapsulated signal of then taking out GFP/PPP/LAPS agreement by byte boundary demapping from C12/C3 container carries out frame alignment and frame check, lose idle frame and wrong frame, then the encapsulated layer of the encapsulated signal of normal GFP/PPP/LAPS agreement is peeled off, take out effective payload data, insert preamble field and the SFD of Ethernet, become ethernet signal, Ethernet switching chip is sent to by Media Independent Interface, the ethernet signal of reception is sent to protocol converter chip by described Ethernet switching chip, the packet of the ethernet signal received is carried out CRC check by described protocol converter chip, mistake bag is abandoned, retain correct packet, then preamble field and the SFD of the Ethernet of correct packet is removed, take out in the RAM that effective payload data is cached in this chip, in RAM, adopt GFP/PPP/LAPS agreement to encapsulate to effective payload data, finally use the clock of local crystal oscillator clock or PDH interface that the encapsulation of data of GFP/PPP/LAPS agreement is sent to PDH interface, now become PDH signal, Ethernet protocol transducer is sent to by PDH interface.
Step 705: the PDH signal received is converted to ethernet signal and is sent to the first local area network (LAN) by described Ethernet protocol transducer.
As seen through the above technical solutions, the system of the intercommunication of a kind of local area network (LAN) provided in the embodiment of the present invention comprises the first equipment, conversion equipment, the first SDH equipment, transmission network, the second SDH equipment and second equipment with PDH interface, wherein, the first equipment is different with the host-host protocol of the second equipment.Utilize conversion equipment to connect the first equipment and the first SDH equipment, the PDH signal that the first equipment sends is converted to echo signal, then inputs the first SDH equipment; The echo signal that first SDH equipment sends is converted to PDH signal and is sent to the first equipment.Therefore, by conversion equipment, the intercommunication mutually used between the local area network (LAN) of the different equipment of host-host protocol can be realized, customer service is avoided to land, ensure that the safety of customer service, add the flexibility that ethernet device uses simultaneously, effectively reduce O&M cost.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if belong within the scope of the claims in the present invention and equivalent technologies thereof to these amendments of the present invention and modification, then the present invention is also intended to comprise these change and modification.
Claims (20)
1. a system for the intercommunication of local area network (LAN), is characterized in that, this system comprises the first equipment, conversion equipment, the first SDH (Synchronous Digital Hierarchy) SDH equipment, transmission network, the second SDH equipment and second equipment with PDH (Pseudo-synchronous Digital Hierarchy) PDH interface, wherein,
Described first equipment, for by from first game territory net and the ethernet signal that object is the second local area network (LAN) is converted to PDH signal, and is sent to described conversion equipment by PDH interface; For by by PDH interface to object be that the PDH signal of the first local area network (LAN) is converted to ethernet signal and is sent to the first local area network (LAN);
Described conversion equipment, for by by PDH interface to object be that the PDH signal of the second local area network (LAN) is converted to echo signal and is sent to described first SDH equipment; For described first SDH equipment is sent and the echo signal that object is the first local area network (LAN) is converted to PDH signal, and be sent to described first equipment by PDH interface;
Described first SDH equipment, for described conversion equipment is sent and the echo signal that object is the second local area network (LAN) is converted to SDH signal is sent to described transmission network; For by transmit through described transmission network and the SDH signal that object is the first local area network (LAN) is converted to echo signal is sent to described conversion equipment;
Described transmission network, for by described first SDH equipment send and object is that the SDH Signal transmissions of the second local area network (LAN) is to described second SDH equipment; For by described second SDH equipment send and object is that the SDH Signal transmissions of the first local area network (LAN) is to described first SDH equipment;
Described second SDH equipment, for by transmit through described transmission network and the SDH signal that object is the second local area network (LAN) is converted to echo signal is sent to described second equipment; For described second equipment is sent and the echo signal that object is the first local area network (LAN) is converted to SDH signal is sent to described transmission network;
Described second equipment, for described second SDH equipment is sent and the echo signal that object is the second local area network (LAN) is converted to ethernet signal is sent to the second local area network (LAN); For by from second game's territory net and the ethernet signal that object is the first local area network (LAN) is converted to echo signal is sent to described second SDH equipment;
Wherein, described first equipment comprises Ethernet protocol transducer, and described second equipment comprises Ethernet and is mapped to synchronous digital hierarchy EOS equipment.
2. the system as claimed in claim 1, is characterized in that, described conversion equipment comprises the first modular converter and the second modular converter, and described first modular converter is connected with described second modular converter, wherein,
Described first modular converter, for by by PDH interface to object be that the PDH signal of the second local area network (LAN) is converted to ethernet signal and is sent to described second modular converter; For described second modular converter is sent and the ethernet signal that object is the first local area network (LAN) is converted to PDH signal, and be sent to described first equipment by PDH interface;
Described second modular converter, for described first modular converter is sent and the ethernet signal that object is the second local area network (LAN) is converted to echo signal is sent to described first SDH equipment; For described first SDH equipment is sent and the echo signal that object is the first local area network (LAN) is converted to ethernet signal is sent to described first modular converter.
3. system as claimed in claim 2, it is characterized in that, described conversion equipment also comprises multiplex roles link block further, then described first modular converter is connected by described multiplex roles link block with described second modular converter.
4. system as claimed in claim 2, is characterized in that, described first modular converter comprises the first process submodule and the second process submodule, wherein,
Described first process submodule, for by by PDH interface to object be that the PDH signal decapsulation of the second local area network (LAN) is taken out effective payload data and is sent to described second process submodule; For described second process submodule is sent and effective payload data that object is the first local area network (LAN) is encapsulated as PDH signal, and be sent to described first equipment by PDH interface;
Described second process submodule, inserts preamble field and the SFD of Ethernet, and is sent to described second modular converter for processing that submodule sends and that object is the second local area network (LAN) effective payload data by described first; For by described second modular converter send and object be the ethernet signal of the first local area network (LAN) frame head peel off, take out effective payload data be sent to described first process submodule.
5. system as claimed in claim 4, it is characterized in that, described first modular converter also comprises further:
Separate frame framing submodule, for by PDH interface to object be the PDH signal of the second local area network (LAN) be framed mode time, described PDH signal is carried out the process of solutions frame, and is sent to described first and processes submodule; For described first process submodule is sent and the PDH signal that object is the first local area network (LAN) carries out framing processing, and be sent to described first equipment by PDH interface.
6. system as claimed in claim 2, is characterized in that, described second modular converter comprises the 3rd process submodule and the 4th process submodule, wherein,
Described 3rd process submodule, for by described first modular converter send and object be the ethernet signal of the second local area network (LAN) frame head peel off, take out effective payload data be sent to described 4th process submodule; Insert preamble field and the SFD of Ethernet for processing that submodule sends and that object is the first local area network (LAN) effective payload data by the described 4th, and be sent to described first modular converter;
Described 4th process submodule, for described 3rd process submodule is sent and effective payload data that object is the second local area network (LAN) is encapsulated as echo signal is sent to described first SDH equipment; For by described first SDH equipment send and the echo signal decapsulation that object is the first local area network (LAN) take out effective payload data be sent to described 3rd process submodule.
7. a conversion equipment, is applied to system according to claim 1, it is characterized in that, this conversion equipment comprises the first modular converter and the second modular converter, and described first modular converter is connected with described second modular converter, wherein,
Described first modular converter, for by by PDH (Pseudo-synchronous Digital Hierarchy) PDH interface to object be that the PDH signal of the second local area network (LAN) is converted to ethernet signal and is sent to described second modular converter; For described second modular converter is sent and the ethernet signal that object is the first local area network (LAN) is converted to PDH signal, and be sent to the first equipment by PDH interface; Wherein, described first equipment comprises Ethernet protocol transducer;
Described second modular converter, for described first modular converter is sent and the ethernet signal that object is the second local area network (LAN) is converted to echo signal is sent to the first SDH (Synchronous Digital Hierarchy) SDH equipment; For described first SDH equipment is sent and the echo signal that object is the first local area network (LAN) is converted to ethernet signal is sent to described first modular converter.
8. conversion equipment as claimed in claim 7, it is characterized in that, this conversion equipment also comprises multiplex roles link block further, then described first modular converter is connected by described multiplex roles link block with described second modular converter.
9. conversion equipment as claimed in claim 7, is characterized in that, described first modular converter comprises the first process submodule and the second process submodule, wherein,
Described first process submodule, for by by PDH interface to object be that the PDH signal decapsulation of the second local area network (LAN) is taken out effective payload data and is sent to described second process submodule; For described second process submodule is sent and effective payload data that object is the first local area network (LAN) is encapsulated as PDH signal, and be sent to the first equipment by PDH interface;
Described second process submodule, inserts preamble field and the SFD of Ethernet, and is sent to described second modular converter for processing that submodule sends and that object is the second local area network (LAN) effective payload data by described first; For by described second modular converter send and object be the ethernet signal of the first local area network (LAN) frame head peel off, take out effective payload data be sent to described first process submodule.
10. conversion equipment as claimed in claim 9, it is characterized in that, described first modular converter also comprises further:
Separate frame framing submodule, for by PDH interface to object be the PDH signal of the second local area network (LAN) be framed mode time, described PDH signal is carried out the process of solutions frame, and is sent to described first and processes submodule; For described first process submodule is sent and the PDH signal that object is the first local area network (LAN) carries out framing processing, and be sent to the first equipment by PDH interface.
11. conversion equipments as claimed in claim 7, is characterized in that, described second modular converter comprises the 3rd process submodule and the 4th process submodule, wherein,
Described 3rd process submodule, for by described first modular converter send and object be the ethernet signal of the second local area network (LAN) frame head peel off, take out effective payload data be sent to described 4th process submodule; Insert preamble field and the SFD of Ethernet for processing that submodule sends and that object is the first local area network (LAN) effective payload data by the described 4th, and be sent to described first modular converter;
Described 4th process submodule, for described 3rd process submodule is sent and effective payload data that object is the second local area network (LAN) is encapsulated as echo signal is sent to the first SDH equipment; For by described first SDH equipment send and the echo signal decapsulation that object is the first local area network (LAN) take out effective payload data be sent to described 3rd process submodule.
The method of the intercommunication of 12. 1 kinds of local area network (LAN)s, be applied to the system comprising the first equipment, conversion equipment, the first SDH (Synchronous Digital Hierarchy) SDH equipment, transmission network, the second SDH equipment and second equipment with PDH (Pseudo-synchronous Digital Hierarchy) PDH interface, it is characterized in that, the method comprises:
Described first equipment by from first game territory net and the ethernet signal that object is the second local area network (LAN) is converted to PDH signal, and is sent to described conversion equipment by PDH interface;
The PDH signal received is converted to echo signal and is sent to described first SDH equipment by described conversion equipment;
The echo signal received is converted to SDH signal and is sent to described transmission network by described first SDH equipment, is transferred to described second SDH equipment through described transmission network;
The SDH signal received is converted to echo signal and is sent to described second equipment by described second SDH equipment;
The echo signal received is converted to ethernet signal and is sent to the second local area network (LAN) by described second equipment;
Wherein, described first equipment comprises Ethernet protocol transducer, and described second equipment comprises Ethernet and is mapped to synchronous digital hierarchy EOS equipment.
13. methods as claimed in claim 12, it is characterized in that, the PDH signal received is converted to echo signal by described conversion equipment, comprising:
The PDH signal received is converted to ethernet signal by described conversion equipment;
Described ethernet signal is converted to echo signal.
14. methods as claimed in claim 13, is characterized in that, the PDH signal received is converted to ethernet signal, comprises:
Effective payload data is taken out in the PDH signal decapsulation received;
Described effective payload data is inserted preamble field and the SFD of Ethernet.
15. methods as claimed in claim 13, is characterized in that, described ethernet signal is converted to echo signal, comprises:
The frame head of described ethernet signal is peeled off, takes out effective payload data;
Described effective payload data is encapsulated as echo signal.
16. methods as claimed in claim 12, it is characterized in that, the method also comprises further:
If the PDH signal that described conversion equipment receives is framed mode, then described PDH signal is first carried out the process of solution frame by described conversion equipment, is then converted to echo signal.
The method of the intercommunication of 17. 1 kinds of local area network (LAN)s, be applied to the system comprising the first equipment, conversion equipment, the first SDH (Synchronous Digital Hierarchy) SDH equipment, transmission network, the second SDH equipment and second equipment with PDH (Pseudo-synchronous Digital Hierarchy) PDH interface, it is characterized in that, the method comprises:
Described second equipment is by from second game's territory net and the ethernet signal that object is the first local area network (LAN) is converted to echo signal is sent to described second SDH equipment;
The echo signal received is converted to SDH signal and is sent to described transmission network by described second SDH equipment, is transferred to described first SDH equipment through described transmission network;
The SDH signal received is converted to echo signal and is sent to described conversion equipment by described first SDH equipment;
The echo signal received is converted to PDH signal by described conversion equipment, and is sent to described first equipment by PDH interface;
The PDH signal received is converted to ethernet signal and is sent to the first local area network (LAN) by described first equipment;
Wherein, described first equipment comprises Ethernet protocol transducer, and described second equipment comprises Ethernet and is mapped to synchronous digital hierarchy EOS equipment.
18. methods as claimed in claim 17, it is characterized in that, the echo signal received is converted to PDH signal by described conversion equipment, comprising:
The echo signal received is converted to ethernet signal by described conversion equipment;
Described ethernet signal is converted to PDH signal.
19. methods as claimed in claim 18, is characterized in that, the echo signal received is converted to ethernet signal, comprises:
Effective payload data is taken out in the echo signal decapsulation received;
Described effective payload data is inserted preamble field and the SFD of Ethernet.
20. methods as claimed in claim 18, is characterized in that, described ethernet signal is converted to PDH signal, comprises:
The frame head of described ethernet signal is peeled off, takes out effective payload data;
Described effective payload data is encapsulated as PDH signal.
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| CN107770101B (en) * | 2016-08-15 | 2021-07-16 | 中兴通讯股份有限公司 | Method and device for encapsulating Generic Framing Procedure (GFP) frame in Field Programmable Gate Array (FPGA) |
| CN107979563B (en) * | 2016-10-21 | 2019-05-17 | 视联动力信息技术股份有限公司 | A kind of information processing method and device based on view networking |
| CN113316037B (en) * | 2017-05-02 | 2022-08-09 | 华为技术有限公司 | Method, equipment and system for carrying service |
| CN112634885A (en) * | 2020-05-18 | 2021-04-09 | 北京如影智能科技有限公司 | Voice wake-up method and device for cross-local area network |
| CN112636835A (en) * | 2020-12-16 | 2021-04-09 | 中国联合网络通信集团有限公司 | Service transmission method and device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1440163A (en) * | 2002-02-22 | 2003-09-03 | 阿尔卡塔尔公司 | Ethernet service enhancing transmission by SDH/SONET net |
| CN1791075A (en) * | 2004-12-17 | 2006-06-21 | 华为技术有限公司 | Device for realizing network fusion and its method |
| CN1860736A (en) * | 2003-10-13 | 2006-11-08 | 艾利森电话股份有限公司 | Transport of ether net frames over SDH network |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050111370A1 (en) * | 2001-12-12 | 2005-05-26 | Ron Cohen | Method and system for replacing lost or delayed data in sonet/sdh emulation protocols |
-
2011
- 2011-12-31 CN CN201110460607.4A patent/CN102437944B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1440163A (en) * | 2002-02-22 | 2003-09-03 | 阿尔卡塔尔公司 | Ethernet service enhancing transmission by SDH/SONET net |
| CN1860736A (en) * | 2003-10-13 | 2006-11-08 | 艾利森电话股份有限公司 | Transport of ether net frames over SDH network |
| CN1791075A (en) * | 2004-12-17 | 2006-06-21 | 华为技术有限公司 | Device for realizing network fusion and its method |
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