CN106850465B

CN106850465B - A kind of Flex E method for interchanging data and switching equipment

Info

Publication number: CN106850465B
Application number: CN201611228654.5A
Authority: CN
Inventors: 杨鸿�
Original assignee: HiSilicon Technologies Co Ltd
Current assignee: HiSilicon Technologies Co Ltd
Priority date: 2016-12-27
Filing date: 2016-12-27
Publication date: 2019-10-25
Anticipated expiration: 2036-12-27
Also published as: CN106850465A

Abstract

The invention discloses a kind of Flex E method for interchanging data and switching equipment, method includes: that switching equipment receives at least one Flex E reception data frame that sending ending equipment is sent；Each Flex E is received the data carried on each time slot in data frame to be divided into using the corresponding source channels number of the timeslot number of each time slot as the data group of index；According to the corresponding relationship of preset source channels number and place channel number, it is mapped to by different source channels number by not chummage channel number as the data in the data group of index as the data group of index；Using any place channel number as the data of the data group of index, at least one the Flex E for being respectively mapped to be sent to receiving device is sent in the corresponding time slot of sending time slots number in data frame, corresponding with any place channel number.Compared with the existing technology, data packet processing, forwarding are eliminated, Flex E business propagation delay time is reduced.

Description

A kind of Flex E method for interchanging data and switching equipment

Technical field

The present invention relates to wireless communication technology field more particularly to a kind of Flex E method for interchanging data and switching equipment.

Background technique

Flex Ethernet Project (flexible Ethernet has been issued on the quarterly meeting of 2015 optical interconnection forum OIF Project), a kind of more flexible Ethernet of this project definition reaches foundation and faster connects to make full use of the capacity of light connects The purpose connect.Flex Ethernet is on the basis of ethernet ieee standard, and introduction passage technology optimizes Ethernet, The decoupling of MAC rate and IEEE Ethernet physical interface standards is realized, in favor of the independent evolution of ethernet mac rate.

According to Flex E service protocol, the data format of Flex E business datum is in original Ethernet message data format On the basis of be further added by encapsulation format as defined in one layer of Flex E agreement.For example, the protocol layer mark that Flex E business datum carries Know information includes Flex E mark, source MAC, destination-mac address and IP address from outside to inside, wherein Flex E is identified as Equipment room transmits the channel number of the logical channel of Flex E business datum, and different channel numbers is for distinguishing different Flex E industry Business data.

In a kind of transmission scene of Flex E business, A equipment is not to B device transparent data, but A equipment is set by exchange Standby C transmits Flex E business datum to B device, if, A equipment and B device all support Flex E business, and switching equipment C is not propped up Holding Flex E business will be according to Flex E business after switching equipment C receives the Flex E business datum of A equipment transmission The data format of data parses layer by layer, first removes encapsulation format as defined in Flex E agreement, obtains ether network packet, then parse Source MAC and destination-mac address in Ethernet message format out reflects ether network packet then according to destination-mac address Data packet is penetrated into, the forward process of data packet is carried out.B device receives multiple data packets of switching equipment transmission, to receiving Ether data packet carry out unpacking and handle to obtain ether network packet, further according to encapsulation format as defined in Flex E agreement to Ethernet Message is packaged, and recovers Flex E business datum.

On the one hand, Flex E agreement regulation is increased relative to the data format of ether network packet because of Flex E business datum Encapsulation format, switching equipment obtain ether network packet, according to ether network packet forward process process carry out data forwarding Before, also encapsulation format as defined in Flex E agreement is parsed；On the other hand, receiving device is to the ether received Data packet carries out unpacking and handles after obtaining ether network packet, will also be according to encapsulation format as defined in Flex E agreement to Ethernet Message is packaged, and recovers Flex E business datum, and therefore, the data transmission delay of Flex E business is larger.

To sum up, in the prior art, it for the switching equipment for not supporting Flex E business, is handed over according to existing Ethernet packet The mode changed carries out Flex E business data transmission, and there are biggish delays.

Summary of the invention

The embodiment of the present invention provides a kind of Flex E method for interchanging data and switching equipment, hands in the prior art for solving Exchange device do not support under the application scenarios of Flex E business, the big technical problem of the data transmission delay of Flex E business.

In a first aspect, the embodiment of the present invention provides a kind of Flex E method for interchanging data, which comprises

Switching equipment receives at least one Flex E that sending ending equipment is sent and receives data frame；

The switching equipment obtains the reception timeslot number that each Flex E receives data frame, and according to preset reception time slot Each Flex E is received the data carried on each time slot in data frame and is divided into every by the corresponding relationship number with source channels number In data group of the corresponding source channels number of the timeslot number of a time slot as index；Wherein, different source channels number are corresponding not homologous logical Road, different source channels are used for transmission the logical channel of data between the switching equipment and the sending ending equipment；

The switching equipment, will be by different source channels number point according to the corresponding relationship of preset source channels number and place channel number It is not mapped to by not chummage channel number as the data in the data group of index respectively as in the data group of index；Wherein, no The corresponding not chummage channel of chummage channel number, chummage channel is not used for transmission data between the switching equipment and receiving device Logical channel；

The switching equipment makees any place channel number according to the corresponding relationship of preset place channel number and sending time slots number For the data of the data group of index, at least one the Flex E for being respectively mapped to be sent to the receiving device sends data frame In, in the corresponding time slot of corresponding with any place channel number sending time slots number.

In above-described embodiment, after switching equipment receives each Flex E reception data frame, according to source channels number When with the corresponding relationship and source channels number of reception timeslot number and the corresponding relationship and place channel number of place channel number with sending The corresponding relationship of gap number receives the data carried on each time slot in data frame to Flex E and divides, and by the number of division It is sent in the corresponding time slot of each sending time slots number of data frame according to Flex E is respectively mapped to according to above-mentioned corresponding relationship, thus Realize that Flex E reception data frame, which is converted at least one Flex E, sends data frame, relative to existing switching equipment by Flex E receives data frame analyzing into common ether network packet, carries out the repeating process of common Ethernet message, eliminates the number of switching equipment It is handled according to packet, packet forwarding process, reduces the delay of Flex E data exchange.

Further, each Flex E is received to the data carried on each time slot in data frame in the switching equipment to draw Before assigning in using the corresponding source channels number of the timeslot number of each time slot as the data group of index, further includes: obtain each Flex E receives the corresponding source clock signal frequency of data frame；The source clock signal frequency is transformed into the switching equipment On clock domain.

In above-mentioned alternative embodiment, received Flex E is received data frame and carries out clock synchronization process by switching equipment, really It protects every Flex E reception data frame and carries out data exchange under same clock signal frequency benchmark, prevent from different transmissions The Flex E of end equipment receive data frame because clock domain difference caused by the shake transmitted of data.

Optionally, the source clock signal frequency is transformed on the clock domain of the switching equipment, comprising:

Each Flex E is received the data carried in each time slot in data frame to write according to the source clock signal frequency Enter in the writing station for change over clock domain；According to the clock signal frequency of the switching equipment, said write device is read Middle data be written.

Optionally, each Flex E that the switching equipment receives receives data frame and carries unique Flex E mark Know；Each Flex E that the switching equipment is sent sends data frame and carries unique Flex E mark.

In above-mentioned alternative embodiment, each Flex E that the switching equipment receives receives data frame and carries uniquely Flex E mark distinguishes any one the Flex E received convenient for switching equipment and receives data frame；It is sent to receiving device Each Flex E sends data frame and carries Flex E mark, any one the Flex E received is distinguished convenient for receiving device and is sent Data frame.

Optionally, the switching equipment using any place channel number as the data in the data group of index according to n batch, When being respectively mapped to that one of Flex E is received in data frame, sending time slots number corresponding with any place channel number are corresponding In gap；Wherein, n is the positive integer greater than 1, and the data total bytes of preceding n-1 batch mapping are identical, the number of n-th of batch mapping It is less than or equal to the data total bytes of (n-1)th batch mapping according to total bytes.In above-mentioned alternative embodiment, each batch is reflected The data penetrated are equivalent to a minimum exchange particle, and the total bytes of each minimum exchange particle are according to an embodiment of the present invention The performance requirement of Flex E exchange system determines.

In above-mentioned alternative embodiment, because the total bytes of each minimum exchange particle are identical, it is equivalent to switching equipment progress The average delay of data exchange is mapping duration of each minimum exchange particle, compared with the existing technology in switching equipment by one A ethernet data frame is converted into multiple payloads data packet of different sizes and carries out for shake brought by data exchange, this n The average delay of a minimum exchange particle, less than the maximum delay of each data packet, therefore switching equipment is sent out to receiving device The shake for giving any one Flex E to send data frame is fairly small.

Second aspect, the embodiment of the present invention provide a kind of switching equipment, and the switching equipment includes:

Transmit-Receive Unit, at least one Flex E for receiving sending ending equipment transmission receive data frame；

Processing unit receives the reception timeslot number of data frame for obtaining each Flex E, and when according to preset reception The corresponding relationship of gap number and source channels number, by each Flex E receive the data carried on each time slot in data frame be divided into In data group of the corresponding source channels number of the timeslot number of each time slot as index；Wherein, different source channels number correspondences are not homologous Channel, different source channels are used for transmission the logical channel of data between the switching equipment and the sending ending equipment；And

Processing unit is also used to, will be by different source channels according to the corresponding relationship of preset source channels number and place channel number It number is mapped to by not chummage channel number respectively as the data in the data group of index respectively as in the data group of index；Its In, chummage channel number does not correspond to not chummage channel, and chummage channel is not between the switching equipment and receiving device for passing The logical channel of transmission of data；And

Processing unit is also used to, according to the corresponding relationship of preset place channel number and sending time slots number, by any Su Tongdao Number as index data group data, at least one the Flex E for being respectively mapped to be sent to the receiving device sends number According in the corresponding time slot of in frame, corresponding with any place channel number sending time slots number.

Further, the processing unit is also used to carry on each time slot in each Flex E reception data frame Data be divided into using the corresponding source channels number of the timeslot number of each time slot as the data group of index before, obtain each Flex E receives the corresponding source clock signal frequency of data frame；And the source clock signal frequency is transformed into the exchange and is set On standby clock domain.

Optionally, the processing unit, for each Flex E to be received the data carried in each time slot in data frame According to source clock signal frequency write-in in the writing station in change over clock domain；And according to the switching equipment when Clock signal frequency reads the data being written in said write device.

Optionally, the switching equipment using any place channel number as the data in the data group of index according to n batch, When being respectively mapped to that one of Flex E is received in data frame, sending time slots number corresponding with any place channel number are corresponding In gap；Wherein, n is the positive integer greater than 1, and the data total bytes of preceding n-1 batch mapping are identical, the number of n-th of batch mapping It is less than or equal to the data total bytes of (n-1)th batch mapping according to total bytes.

In above-mentioned alternative embodiment, the data of each batch mapping are equivalent to a minimum exchange particle, each minimum friendship The performance requirement for changing the total bytes Flex E exchange system according to an embodiment of the present invention of particle determines.Because of each minimum exchange The total bytes of particle are identical, and being equivalent to switching equipment and carrying out the average delay of data exchange is each minimum exchange particle Duration is mapped, an ethernet data frame is converted multiple payloads number of different sizes by middle switching equipment compared with the existing technology It is carried out for shake brought by data exchange according to packet, the average delay of this n minimum exchange particle, less than each data packet Maximum delay, therefore the shake that switching equipment sends any one Flex E transmission data frame to receiving device is fairly small.

The third aspect, the embodiment of the present invention provide a kind of switching equipment, and the switching equipment includes: processor, transceiver And memory；

For storing instruction, the processor is used for according to the instruction for executing the memory storage memory, and It controls the transceiver and carries out signal reception and signal transmission, when the processor executes the instruction of the memory storage,

The transceiver is used to execute: receiving at least one Flex E that sending ending equipment is sent and receives data frame；

The processor, for executing: obtaining the reception timeslot number that each Flex E receives data frame, and according to preset Each Flex E is received the data carried on each time slot in data frame and drawn by the corresponding relationship for receiving timeslot number and source channels number It assigns in using the corresponding source channels number of the timeslot number of each time slot as the data group of index；Wherein, different source channels correspondences Different source channels, the logic that different source channels are used for transmission data between the switching equipment and the sending ending equipment are logical Road；And

According to the corresponding relationship of preset source channels number and place channel number, using by different source channels number as index Data in data group are mapped to by not chummage channel number respectively as in the data group of index；Wherein, not chummage channel number pair Not chummage channel is answered, chummage channel is not used for transmission the logical channel of data between the switching equipment and receiving device； And

According to the corresponding relationship of preset place channel number and sending time slots number, using any place channel number as the data of index The data of group, be respectively mapped to be sent to the receiving device at least one Flex E send it is in data frame, with this In the corresponding time slot of the corresponding sending time slots number of one night channel number.

Further, the processor is also used to execute: holding on each time slot receiving each Flex E in data frame Before the data of load are divided into using the corresponding source channels number of the timeslot number of each time slot as the data group of index, obtain each Flex E receives the corresponding source clock signal frequency of data frame；And

The source clock signal frequency is transformed on the clock domain of the switching equipment.

Optionally, the processor, for executing: each Flex E is received to the number carried in each time slot in data frame It is used in the writing station in change over clock domain according to according to source clock signal frequency write-in；And

According to the clock signal frequency of the switching equipment, the data being written in said write device are read.

Detailed description of the invention

Fig. 1 is a kind of system architecture diagram of transmission network provided in an embodiment of the present invention；

Fig. 2 is a kind of structural schematic diagram of OSI Reference Model provided in an embodiment of the present invention；

Fig. 3 is a kind of Flex Ethernet system architecture diagram provided in an embodiment of the present invention；

Fig. 4 is a kind of flow diagram of Flex E method for interchanging data provided in an embodiment of the present invention；

Fig. 5 is a kind of structural representation of source channels number and the cross-over configuration relationship of place channel number provided in an embodiment of the present invention Figure；

Fig. 6 is a kind of place channel number B2 provided in an embodiment of the present invention as the data and Su Tongdao in the data group of index Mapping relations schematic diagram number between B2 corresponding sending time slots S2, S5, S79；

Fig. 7 is a kind of place channel number B3 provided in an embodiment of the present invention as the data and Su Tongdao in the data group of index Mapping relations schematic diagram number between B3 corresponding sending time slots S4, S78；

Fig. 8 is the schematic diagram synchronous to any Flex E reception data frame progress clock provided in an embodiment of the present invention；

Fig. 9 is a kind of processing flow schematic diagram of the mixed service comprising Flex E business provided in an embodiment of the present invention；

Figure 10 is a kind of structural schematic diagram of switching equipment provided in an embodiment of the present invention；

Figure 11 is a kind of structural schematic diagram of switching equipment provided in an embodiment of the present invention.

Specific embodiment

With reference to the accompanying drawing, the embodiment of the present invention is described.

Fig. 1 is a kind of transmission network architecture provided in an embodiment of the present invention, and the transmission including being directly accessed transmission network is set It is standby, such as transmission equipment 1, transmission equipment 2,3 transmission equipment 4 of transmission equipment and transmission equipment 5, and the biography of access transmission network indirectly Equipment is sent, such as transmission equipment 6, transmission equipment 7, transmission equipment 8, transmission equipment 9 and transmission equipment 10.Transmission network therein includes Ethernet and OTN net.

When transmission network is Ethernet, these switching equipment are according to International Organization for standardization (ISO, International Organization for Standardization) Open System Interconnection (OSI, Open System Interconnect) association (Open System Interconnect Reference Model, Open System Interconnection refer to mould to the OSI Reference Model of view stack Type, abbreviation OSI Reference Model), it is grouped data exchange.OSI Reference Model is communication protocol, including 7 layers of abstract reference Model, wherein each layer executes a certain particular task.The purpose of OSI Reference Model is to make various hardware phase on identical level Mutual communication.This 7 layers by lower and upper including physical layer, data link layer, network layer, transport layer, session layer, expression layer and application Layer.For physical layer and data link layer, switching equipment is mainly ethernet PHY and ethernet mac (Media Access Control, media access control) it is grouped data exchange, abbreviation packet switch, this transmission business is referred to as general data industry Business.

Another transmission network is optical transfer network (OTN, Optical Transport Network, letter based on wavelength-division multiplex Claim OTN net), OTN data are mapped in multiple Optical Channel Data Unit-k and carry out transmission exchange, abbreviation ODUK switching technology utilizes The data service of optical transfer network transmission is referred to as OTN data service.

In order to promote data exchange capability, it is based on above-mentioned architecture, the embodiment of the present invention provides a kind of flexible Ethernet System architecture, abbreviation Flex Ethernet system architecture, Flex Ethernet system architecture also include Fig. 1 transmission network basis system These transmission equipments in system framework.These transmission equipments are other than supporting ordinary data traffic or OTN data service, also Support Flex E business.Flex E business refers to the data service for meeting Flex E agreement, and Flex E agreement is in former communication protocols The agreement newly increased in view, the core of Flex E agreement are that a protocol layer is newly increased between physical layer and data link layer, This protocol layer is properly termed as flexible ethernet channel layer, as shown in Fig. 2, increasing the OSI Reference Model packet of Flex E agreement 8 layers are included, this 8 layers by lower and upper including physical layer, flexible ethernet channel layer, data link layer, network layer, transport layer, speech channel Layer, expression layer and application layer.

For a transmission equipment, the functional interface for meeting Flex E agreement only need to be encapsulated within hardware, i.e., It can support Flex E business.If two transmission equipments all support Flex E business, two transmission equipments can be carried out directly The data exchange of flexible ethernet channel interlayer, such data directly carry out transparent transmission, Jin Erti in flexible ethernet channel interlayer Rise the data exchange capability of transmission equipment.Based on flexible ethernet channel layer carry out data exchange transmission equipment be referred to as flexibly with The too direct-connected transmission equipment of Netcom's channel layer.As shown in figure 3, transmission equipment (the biography in such as Fig. 3 that flexible ethernet channel layer is direct-connected Send equipment 1 to transmission equipment 10) constitute Flex Ethernet system.For example, the transmission equipment 10 in Fig. 3 is set to transmission When standby 1 transmission Flex E business datum, directly the Flex E business datum that flexible ethernet channel layer to be sent is mapped to In the flexible ethernet channel layer of transmission equipment 1.

According to the core concept of Flex E agreement, in order to improve data exchange capability, flexible ethernet channel layer can be drawn It is divided into multiple transmission channels, each receivable data volume size of transmission channel is unlimited, can be according to the number of each transmission channel It is that each transmission channel distributes suitable network bandwidth according to amount size.Therefore, the flexible ethernet channel layer of transmission equipment is suitable In multiple data transmission channels.When two transmission equipments carry out the data penetration transmission of ethernet channel layer, transmission equipment The data of multiple data transmission channels map directly in multiple data transmission channels of another transmission equipment.

In Flex Ethernet system architecture, a plurality of transmission path is constituted between multiple transmission equipments, these transmission are set The standby interchanger that can be access transmission network, is also possible to the router connecting with interchanger, these transmission equipments are as network element When having data exchanging function, switching equipment can be referred to as.

But Flex Ethernet system architecture is ideal system framework, the friendship in the system architecture of current transmission net Exchange device not necessarily all supports Flex E business.Those are only supported with exchange of original communication protocol without supporting Flex E business Equipment, it is internal also without encapsulating flexible ether Netcom because that cannot identify Flex E agreement when receiving Flex E business datum Channel layer, it is then not possible to carry out the data penetration transmission of flexible ethernet channel interlayer, number can only be grouped according to original communication protocol According to exchange, i.e., after being parsed Flex E business datum, it is converted into Ethernet data bag, mesh is sent in a manner of packet switch Marking device.But such as the content that background technology part illustrates, switching equipment do not support to deposit under the application scenarios of Flex E business In the big problem of the data transmission delay of Flex E business.Do not support the application scenarios of Flex E business for switching equipment, this Inventive embodiments provide a kind of Flex E method for interchanging data, to reach the transmission for reducing Flex E business in above-mentioned application scenarios The purpose of time delay.

It should be noted that the data format of Flex E business is Flex E data frame, and for sending ending equipment, hair The Flex E business datum sent is that Flex E sends data frame.For receiving device, the Flex E business number that receives Data frame is received according to for Flex E.Switching equipment in the embodiment of the present invention is the transmission equipment for not supporting Flex E business, but With following data function of exchange: the switching equipment receives the Flex E business datum that the sending ending equipment of upstream is sent, i.e., Flex E receives data frame, and Flex E is received data frame and is converted into Flex E according to the method for interchanging data of the embodiment of the present invention Data frame is sent, and Flex E transmission data frame is sent to the receiving device in downstream.

For the sending ending equipment of upstream, the transmission equipment for supporting Flex E business can be, being also possible to can be according to The method for interchanging data of the embodiment of the present invention sends the transmission equipment that Flex E sends data frame.The receiving end in downstream is set It is standby, it can be the transmission equipment for supporting Flex E business, being also possible to can be according to the method for interchanging data of the embodiment of the present invention Send the transmission equipment that Flex E sends data frame.

In order to make switching equipment in the case where nonrecognition Flex E receives data frame, moreover it is possible to which Flex E is received number Flex E, which is converted into, according to frame sends data frame.The embodiment of the present invention constructs similar flexible ethernet channel layer in switching equipment Functional module enables these functional modules to have and converts the function that Flex E sends data frame for Flex E reception data frame Energy.

Based on the core concept of Flex E agreement, Flex E reception data frame is reflected in a manner of channel in order to realize It penetrates, i.e., will receive data frame distribution from Flex E in multiple channels, and be based on this, and receive data frame without parsing Flex E Flex E need to only be received the data in each time slot of data frame from a channel map by MAC layer information (such as destination-mac address) To another channel, Flex E can be received to data frame and be converted into Flex E transmission data frame.

The embodiment of the present invention is started with from the receiving port and sending port of switching equipment, is constructed and is sent by receiving port The logical channel that data are transmitted between end equipment, by the logical channel for transmitting data between sending port building and receiving device. For ease of description, the logical channel that data are used for transmission between switching equipment and sending ending equipment is defined as source channels, it will The logical channel that data are used for transmission between switching equipment and receiving device is defined as Su Tongdao.

Specifically, the building mode of source channels are as follows: multiple reception time slots of receiving port are divided into multiple source channels, often A source channels are identified as source channels number, and the corresponding relationship of timeslot number and source channels number is received by presetting, is equivalent to Multiple source channels have been constructed in advance.As long as obtaining multiple reception timeslot numbers that a Flex E receives data frame, so that it may will The Flex E receives data frame and is mapped in the corresponding source channels of reception timeslot number.

Secondly, the building mode of Su Tongdao are as follows: multiple sending time slots of sending port are divided into multiple Su Tongdao, each Su Tongdao's is identified as place channel number, by presetting the corresponding relationship of sending time slots number with place channel number, is equivalent to pre- Multiple Su Tongdao are first constructed.As long as place is logical to be mapped data, so that it may according to pair of place channel number and sending time slots number It should be related to, the data in Su Tongdao are mapped in the corresponding sending time slots of place channel number, to be mapped according in sending time slots Data obtain Flex E receive data frame.

In addition, the data in multiple source channels are mapped in multiple Su Tongdao in order to realize, it is also necessary to preset source Cross-over configuration relationship between channel number and place channel number, and then the data being divided into each source channels are mapped to corresponding In Su Tongdao.

Therefore, the functional module of the switching equipment setting of the embodiment of the present invention is at least with the following functions:

Memory module is previously stored with the corresponding relationship for receiving timeslot number and source channels number, source channels number and place channel number Corresponding relationship and place channel number and receive timeslot number between corresponding relationship；

Receiving module receives Flex E and receives data frame；

Processing module obtains the reception timeslot number that Flex E receives data frame, according to reception timeslot number and source channels number Data in each time slot are divided into multiple data groups, the corresponding source channels number of each data group by corresponding relationship；

Processing module reflects the corresponding data group of source channels number also according to the corresponding relationship of source channels number and place channel number Penetrate the corresponding data group of channel number all night；

Processing module also according to place channel number and receives the corresponding relationship between timeslot number, by the corresponding number of place channel number It is mapped to according to group in the sending time slots of corresponding sending time slots number.

In addition, switching equipment, which receives multiple Flex E, receives data frame, in order to make switching equipment distinguish different Flex E Data frame is received, each Flex E, which receives data frame, should carry a Flex E mark, and the Flex E for distinguishing different connects Receive data frame.

In addition, channel number corresponding data group in place is being mapped to corresponding transmission in order to reduce shake when data exchange It when in the sending time slots of timeslot number, is mapped according to multiple batches, and the size of the data group of each batch mapping is identical.

Foregoing invention design through the embodiment of the present invention, if having pre-established source channels number in switching equipment and having connect Receive the corresponding relationship of timeslot number, source channels number and the corresponding relationship of place channel number and pair of place channel number and sending time slots number It should be related to, switching equipment is every in data frame according to receiving to Flex E after receiving each Flex E and receiving data frame The data carried on a time slot are divided, and the data of division are respectively mapped to Flex E according to above-mentioned corresponding relationship and are sent In the corresponding time slot of each sending time slots number of data frame, Flex E reception data frame is converted at least one to realize Flex E sends data frame, and Flex E is received data frame analyzing into common ether network packet relative to existing switching equipment, into The repeating process of the common Ethernet message of row eliminates data packet processing, the packet forwarding process of switching equipment, reduces Flex E number According to the delay of exchange.

Foregoing invention design based on the embodiment of the present invention, as shown in figure 4, a kind of Flex E provided in an embodiment of the present invention Method for interchanging data, method flow specifically includes the following steps:

Step 401, at least one Flex E that switching equipment receives that sending ending equipment is sent receives data frame；

Step 402, switching equipment obtains the reception timeslot number that each Flex E receives data frame, and according to preset reception Each Flex E is received the data carried on each time slot in data frame and is divided by the corresponding relationship of timeslot number and source channels number In using each corresponding source channels number of reception timeslot number for receiving time slot as the data group of index；Wherein, different source channels number Corresponding different source channels, different source channels are used for transmission the logical channel of data between switching equipment and sending ending equipment；

Step 403, switching equipment, will be by different source channels according to the corresponding relationship of preset source channels number and place channel number It number is mapped to by not chummage channel number respectively as the data in the data group of index respectively as in the data group of index；Its In, chummage channel number does not correspond to not chummage channel, and chummage channel is not used for transmission number between switching equipment and receiving device According to logical channel；

Step 404, switching equipment according to preset place channel number and sending time slots number corresponding relationship, by any Su Tongdao Number as index data group data, at least one the Flex E for being respectively mapped to be sent to receiving device sends data frame In, in the corresponding time slot of corresponding with any place channel number sending time slots number.

In above method process, due to the corresponding pass for having pre-established source channels number in switching equipment with having received timeslot number System, source channels number and the corresponding relationship of place channel number and the corresponding relationship of place channel number and sending time slots number, even if exchange is set It is standby not support Flex E agreement.Switching equipment receive each Flex E receive data frame after, according to source channels number with Receive the corresponding relationship of timeslot number and the corresponding relationship and place channel number and sending time slots of source channels number and place channel number Number corresponding relationship, the data carried on each time slot in data frame are received to Flex E and are divided, and by the data of division It is respectively mapped to Flex E according to above-mentioned corresponding relationship to send in the corresponding time slot of each sending time slots number of data frame, thus real Flex E reception data frame is now converted at least one Flex E and sends data frame, relative to existing switching equipment by Flex E Data frame analyzing is received into common ether network packet, the repeating process of common Ethernet message is carried out, eliminates the number of switching equipment It is handled according to packet, packet forwarding process, reduces the delay of Flex E data exchange.

For above method process, a simply example explanation is lifted, if a Flex E, which receives data frame, is equivalent to one Train (train 1), source channels are equivalent to the compartment of a train, and source channels number are equivalent to coach number, are equipped in each compartment The luggage carriers of difference number, are placed with different chests on each luggage carrier, luggage carrier is equivalent to reception time slot, and chest is equivalent to Data in time slot, the number of luggage carrier are equivalent to reception timeslot number.One Flex E is received data frame conversion by switching equipment Data frame is sent at a Flex E, is equivalent to and all exchanges to the chest in a train in another train.If another The compartment of one train (train 2) is equivalent to Su Tongdao, and it includes luggage carrier in each compartment that place channel number, which is equivalent to coach number, Different chests can be placed on each luggage carrier, luggage carrier is equivalent to sending time slots, and chest is equivalent to the number in sending time slots According to the number of luggage carrier is equivalent to reception timeslot number, and the exchange method of the embodiment of the present invention is to provide one being capable of quickly and orderly Method complete two amount trains chest exchange.If orderly quickly carrying chest, the coach number and fire of train 1 need to be constructed Corresponding relationship between the coach number of vehicle 2, for example, train 1 the corresponding train 2 in compartment 11 compartment 33, the compartment 22 of train 1 is right The compartment 44 of train 2 is answered, in this way, the chest on the luggage carrier in compartment 11 only need to be all transported to the luggage carrier on compartment 33 On, the chest on the luggage carrier in compartment 22 is transported on the luggage carrier in compartment 44 can be completed exchange.And the side of the prior art Case is first to find the interior Item Information of each chest, is then grouped to chest, swapping a group by a group.Obviously originally The method that inventive embodiments provide is not necessarily to be grouped exchange according to the Item Information in chest, improves data exchange rate. Optionally, a source channels number can correspond to multiple reception timeslot numbers, and a place channel number corresponds to multiple sending time slots number.

In step 402, the corresponding relationship of timeslot number and source channels number is received because being stored in advance in switching equipment, exchange is set As long as standby multiple reception timeslot numbers according to the received Flex E reception data frame of institute, inquire above-mentioned reception timeslot number and source channels Number mapping table, so that it may determine that the received Flex E of institute receives multiple source channels number of data frame, then can general The data that the Flex E is received in each time slot of data frame are divided in the corresponding data group of corresponding source channel number.Each source is logical Taoist monastic name is that the data group of index is equivalent to a data storage areas, for storing the number in the corresponding time slot for receiving timeslot number According to.Correspondingly, the corresponding data group of each place channel number is equivalent to another data storage areas, when for transmission is stored in advance Data in the corresponding time slot of gap number.

Optionally, a source channels number are corresponding at least one place channel number, and a place channel number and at least one source are logical Taoist monastic name is corresponding.

As shown in figure 5, in switching equipment pre-stored source channels number and place channel number cross-over configuration relationship, according to figure Cross-over configuration relationship shown in 5 to each place channel number carries out that source is selected to configure, to determine the corresponding place of each source channels number Channel number.

For example, source channels A1 is crossed to place channel number B1, place channel number B2, source channels A2 is connected to place channel number B3, source channels A3, source channels A4 be crossed to place channel number B4, then channel number B1 in place selects source to be configured that source channels A1； Place channel number B2's selects source to be configured that source channels A1；Place channel number B3's selects source to be configured that source channels A2；Place channel number B4's selects source to be configured that source channels A3 or source channels A4, wherein source channels A3 is primary source channels number, Huo Zheyuan Channel number A4 is Back Up Source channel number, and the main and standby relation of source channels A3 and source channels A4 can also switch.

If sending ending equipment send a Flex E receive data frame Deta bearer receive timeslot number be S10, In the corresponding time slot of S20, S30, S40, S50, and pre-stored source channels number are corresponding with reception timeslot number in switching equipment Relationship are as follows: source channels channel A1 is corresponding with timeslot number S10, S20, S30 is received, source channels channel A2 and reception Timeslot number S40, S50 are corresponding.

The corresponding relationship of pre-stored source channels number and place channel number in switching equipment are as follows: source channels A1 and Su Tongdao Number B2 is corresponding, and source channels A2 is corresponding with place channel number B3.

The corresponding relationship of pre-stored place channel number and sending time slots number in switching equipment are as follows: place channel number B2 is corresponding Sending time slots number are S2, S5, S79, and channel number B3 corresponding sending time slots number in place are S4, S78.

Then above-mentioned steps 402 include: according to the Flex E receive reception timeslot number S10, S20 of data frame, S30, S40, S50 searches source channels number and receives the corresponding relationship of timeslot number, determines the corresponding source channels of timeslot number S10, S20, S30 respectively Number be source channels A1, the corresponding source channels number of timeslot number S40, S50 be source channels A2；Then S10, S20, S30 is corresponding Time slot on the data that carry be divided into data group of the source channels A1 as index, will be held on the corresponding time slot of S40, S50 The data of load are divided into data group of the source channels A2 as index.

Then step 403 includes: to be mapped to place channel number B2 work using source channels A1 as the data in the data group of index For in the data group of index；Using source channels A2 as the data in the data group of index, place channel number B3 is mapped to as rope In the data group drawn.

Then step 404 includes: to be respectively mapped to sending time slots using place channel number B2 as the data in the data group of index In number corresponding time slot of S2, S5, S79；And it using place channel number B3 as the data in the data group of index, is respectively mapped to send out It send in the corresponding time slot of timeslot number S4, S78.Then it according to the data carried in sending time slots S2, S5, S79, S4, S78, protects The frame format for holding Flex E reception data frame is constant, and a Flex E is received data frame and is converted to a Flex E transmission data Frame.

In alternative embodiment, for switching equipment, the Flex E received, which is received in data frame, carries Flex E Mark, Flex E mark can carry in the frame head that Flex E receives data frame, so that switching equipment distinguishes different Flex E receives data frame.

In step 404, data frame is sent in order to distinguish different Flex E, is sent to every Flex of receiving device E sends data frame and equally carries Flex E mark, so that receiving device identifies that different Flex E receives data frame.For example, The Flex E that the 1st Flex E that switching equipment receives receives data frame is identified as client1, and the 1st Flex E is received The Flex E mark that the 1st Flex E that data frame is converted into through step 401 to step 404 sends data frame is also client1. The Flex E that the 2nd Flex E that switching equipment receives receives data frame is identified as client2, and the 2nd Flex E is received The Flex E mark that the 2nd Flex E that data frame is converted into through step 401 to step 404 sends data frame is also client2. Receiving device can receive the Flex E carried in data frame according to each Flex E and identify, to distinguish different Flex E Data flow.

The process of above-mentioned steps 404 is exactly substantially switching equipment by each received Flex E reception data frame according to The secondary process for being exchanged for corresponding Flex E and receiving data frame.

Optionally, in step 404, switching equipment is according to n batch using place channel number B2 as in the data group of index Data are respectively mapped in the corresponding time slot of sending time slots S2, S5, S79, and make place channel number B3 according to n batch For the data in the data group of index, it is respectively mapped in the corresponding time slot of sending time slots S4, S78.Wherein, n is greater than 1 The total bytes of positive integer, the data that this n batch maps respectively may be the same or different.

Optionally, the data total bytes of preceding n-1 batch mapping are identical, and the data total bytes of n-th of batch mapping are small In or equal to (n-1)th batch mapping data total bytes.In this case, the data of each batch mapping are equivalent to one most The performance of small exchange particle, the total bytes Flex E exchange system according to an embodiment of the present invention of each minimum exchange particle is wanted Ask decision.Because the total bytes of each minimum exchange particle are identical, it is equivalent to the average delay that switching equipment carries out data exchange For the mapping duration of each minimum exchange particle, middle switching equipment converts an ethernet data frame compared with the existing technology It is carried out for shake brought by data exchange for multiple payloads data packet of different sizes, this n minimum exchanges the flat of particle Equal time delay, less than the maximum delay of each data packet, therefore switching equipment sends any one Flex E to receiving device and sends The shake of data frame is fairly small.

For example, switching equipment is mapped using place channel number B2 as the data in the data group of index according to 3 batches respectively It is received in data frame, in the corresponding time slot of sending time slots S2, S5, S79 corresponding with place channel number B2 to a Flex E, tool Body includes:

Step 1), the mapping of the 1st batch, switching equipment take out one for place channel number B2 as the data in the data group of index Part mapping is sent in the corresponding time slot of data frame S2, S5, S79 in Flex E；

Step 2), the mapping of the 2nd batch, switching equipment take place channel number B2 as the remaining data in the data group of index A part is mapped in Flex E and sends in the corresponding time slot of data frame S2, S5, S79 out；

Step 3), the mapping of the 3rd batch, switching equipment are complete as the remaining data in the data group of index using place channel number B2 Portion is mapped in Flex E and sends in the corresponding time slot of data frame S2, S5, S79.

For above-mentioned example, optionally, switching equipment is every time in the data from place channel number B2 as the data group of index The data for taking out fixed word joint number are mapped in Flex E respectively and send the corresponding time slot of data frame sending time slots S2, S5, S79 In.

For the data mapping process of the clearer each batch of explanation, if place channel number B2 is as the data group indexed In data have a 15G bandwidth, channel number B2 corresponding sending time slots number in place are S2, S5, S79, and each timeslot number is corresponding The minimum 5G of payload bandwidth of time slot, per a batch of data, mapping needs 4 slot (time slot) that could map completion.It is then above-mentioned The mapping process of 3 batches is as shown in Figure 6:

Above-mentioned steps 1) in, switching equipment first takes out fixed word for place channel number B2 as the data in the data group of index A part of data A0, A1, A2, A3 of joint number carry out the data mapping of the 1st batch, i.e., reflect A0, A1, A2, A3 of taking-up respectively It penetrates in the corresponding time slot of S2 of S2, S5, S79 and the 2nd slot for belonging to the 1st slot；

Above-mentioned steps 2) in, switching equipment takes out using place channel number B2 as the remaining data in the data group of index solid again Determine a part of data B0, B1, B2, B3 of byte number, carries out the data mapping of the 2nd batch, i.e., by B0, B1, B2, B3 of taking-up points It is not mapped in the corresponding time slot of S2, S5 of S5, S79 for belonging to the 2nd slot and the 3rd slot；

Above-mentioned steps 3) in, switching equipment using place channel number B2 as index data group in remaining data C0, C1, C2, C3 (wherein, the total amount of byte of C0, C1, C2, C3 are less than or equal to fixed word joint number) carry out the data mapping of the 3rd batch, C0, C1, C2, the C3 taken out belongs to S2, S5, S79 couple of S79 and the 4th slot of the 3rd slot by being mapped in respectively In the time slot answered.

Above-mentioned example illustrates place channel number B2 and is mapped in a manner of dividing equally as the data in the data group of index In place channel number B2 corresponding 3 time slots, that is, B0, B1 of the total bytes of data A0, A1, A2, A3 for taking out and taking-up, The total bytes of B2, B3 are equal, and since the data finally taken out may be smaller, the total bytes of B0, B1, B2, B3 of taking-up are big In or equal to remaining C0, C1, C2, C3 total bytes.

If correspondingly, switching equipment using place channel number B3 as the data in the data group of index according to 2 batches, point It is not mapped to Flex E data to send in the corresponding time slot of frame sending time slots S4, S78, then step 204 includes:

Step 5), the mapping of the 1st batch, switching equipment take out one for place channel number B3 as the data in the data group of index Part is mapped in Flex E and sends in data frame in the corresponding time slot of sending time slots S4, S78；

Step 6), the mapping of the 2nd batch, switching equipment are complete as the remaining data in the data group of index using place channel number B3 Portion is mapped in Flex E and sends in data frame in the corresponding time slot of sending time slots S4, S78.

Optionally, switching equipment every time from place channel number B3 as index data group data in take out fixed word joint number Data, be mapped in the corresponding time slot of sending time slots S4, S78 respectively.In this case, the data of each batch mapping are suitable In a minimum exchange particle, the total bytes Flex E exchange system according to an embodiment of the present invention of each minimum exchange particle Performance requirement determine.

For the data mapping process of the clearer each batch of explanation, it is assumed that data group of the place channel number B3 as index In data have a 10G bandwidth, the minimum 5G of payload bandwidth of each time slot, the corresponding sending time slots number of place channel number B3 be S4, S78, per a batch of data, mapping needs 4 slot (time slot) that could map completion.Then above-mentioned mapping is carried out according to 2 batches Process it is as shown in Figure 7:

Above-mentioned steps 5) in, place channel number B3 is taken out fixed byte by switching equipment Several a part of data U0, U1, U2, U3 carries out the data mapping of the 1st batch, i.e., by U0, U1, U2, U3 of taking-up, reflects respectively It penetrates in the corresponding time slot of S4, S78 of S4, S78 and the 2nd slot for belonging to the 1st slot；

Above-mentioned steps 6) in, switching equipment using place channel number B3 as index data group in remaining data V0, V1, V2, V3 (total amount of byte of V0, V1, V2, V3 are less than or equal to fixed word joint number), V0, V1, V2, V3 of taking-up are mapped respectively In the corresponding time slot of S4, S78 of S4, S78 and the 4th slot for belonging to the 3rd slot.

Wherein, above-mentioned steps 1) to step 4) and above-mentioned steps 5) sequencing not absolute to step 6), or even on Step 1) is stated to step 4) and above-mentioned steps 5) it can carry out simultaneously to step 6).

According to above-mentioned steps 402 to step 404, each Flex E can be received each time slot of data frame by switching equipment The data of middle carrying are divided and are mapped, and then switching equipment is received data frame from the received Flex E of sending ending equipment and is turned It changes the Flex E sent to receiving device into and sends data frame.

In optional embodiment, before step 402, further includes: obtain each Flex E and receive the corresponding source of data frame Clock signal frequency；Source clock signal frequency is transformed on the clock domain of switching equipment.

Optionally, source clock signal frequency is transformed on the clock domain of switching equipment, comprising: receive each Flex E The data carried in each time slot in data frame are according to the write-in of source clock signal frequency in the caching in change over clock domain；And it presses According to the clock signal frequency of switching equipment, the data being written in caching are read.

As shown in figure 8, receiving data frame for received each Flex E, switching equipment reads the number being written in caching According to when, it is (slotting by Idle delete (deleting idle frame) and Idle insert according to source clock and switching equipment system clock Enter idle frame) mode waterline adjusting is carried out to caching, it is ensured that received each Flex E receive the clock frequency of data frame with The system clock of switching equipment is synchronous.

Received Flex E is received data frame and carries out clock synchronization process by switching equipment, it is ensured that every Flex E receives number Data exchange is carried out under same clock signal frequency benchmark according to frame, prevents the Flex E from different sending ending equipments from receiving Data frame because clock domain difference caused by data transmit shake.

Flex E method for interchanging data provided in an embodiment of the present invention can also be located other than being capable of handling FlexE business Reason OTN business, the mixed service with FlexE service constitution, switching equipment can from physical structure respectively for ordinary data traffic Isolate the FlexE business and ordinary data traffic for belonging to Ethernet system architecture, and guarantee FlexE business relative to The absolute priority of ordinary data traffic, as shown in Figure 9:

Switching equipment receives respectively from different reception physical interfaces (FIC in Fig. 9): Flex E business and general data The mixed service data (Flex E/ data are simply illustrated as in Fig. 9) of business, the mixed service of Flex E business and OTN business Data (are simply illustrated as Flex E/OTN) in Fig. 9.Then according to Flex E method for interchanging data provided in an embodiment of the present invention into The process of the data exchange of row mixed service specifically:

Firstly, switching equipment carries out business separation to mixed service, FlexE business and common number can be especially isolated According to business.

Secondly, switching equipment by the data frame of the different business isolated (such as the Flex E in Fig. 7 receive data frame, Common ether receives data frame and OTN receives data frame) processing is swapped, then using the different friendships for receiving data frame It changes mode and data exchange is carried out with minimum exchange particle.

For example, switching equipment receives data frame according to the data exchange side Flex E provided in an embodiment of the present invention to Flex E Method carries out data exchange, and Flex E reception data frame is swapped in a manner of channelizing；Data frame is received to common ether Data processing is carried out, data exchange is carried out as exchange particle using data packet；Data frame is received to OTN to handle, Then data exchange is carried out as exchange particle using ODUk.

It is exported finally, different types of exchange particle is reverted to mixed service data again by switching equipment.

For example, Flex E is received the data in data frame and is mapped in Flex E transmission data frame by mapping method Data common ether is received in data frame after the minimum exchange particle difference demapping as ordinary data traffic Data are mapped to the data in common ether transmission data frame, and Flex E is then sent data frame and common ether sends data The blended data that frame is constituted, is sent to corresponding transmission object with the mixed service data of ordinary data traffic as Flex E business Manage interface；Correspondingly, Flex E is received the data that the data in data frame are mapped in Flex E transmission data frame, by conduct After the minimum exchange particle difference demapping of OTN business, OTN is received into the data in data frame and is mapped to OTN transmission data frame In data, Flex E is then sent into data frame and OTN and sends the blended data that data frame is constituted, as Flex E business with The mixed service data of OTN business are sent to corresponding transmission physical interface (FIC).

For switching equipment, after receiving any Flex E reception data frame, data frame is received according to Flex E Source channels number, source channels number and receive timeslot number corresponding relationship and source channels number and place channel number corresponding relationship, with And the corresponding relationship of place channel number and sending time slots number, the data carried on each time slot in data frame are received to any Flex E When being divided, and the data of division being respectively mapped to each transmission of Flex E transmission data frame according to above-mentioned corresponding relationship In the corresponding time slot of gap number, Flex E is sent into data frame to realize and be converted to Flex E reception data frame, relative to existing There is switching equipment that Flex E is received data frame analyzing into common ether network packet, carry out the repeating process of common Ethernet message, Data packet processing, packet forwarding process are eliminated, the delay of Flex E data exchange is reduced.

Optionally some other features in the embodiment of the present invention are identical as in above method embodiment, reference can be made to above-mentioned Discussion in embodiment of the method, details are not described herein.

Based on same idea, Figure 10 illustrates a kind of structural representation of switching equipment provided in an embodiment of the present invention Figure, the switching equipment include processor 801 and transceiver 805 for executing above method embodiment, switching equipment 800.

It optionally, further include memory 802 and communication interface 803, wherein processor 801, memory 802, communication interface 803 and transceiver 805 be connected with each other by bus 804；Memory 802 can integrate in processor 801, can also be independently of Processor 801.

Bus 804 can be Peripheral Component Interconnect standard (peripheral component interconnect, abbreviation PCI) bus or expanding the industrial standard structure (extended industry standard architecture, abbreviation EISA) Bus etc..Bus can be divided into address bus, data/address bus, control bus etc..For convenient for indicating, only with a thick line in Figure 10 It indicates, it is not intended that an only bus or a type of bus.

Memory 802 may include volatile memory (volatile memory), such as random access memory (random-access memory, abbreviation RAM)；Memory 802 also may include nonvolatile memory (non-volatile ), such as flash memory (flash memory), hard disk (hard disk drive, abbreviation HDD) or solid state hard disk memory (solid-state drive, abbreviation SSD)；Memory 802 can also include the combination of the memory of mentioned kind.

Communication interface 803 can be wire communication access port, wireless communication interface or combinations thereof, wherein wire communication connects Mouth for example can be Ethernet interface.Ethernet interface can be optical interface, electrical interface or combinations thereof.Wireless communication interface can be with For WLAN interface.

Processor 801 can be central processing unit (central processing unit, abbreviation CPU), network processing unit The combination of (network processor, abbreviation NP) or CPU and NP.

Processor 801 can further include hardware chip.Above-mentioned hardware chip can be specific integrated circuit (application-specific integrated circuit, abbreviation ASIC), programmable logic device (programmable logic device, abbreviation PLD) or combinations thereof.Above-mentioned PLD can be Complex Programmable Logic Devices (complex programmable logic device, abbreviation CPLD), field programmable gate array (field- Programmable gate array, abbreviation FPGA), Universal Array Logic (generic array logic, abbreviation GAL) or Any combination thereof.

For storing instruction, processor 801 is used for the instruction stored according to memory 802 is executed to memory 802, and controls Transceiver 805 carries out signal reception and signal is sent, when processor 801 executes the instruction that memory 802 stores:

Transceiver 805, at least one Flex E for receiving sending ending equipment transmission receive data frame；

Processor 801 receives the reception timeslot number of data frame for obtaining each Flex E, and when according to preset reception The corresponding relationship of gap number and source channels number, by each Flex E receive the data carried on each time slot in data frame be divided into In data group of the corresponding source channels number of the timeslot number of each time slot as index；Wherein, different source channels number correspondences are not homologous Channel, different source channels are used for transmission the logical channel of data between switching equipment and sending ending equipment；And

According to the corresponding relationship of preset source channels number and place channel number, using by different source channels number as index Data in data group are mapped to by not chummage channel number respectively as the data group of index；Wherein, chummage channel number is not corresponding Not chummage channel, chummage channel is not used for transmission the logical channel of data between switching equipment and receiving device；And

According to the corresponding relationship of preset place channel number and sending time slots number, using any place channel number as the data of index The data of group, at least one the Flex E for being respectively mapped to be sent to receiving device send in data frame and any place In the corresponding time slot of the corresponding sending time slots number of channel number.

Optionally, processor 801 are also used to receiving each Flex E into the data carried on each time slot in data frame Before being divided into using the corresponding source channels number of the timeslot number of each time slot as the data group of index, obtains each Flex E and connect Receive the corresponding source clock signal frequency of data frame；And source clock signal frequency is transformed on the clock domain of switching equipment.

Optionally, processor 801, for executing: each Flex E is received to the number carried in each time slot in data frame It is used in the writing station in change over clock domain according to according to the write-in of source clock signal frequency；And the clock signal according to switching equipment Frequency, the data being written in read and write-in apparatus.

Optionally, switching equipment is using any place channel number as the data in the data group of index according to n batch, difference Be mapped to one of Flex E receive in data frame, the corresponding time slot of sending time slots number corresponding with any place channel number In；

Wherein, the data total bytes of preceding n-1 batch mapping are identical, and the data total bytes of n-th of batch mapping are less than Or the data total bytes of equal to (n-1)th batch mapping.

Based on same idea, Figure 11 illustrates a kind of structural representation of switching equipment provided in an embodiment of the present invention Figure, the switching equipment is for executing above method embodiment.

A kind of switching equipment as shown in figure 11, comprising:

Transmit-Receive Unit 901, at least one Flex E for receiving sending ending equipment transmission receive data frame；

Processing unit 902 receives the reception timeslot number of data frame for obtaining each Flex E, and according to preset reception The received each Flex E of Transmit-Receive Unit 901 is received each time slot in data frame by the corresponding relationship of timeslot number and source channels number The data of upper carrying are divided into using the corresponding source channels number of the timeslot number of each time slot as the data group of index；Wherein, no Homologous channel number corresponds to different source channels, and different source channels are used for transmission patrolling for data between switching equipment and sending ending equipment Collect channel；And

According to the corresponding relationship of preset source channels number and place channel number, using by different source channels number as index Data in data group are mapped to by not chummage channel number respectively as in the data group of index；Wherein, not chummage channel number pair Not chummage channel is answered, chummage channel is not used for transmission the logical channel of data between switching equipment and receiving device；And

Optionally, processing unit 902 are also used to receiving each Flex E into the number carried on each time slot in data frame According to before being divided into using the corresponding source channels number of the timeslot number of each time slot as the data group of index, each Flex E is obtained Receive the corresponding source clock signal frequency of data frame；And source clock signal frequency is transformed on the clock domain of switching equipment.

In above-mentioned alternative embodiment, received Flex E is received into data frame and carries out clock synchronization process, it is ensured that is each Flex E receives data frame and carries out data exchange under same clock signal frequency benchmark, prevents from different sending ending equipments Flex E receive data frame because clock domain difference caused by data transmit shake.

Optionally, processing unit 902 are pressed for each Flex E to be received the data carried in each time slot in data frame According to the write-in of source clock signal frequency in the writing station in change over clock domain；And the clock signal frequency according to switching equipment Rate, the data being written in read and write-in apparatus.

Optionally, switching equipment is using any place channel number as the data in the data group of index according to n batch, difference Be mapped to one of Flex E receive in data frame, the corresponding time slot of sending time slots number corresponding with any place channel number In；Wherein, the data total bytes of preceding n-1 batch mapping are identical, and the data total bytes of n-th of batch mapping are less than or equal to The data total bytes of (n-1)th batch mapping.

It should be understood by those skilled in the art that, the embodiment of the present invention can provide as the production of method, system or computer program Product.Therefore, in terms of the embodiment of the present invention can be used complete hardware embodiment, complete software embodiment or combine software and hardware Embodiment form.Moreover, it wherein includes computer available programs generation that the embodiment of the present invention, which can be used in one or more, The meter implemented in the computer-usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) of code The form of calculation machine program product.

The embodiment of the present invention be referring to according to the method for the embodiment of the present invention, equipment (system) and computer program product Flowchart and/or the block diagram describe.It should be understood that can be realized by computer program instructions in flowchart and/or the block diagram The combination of process and/or box in each flow and/or block and flowchart and/or the block diagram.It can provide these calculating Processing of the machine program instruction to general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices Device is to generate a machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute For realizing the function of being specified in one or more flows of the flowchart and/or one or more blocks of the block diagram Device.

These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates, Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or The function of being specified in multiple boxes.

These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one The step of function of being specified in a box or multiple boxes.

Obviously, those skilled in the art can carry out various modification and variations without departing from this Shen to the embodiment of the present invention Spirit and scope please.In this way, if these modifications and variations of the embodiment of the present invention belong to the claim of this application and its wait Within the scope of technology, then the application is also intended to include these modifications and variations.

Claims

1. a kind of flexible Ethernet Flex E method for interchanging data, which is characterized in that the described method includes:

Switching equipment receives at least one Flex E that sending ending equipment is sent and receives data frame；The Flex E data are to support The data of Flex E agreement；

The switching equipment obtains the reception timeslot number that each Flex E receives data frame, and according to preset receptions timeslot number and The corresponding relationship of source channels number, by each Flex E receive the data carried on each time slot in data frame be divided into it is each when In data group of the corresponding source channels number of the timeslot number of gap as index；Wherein, the corresponding different source channels of different source channels number, no The logical channel of data is used for transmission between the switching equipment and the sending ending equipment with source channels；

The switching equipment will be made respectively according to the corresponding relationship of preset source channels number and place channel number by different source channels number It is mapped to by not chummage channel number for the data in the data group of index respectively as in the data group of index；Wherein, not chummage The corresponding not chummage channel of channel number, chummage channel is not used for transmission patrolling for data between the switching equipment and receiving device Collect channel；

The switching equipment according to preset place channel number and sending time slots number corresponding relationship, using any place channel number as rope The data for the data group drawn, at least one the Flex E for being respectively mapped to be sent to the receiving device are sent in data frame , in the corresponding time slot of corresponding with any place channel number sending time slots number.

2. the method as described in claim 1, which is characterized in that receive each Flex E in data frame in the switching equipment The data carried on each time slot are divided into using the corresponding source channels number of the timeslot number of each time slot as the data group of index Before, further includes:

It obtains each Flex E and receives the corresponding source clock signal frequency of data frame；

3. method according to claim 2, which is characterized in that the source clock signal frequency is transformed into the switching equipment Clock domain on, comprising:

Each Flex E is received to the data carried in each time slot in data frame, use is written according to the source clock signal frequency In the writing station in change over clock domain；

4. the method as described in claim 1, which is characterized in that each Flex E that the switching equipment receives receives number Unique Flex E mark is carried according to frame；

Each Flex E that the switching equipment is sent sends data frame and carries unique Flex E mark.

5. the method as described in claim 1, which is characterized in that

The switching equipment, according to n batch, is respectively mapped to using any place channel number as the data in the data group of index One of Flex E receives in data frame, in the corresponding time slot of sending time slots number corresponding with any place channel number；

Wherein, n is the positive integer greater than 1, and the data total bytes of preceding n-1 batch mapping are identical, the data of n-th of batch mapping Total bytes are less than or equal to the data total bytes of (n-1)th batch mapping.

6. a kind of switching equipment, which is characterized in that the switching equipment includes:

Transmit-Receive Unit, at least one flexible Ethernet Flex E for receiving sending ending equipment transmission receive data frame；

Processing unit receives the reception timeslot number of data frame for obtaining each Flex E, and according to preset reception timeslot number With the corresponding relationship of source channels number, each Flex E is received into the data carried on each time slot in data frame and is divided into each In data group of the corresponding source channels number of the timeslot number of time slot as index；Wherein, the corresponding different source channels of different source channels number, Different source channels are used for transmission the logical channel of data between the switching equipment and the sending ending equipment；And

Processing unit is also used to, will be by different source channels number point according to the corresponding relationship of preset source channels number and place channel number It is not mapped to by not chummage channel number as the data in the data group of index respectively as in the data group of index；Wherein, no The corresponding not chummage channel of chummage channel number, chummage channel is not used for transmission data between the switching equipment and receiving device Logical channel；And

Processing unit is also used to, and according to the corresponding relationship of preset place channel number and sending time slots number, any place channel number is made For the data of the data group of index, at least one the Flex E for being respectively mapped to be sent to the receiving device sends data frame In, in the corresponding time slot of corresponding with any place channel number sending time slots number.

7. switching equipment as claimed in claim 6, which is characterized in that

The processing unit, be also used to by each Flex E receive the data carried on each time slot in data frame be divided into The corresponding source channels number of the timeslot number of each time slot obtain each Flex E and receive data frame as before in the data group of index Corresponding source clock signal frequency；And

8. switching equipment as claimed in claim 7, which is characterized in that

The processing unit, when for each Flex E to be received the data carried in each time slot in data frame according to the source The write-in of clock signal frequency is in the writing station in change over clock domain；And

9. switching equipment as claimed in claim 6, which is characterized in that

Each Flex E that the switching equipment receives receives data frame and carries unique Flex E mark；

10. switching equipment as claimed in claim 6, which is characterized in that the switching equipment is using any place channel number as rope The data in data group drawn according to n batch, be respectively mapped to one of Flex E receive in data frame, with any place In the corresponding time slot of the corresponding sending time slots number of channel number；

11. a kind of switching equipment, which is characterized in that the switching equipment includes: processor, transceiver and memory；

For storing instruction, the processor is used for the instruction stored according to the memory is executed to the memory, and controls The transceiver carries out signal reception and signal is sent, when the processor executes the instruction of the memory storage,

The transceiver is used to execute: receiving at least one flexible Ethernet Flex E that sending ending equipment is sent and receives data Frame；

The processor, for executing: obtaining the reception timeslot number that each Flex E receives data frame, and according to preset reception Each Flex E is received the data carried on each time slot in data frame and is divided by the corresponding relationship of timeslot number and source channels number In using the corresponding source channels number of the timeslot number of each time slot as the data group of index；Wherein, different source channels number are corresponding different Source channels, different source channels are used for transmission the logical channel of data between the switching equipment and the sending ending equipment；With And

According to the corresponding relationship of preset source channels number and place channel number, using by different source channels number as the data of index Data in group are mapped to by not chummage channel number respectively as in the data group of index；Wherein, chummage channel number is not corresponding not Chummage channel, chummage channel is not used for transmission the logical channel of data between the switching equipment and receiving device；And

According to the corresponding relationship of preset place channel number and sending time slots number, using any place channel number as the data group of index Data, at least one the Flex E for being respectively mapped to be sent to the receiving device send in data frame and any place In the corresponding time slot of the corresponding sending time slots number of channel number.

12. switching equipment as claimed in claim 11, which is characterized in that

The processor is also used to execute: dividing each Flex E to be received to the data carried on each time slot in data frame Before in using the corresponding source channels number of the timeslot number of each time slot as the data group of index, obtains each Flex E and receive number According to the corresponding source clock signal frequency of frame；And

13. switching equipment as claimed in claim 12, which is characterized in that

The processor, for executing: each Flex E is received the data carried in each time slot in data frame according to described Clock signal frequency write-in in source is in the writing station in change over clock domain；And

14. switching equipment as claimed in claim 11, which is characterized in that

15. switching equipment as claimed in claim 11, which is characterized in that the switching equipment is using any place channel number as rope The data in data group drawn according to n batch, be respectively mapped to one of Flex E receive in data frame, with any place In the corresponding time slot of the corresponding sending time slots number of channel number；