CN101888336A - Method of using access device to realize time division multiplexing service relaying and access device - Google Patents
Method of using access device to realize time division multiplexing service relaying and access device Download PDFInfo
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/403—Bus networks with centralised control, e.g. polling
- H04L12/4035—Bus networks with centralised control, e.g. polling in which slots of a TDMA packet structure are assigned based on a contention resolution carried out at a master unit
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Abstract
The invention provides a method of using an access device to realize time division multiplexing (TDM) service relaying and the access device, relates to the network communication technology and aims at solving the technical problem of the prior art that a TDM simulation chip is required to add in an access device supporting TDM service. The method comprises the following steps: step 11. the consumer panel of the access device receives a first message encapsulated by a first encapsulation protocol and sends the first message to the protocol processing card of the access device, wherein the first message contains TDM payload; and step 12. the protocol processing card converts the first message to a second message encapsulated by a second encapsulation protocol and sends the second message to the upper link plate of the access device to ensure that the upper link plate sends the second message to a packet switched network, wherein the second message contains the TDM payload and can be transmitted in the packet switched network. The access device of the invention can support the access of TDM service and not required the additional TDM simulation chip.
Description
Technical field
The present invention relates to network communications technology, particularly a kind of access device is realized the method and the access device of the professional relaying of time division multiplexing tdm.
Background technology
In recent years, along with the surge and the professional develop rapidly of IP (Internet Protocol, Internet protocol) of network traffic data in the global range, construction has proposed many new problems to current network.On the one hand, basic telecom services such as traditional telephone service and leased line business remain the main source of the professional income of present telecom operators; On the other hand, to force telecommunications network IP to change into be the trend that can't reverse to the high speed development of data service.The fusion of data, voice and video traffic has become the inexorable trend of NGN (Next Generation Network, next generation network) development.How to allow data network carrying TDM (Time Division Multiplex, time division multiplexing) professional and how to take into account existing business and future network development, become the focus that each telecom operators pays close attention to.Broadband access equipment just must realize that in order to satisfy the objective requirement of network development and fusion multiple business comprises the comprehensive access of TDM business.
Clock is most important to guaranteeing TDM system operate as normal and conformance with standard.Any access device all must be handled the clock of TDM trunk line.Different with circuit-switched network, PSN does not have timing topology.Access device manufacturer adopts the TDM emulation chip that the TDM Business Stream is encapsulated and recovers at present.For the broadband device of having disposed, if access device is supported the TDM business, need access device to increase the TDM emulation chip, cost is than higher like this.
Summary of the invention
The technical problem to be solved in the present invention provides method and the access device that a kind of access device is realized the professional relaying of TDM, can support the access of TDM business on access device does not increase the basis of TDM emulation chip.
For solving the problems of the technologies described above, embodiments of the invention provide technical scheme as follows:
A kind of access device is realized the method for the professional relaying of time division multiplexing tdm, comprising:
Described protocol processes card comprises the step that described first message is converted to second message that encapsulates with second tunneling:
Step 121, described protocol processes card parses the packaging information of described first message;
Step 122, described protocol processes card be according to the corresponding relation between the packaging information of the packaging information of the first default tunneling and second tunneling, obtains the packaging information of second tunneling of the packaging information correspondence of described first message;
Step 123, described protocol processes card are encapsulated as second message according to the packaging information of described second tunneling with described first message.
Described step 122 comprises:
Described protocol processes card obtains the sign of the packaging information corresponding virtual circuit tab of described first tunneling that parses according to the corresponding relation between the sign of the packaging information of the first default tunneling and virtual circuit label;
Described protocol processes card is according to the corresponding relation between the packaging information of the sign of default virtual circuit label and second tunneling, obtains the packaging information of second tunneling of the sign correspondence of described virtual circuit label.
Described step 11 is specially:
Described user's plate receives first message;
Described user's plate is discerned the place in circuit of described first message;
Described user's buttress is according to the corresponding relation of the sign of default TDM place in circuit and place in circuit, obtains the sign of place in circuit of the place in circuit correspondence of described first message;
Described user's plate is added on the sign of described place in circuit in the heading of described first message, generates first message that is added with the place in circuit sign;
First message that described user's plate will be added with the place in circuit sign sends to described protocol processes card;
Described step 123 is specially: described protocol processes card is encapsulated as second message according to the packaging information of described second tunneling with described first message that is added with the place in circuit sign.
Described second tunneling is multi protocol label exchange MPLS; The packaging information of described second tunneling is the information of MPLS tunnel label and the information of pseudo line tag.
The step that user's plate of described access device receives first message is specially:
User's plate of described access device receives first message, and to identify described first message based on the packaging information of the sign of the place in circuit of described first message or described data message be the message that comprises the TDM payload.
On the other hand, provide a kind of access device to realize the method for the professional relaying of time division multiplexing tdm, it is characterized in that, comprising:
Step 21, the upper connective plate of access device receives second message, and sends to the protocol processes card of described access device, and described second message comprises the TDM payload;
The protocol processes card of described access device comprises the step that described second message is converted to first message:
Step 221, described protocol processes card extracts packaging information from described second message;
Step 222, described protocol processes card be according to the corresponding relation between the packaging information of the packaging information of the second default tunneling and first tunneling, obtains the packaging information of first tunneling of the packaging information correspondence of described second message;
Step 223, described protocol processes card are packaged into first message according to the packaging information of described first tunneling with described second message.
Described step 222 comprises:
Step 2221, described protocol processes card be according to the corresponding relation of the sign of the packaging information of the second default tunneling and virtual circuit label, obtains the sign of packaging information corresponding virtual circuit tab of second tunneling of extraction;
Step 2222, described protocol processes card be according to the corresponding relation between the packaging information of the sign of default virtual circuit label and first tunneling, searches the packaging information of first tunneling of the sign correspondence of described virtual circuit label.
On the other hand, provide a kind of access device, comprising: user's plate of access device, the protocol processes card of access device, upper connective plate;
Described user's plate is used to receive first message with the encapsulation of first tunneling, and sends to the protocol processes card of described access device, and described first message comprises the TDM payload;
Described protocol processes card, be used for described first message is converted to second message that encapsulates with second tunneling, and send to the upper connective plate of described access device, make described upper connective plate send described second message in the described packet switching network, described second message comprises described TDM payload, and can transmit in the described packet switching network.
Described protocol processes card comprises:
Resolution unit is used to parse the packaging information of described first message;
The packaging information acquiring unit is used for according to the corresponding relation between the packaging information of the packaging information of the first default tunneling and second tunneling, obtains the packaging information of second tunneling of the packaging information correspondence of described first message;
Encapsulation unit is used for the packaging information according to described second tunneling, and described first message is encapsulated as second message.
Described user's plate comprises:
Receiving element is used to receive described first message;
Recognition unit is used to discern the place in circuit of described first message;
Place in circuit sign acquiring unit is used for the corresponding relation according to the sign of default TDM place in circuit and place in circuit, obtains the sign of the place in circuit of the described first circuit correspondence;
The message generation unit is used for the sign of described place in circuit is added on the heading of described first message, generates first message that is added with the place in circuit sign;
Transmitting element, first message that is used for being added with the place in circuit sign sends to described protocol processes card;
Described encapsulation unit is specially: according to the packaging information of described second tunneling and the sign of described place in circuit, described first message is encapsulated as second message, is added with the sign of described place in circuit in the heading of described second message.
On the other hand, provide a kind of access device, comprising: user's plate of access device, the protocol processes card of access device, upper connective plate;
Described upper connective plate is used to receive second message with the encapsulation of second tunneling, and sends to the protocol processes card of described access device, and described second message comprises the TDM payload;
Described protocol processes card, be used for described second message is converted to first message that encapsulates with first tunneling, and send to user's plate of described access device, make described user's plate that described first message is sent to the TDM equipment that is connected with described access device, described first message comprises described TDM payload.
Described protocol processes card comprises:
Extraction unit is used for extracting packaging information from described second message;
The packaging information acquiring unit is used for according to the corresponding relation between the packaging information of the packaging information of the second default tunneling and first tunneling, obtains the packaging information of first tunneling of the packaging information correspondence of described second message;
Encapsulation unit is used for the packaging information according to described first tunneling, and described second message is packaged into first message.
Embodiments of the invention have following beneficial effect:
In the such scheme, access device only carries out conversion process to the skin encapsulation of TDM message, do not need to handle TDM message itself, processing for the TDM message content is handled by the TDM equipment oneself that the downstream connects, under the situation that does not increase the TDM emulation chip, on the basis of the access device that existing network is disposed, support the TDM service access.
Description of drawings
Fig. 1 is the schematic flow sheet of an embodiment of the access device of the present invention method that realizes the professional relaying of time division multiplexing tdm, and this embodiment is up process;
Fig. 2 is the schematic flow sheet of another embodiment of the access device of the present invention method that realizes the professional relaying of time division multiplexing tdm, and this embodiment is up process;
Fig. 3 is the schematic flow sheet of an embodiment of the access device of the present invention method that realizes the professional relaying of time division multiplexing tdm, and this embodiment is descending process;
Fig. 4 is the schematic flow sheet of another embodiment of the access device of the present invention method that realizes the professional relaying of time division multiplexing tdm, and this embodiment is descending process;
Fig. 5 is the corresponding relation between the field in the data message of several dissimilar tunneling modes;
Fig. 6 is the structural representation of access device of the present invention, is applied to up process;
Fig. 7 is the structural representation of the application scenarios of access device of the present invention;
Fig. 8 is the structural representation of the network at access device of the present invention place;
Fig. 9 is packaged into the data structure schematic diagram of MPLS form for the TDM message;
Figure 10 is the data structure schematic diagram of the MPLS form when being the sign of place in circuit in two layers of when exchange with VLAN;
Figure 11 be two layers when exchange place in circuit be designated customization type the time the data structure schematic diagram of MPLS form.
Embodiment
For technical problem, technical scheme and advantage that embodiments of the invention will be solved is clearer, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
As shown in Figure 1, be the method for the professional relaying of a kind of access device realization time division multiplexing tdm of the present invention, this embodiment is up process, and described method comprises:
In the such scheme, access device only carries out conversion process to the skin encapsulation of TDM message, do not need to handle TDM message itself, processing for the TDM message content is handled by the TDM equipment oneself that the downstream connects, under the situation that does not increase the TDM emulation chip, on the basis of the access device that existing network is disposed, support the TDM service access.
As shown in Figure 2, be the method for the professional relaying of a kind of access device realization time division multiplexing tdm of the present invention, this embodiment is up process, and described method comprises:
Step 21, user's plate of access device receives first message with the encapsulation of first tunneling, and described first message comprises the TDM payload.
Described step 24 comprises:
Step 241, described protocol processes card are obtained the sign of the packaging information corresponding virtual circuit tab of described first tunneling that parses according to the corresponding relation between the sign of the packaging information of the first default tunneling and virtual circuit label;
Step 242, described protocol processes card be according to the corresponding relation between the packaging information of the sign of default virtual circuit label and second tunneling, obtains the packaging information of second tunneling of the sign correspondence of described virtual circuit label.
Described step 21 is specially:
Step 211, user's plate of described access device receives first message, and to identify described first message based on the packaging information of the sign of the place in circuit of described first message or described data message be the message that comprises the TDM payload.
Step 212, described user's plate is discerned the place in circuit of described first message;
Step 213, described user's buttress be according to the corresponding relation of the sign of default TDM place in circuit and place in circuit, obtains the sign of place in circuit of the place in circuit correspondence of described first message;
Accordingly, described step 22 is specially: described user's plate is added on the sign of described place in circuit in the heading of described first message, generates first message that is added with the place in circuit sign; First message that is added with the place in circuit sign is sent to the protocol processes card;
Accordingly, described step 25 is specially: described protocol processes card is encapsulated as second message according to the packaging information of described second tunneling with described first message that is added with the place in circuit sign.
Described second tunneling is multi protocol label exchange MPLS; The packaging information of described second tunneling is the information of MPLS tunnel label and the information of pseudo line tag.
As shown in Figure 3, be the method for the professional relaying of a kind of access device realization TDM of the present invention, this embodiment is descending process, and described method comprises:
As shown in Figure 4, be the method for the professional relaying of a kind of access device realization TDM of the present invention, this embodiment is descending process, and described method comprises:
Described step 44 comprises:
Step 441, described protocol processes card be according to the corresponding relation of the sign of the packaging information of the second default tunneling and virtual circuit label, obtains the sign of packaging information corresponding virtual circuit tab of second tunneling of extraction;
Step 442, described protocol processes card be according to the corresponding relation between the packaging information of the sign of default virtual circuit label and first tunneling, searches the packaging information of first tunneling of the sign correspondence of described virtual circuit label.
Described second tunneling is multi protocol label exchange MPLS; The packaging information of described second tunneling is the information of MPLS tunnel label and the information of pseudo line tag.
Among the above-mentioned various embodiment, the upstream equipment of access device (equipment of packet switching network side just) does not need to change on handling process, and the upstream device of access device (the TDM equipment that just is connected with access device) is according to encapsulation format, extracts tdm data and handles and get final product.The packaging information of tunneling is the value of the field in the message of encapsulated type and tunneling.
First tunneling can be TDM over Ethernet, TDM over MPLS or TDM overIP.Second tunneling can be TDM over Ethernet, TDM over MPLS or TDM over IP.First tunneling can also can be difference for identical with second tunneling.The sign of place in circuit can be VLAN (Virtual Local Area Network, VLAN) information.
The protocol type decision that the type of second tunneling is supported by described upstream equipment.The protocol type decision that the type of first tunneling is supported by described upstream device.Need pre-set the corresponding relation between the packaging information of the packaging information of first tunneling and second tunneling.As shown in Figure 5, be the corresponding relation between the field of various packaged types.
As shown in Figure 6, be a kind of access device of the present invention, comprise: user's plate 51 of access device, the protocol processes card 52 of access device and upper connective plate 53,
When being applied to up process, described user's plate 51 is used to receive first message with the encapsulation of first tunneling, and sends to the protocol processes card of described access device, and described first message comprises the TDM payload;
Described protocol processes card 52, be used for described first message is converted to second message that encapsulates with second tunneling, and send to the upper connective plate 53 of described access device, make described upper connective plate send described second message in the described packet switching network, described second message comprises described TDM payload, and can transmit in the described packet switching network.
Described protocol processes card 52 comprises:
Resolution unit 521 is used to parse the packaging information of described first message;
Packaging information acquiring unit 522 is used for according to the corresponding relation between the packaging information of the packaging information of the first default tunneling and second tunneling, obtains the packaging information of second tunneling of the packaging information correspondence of described first message;
Encapsulation unit 523 is used for the packaging information according to described second tunneling, and described first message is encapsulated as second message.
Packaging information acquiring unit 522 is specially: according to the corresponding relation between the sign of the packaging information of the first default tunneling and virtual circuit label, obtain the sign of the packaging information corresponding virtual circuit tab of described first tunneling that parses; According to the corresponding relation between the packaging information of the sign of default virtual circuit label and second tunneling, obtain the packaging information of second tunneling of the sign correspondence of described virtual circuit label.
Described user's plate 51 comprises:
Receiving element 511 is used to receive described first message;
Recognition unit 512 is used to discern the place in circuit of described first message;
Place in circuit sign acquiring unit 513 is used for the corresponding relation according to the sign of default TDM place in circuit and place in circuit, obtains the sign of the place in circuit of the described first circuit correspondence;
Message generation unit 514 is used for the sign of described place in circuit is added on the heading of described first message, generates first message that is added with the place in circuit sign;
Transmitting element 514, first message that is used for being added with the place in circuit sign sends to described protocol processes card;
Described encapsulation unit 523 is specially: according to the packaging information of described second tunneling, described first message that is added with the place in circuit sign is encapsulated as second message.
Receiving element 511 also is used for, and identifying described first message based on the packaging information of the sign of the place in circuit of described first message or described data message is the message that comprises the TDM payload.
Described second tunneling is multi protocol label exchange MPLS; The packaging information of described second tunneling is the information of MPLS tunnel label and the information of pseudo line tag.
The present invention also provides a kind of access device, comprising: user's plate of access device, the protocol processes card of access device, upper connective plate;
When being applied to descending process, described upper connective plate is used to receive second message with the encapsulation of second tunneling, and sends to the protocol processes card of described access device, and described second message comprises the TDM payload;
Described protocol processes card, be used for described second message is converted to first message that encapsulates with first tunneling, and send to user's plate of described access device, make described user's plate that described first message is sent to the TDM equipment that is connected with described access device, described first message comprises described TDM payload.
Described protocol processes card comprises:
Extraction unit is used for extracting packaging information from described second message;
The packaging information acquiring unit is used for according to the corresponding relation between the packaging information of the packaging information of the second default tunneling and first tunneling, obtains the packaging information of first tunneling of the packaging information correspondence of described second message;
Encapsulation unit is used for the packaging information according to described first tunneling, and described second message is packaged into first message.
The packaging information acquiring unit is specially: according to the corresponding relation of the sign of the packaging information of the second default tunneling and virtual circuit label, obtain the sign of packaging information corresponding virtual circuit tab of second tunneling of extraction; According to the corresponding relation between the packaging information of the sign of default virtual circuit label and first tunneling, search the packaging information of first tunneling of the sign correspondence of described virtual circuit label.
Described second tunneling is multi protocol label exchange MPLS; The packaging information of described second tunneling is the information of MPLS tunnel label and the information of pseudo line tag.
As shown in Figure 7, the application scenarios for access device of the present invention comprises: master control borad (CPU), user's plate, exchange chip, protocol processes card, upper connective plate.In this application scenarios, be that MPLS (Multi-Protocol Label Switching, multi protocol label exchange) is an example with second tunneling.
The protocol processes jig is equipped with the protocol processes function, can carry out that mpls protocol is handled and the encapsulation and the conversion of data message, to the TDM message make amendment, operations such as encapsulation and decapsulation.
The exchange chip of user's plate adopts FPGA (Field-Programmable Gate Array, field programmable gate array), supports the relevant configuration of TDM service circuit, finishes the identification to the TDM message.
Exchange chip is finished the data exchanging function of tdm traffic between user's plate and protocol processes card.
As shown in Figure 8, be the structure chart of the network at access device of the present invention place.First access device receives first message from a TDM equipment, is converted to second message, sends to second access device of opposite end by packet switching network.Second access device of opposite end receives second message by packet switching network from first access device, is converted to first message, sends to the 2nd TDM equipment, by the 2nd TDM equipment the TDM message is handled.
Preserve TDM place in circuit attribute list on user's plate, the relevant information that is used to preserve the TDM place in circuit, the just corresponding relation between the sign of TDM place in circuit and place in circuit.When user's plate is received data message from the TDM service circuit, in this table, carry out matched and searched according to the TDM place in circuit, carry out the message encapsulation according to match information, wherein match information can be multiple mode, such as customization type or vlan information etc.For convenience, adopt VLAN to identify TDM here and insert, place in circuit be designated vlan information.Just the TDM place in circuit identifies by VLAN (Virtual Local Area Network, VLAN), and user's plate adds vlan information in the TDM message of receiving, exchange to the protocol processes card by exchange chip.As shown in Figure 9, be packaged into the data structure schematic diagram of MPLS form for the TDM message.Figure 10 is the data structure schematic diagram of the MPLS form when being the sign of place in circuit in two layers of when exchange with VLAN.Figure 11 be two layers when exchange place in circuit be designated customization type the time the data structure schematic diagram of MPLS form.
Described protocol processes card is preserved TDM place in circuit information table, virtual circuit (VC, Virtual Circuit) label list and multi protocol label switch label table in advance.
The vlan information of TDM place in circuit information table preservation sign TDM business, the packaging information of message are (promptly, the packaging information of first tunneling mentioned above) and the corresponding relation between the sign of virtual circuit label, packaging information depends in the packaged type of TDM message and the described packaged type value of field in the message, can be MEF (TDM over Ethernet, carrying TDM business on the Ethernet), MPLS (TDM over MPLS, carry the TDM business in the multiprotocol label switching) or IP (TDM over IP, carrying TDM business on the IP network).Here for convenience, setting is the MPLS encapsulation, and packaging information is exactly PW (Pseudo Wire, the pseudo-line) label of outer field MPLS tunnel label and internal layer so.
The sign (VC ID) of described virtual circuit label list record virtual circuit label and the corresponding relation between the TDM place in circuit.
Described multi protocol label switch label table is preserved the sign of virtual circuit label and the corresponding relation between the MPLS label information (that is the packaging information of second tunneling mentioned above).This MPLS label comprises vpn label (PW label) and outer layer label (MPLS tunnel label).
Adopt functional part described above and data table items, realize the transmission of TDM message.Below in conjunction with the above-mentioned functions parts, the method that access access device of the present invention realizes realizing in the method equipment of the professional relaying of time division multiplexing tdm the professional relaying of TDM is described, comprise up process and descending process.Wherein, up direction is meant that user side TDM is linked into PSN (packet switched network, packet switching network).During up direction, be that MPLS is an example with second tunneling.Comprise following steps:
Step 71, a TDM message (first message with the encapsulation of first tunneling mentioned above) enters user's plate, and it is the TDM message that user's plate identifies type of message, can be based on the packaging information of place in circuit sign or message for the identification of TDM message.If TDM inserts, user's plate recognition data message place in circuit, and the TDM place in circuit attribute list on the inquiring user plate then add the vlan information in the circuit attribute list in the one TDM heading to.
Step 72, user's plate sends to exchange chip to a TDM message that adds vlan information, this exchange chip directly exchanges, because inline mouthful of VLAN of protocol processes card correspondence is identical with the VLAN at the professional place of TDM, such TDM message is switched to the protocol processes card.
Step 73, it is the TDM message that the protocol processes card is discerned this message, parses the packaging information of this message; According to packaging information inquiry TDM place in circuit information table, obtain the sign VC ID of virtual circuit label; According to VC ID inquiry multi protocol label switch label table, obtain the MPLS label information, the MPLS label information comprises: the ectonexine label of the outlet opposite end edge PE of provider, next jumping media access control information MAC etc.; According to described MPLS label information, the TDM message is encapsulated as the data message (second message with the encapsulation of second tunneling mentioned above) of MPLS (TDM over MPLS) form.Jump to step 74 and step 77 then respectively.
Step 74 if find next to jump the medium access control MAC Address, then is encapsulated in this MAC Address the 2nd TDM header, sends this message and transmits to exchange chip;
Step 75, exchange chip carries out two layers of exchange to the 2nd TDM message from the protocol processes card, sends this message to upper connective plate.
Step 76, upper connective plate are not done other processing, directly send this message.
Step 77 if do not find next-hop mac address, then sends a message to master control borad CPU, is transmitted the TDM message or is triggered address resolution protocol (ARP, Address Resolution Protocol) parsing next-hop mac address by this CPU.Dotted line presentation protocol transaction card among Fig. 8 does not transmit control message to CPU when finding next-hop mac address.
Below describe down direction, down direction is meant that the PSN network inserts side to the TDM of user side, and the processing procedure of this data message comprises following steps:
Step 81, the second descending tdm data message (second message with the encapsulation of second tunneling mentioned above) enters upper connective plate;
Step 81, this upper connective plate do not deal with message and directly send to exchange chip;
Step 83, exchange chip judge that to the type of data message if the TDM message of MPLS encapsulation then sends to the protocol processes card with this message, execution in step 84 then; Exchange to user's plate otherwise directly carry out two or three layers, promptly walk normal forwarding process.
Step 84, described protocol processes card extracts the MPLS label information from the TDM message of described MPLS encapsulation; Described MPLS label information is MPLS tunnel label (being outer layer label) and PW label (being vpn label); With PW searching label multi protocol label switch label table (MPLS label list), obtain the sign of virtual circuit label; Utilize this virtual circuit searching label TDM place in circuit information table, obtain packaging information and vlan information; Re-assembly the message encapsulation according to this packaging information, the protocol processes card is revised as first tunneling with the TDM message of MPLS packaged type, and adds vlan information in heading; Send this message (first message with the encapsulation of first tunneling mentioned above) then to exchange chip.
Step 85, exchange chip are carried out Layer 2 data and are forwarded to user's plate.
Step 86, user's buttress is switched directly to the TDM place in circuit according to the two-layer retransmitting table on it, i.e. the TDM access interface of upstream device.
Compared with prior art, the present invention carries out relaying with the tdm data message that the tdm traffic of multiple different first packaged types is converted to second packaged type, utilize the ability of the processing TDM of the upstream device that connects to handle tdm data, implementation is simple, made full use of the disposal ability of associate device, satisfy present access device and support the demand of TDM service access, strengthened the access capability of broadband access equipment.
Described method embodiment is corresponding with described device embodiment, the description of relevant portion gets final product among the part comparable device embodiment that does not describe in detail in method embodiment, and the description of relevant portion gets final product among the part reference method embodiment that does not describe in detail in device embodiment.
One of ordinary skill in the art will appreciate that, realize that all or part of step in the foregoing description method is to instruct relevant hardware to finish by program, described program can be stored in the computer read/write memory medium, this program is when carrying out, comprise step as above-mentioned method embodiment, described storage medium, as: magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
In each method embodiment of the present invention; the sequence number of described each step can not be used to limit the sequencing of each step; for those of ordinary skills, under the prerequisite of not paying creative work, the priority of each step is changed also within protection scope of the present invention.
The above is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (14)
1. the method for the professional relaying of access device realization time division multiplexing tdm is characterized in that, comprising:
Step 11, user's plate of access device receives first message with the encapsulation of first tunneling, and sends to the protocol processes card of described access device, and described first message comprises the TDM payload;
Step 12, described protocol processes card is converted to described first message second message that encapsulates with second tunneling, and send to the upper connective plate of described access device, make described upper connective plate send described second message in the described packet switching network, described second message comprises described TDM payload, and can transmit in the described packet switching network.
2. access device according to claim 1 is realized the method for the professional relaying of TDM, it is characterized in that, described protocol processes card comprises the step that described first message is converted to second message that encapsulates with second tunneling:
Step 121, described protocol processes card parses the packaging information of described first message;
Step 122, described protocol processes card be according to the corresponding relation between the packaging information of the packaging information of the first default tunneling and second tunneling, obtains the packaging information of second tunneling of the packaging information correspondence of described first message;
Step 123, described protocol processes card are encapsulated as second message according to the packaging information of described second tunneling with described first message.
3. access device according to claim 2 is realized the method for the professional relaying of TDM, it is characterized in that described step 122 comprises:
Described protocol processes card obtains the sign of the packaging information corresponding virtual circuit tab of described first tunneling that parses according to the corresponding relation between the sign of the packaging information of the first default tunneling and virtual circuit label;
Described protocol processes card is according to the corresponding relation between the packaging information of the sign of default virtual circuit label and second tunneling, obtains the packaging information of second tunneling of the sign correspondence of described virtual circuit label.
4. access device according to claim 3 is realized the method for the professional relaying of TDM, it is characterized in that described step 11 comprises:
Described user's plate is discerned the place in circuit of described first message;
Described user's buttress is according to the corresponding relation of the sign of default TDM place in circuit and place in circuit, obtains the sign of place in circuit of the place in circuit correspondence of described first message;
Described user's plate is added on the sign of described place in circuit in the heading of described first message, generates first message that is added with the place in circuit sign;
First message that described user's plate will be added with the place in circuit sign sends to described protocol processes card;
Described step 123 is specially: described protocol processes card is encapsulated as second message according to the packaging information of described second tunneling with described first message that is added with the place in circuit sign.
5. access device according to claim 3 is realized the method for the professional relaying of TDM, it is characterized in that, described second tunneling is multi protocol label exchange MPLS; The packaging information of described second tunneling is the information of MPLS tunnel label and the information of pseudo line tag.
6. access device according to claim 4 is realized the method for the professional relaying of TDM, it is characterized in that described step 11 also comprises:
It is the message that comprises the TDM payload that described user's plate identifies described first message based on the packaging information of the sign of the place in circuit of described first message or described data message.
7. the method for the professional relaying of access device realization time division multiplexing tdm is characterized in that, comprising:
Step 21, the upper connective plate of access device receives second message with the encapsulation of second tunneling, and sends to the protocol processes card of described access device, and described second message comprises the TDM payload;
Step 22, described protocol processes card is converted to described second message first message that encapsulates with first tunneling, and send to user's plate of described access device, make described user's plate that described first message is sent to the TDM equipment that is connected with described access device, described first message comprises described TDM payload.
8. access device according to claim 7 is realized the method for the professional relaying of TDM, it is characterized in that,
The protocol processes card of described access device comprises the step that described second message is converted to first message:
Step 221, described protocol processes card extracts packaging information from described second message;
Step 222, described protocol processes card be according to the corresponding relation between the packaging information of the packaging information of the second default tunneling and first tunneling, obtains the packaging information of first tunneling of the packaging information correspondence of described second message;
Step 223, described protocol processes card are packaged into first message according to the packaging information of described first tunneling with described second message.
9. access device according to claim 8 is realized the method for the professional relaying of TDM, it is characterized in that described step 222 comprises:
Step 2221, described protocol processes card be according to the corresponding relation of the sign of the packaging information of the second default tunneling and virtual circuit label, obtains the sign of packaging information corresponding virtual circuit tab of second tunneling of extraction;
Step 2222, described protocol processes card be according to the corresponding relation between the packaging information of the sign of default virtual circuit label and first tunneling, searches the packaging information of first tunneling of the sign correspondence of described virtual circuit label.
10. an access device comprises: user's plate of access device, the protocol processes card of access device, upper connective plate; It is characterized in that,
Described user's plate is used to receive first message with the encapsulation of first tunneling, and sends to the protocol processes card of described access device, and described first message comprises the TDM payload;
Described protocol processes card, be used for described first message is converted to second message that encapsulates with second tunneling, and send to the upper connective plate of described access device, make described upper connective plate send described second message in the described packet switching network, described second message comprises described TDM payload, and can transmit in the described packet switching network.
11. access device according to claim 10 is characterized in that, described protocol processes card comprises:
Resolution unit is used to parse the packaging information of described first message;
The packaging information acquiring unit is used for according to the corresponding relation between the packaging information of the packaging information of the first default tunneling and second tunneling, obtains the packaging information of second tunneling of the packaging information correspondence of described first message;
Encapsulation unit is used for the packaging information according to described second tunneling, and described first message is encapsulated as second message.
12. access device according to claim 11 is characterized in that, described user's plate comprises:
Receiving element is used to receive described first message;
Recognition unit is used to discern the place in circuit of described first message;
Place in circuit sign acquiring unit is used for the corresponding relation according to the sign of default TDM place in circuit and place in circuit, obtains the sign of the place in circuit of the described first circuit correspondence;
The message generation unit is used for the sign of described place in circuit is added on the heading of described first message, generates first message that is added with the place in circuit sign;
Transmitting element, first message that is used for being added with the place in circuit sign sends to described protocol processes card;
Described encapsulation unit is specially: according to the packaging information of described second tunneling, described first message that is added with the place in circuit sign is encapsulated as second message.
13. an access device comprises: user's plate of access device, the protocol processes card of access device, upper connective plate; It is characterized in that,
Described upper connective plate is used to receive second message with the encapsulation of second tunneling, and sends to the protocol processes card of described access device, and described second message comprises the TDM payload;
Described protocol processes card, be used for described second message is converted to first message that encapsulates with first tunneling, and send to user's plate of described access device, make described user's plate that described first message is sent to the TDM equipment that is connected with described access device, described first message comprises described TDM payload.
14. access device according to claim 13 is characterized in that, described protocol processes card comprises:
Extraction unit is used for extracting packaging information from described second message;
The packaging information acquiring unit is used for according to the corresponding relation between the packaging information of the packaging information of the second default tunneling and first tunneling, obtains the packaging information of first tunneling of the packaging information correspondence of described second message;
Encapsulation unit is used for the packaging information according to described first tunneling, and described second message is packaged into first message.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201010221276.4A CN101888336B (en) | 2010-06-29 | 2010-06-29 | Access device realizes method and the access device of TDM business relaying |
| PCT/CN2010/079066 WO2012000282A1 (en) | 2010-06-29 | 2010-11-24 | Method for implementing time division multiplex (tdm) service relay in access device and access device thehrof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010221276.4A CN101888336B (en) | 2010-06-29 | 2010-06-29 | Access device realizes method and the access device of TDM business relaying |
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| CN101888336B CN101888336B (en) | 2016-02-10 |
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| WO2012000282A1 (en) | 2012-01-05 |
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