CN100542073C - Transmission process plate and automatic-protecting switching device in the radio network controller - Google Patents
Transmission process plate and automatic-protecting switching device in the radio network controller Download PDFInfo
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- CN100542073C CN100542073C CNB200310122605XA CN200310122605A CN100542073C CN 100542073 C CN100542073 C CN 100542073C CN B200310122605X A CNB200310122605X A CN B200310122605XA CN 200310122605 A CN200310122605 A CN 200310122605A CN 100542073 C CN100542073 C CN 100542073C
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Abstract
The invention provides a kind of transmission process plate, comprising: optical transceiver is used for reception/transmission STM frame; The VC4 framer provides the conversion between STM frame and the VC4 stream; VC12 mapper/framer provides the conversion between VC4 stream and the VC12 stream; The subcard slot is used to receive first subcard or second subcard, and first subcard provides the conversion between VC12 stream and the atm cell stream, and second subcard provides the conversion between VC12 stream and the IP stream of packets; A field programmable gate array provides the Transmission Convergence of VC4 stream, and is connected with described first subcard or described second subcard that receive in the described subcard slot; A network processing unit is connected with described field programmable gate array, realizes the ATM Adaptation Layer termination or realizes the IP termination; An ethernet mac module; And a physical layer interface, be connected to outside Ethernet power board.Transmission process plate of the present invention is supported multiple function, as STM-1/STM-4, VC4/VC12 (IMA), supports the ATM transmission, supports the IP transmission.Simultaneously, provide easy APS mechanism.
Description
Technical field
The present invention relates to mobile communication system, relate in particular to transmission process plate and APS (APS) mechanism thereof in the radio network controller of mobile communication system, used.
Background technology
In mobile radio system shown in Figure 1, label 103 expression core net (CN), label 104 expression wireless access networks, label 105 expression subscriber equipmenies.Wireless access network 104 comprises at least one radio network controller (RNC) 1041 and a plurality of node-b 1042.In some mobile communication system, node-b 1042 is called the base station, radio network controller 1041 is called base station controller.((North America transmission standard-T1)/(Japanese transmission standard-J1) circuit links to each other with core net 103, other radio network controller (not shown), node-b 1042 J1 European transmission standard-E1)/T1 radio network controller 1041, transmission of control signals and/or data-signal between the equipment that links to each other with STM-1 (1 grade of synchronous transfer mode)/E1.
General two types transmission process plate, i.e. STM transmission process plate and the E1 transmission process plate of in radio network controller 1041, being provided with.In a radio network controller, safeguard two types transmission process plate simultaneously, obviously increased the shipment cost of system maintenance expense and parts.
The plate of STM transmission process is generally only supported the VC4 among the STM-1.In the ATM switch of some producer, STM transmission process plate is also supported STM-4 and VC12.But there is not the STM interface board to support VC4 and VC12 simultaneously.Can realize IMA (inverse multiplexing for atm) function in the E1 transmission process plate.In addition, existing STM transmission process plate and E1 transmission process plate are all only realized the ATM transmission, do not consider the evolution to the IP transmission.
Summary of the invention
First purpose of the present invention is to solve the above-mentioned problems in the prior art, provides a kind of and not only supports VC4 but also support VC12, not only supports the ATM transmission but also support the transmission process plate that IP transmits.
Second purpose of the present invention is to provide a kind of automatic-protecting switching device that is applicable to transmission process plate of the present invention.
In order to realize first purpose of the present invention, the invention provides a kind of transmission process plate, it is characterized in that comprising:
At least one optical transceiver, be used for from/to STM circuit reception/transmission STM frame;
At least one VC4 framer is connected with described at least one optical transceiver, is used to provide the conversion between STM frame and the VC4 stream;
At least one VC12 mapper/framer is connected with described at least one VC4 framer, is used to provide the conversion between VC4 stream and the VC12 stream;
A sub-card slot, be used to receive first subcard or second subcard, being connected between described first subcard or described second subcard and described at least one VC12 mapper/framer is provided, described first subcard provides the conversion between VC12 stream and the atm cell stream, and described second subcard provides the conversion between VC12 stream and the IP stream of packets;
A field programmable gate array is connected with described at least one VC4 framer, is used to provide VC4 the Transmission Convergence of stream, and is connected with described subcard slot, and then is connected with described first subcard or described second subcard that receive in the described subcard slot;
A network processing unit is connected with described field programmable gate array, is used to realize the ATM Adaptation Layer termination or realizes the IP termination;
An ethernet mac module is connected with described network processing unit, is used to solve shared medium access collision; And
A physical layer interface is used for described ethernet mac module is connected to outside Ethernet power board.
In order to realize second purpose of the present invention, the invention provides the automatic-protecting switching device of a kind of pair of transmission process plate, it is characterized in that comprising:
An APS switch;
First block of transmission process plate and second block of transmission process plate, each piece transmission process plate comprises:
First optical transceiver, be used for from/to article one STM circuit reception/transmission STM frame;
Second optical transceiver, be used for from/to second STM circuit reception/transmission STM frame;
The one VC4 framer is used to provide the conversion between STM frame and the VC4 stream;
The 2nd VC4 framer is used to provide the conversion between STM frame and the VC4 stream;
The one VC12 mapper/framer is connected with a described VC4 framer under the control of described APS switch or is connected with described the 2nd VC4 framer, is used to provide the conversion between VC4 stream and the VC12 stream;
A sub-card slot, be used to receive first subcard or second subcard, being connected between described first subcard or described second subcard and the described VC12 mapper/framer is provided, described first subcard provides the conversion between VC12 stream and the atm cell stream, and described second subcard provides the conversion between VC12 stream and the IP stream of packets;
A field programmable gate array is used to provide VC4 the Transmission Convergence of stream, and is connected with described subcard slot, and then is connected with described first subcard or described second subcard that receive in the described subcard slot;
A network processing unit is connected with described field programmable gate array, is used to realize the ATM Adaptation Layer termination or realizes the IP termination;
An ethernet mac module is connected with described network processing unit, is used to solve shared medium access collision; And
A physical layer interface is used for described ethernet mac module is connected to outside Ethernet power board;
The feature of described automatic-protecting switching device also is:
First optical transceiver of described first block of transmission process plate is connected with a VC4 framer of described first block of transmission process plate;
First optical transceiver of described second block of transmission process plate is connected with the 2nd VC4 framer of described first block of transmission process plate;
Under the control of described APS switch; the one VC12 mapper/framer of described first block of transmission process plate receives VC4 stream from a VC4 framer or the 2nd VC4 framer of described first block of transmission process plate, but sends VC4 stream to a VC4 framer and the 2nd VC4 framer simultaneously.
The present invention also provides a kind of automatic-protecting switching device of single transport disposable plates, it is characterized in that comprising:
An APS switch;
First optical transceiver, be used for from/to article one STM circuit reception/transmission STM frame;
Second optical transceiver, be used for from/to second STM circuit reception/transmission STM frame;
The one VC4 framer is used to provide the conversion between STM frame and the VC4 stream;
The 2nd VC4 framer is used to provide the conversion between STM frame and the VC4 stream;
First optical transceiver, second optical transceiver, a VC4 framer and the 2nd VC4 framer are on same block of transmission process plate;
The one VC12 mapper/framer is connected with a described VC4 framer under the control of described APS switch or is connected with described the 2nd VC4 framer, is used to provide the conversion between VC4 stream and the VC12 stream;
A sub-card slot, be used to receive first subcard or second subcard, being connected between described first subcard or described second subcard and the described VC12 mapper/framer is provided, described first subcard provides the conversion between VC12 stream and the atm cell stream, and described second subcard provides the conversion between VC12 stream and the IP stream of packets;
A field programmable gate array is used to provide VC4 the Transmission Convergence of stream, and is connected with described subcard slot, and then is connected with described first subcard or described second subcard that receive in the described subcard slot;
A network processing unit is connected with described field programmable gate array, is used to realize the ATM Adaptation Layer termination or realizes the IP termination;
An ethernet mac module is connected with described network processing unit, is used to solve shared medium access collision; And
A physical layer interface is used for described ethernet mac module is connected to outside Ethernet power board;
The feature of described automatic-protecting switching device also is:
Described first optical transceiver is connected with a described VC4 framer;
Described second optical transceiver is connected with described the 2nd VC4 framer;
Under the control of described APS switch, a described VC12 mapper/framer receives VC4 stream from a described VC4 framer or the 2nd VC4 framer, and sends VC4 stream to a described VC4 framer and described the 2nd VC4 framer.
According to the present invention, in radio network controller, only need to safeguard one type transmission process plate, STM transmission process plate promptly of the present invention.Thereby, reduced the shipment cost of system maintenance expense and parts.Compare with E1 transmission process plate with conventional STM transmission process plate, the firm and hard more function that showed of STM transmission process of the present invention comprises STM-1/STM-4, VC4/VC12 function etc., has both supported the ATM transmission, supports the IP transmission again.
In addition, utilize of the present invention pair of transmission process plate or single disposable plates automatic-protecting switching device, can realize the redundant or not redundant mechanism of APS flexibly of tape handling plate.If combined standard AdvancedTCA cabinet, the realization of this APS mechanism is more easy.
After reading the detailed description of embodiment of the present invention in conjunction with the accompanying drawings, other characteristics of the present invention and advantage will become clearer.
Description of drawings
Fig. 1 is the schematic diagram of mobile radio system;
Fig. 2 is that transmission process plate according to the present invention is used for the ATM structural representation in when transmission;
Fig. 3 is that transmission process plate according to the present invention is used for the IP structural representation in when transmission;
Fig. 4 is the APS structural representation of band transmission process plate redundancy under the STM-1 pattern;
Fig. 5 is structure shown in Figure 4 reconfigures the structure that forms after certain piece transmission process plate breaks down a schematic diagram;
Fig. 6 is not with the APS structural representation of transmission process plate redundancy under the STM-1 pattern;
Fig. 7 is the APS structural representation of band transmission process plate redundancy under the STM-4 pattern.
Embodiment
Describe the specific embodiment of the present invention in detail below in conjunction with accompanying drawing.
Fig. 1 is the schematic diagram of mobile radio system, and transmission process plate of the present invention can be used in the radio network controller shown in Figure 1 1041, is used for linking to each other with node-b 1042 with core net 103, other radio network controller (not shown).
Fig. 2 is that transmission process plate according to the present invention is used for the ATM structural representation in when transmission.The left side of Fig. 2, the front panel of expression transmission process plate, the right side of Fig. 2, the rear board of expression transmission process plate.Label 201 to 204 expression optical transceivers, label 205 expression SDH VC4 framers, label 206 to 209 expression VC12 mapper/framers, label 210 expression subcards, IMA (inverse multiplexing for atm) module that comprises in label 211 to the 214 expression subcards 210, label 215 expression FPGA (field programmable gate array), TC (Transmission Convergence) module among the label 216 expression FPGA, label 217 expression network processing units, label 218 expression gigabit Ethernet MAC (medium access control) modules, label 219 and 220 expression physical layer interfaces, label 221 expression control units, label 222 expression physical layer interfaces.
The transmission process plate of Fig. 2 both can have been supported 4 STM-1 ports, can support a STM-4 port again, and this is by selecting suitable VC4 framer 205 predetermined in the static configuration of transmission process plate.As a kind of example, the transmission process plate can be arranged so that optical transceiver 201 to 204 receives the STM-1 signal from four STM-1 circuits, perhaps make optical transceiver 201 receive the STM-4 signal from a STM-4 circuit.
Transmission process plate shown in Figure 2 can link to each other with node-b (base station) with core net simultaneously.Article 4, the STM-1 circuit can be configured to IuB, IuR and Iu interface neatly.Iu is the interface between core net and the radio network controller, and IuR is two interfaces between the radio network controller, and IuB is the interface between node-b (base station) and the radio network controller.
Though the STM port can as above dispose, different configuration combinations are not construed as limiting the invention.
For the STM-1/STM-4 circuit, the transmission process plate of Fig. 2 both can be supported VC4, can support VC12 again, and this also is predetermined in the static configuration of transmission process plate.
In the VC12 mode, can be by on the transmission process plate, using different subcards, make the transmission process plate that support (Fig. 2 that ATM is transmitted is provided, transmission process this moment plate is in first kind of configuring condition), support to the IP transmission (Fig. 3, transmission process this moment plate is in second kind of configuring condition) perhaps is provided.Support about to the IP transmission will describe with reference to Fig. 3 hereinafter.
In the VC4 mode (transmission process this moment plate is in the third configuring condition), VC12 mapper/framer 206 to 209 is bypassed, and the VC4 output of SDH VC4 framer 205 is directly inputted to FPGA 215.The VC4 output of SDH VC4 framer 205 can not guarantee TC (Transmission Convergence) sublayer (sublayer of ATM physical layer), thereby provides VC4 the transmission convergence sublayer of stream by the Transmission Convergence module 216 among the FPGA 215.Transmission convergence sublayer is a sublayer of atm network physical layer, and how the information that it has defined cell is transmitted on physical medium.Mainly finish the function of five aspects: the generation and the recovery of (1) transmission frame; (2) cell delineation is promptly discerned the border of cell according to certain mechanism; (3) produce header error check code (HEC) or by the correctness of the HEC check letter head of receiving; (4) transmission frame self adaptation, the format match when finishing the conversion of cell flow and transmission frame; (5) some idle cells are inserted in cell rate decoupling zero, so that make the rate adapted of atm cell stream become the speed of transmission medium.
Used subcard 210 (i.e. first kind of configuration) on the transmission process plate shown in Figure 2, so that the support to the ATM transmission to be provided.Has an IMA module 211 to 214 with respect to each VC12 mapper/framer 206 to 209 in the subcard 210.IMA module 211 to 214 has the function of ATM Transmission Convergence.The IMA technology is the high-speed atm cell flow to be distributed to a plurality of standard low speed transmissions passages (E1 basic group transmission channel) transmit, and then carries out compound technology.
Interface between IMA module 211 to 214 and the FPGA 215 is the Any-PHY physical interface, rather than Utopia (universal test and the operating physical interface that are used for ATM) the 2nd layer interface or POS-PHY (encapsulating on the SONET physical layer) the 2nd layer interface.The Any-PHY physical interface not only can be handled cell but also can handle grouping, is a kind of flexible and general physical interface.
The bus of the interface of network processing unit 217 is the 2nd layer of Utopia or POS-PHY interface, and it can only support 31 physical equipments.But corresponding 63 VC12 (E1) of a STM-1 circuit of transmission process plate, total E1 number is 252, so network processing unit 217 must be taken turns 252 equipment of seeking, thereby need FPGA 215 that the bus of the interface of network processing unit 217 is converted to Any-PHY (the Any-PHY physical interface allows to surpass the connection of 31 equipment), promptly carry out the address wire expansion by 215 pairs of network processing units of FPGA 217.
Especially, the interface between network processing unit 217 and the FPGA 215 can be the 3rd layer of (PL3) interface of POS-PHY.The PL3 interface has been determined the interface between physical chip (for example ATM, POS and gigabit Ethernet framer) and link layer chip (for example ATM, IP and gigabit Ethernet forwarding unit).The PL3 interface by
Development group was in exploitation in 1998.
Network processing unit (NP) 217 is realized AAL2 (2 class ATM Adaptation Layer)/AAL5 (5 class ATM Adaptation Layer) termination, mainly is the mutual conversion between ATM cell and the IP grouping.
Gigabit Ethernet MAC module 218 is arranged between network processing unit 217 and the physical layer interface 219,220, and physical layer interface 219, the 220 star-like gigabit switching bus by backboard is again handed over net to change plate with gigabit ether to be connected.The effect of gigabit Ethernet MAC module 218 is transmission and reception data between network processing unit 217 and physical layer interface 219,220, guarantee that the transmission of each frame data on the gigabit Ethernet all follows the medium access rule of IEEE 802.3 standard codes, promptly solve sharing the collision problem of medium access.
For those skilled in the art, optical transceiver, VC4 framer, VC12 framer, IMA module, AAL termination etc. are general knowledge, and be visible about ITU and atm forum standard about their description.
Fig. 3 is that transmission process plate according to the present invention is used for the IP structural representation in when transmission.Identical among most of parts among Fig. 3 and Fig. 2, thereby represent with corresponding label.For example, optical transceiver is denoted as 201 to 204 in Fig. 2, then is denoted as 301 to 304 in Fig. 3.In order to save the explanation book, only different parts of function or newly-increased parts are elaborated below.
With identical described in Fig. 2, the transmission process plate of Fig. 3 both can have been supported 4 STM-1 ports, can support a STM-4 port again; Both VC4 can be supported, VC12 can be supported again.In the VC4 mode (being the third configuration mentioned above), VC12 mapper/framer 306 to 309 is bypassed, and the VC4 output of SDH VC4 framer 305 is directly inputted to FPGA 315.
Has a HDLC module 311 to 314 with respect to each VC12 mapper/framer 306 to 309 in the subcard 310.Interface between HDLC module 311 to 314 and the FPGA 315 is the Any-PHY physical interface, rather than Utopia the 2nd layer interface or POS-PHY the 2nd layer interface.
Network processing unit (NP) 317 is realized the IP termination.IP termination mainly is to finish HDLC to compress or the like the agreement of being correlated with to mutual conversion, IP forwardings, IP QoS, the IP head of IP.IP terminates mainly and the realization of IP transmission among the 3GPP R5 has relation.The IP transmission has a variety of methods, such as CIP, PPP-MUX, MPLS etc.Adopt network processing unit 317 to realize the IP termination, can realize various functions neatly.Interface between network processing unit 317 and the FPGA 315 is the 3rd layer of (PL3) interface of POS-PHY.
The following describes the redundancy strategy and the APS mechanism of transmission process plate of the present invention under the STM-1 pattern.
Fig. 4 is the APS structural representation of band transmission process plate redundancy under the STM-1 pattern.Two blocks of transmission process plates shown in Fig. 4.Circuit STM-1 #1B, STM-1 #2B, STM-1 #3B, STM-1 #4B are respectively the redundant circuits of circuit STM-1 #1A, STM-1 #2A, STM-1 #3A, STM-1#4A.Transmission process plate 450 is redundant cards of transmission process plate 440.
Label 406,416 schematically shows the parts (when transmission process plate 440 and 450 all is used for the ATM transmission) between the label 206 to 218 among Fig. 2, the perhaps parts between the label among Fig. 3 306 to 318 (when transmission process plate 440 and 450 all is used for the IP transmission).Like this, Transmission Convergence (TC) module, VC12 mapper/framer, IMA module/HDLC module, AAL termination block/IP termination block, gigabit Ethernet MAC module, the network processing unit that comprise VC4 in the module 406,416.
Label 419,420 expression physical layer interfaces all are connected with gigabit Ethernet MAC module in the module 406.Label 429,430 expression physical layer interfaces all are connected with gigabit Ethernet MAC module in the module 416.Each physical layer interface is connected with the Gigabit Ethernet port of transmission process plate.
Certainly, on transmission process plate 440 and 450, also has separately control unit.APS switch mentioned above is controlled by the APS controller on each transmission process plate 440 and 450 (as the control unit among the control unit among Fig. 2 221 or Fig. 3 321).
Structure shown in Figure 4 adopts static load to share, and promptly each the piece disposable plates in mutually redundant two blocks of transmission process plates 440 and 450 is responsible for two STM-1 circuits under the normal condition.If between optical transceiver and SDH VC4 framer, carry out cross-linked, then can be very effectively and realize APS mechanism simply.Illustrate this cross-linked and APS is machine-processed below with reference to Fig. 4.
In Fig. 4, do following hypothesis.Suppose transmission process plate 440 responsible circuit STM-1 #1A and STM-1 #3A, transmission process plate 450 is responsible for circuit STM-1 #2A and STM-1 #4A.
For STM-1 #1A circuit (the main circuit of using), receive the STM-1 signal by optical transceiver 401, deliver to the 1st port in SDH VC4 framer 405 left sides.SDH VC4 framer 405 extracts the VC4 signal from the STM-1 signal, deliver to module 406.About the operation after operation within the module 406 and the module 406, with reference to the explanation of Fig. 2 and Fig. 3.The signal that module 406 receives from physical layer interface 419,420, be converted to the VC4 signal through module 406, under the effect of APS switch, be input to the 1st and the 2nd port on SDH VC4 framer 405 right sides, and then being input to optical transceiver 401 and 411, via line STM-1 #1A (the main circuit of using), STM-1 #1B (extension wire) send then.Like this, relevant with STM-1 #1B circuit with a pair of APS circuit STM-1 #1A circuit framer is positioned on the same block of transmission process plate on 440.
In like manner, for STM-1 #3A circuit, optical transceiver 403 is from circuit STM-1 #3A received signal; And optical transceiver 403 and 413 sends signal simultaneously to circuit STM-1 #3A (the main circuit of using) and STM-1 #3B (extension wire).The framer relevant with STM-1 #3B circuit with a pair of APS circuit STM-1 #3A circuit is positioned on the same block of transmission process plate on 440.
In like manner, for STM-1 #2A circuit, optical transceiver 402 is from circuit STM-1 #2A received signal; And optical transceiver 402 and 412 sends signal simultaneously to circuit STM-1 #2A (the main circuit of using) and STM-1 #2B (extension wire).The framer relevant with STM-1 #2B circuit with a pair of APS circuit STM-1 #2A circuit is positioned on the same block of transmission process plate on 450.
In like manner, for STM-1 #4A circuit, optical transceiver 404 is from circuit STM-1 #4A received signal; And optical transceiver 404 and 414 sends signal simultaneously to circuit STM-1 #4A (the main circuit of using) and STM-1 #4B (extension wire).The framer relevant with STM-1 #4B circuit with a pair of APS circuit STM-1 #4A circuit is positioned on the same block of transmission process plate on 450.
As shown in Figure 4, cross-linked in order to carry out, need 8 differential lines (shown in dotted ellipse among Fig. 4).A kind of easy method is to utilize the AdvancedTCA phase case of standard as the sub-frame in the radio network controller.In the backboard of this AdvancedTCA cabinet, set in advance the upgrading channel interface, this interface is made up of 10 differential links.Every differential link is two interconnections between the adjacent or non-conterminous integrated circuit board groove position.
Structure shown in Fig. 4 adopts cross-linkedly between optical transceiver and SDH VC4 framer, has guaranteed that the framer relevant with a pair of APS circuit is positioned on the same block of transmission process plate.Therefore; under the situation that a circuit in a pair of APS circuit breaks down; can directly obtain the required full detail of operation APS operation with this to the APS controller on the transmission process plate at the relevant framer place of circuit from framer; as move the required K1/K2 byte of MSP (multiplex section protection) agreement; LOS (dropout), SF (Signal Fail), SD (Signal Degrade), OOF (OOF) or the like, and need be between two blocks of transmission process plates exchange message.The APS controller is correspondingly controlled the APS switch after obtaining information needed from framer, makes the circuit that never breaks down receive and send signal.
Under the situation that a transmission process plate in two blocks of transmission process plates shown in Figure 4 breaks down, also can easily the transmission process plate that does not break down be configured to the transmission process plate of " no APS structure " and work on.Hereinafter describe in detail with reference to Fig. 5.
Fig. 5 is structure shown in Figure 4 reconfigures the structure that forms after certain piece transmission process plate breaks down a schematic diagram.Suppose that the transmission process plate 450 among Fig. 4 breaks down, then can reconfigure transmission process plate 440, make optical transceiver 402,404 be connected, and then be connected with module 406 through SDH VC4 framer 405 with SDH VC4 framer 405.Transmission process plate 440 after so reconfiguring as shown in Figure 5, it is the transmission process plate of " no APS structure ".As shown in Figure 5, optical transceiver 401 from/to circuit STM-1 #1A reception/transmission signal, optical transceiver 402 from/to circuit STM-1 #2A reception/transmission signal, optical transceiver 403 from/to circuit STM-1 #3A reception/transmission signal, optical transceiver 404 from/to circuit STM-1 #4A reception/transmission signal.
In like manner, when the transmission process plate 440 among Fig. 4 breaks down, also transmission process plate 450 can be reconfigured for " no APS structure ", and optical transceiver 411 from/to circuit STM-1#1B reception/transmission signal, optical transceiver 412 from/to circuit STM-1 #2B reception/transmission signal, optical transceiver 413 from/to circuit STM-1 #3B reception/transmission signal, optical transceiver 414 from/to circuit STM-1 #4B reception/transmission signal.
Except being used to the APS structure with transmission process plate redundancy, transmission process plate of the present invention also can be used for not being with the APS structure of transmission process plate redundancy.
Fig. 6 is not with the APS structural representation of transmission process plate redundancy under the STM-1 pattern.Transmission process plate 440 shown in Fig. 6.Circuit STM-1 #1B, STM-1 #2B are respectively the redundant circuits of circuit STM-1 #1A, STM-1 #2A.There is not redundant transmission process plate among Fig. 6.
Label 419,420 expression physical layer interfaces all are connected with gigabit Ethernet MAC module in the module 406.Each physical layer interface is connected with the Gigabit Ethernet port of transmission process plate.
Certainly, on transmission process plate 440, also has control unit.APS switch mentioned above is controlled by the APS controller on the transmission process plate 440.
Structure shown in Figure 6 under normal circumstances is responsible for two STM-1 circuits.Suppose that circuit STM-1 #1A and STM-1 #2A are the main circuits of using.Then, receive the STM-1 signal, deliver to the 1st port in SDH VC4 framer 405 left sides by optical transceiver 401 for STM-1 #1A circuit (the main circuit of using).SDH VC4 framer 405 extracts the VC4 signal from the STM-1 signal, deliver to module 406.About the operation after operation within the module 406 and the module 406, with reference to the explanation of Fig. 2 and Fig. 3.The signal that module 406 receives from physical layer interface 419,420, be converted to the VC4 signal through module 406, under the effect of APS switch, be input to the 1st and the 2nd port on SDH VC4 framer 405 right sides, and then being input to optical transceiver 401 and 402, via line STM-1 #1A (the main circuit of using), STM-1 #1B (extension wire) send then.
In like manner, for STM-1 #2A circuit, optical transceiver 403 is from circuit STM-1 #2A received signal; And optical transceiver 403 and 404 sends signal simultaneously to circuit STM-1 #2A (the main circuit of using) and STM-1 #2B (extension wire).
When a circuit in a pair of APS circuit (as STM-1 #1A, STM-1 #1B) breaks down; APS controller on the transmission process plate can directly obtain operation APS from SDH VC4 framer 405 and select all required information; as move the required K1/K2 byte of MSP (multiplex section protection) agreement; LOS (dropout), SF (Signal Fail), SD (Signal Degrade), OOF (OOF) or the like carry out simple and effectively APS operation then.
The APS structure under supporting the STM-1 pattern, transmission process plate of the present invention is also supported the APS structure under the STM-4 pattern.
Fig. 7 is the APS structural representation of band transmission process plate redundancy under the STM-4 pattern.Two blocks of transmission process plates 740 shown in Fig. 7 and 750.Circuit STM-4 #1B is the redundant circuit of circuit STM-4 #1A.Transmission process plate 450 is redundant cards of transmission process plate 440.
Label 719,720 expression physical layer interfaces all are connected with gigabit Ethernet MAC module in the module 705.Label 729,730 expression physical layer interfaces all are connected with gigabit Ethernet MAC module in the module 706.Each physical layer interface is connected with the Gigabit Ethernet port of transmission process plate.
Certainly, on transmission process plate 740 and 750, also has separately control unit.APS switch mentioned above is controlled by the control unit on each transmission process plate 740 and 750.
In structure shown in Figure 7, cross-linked in order to carry out, need 2 differential lines.A kind of easy method is to utilize the upgrading channel interface that sets in advance in the previously described AdvancedTCA phase case backboard to realize this cross-linked.
For STM-4 #1A circuit (the main circuit of using), receive the STM-4 signal by optical transceiver 701, deliver to SDH VC4 framer 703.SDH VC4 framer 703 extracts the VC4 signal from the STM-4 signal, deliver to module 705.About the operation after operation within the module 705 and the module 705, with reference to the explanation of Fig. 2 and Fig. 3.The signal that module 705 receives from physical layer interface 719,720, be converted to the VC4 signal through module 705, deliver to SDH VC4 framer 703, and then under the effect of APS switch, being input to optical transceiver 701 and 702, via line STM-4#1A (the main circuit of using), STM-4 #1B (extension wire) send then.Like this, relevant with STM-4 #1B circuit with a pair of APS circuit STM-4 #1A circuit framer is positioned on the same block of transmission process plate on 740.
If one the STM-4 line failure is then led with the APS controller on the transmission process plate 740 and selected by moving APS with standby transmission process plate 750 exchange messages, use another STM-4 circuit.If a transmission process plate breaks down, another piece transmission process plate can be reconfigured for " no APS structure ", and use separately.Be configured to " no APS structure " and the transmission process plate that uses separately and shown in Figure 5 similar, main difference be the transmission process plate only from/to a circuit (STM-4 #1A or STM-4 #1B) reception/transmission STM-4 signal, have only an optical transceiver (701 or 702) on the transmission process plate.
Though described embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art can make various distortion or modification within the scope of the appended claims in this area.
Claims (11)
1. transmission process plate is characterized in that comprising:
At least one optical transceiver is used for receiving the STM frame and sending the STM frame to the STM circuit from the STM circuit;
At least one VC4 framer is connected with described at least one optical transceiver, is used to provide the conversion between STM frame and the VC4 stream;
At least one VC12 mapper/framer is connected with described at least one VC4 framer, is used to provide the conversion between VC4 stream and the VC12 stream;
A sub-card slot, be used to receive first subcard or second subcard, being connected between described first subcard or described second subcard and described at least one VC12 mapper/framer is provided, described first subcard provides the conversion between VC12 stream and the atm cell stream, and described second subcard provides the conversion between VC12 stream and the IP stream of packets;
A field programmable gate array is connected with described at least one VC4 framer, is used to provide VC4 the Transmission Convergence of stream, and is connected with described subcard slot, and then is connected with described first subcard or described second subcard that receive in the described subcard slot;
A network processing unit is connected with described field programmable gate array, is used to realize the ATM Adaptation Layer termination or realizes the IP termination;
An ethernet mac module is connected with described network processing unit, is used to solve shared medium access collision; And
A physical layer interface is used for described ethernet mac module is connected to outside Ethernet power board.
2. according to the transmission process plate of claim 1, it is characterized in that described at least one optical transceiver is used to receive STM-1 or STM-4 signal or is used to send STM-1 or the STM-4 signal, and described at least one VC4 framer and described STM-1 or STM-4 phase adjust signal.
3. according to the transmission process plate of claim 2, it is characterized in that the interface between described field programmable gate array and the described subcard slot is the Any-PHY interface.
4. according to the transmission process plate of claim 3, it is characterized in that the interface between described field programmable gate array and the described network processing unit is POS-PHY the 3rd layer interface.
5. according to the transmission process plate of claim 2, it is characterized in that described first subcard comprises at least one IMA module, the conversion between VC12 stream and the atm cell stream is provided.
6. according to the transmission process plate of claim 2, it is characterized in that described second subcard comprises at least one HDLC module, the conversion between VC12 stream and the IP stream of packets is provided.
7. according to the transmission process plate of claim 1, it is characterized in that described STM circuit is at least one in the circuit, the circuit between circuit, radio network controller and the node-b between two radio network controllers between radio network controller and the core net.
8. according to the transmission process plate of claim 1, it is characterized in that also comprising a control unit, be connected with described network processing unit, be used for processing messages and signaling, and use as Automatic Protection Switching Control by an internal bus.
9. the automatic-protecting switching device of two transmission process plates is characterized in that comprising:
An APS switch;
First block of transmission process plate and second block of transmission process plate, each piece transmission process plate comprises:
First optical transceiver is used for receiving the STM frame and sending the STM frame to article one STM circuit from article one STM circuit;
Second optical transceiver is used for receiving the STM frame and sending the STM frame to second STM circuit from second STM circuit;
The one VC4 framer is used to provide the conversion between STM frame and the VC4 stream;
The 2nd VC4 framer is used to provide the conversion between STM frame and the VC4 stream;
The one VC12 mapper/framer is connected with a described VC4 framer under the control of described APS switch or is connected with described the 2nd VC4 framer, is used to provide the conversion between VC4 stream and the VC12 stream;
A sub-card slot, be used to receive first subcard or second subcard, being connected between described first subcard or described second subcard and the described VC12 mapper/framer is provided, described first subcard provides the conversion between VC12 stream and the atm cell stream, and described second subcard provides the conversion between VC12 stream and the IP stream of packets;
A field programmable gate array is used to provide VC4 the Transmission Convergence of stream, and is connected with described subcard slot, and then is connected with described first subcard or described second subcard that receive in the described subcard slot;
A network processing unit is connected with described field programmable gate array, is used to realize the ATM Adaptation Layer termination or realizes the IP termination;
An ethernet mac module is connected with described network processing unit, is used to solve shared medium access collision; And
A physical layer interface is used for described ethernet mac module is connected to outside Ethernet power board;
The feature of described automatic-protecting switching device also is:
First optical transceiver of described first block of transmission process plate is connected with a VC4 framer of described first block of transmission process plate;
First optical transceiver of described second block of transmission process plate is connected with the 2nd VC4 framer of described first block of transmission process plate;
Under the control of described APS switch; the one VC12 mapper/framer of described first block of transmission process plate receives VC4 stream from a VC4 framer or the 2nd VC4 framer of described first block of transmission process plate, and sends VC4 stream to a VC4 framer and the 2nd VC4 framer.
10. the automatic-protecting switching device of two transmission process plates is characterized in that comprising:
An APS switch;
First block of transmission process plate and second block of transmission process plate, each piece transmission process plate comprises:
Optical transceiver is used for receiving the STM frame and sending the STM frame to a STM circuit from a STM circuit;
The VC4 framer is used to provide the conversion between STM frame and the VC4 stream;
VC12 mapper/framer is connected with described VC4 framer, is used to provide the conversion between VC4 stream and the VC12 stream;
A sub-card slot, be used to receive first subcard or second subcard, being connected between described first subcard or described second subcard and the described VC12 mapper/framer is provided, described first subcard provides the conversion between VC12 stream and the atm cell stream, and described second subcard provides the conversion between VC12 stream and the IP stream of packets;
A field programmable gate array is used to provide VC4 the Transmission Convergence of stream, and is connected with described subcard slot, and then is connected with described first subcard or described second subcard that receive in the described subcard slot;
A network processing unit is connected with described field programmable gate array, is used to realize the ATM Adaptation Layer termination or realizes the IP termination;
An ethernet mac module is connected with described network processing unit, is used to solve shared medium access collision; And
A physical layer interface is used for described ethernet mac module is connected to outside Ethernet power board;
The feature of described automatic-protecting switching device also is:
Under the control of described APS switch; the VC4 framer of described first block of transmission process plate receives the STM frame from the optical transceiver of described first block of transmission process plate or the optical transceiver of second block of transmission process plate, and sends the STM frame to the optical transceiver of described first block of transmission process plate and the optical transceiver of second block of transmission process plate.
11. the automatic-protecting switching device of a single transport disposable plates is characterized in that comprising:
An APS switch;
First optical transceiver is used for receiving the STM frame and sending the STM frame to article one STM circuit from article one STM circuit;
Second optical transceiver is used for receiving the STM frame and sending the STM frame to second STM circuit from second STM circuit;
The one VC4 framer is used to provide the conversion between STM frame and the VC4 stream;
The 2nd VC4 framer is used to provide the conversion between STM frame and the VC4 stream;
The one VC12 mapper/framer is connected with a described VC4 framer under the control of described APS switch or is connected with described the 2nd VC4 framer, is used to provide the conversion between VC4 stream and the VC12 stream;
A sub-card slot, be used to receive first subcard or second subcard, being connected between described first subcard or described second subcard and the described VC12 mapper/framer is provided, described first subcard provides the conversion between VC12 stream and the atm cell stream, and described second subcard provides the conversion between VC12 stream and the IP stream of packets;
A field programmable gate array is used to provide VC4 the Transmission Convergence of stream, and is connected with described subcard slot, and then is connected with described first subcard or described second subcard that receive in the described subcard slot;
A network processing unit is connected with described field programmable gate array, is used to realize the ATM Adaptation Layer termination or realizes the IP termination;
An ethernet mac module is connected with described network processing unit, is used to solve shared medium access collision; And
A physical layer interface is used for described ethernet mac module is connected to outside Ethernet power board;
The feature of described automatic-protecting switching device also is:
Described first optical transceiver is connected with a described VC4 framer;
Described second optical transceiver is connected with described the 2nd VC4 framer;
Under the control of described APS switch, a described VC12 mapper/framer receives VC4 stream from a described VC4 framer or the 2nd VC4 framer, and sends VC4 stream to a described VC4 framer and described the 2nd VC4 framer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200310122605XA CN100542073C (en) | 2003-12-22 | 2003-12-22 | Transmission process plate and automatic-protecting switching device in the radio network controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200310122605XA CN100542073C (en) | 2003-12-22 | 2003-12-22 | Transmission process plate and automatic-protecting switching device in the radio network controller |
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| Publication Number | Publication Date |
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| CN1633045A CN1633045A (en) | 2005-06-29 |
| CN100542073C true CN100542073C (en) | 2009-09-16 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20080019264A1 (en) * | 2006-07-20 | 2008-01-24 | Alcatel | System and method for maintaining state synchronization in redundant IMA group protection switching |
| CN202150855U (en) * | 2009-06-18 | 2012-02-22 | 深圳粤和通科技有限公司 | SONET/SDH (Synchronous Optical Network/ Synchronous Digital Hierarchy) interface device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1213922C (en) * | 1999-11-19 | 2005-08-10 | 山福德·雷德蒙德 | Reclosable dispenser Package, reclosable outlet forming structure and method and apparatus for making same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1213922C (en) * | 1999-11-19 | 2005-08-10 | 山福德·雷德蒙德 | Reclosable dispenser Package, reclosable outlet forming structure and method and apparatus for making same |
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