CN101039157A - Microwave frame adapting apparatus and method - Google Patents
Microwave frame adapting apparatus and method Download PDFInfo
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Abstract
The invention provides a microwave frame adaptation device and method. The method consists of step S402 which is that the microwave frame which can carry lower order service without high order pointer is structured by microwave frame structure module, step S404 which is that the microwave frame which can carry lower order service without high order pointer is adapted into STM-N/STS-N frame structure by microwave adaptation module, and step S406 which is that frame location information position regeneration module regenerates the position of the frame location information by flag bit which has fixed position relation with the frame location information. By using the invention, using less microwave frame overhead can be realized, and flexible operation of upload and download business of the network can also be realized.
Description
Technical field
The present invention relates to communicator and method, relate in particular to a kind of microwave frame adapting apparatus and method.
Background technology
At present, from technological layer and network application aspect, optical fiber multiservice transport platform (Multi-Service Transport Platform, abbreviate MSTP as) very ripe, but because privatizing ownership of the land, and restriction such as topography and geomorphology, all need to use wireless mode to transmit in many places, surpass under 1 kilometer the situation than big and transmission range at bandwidth requirement, use the microwave mode transmission usually.Current, in used in the markets such as digital junction transmission network, private network (as electric power, public security, army etc.) and large enterprises' access of the base station of mobile cellular system backhaul transport, the networking of transmission network metropolitan area network, broadcasting and TV, microwave transmission all had bigger application.
Existing point-to-point (Point-to-Point, abbreviating PTP as) microwave is divided into two kinds in synchronous transmission microwave and asynchronous transmission microwave usually according to bandwidth, the asynchronous transmission microwave be meant microwave eat dishes without rice or wine capacity at 100M with interior microwave, n * E1 (n＜=16) and n * E3 multiple capacity specifications such as (n＜=2) are arranged, and the synchronous transmission microwave is often referred to the microwave of the speed of speed that the microwave bandwidth of air-interface can realize that 1 * STM-1/STS-1 is above or n * STM-1/STS-1.But owing to inherit separately in corresponding asynchronous and synchronous system, also corresponding its shortcoming of having inherited.
PDH is a kind of multiplexing system, because its multiplex mode that interleaves by bit, at each node, must separate one-level to the end to the PDH signal and just can obtain the client signal that needs, so can not be professional up and down easily.Aspect networking, can only organize simple point-to-point networking.Surveillance coverage and the managerial ability of PDH are poor.
The synchronous driving network technology has better surveillance coverage, managerial ability, network survivability and higher transmission capacity than PDH, can be arbitrarily service signal up and down, so be a kind of network technology that transmits very reliably.But because it mainly is a kind of technical system that is used to transmit the language business, overhead byte is too many, and in the microwave transmission field, requires the more business of transmission in limited bandwidth.Utilize finite bandwidth Transmission Microwave frame overhead as much as possible simultaneously, be convenient to carry out flexibly network management etc.
Therefore, in the incorporate process of PDH/SDH/SONET, need in limited bandwidth, to use overhead byte still less to transmit professional up and down apparatus and method neatly.
Summary of the invention
The object of the present invention is to provide a kind of microwave frame adapting apparatus and method, can in limited bandwidth, use still less overhead byte and can be neatly professional up and down.
This device comprises: the microwave frame constructing module is used to construct the portability low-order service not with the microwave frame of high-order pointer; The microwave frame adaptation module is used for the portability low-order service is not fitted to the STM-N/STS-N frame structure with the microwave frame of high-order pointer; And frame alligning information position regeneration module, be used for by the position of the flag bit regeneration frame alligning information of fixed position relation being arranged with frame alligning information.
Wherein, described portability low-order service with the microwave frame of high-order pointer is not: microwave frame that extracts from the SDH/SONET frame structure or the microwave frame that re-constructs.In the SDH/SONET frame structure, the position of high-order pointer is fixed.
The microwave frame adaptation module comprises: data extracting unit is used for extracting the payload and the microwave frame position indication information of the microwave frame of being constructed; First-in first-out type memory, the payload and the microwave frame position indication information that are used to store microwave frame; The flag bit generation unit is used for to having the position of fixed position relation to carry out mark with frame alligning information, generating flag bit when the payload of microwave frame and microwave frame position indication information are stored to first-in first-out type memory; And the microwave frame adaptation unit, the information that stores in the first-in first-out type memory is fitted in the STM-N/STS-N frame.
Frame alligning information position regeneration module comprises: the flag bit extraction unit is used for extracting the flag bit that is stored in first-in first-out type memory; And the frame alligning information position determination unit, be used for fixed position relation according to the flag bit that is extracted and flag bit and frame alligning information, determine the position of frame alligning information.
Frame alligning information includes but not limited to path trace byte (J1).There is the position of fixed position relation to include but not limited to Tributary unit pointer (V1) with frame alligning information.The microwave frame position indication information includes but not limited to tributary unit position indication byte (H4).When not being fitted in STM1 and other frame structure of STM1 higher level the portability low-order service with the microwave frame of high-order pointer, the degree of depth of first-in first-out type memory is 3 integral multiple, below being fitted to STM1 the level other frame structure in the time, the degree of depth of first-in first-out type memory can be arbitrary value.
This method may further comprise the steps: step S402, by microwave frame constructing module structure portability low-order service not with the microwave frame of high-order pointer; Step S404 is not fitted to the portability low-order service in the STM-N/STS-N frame structure with the microwave frame of high-order pointer by the microwave frame adaptation module; And step S406, frame alligning information position regeneration module is by having the position of the flag bit regeneration frame alligning information of fixed position relation with frame alligning information.
Wherein, described portability low-order service with the microwave frame of high-order pointer is not: microwave frame that extracts from the SDH/SONET frame structure or the microwave frame that re-constructs.In the SDH/SONET frame structure, the position of high-order pointer is fixed.
Step S404 comprises: step S404-2, extract payload and microwave frame position indication information (H4) in the microwave frame constructed by data extracting unit; Step S404-4 is stored in the payload and the microwave frame position indication information (H4) of microwave frame in the first-in first-out type memory; Step S404-6 when the payload of microwave frame and microwave frame position indication information are stored to first-in first-out type memory, pair has the position of fixed position relation to carry out mark with frame alligning information by the flag bit generation unit, generates flag bit; And step S404-8, the information that will store in the first-in first-out type memory by the microwave frame adaptation unit is fitted in the STM-N/STS-N frame.
Step S406 may further comprise the steps: step 406-2, extract the flag bit that is stored in the first-in first-out type memory by the flag bit extraction unit; And step 406-4, according to the fixed position relation of the flag bit that is extracted and flag bit and frame alligning information, the frame alligning information position determination unit is determined the position of frame alligning information.
When the time slot entanglement occurring, the frame alligning information position determination unit is reorientated the position of frame alligning information according to the fixed position relation of the flag bit that is extracted and flag bit and frame alligning information.
Wherein, frame alligning information comprises path trace byte (J1).There is the position of fixed position relation to comprise Tributary unit pointer (V1) with frame alligning information.The microwave frame position indication information comprises tributary unit position indication byte (H4).When not being fitted in STM1 and other frame structure of STM1 higher level the portability low-order service with the microwave frame of high-order pointer, the degree of depth of first-in first-out type memory is 3 integral multiple, below being fitted to STM1 the level other frame structure in the time, the degree of depth of first-in first-out type memory can be arbitrary value.
The TU microwave frame that can realize carrying the microwave business by the present invention in the SDH/SONET network element flexibly about.The PDH/SDH/SONET microwave can adopt unified hardware platform, realizes the access of multiple business type simultaneously on same platform, and lower cost is arranged in the time of can satisfying the PDH microwave capacity; simultaneously; can guarantee does not again need more exchange device when upgrading to the SDH microwave, the protection customer investment.
Description of drawings
Fig. 1 is the block diagram that illustrates according to microwave frame adapting apparatus of the present invention;
Fig. 2 is the block diagram that illustrates according to microwave frame adaptation module of the present invention;
Fig. 3 is the block diagram that illustrates according to frame alligning information of the present invention position regeneration dress;
Fig. 4 is the flow chart that illustrates according to microwave frame adaptation method of the present invention;
Fig. 5 illustrates portability low-order service according to an embodiment of the invention not with the microwave frame structure of high-order pointer;
Fig. 6 is the schematic diagram that the STM1 frame structure after sending direction according to an embodiment of the invention shines upon through low-order service is shown;
Fig. 7 illustrates the schematic diagram of receive direction low-order service rate adapted according to an embodiment of the invention to STM1 and the above frame structure of STM1 rank; And
Fig. 8 is the schematic diagram that asynchronous first-in first-out type memory according to an embodiment of the invention is shown.
Embodiment
Fig. 1 is the block diagram that illustrates according to microwave frame adapting apparatus of the present invention.As shown in Figure 1, microwave frame adapting apparatus comprises: microwave frame constructing module 102 is used to construct the portability low-order service not with the microwave frame of high-order pointer; Microwave frame adaptation module 104 is used for the portability low-order service is not fitted to the STM-N/STS-N frame structure with the microwave frame of high-order pointer; And frame alligning information position regeneration module 106, be used for by the position of the flag bit regeneration frame alligning information of fixed position relation being arranged with frame alligning information.Wherein, the portability low-order service can not be the microwave frame that extracts from the SDH/SONET frame structure with the microwave frame of high-order pointer, also can be the microwave frame that re-constructs.In the SDH/SONET frame structure, the position of high-order pointer is fixed.
Fig. 2 is the block diagram that illustrates according to microwave frame adaptation module of the present invention.As shown in Figure 2, the microwave frame adaptation module comprises: data extracting unit 104-2 is used for extracting the payload and the microwave frame position indication information (H4) of the microwave frame of being constructed; First-in first-out type memory 104-4, the payload and the microwave frame position indication information (H4) that are used to store microwave frame; Flag bit generation unit 104-6 is used for to having the position of fixed position relation to carry out mark with frame alligning information, generating flag bit when the payload of microwave frame and microwave frame position indication information are stored to first-in first-out type memory; And microwave frame adaptation unit 104-8, the information that stores in the first-in first-out type memory is fitted in the STM-N/STS-N frame.
Fig. 3 is the block diagram that illustrates according to frame alligning information of the present invention position regeneration dress.As shown in Figure 3, frame alligning information position regeneration module 106 comprises: flag bit extraction unit 106-2 is used for extracting the flag bit that is stored in first-in first-out type memory; And frame alligning information position determination unit 106-4, be used for fixed position relation according to the flag bit that is extracted and flag bit and frame alligning information, determine the position of frame alligning information.
When the time slot entanglement occurring, the frame alligning information position determination unit is reorientated the position of frame alligning information according to the fixed position relation of the flag bit that is extracted and flag bit and frame alligning information.
Wherein, frame alligning information comprises path trace byte (J1).There is the position of fixed position relation to comprise Tributary unit pointer (V1) with frame alligning information.The microwave frame position indication information comprises tributary unit position indication byte (H4).When not being fitted in STM1 and other frame structure of STM1 higher level the portability low-order service with the microwave frame of high-order pointer, the degree of depth of first-in first-out type memory is 3 integral multiple, below being fitted to STM1 the level other frame structure in the time, the degree of depth of first-in first-out type memory can be arbitrary value.
Fig. 4 is the flow chart that illustrates according to microwave frame adaptation method of the present invention.As shown in Figure 4, this method may further comprise the steps: step S402, by microwave frame constructing module structure portability low-order service not with the microwave frame of high-order pointer; Step S404 is not fitted to the portability low-order service in the STM-N/STS-N frame structure with the microwave frame of high-order pointer by the microwave frame adaptation module; And step S406, frame alligning information position regeneration module is by having the position of the flag bit regeneration frame alligning information of fixed position relation with frame alligning information.Wherein, the portability low-order service can not be the microwave frame that extracts from the SDH/SONET frame structure with the microwave frame of high-order pointer, also can be the microwave frame that re-constructs.
Step S404 comprises: step S404-2, extract payload and microwave frame position indication information (H4) in the microwave frame constructed by data extracting unit; Step S404-4 is stored in the payload and the microwave frame position indication information (H4) of microwave frame in the first-in first-out type memory; Step S404-6 when the payload of microwave frame and microwave frame position indication information are stored to first-in first-out type memory, pair has the position of fixed position relation to carry out mark with frame alligning information by the flag bit generation unit, generates flag bit; And step S404-8, the information that will store in the first-in first-out type memory by the microwave frame adaptation module is fitted in the STM-N/STS-N frame.
Step S406 may further comprise the steps: step 406-2, extract the flag bit that is stored in the first-in first-out type memory by the flag bit extraction unit; And step 406-4, according to the fixed position relation of the flag bit that is extracted and flag bit and frame alligning information, the frame alligning information position determination unit is determined the position of frame alligning information.
When the time slot entanglement occurring, the frame alligning information position determination unit is reorientated the position of frame alligning information according to the fixed position relation of the flag bit that is extracted and flag bit and frame alligning information.
Wherein, frame alligning information comprises path trace byte (J1).There is the position of fixed position relation to comprise Tributary unit pointer (V1) with frame alligning information.The microwave frame position indication information comprises tributary unit position indication byte (H4).When not being fitted in STM1 and other frame structure of STM1 higher level the portability low-order service with the microwave frame of high-order pointer, the degree of depth of first-in first-out type memory is 3 integral multiple, below being fitted to STM1 the level other frame structure in the time, the degree of depth of first-in first-out type memory can be arbitrary value.
Fig. 5 is that portability low-order service according to an embodiment of the invention is not with the microwave frame structure of high-order pointer.
PDH/SDH/SONET integrated digital microwave device adopts based on being that to make up the PDH microwave capacity be that the portability low-order service of n * E1 (n＜=63)/n * DS1 (n＜=84)/n * E3/DS3 (n＜=3) is not with the microwave frame structure (hereinafter to be referred as the TU microwave frame) of high-order pointer to basic granules with TU (tributary unit).This microwave frame structure is in order to pare down expenses, improve bandwidth availability ratio, utilize pointer value when the TU low-order service is multiplexing to come up the characteristics of fixed position (such as, utilize that pointer value all was fixed on 522 positions when the TU low-order service is multiplexing to come up), high-order pointer in the frame structure is removed, only keep several expenses commonly used except that frame head.As shown in Figure 5, the TU microwave frame comprises expense and payload, and its expense structure such as following table comprise: frame head, DCC (Data Communications Channel), microwave expense (H4+LinkID+ATPC+MVRDI+J0), EOW, data port.
TU microwave frame overhead byte
| Frame head | Frame head | EOW | MVOH | Data port | DCC |
| Byte number | 2 | 1 | 1 | 1 | 1 |
Wherein, in order to solve the contradiction of many expenses and few byte, the microwave expense of enriching that Link ID (16Bits), ATPC (4Bits), MVREI (1Bit), MVRDI (1Bit), MVB1 (2Bit), MVJ0 (8Bits) etc. is amounted to 32Bits is finished by MVH4 multiframe transmission in the MVOH of 1Byte expense of 4bit, and is as shown in the table:
| The microwave expense | MVOH | ||||||||
| H4 | bit0-3 | 0000 | 0001 | 0010 | 0011 | … | 1101 | 1110 | 1111 |
| ATPC | bit4 | bit0 | bit1 | bit2 | bit3 | … | bit1 | bit2 | bit3 |
| LinkID | bit5 | bit0 | bit1 | bit2 | bit3 | … | bit13 | bit14 | bit15 |
| MVV5 | bit6 | MVB1 | MVB1 | MVREI | MVRDI | … | | MVR EI | MVR DI |
| J0 | bit7 | bit0 | bit1 | bit2 | bit3 | … | bit5 | bit6 | bit7 |
For example: Link ID takies 1Bit (Bit5), with the MVH4 combination, has transmitted the Link id information that amounts to 16Bit by 16 frames.Like this, Link ID (16Bits) accounts for total MVOH (32Bits) information 50% that needs transmission that amounts to, MVOH only takies 8Bits (MVH4 takies 4Bbits) and finishes in every frame transmission, after this Link id information that need take the 16Bits transmission adopts this method to transmit, only be equivalent to and finish transmission, improved efficient greatly, effectively saved bandwidth resources with 4Bits, abundanter bandwidth can be used to improve the code correction ability, improve indexs such as receiving sensitivity.
Integrated for realizing the PDH/SDH/SONET microwave, need be with the transmission and separate mapping in the SDH/SONET of this TU microwave frame rate adapted.In separating mapping process, owing to be the synchronised clock territory, relatively simple.For the rate adapted process, owing to be different clock-domains, float at SDH/SONET in the position of its J1 of mapping back, but because this microwave frame belongs to the offbeat form of not being with pointer value, and its asynchronous FIFO processing procedure can not adopt the method that asynchronous FIFO is handled in the original SDH/SONET system.Equally, in order to realize professional up and down arbitrarily and ADM function, can not adopt the asynchronous speed adaptation method of PDH.
Therefore, for the requirement that guarantees that the PDH/SDH/SONET microwave is integrated and satisfy bandwidth availability ratio, must need a kind of this new TU microwave frame rate adapted to be transmitted in SDH/SONET, requirement simultaneously can be professional up and down flexibly.
The rate adaption method of traditional SDH/SONET is: the STM-N/STS-N frame structure signal in line side carries out rate adapted by asynchronous FIFO, and signal is regenerated again and transmitted in this locality after new STM-N/STS-N frame structure signal is formed in the back.Professional payload does not wherein change, and clock switches to local clock from line clock.Section overhead is terminated, and, needs processing section expense herein that is.
The rate adaption method of traditional SDH/SONET because at be specific SDH/SONET frame structure, the change in location of the J1 of pointed is very regular during adjustment, always change three positions (J1 is always in the position that with respect to local header signal distance is 3 multiple) at every turn, or always change a position at every turn.Therefore the header signal that this locality that present rate adaption method location J1 always adopts is sent here is directly located as benchmark.Rate adapted for traditional SDH/SONET is succinctly effective, but this method can not be handled the situation that J1 floats with respect to the irregular variation of local header signal distance, therefore also can't realize carrying low-order service and not be fitted among the SDH with the microwave frame of pointer and transmit.
Though the PDH asynchronous speed that traditional PDH self asynchronous speed is adaptive and traditional is fitted to the SDH method and can realizes carrying low-order service and do not transmit in SDH with the microwave frame rate adapted of pointer, but so just lost the advantage of SDH/SONET transmission, can't realize professional up and down arbitrarily and ADM function.
As can be seen from the above, traditional SDH rate adaption method still is the requirement that traditional PDH rate adaption method all can't satisfy present PDH/SDH/SONET microwave integrated apparatus, so, need to how the portability low-order service not being transmitted solution of proposition with the TU microwave frame rate adapted of high-order pointer in SDH/SONET.
Therefore; proposed a kind of special at the method that is not fitted to the STM-N/STS-N frame structure with the microwave frame asynchronous speed of pointer; make and realize that the PDH/SDH/SONET microwave can adopt unified hardware platform; on same platform, realize the access of multiple business type simultaneously; and lower cost is arranged can satisfy the PDH microwave capacity time, simultaneously, can guarantee again when upgrading to the SDH/SONET microwave; do not need more exchange device, the protection customer investment.
The defined TU microwave frame of PDH/SDH/SONET integrated digital microwave equipment structure is as shown in Figure 5: this frame structure adopts from left to right, transmission method from top to bottom.Wherein, a preceding m byte is an overhead byte, and when loading TU12 or VT2, payload section is N * 4 row, and when loading TU11 or VT15, payload section is N * 3 row, and a preceding m byte is frame head and other expenses, can realize the microwave business is handled end to end.The size of TU12, VT2 microwave frame is m+n * 4 * 9 byte, the size of TU11, VT15 microwave frame is m+n * 3 * 9 byte, and when loading TU3, payload section is N * 86 row, the microwave frame size of TU3 is m+n * 86 * 9 byte, can join flexibly according to the requirement of microwave bandwidth.
The principle that the portability low-order service can not transmit in SDH/SONET with the TU microwave frame of high-order pointer be because:
With SDH is the example explanation: because at sending direction, low order is fitted in the process of high-order, its high-order pointer snaps to 522 positions after the low-order service process branch road chip adaptation processing, and the relative J1 in V1 position of low-order service TU fixes, therefore when forming the TU microwave frame, do not need pointer byte, just can think for 522 (as shown in Figure 6) at receive direction.Fig. 6 illustrates the STM1 frame structure schematic diagram after sending direction shines upon through low-order service.
At receive direction, because line clock and local clock speed is different, need asynchronous speed to be fitted in the VC4/SPE payload of local STM-N/STS-N frame structure, and then be mapped in the SDH/SONET system and transmit.VC4 (VC is a virtual container) can carry 63 TU12, therefore, can transmit the TU microwave frame that maximum 63 TU12 form.The SPE structure can be carried 21 VT2, can transmit the TU microwave frame that maximum 21 VT2 form.Simultaneously, owing to the inconsistent reason of asynchronous speed, again regeneration after loading the VC4/SPE payload of TU microwave frame payload, its position changes in the STM-N/STS-N frame structure, float in the position of TU microwave frame payload in the STM-N/STS-N frame structure that causes fixing with high-order J1 relative position, thereby the high-order pointer that points to high-order J1 position changes, and floats in the high-order J1 position of its pointed.
Fig. 7 is the example explanation with SDH, and the schematic diagram of receive direction low-order service rate adapted to STM1 and the above frame structure of STM1 rank is shown.The as can be seen from Figure 7 several characteristics of STM1 frame structure:
1, float in the position of J1, lists but the position of J1 always is positioned at 3 integral multiple.
When 2, low-order service is mapped on the STM1, float in the position of J1, and its position is by changing the pointer value location.
3, when rate adapted takes place to adjust, once always adjust 3 bytes.3 byte positions of corresponding adjustment, the position of J1.
4, H4 fixes with relative J1 position, first V1 position.
When not being fitted to STM1 and STM1 thus with the microwave frame asynchronous speed of high-order pointer, the most basic must satisfy top four features could realize PDH/SDH/SONET integrated and professional arbitrarily about.And because 1～n low-order service of this TU microwave frame portability, therefore, when n was not 3 integral multiple, though each STM1 adjustment is three bytes, for the business of reality, the byte number of adjustment may be 0,1,2,3 byte.Read by conventional method, its J1 position of reading just may not be the multiple column position 3, thereby leads to errors.
Therefore, need a kind of can self adaptation produce the solution of J1 and with the TU microwave frame to the adaptive solution of the asynchronous speed of STM-N/STS-N frame structure.
Can adopt following from the portability low-order service not with the TU microwave frame of high-order pointer asynchronous speed adaptation method to the STM-N/STS-N frame structure, may further comprise the steps:
First step is deposited the TU payload that the TU microwave frame signal extraction that receives goes out in the asynchronous first-in first-out type memory (FIFO).The form of FIFO as shown in Figure 8, except the storage data, the information of first V1 of stores synchronized and H4.The V1 byte is carried out mark, for example, write 1 at the flag bit of first V1 correspondence, other write 0.All H4 information bits of this frame all write the H4 value of the TU microwave frame after the processing.When be fitted into be STM1 and STM1 higher level other when professional, guarantee that position that V1 writes is 3 integral multiple.
Second step extracts information and to be fitted in the STM-N/STS-N frame structure from FIFO.
Third step, fixed position relation according to first V1 and J1, by the V1 inverted orientation J1 that extracts, the position of H4, simultaneously the H4 value that extracts synchronously is treated to the H4 value corresponding with the STM1 frame of regenerating, insert the H4 value after handling in the H4 position of regeneration.And when the time slot entanglement occurring, can correct and locate regeneration J1 position again according to the position of this V1.As shown in Figure 9, in transmission, frame frequency is fixed, that is, the position of V1 and J1 occurs and circulation according to certain frequency is fixing.Suppose V1 in m position of J1 back (m is a fixed value), and a frame there be n byte (n is a fixed value), so after V1 occurring, the n-m byte behind V1 is exactly J1.
For the STM1 of SDH and the frame structure more than the STM1, need self-align and correction again.Because for the STM1 of SDH and the frame structure more than the STM1, J1 is on 3 integral multiple position for regulation, therefore, in the time of the time slot entanglement, the J1 that may be oriented by the V1 that reads out must readjust J1 on the position of 3 integral multiple just not on 3 integral multiple this moment.For STM0 and this frame structure of STS1, J1 is not listing at 3 integral multiple.
Wherein, in the process that fits within STM1 frame and the frame more than the STM1 rank, the degree of depth of asynchronous FIFO is 3 integral multiple, because when writing FIFO, what guarantee that the position of first V1 writes is 3 the capable position of integral multiple, below being fitted to STM1 the level other frame structure in the time, the degree of depth of first-in first-out type memory can be arbitrary value.
By the present invention, the TU microwave frame of realizing carrying the microwave business is about the SDH/SONET network element can be flexibly.The PDH/SDH/SONET microwave can adopt unified hardware platform, realizes the access of multiple business type simultaneously on same platform, and lower cost is arranged in the time of can satisfying the PDH microwave capacity; simultaneously; can guarantee does not again need more exchange device when upgrading to the SDH microwave, the protection customer investment.
Be the preferred embodiments of the present invention only below, be not limited to the present invention, for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (15)
1. a microwave frame adapting apparatus is characterized in that, described device comprises:
The microwave frame constructing module is used to construct the portability low-order service not with the microwave frame of high-order pointer;
The microwave frame adaptation module is used for described portability low-order service is not fitted to the STM-N/STS-N frame structure with the microwave frame of high-order pointer; And
Frame alligning information position regeneration module is used for by with frame alligning information the position of the flag bit regeneration frame alligning information of fixed position relation being arranged.
2. device according to claim 1 is characterized in that, described microwave frame adaptation module comprises:
Data extracting unit is used for extracting the payload and the microwave frame position indication information of the microwave frame of being constructed;
First-in first-out type memory, the payload and the microwave frame position indication information that are used to store microwave frame;
The flag bit generation unit is used for to having the position of fixed position relation to carry out mark with frame alligning information, generating flag bit when the payload of microwave frame and described microwave frame position indication information being stored to described first-in first-out type memory; And
The microwave frame adaptation unit is fitted to the information that stores in the described first-in first-out type memory in the STM-N/STS-N frame.
3. device according to claim 1 is characterized in that, described frame alligning information position regeneration module comprises:
The flag bit extraction unit is used for extracting the flag bit that is stored in described first-in first-out type memory; And
The frame alligning information position determination unit is used for the fixed position relation according to the flag bit that is extracted and described flag bit and frame alligning information, determines the position of frame alligning information.
4. according to each described device in the claim 1 to 3, it is characterized in that described frame alligning information comprises path trace byte (J1).
5. according to each described device in the claim 1 to 3, it is characterized in that having the position of fixed position relation to comprise Tributary unit pointer (V1) with described frame alligning information.
6. according to each described device in the claim 1 to 3, it is characterized in that described microwave frame position indication information comprises tributary unit position indication byte (H4).
7. according to each described device in the claim 1 to 3, it is characterized in that, when not being fitted in STM1 and other frame structure of STM1 higher level with the microwave frame of high-order pointer the portability low-order service, the degree of depth of described first-in first-out type memory is 3 integral multiple.
8. a microwave frame adaptation method is characterized in that, said method comprising the steps of:
Step S402, by microwave frame constructing module structure portability low-order service not with the microwave frame of high-order pointer;
Step S404 is not fitted to described portability low-order service in the STM-N/STS-N frame structure with the microwave frame of high-order pointer by the microwave frame adaptation module; And
Step S406, frame alligning information position regeneration module is by having the position of the flag bit regeneration frame alligning information of fixed position relation with frame alligning information.
9. method according to claim 8 is characterized in that, described step S404 comprises:
Step S404-2 extracts payload and microwave frame position indication information (H4) in the microwave frame constructed by data extracting unit;
Step S404-4 is stored to the payload and the microwave frame position indication information (H4) of microwave frame in the first-in first-out type memory;
Step S404-6 when the payload of microwave frame and described microwave frame position indication information being stored to described first-in first-out type memory, pair has the position of fixed position relation to carry out mark with frame alligning information by the flag bit generation unit, generates flag bit; And
Step S404-8, the information that will store in the described first-in first-out type memory by the microwave frame adaptation unit is fitted in the STM-N/STS-N frame.
10. method according to claim 8 is characterized in that step S406 may further comprise the steps:
Step 406-2 extracts the flag bit that is stored in the described first-in first-out type memory by the flag bit extraction unit; And
Step 406-4, according to the fixed position relation of the flag bit that is extracted and described flag bit and frame alligning information, the frame alligning information position determination unit is determined the position of frame alligning information.
11. method according to claim 10, it is characterized in that, when the time slot entanglement occurring, described frame alligning information position determination unit is reorientated the position of frame alligning information according to the fixed position relation of the flag bit that is extracted and described flag bit and frame alligning information.
12. each described method in 11 is characterized in that described frame alligning information comprises path trace byte (J1) according to Claim 8.
13. each described method in 11 is characterized in that according to Claim 8, has the position of fixed position relation to comprise Tributary unit pointer (V1) with described frame alligning information.
14. each described method in 11 is characterized in that according to Claim 8, described microwave frame position indication information comprises tributary unit position indication byte (H4).
15. each described method in 11 according to Claim 8, it is characterized in that, when not being fitted in STM1 and other frame structure of STM1 higher level with the microwave frame of high-order pointer the portability low-order service, the degree of depth of described first-in first-out type memory is 3 integral multiple.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610057048A CN101039157B (en) | 2006-03-13 | 2006-03-13 | Microwave frame adapting apparatus and method |
| PCT/CN2007/000705 WO2007104234A1 (en) | 2006-03-13 | 2007-03-05 | A device and method for adapting microwave frame |
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| CN200610057048A CN101039157B (en) | 2006-03-13 | 2006-03-13 | Microwave frame adapting apparatus and method |
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| CN101039157B CN101039157B (en) | 2010-05-12 |
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| WO (1) | WO2007104234A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102404065A (en) * | 2011-11-09 | 2012-04-04 | 武汉日电光通信工业有限公司 | SDH (Synchronous Digital Hierarchy) pointer processing method and circuit thereof |
| US8792461B2 (en) | 2009-08-24 | 2014-07-29 | Huawei Technologies Co., Ltd. | Method, apparatus and system for scheduling service on microwave link |
| CN111555832A (en) * | 2020-04-22 | 2020-08-18 | 中国电子科技集团公司第五十四研究所 | 1+1 hot backup dual-channel synchronization and maintenance method based on continuous frame positioning |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH04365243A (en) * | 1991-06-12 | 1992-12-17 | Mitsubishi Electric Corp | Fddi data mapping system |
| CN1159888C (en) * | 1999-07-14 | 2004-07-28 | 信息产业部武汉邮电科学研究院 | Data transmission apparatus and method for transmitting data between physical layer side device and network layer device |
| CN1315280C (en) * | 2001-05-15 | 2007-05-09 | 华为技术有限公司 | SDH pointer treatment method and circuit |
| KR100574960B1 (en) * | 2003-11-25 | 2006-05-02 | 삼성전자주식회사 | The dividing method for payload intra-frame |
| JP4365243B2 (en) * | 2004-03-15 | 2009-11-18 | Ａｓｔｉ株式会社 | Decorative parts arrangement tool |
| KR100575989B1 (en) * | 2004-04-08 | 2006-05-02 | 삼성전자주식회사 | Segmentation Transmitting Method of Asynchronous Data In Synchronous Ethernet and Data Structure Used In Segmentation Transmitting Method |
| CN1744470A (en) * | 2004-09-02 | 2006-03-08 | 华为技术有限公司 | Method and device for bearing asynchronous transmission mode business by optical network |
-
2006
- 2006-03-13 CN CN200610057048A patent/CN101039157B/en not_active Expired - Fee Related
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8792461B2 (en) | 2009-08-24 | 2014-07-29 | Huawei Technologies Co., Ltd. | Method, apparatus and system for scheduling service on microwave link |
| CN102404065A (en) * | 2011-11-09 | 2012-04-04 | 武汉日电光通信工业有限公司 | SDH (Synchronous Digital Hierarchy) pointer processing method and circuit thereof |
| CN102404065B (en) * | 2011-11-09 | 2014-02-26 | 武汉日电光通信工业有限公司 | SDH (Synchronous Digital Hierarchy) pointer processing method and circuit thereof |
| CN111555832A (en) * | 2020-04-22 | 2020-08-18 | 中国电子科技集团公司第五十四研究所 | 1+1 hot backup dual-channel synchronization and maintenance method based on continuous frame positioning |
| CN111555832B (en) * | 2020-04-22 | 2022-02-18 | 中国电子科技集团公司第五十四研究所 | 1+1 hot backup dual-channel synchronization and maintenance method based on continuous frame positioning |
Also Published As
| Publication number | Publication date |
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| CN101039157B (en) | 2010-05-12 |
| WO2007104234A1 (en) | 2007-09-20 |
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