CN1464645A - Method for positioning up branch signal multi-frame and pointer - Google Patents
Method for positioning up branch signal multi-frame and pointer Download PDFInfo
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- CN1464645A CN1464645A CN02111985A CN02111985A CN1464645A CN 1464645 A CN1464645 A CN 1464645A CN 02111985 A CN02111985 A CN 02111985A CN 02111985 A CN02111985 A CN 02111985A CN 1464645 A CN1464645 A CN 1464645A
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Abstract
A upper branch line signal multiframe and pointer positioning method comprising, delaying the output data of the cross-interaction matrix in relative to the input data for the length of one frame, determining the position of H4 byte of the multiframe structure and the position of TU pointer V1, V2, V3 and V4 according to the input frame heading, operation clock and SDH frame structure, modifying the value of H4, V1 and V2 in the data stream which includes, modifying the multiframe, modifying the position of the TU pointer and its value, modifying the corresponding data or information in the data stream to make the multiframe of the input signal in the time slot cross-interaction matrix consistent to the AU pointer.
Description
Technical field:
The present invention relates to the optical synchronization digital transmission system in the communication field, relate in particular to the location of the multi-frame and tributary unit group (Tributary Unit Group the is called for short TU) pointer of signal in the light synchronizing digital transmission equipment.
Background technology:
In the phototiming transmission equipment, the intersection of signal allotment part is very important, and the height of signal allotment ability is mainly by the wherein size decision of cross matrix.Wherein, if this equipment relate to PDH (Pseudo-synchronous Digital Hierarchy) (Plesiochronous Digital Hierarchy, be called for short PDH) signal about, then the cross section of signal just must comprise full intersection cross-interaction matrix of time division.
In the design of full intersection cross-interaction matrix of time division, require every group of signal that enters cross-interaction matrix of time division must satisfy two following conditions:
(a) signal that enters cross-interaction matrix of time division must have identical administrative unit groups (Administrative Unit Group is called for short AU) pointer, does not have the pointer adjustment of AU; And the fixed-site of frame head first byte behind the first row section overhead, only in this way, the intersection that could guarantee each TU signal is intersecting by row of standard.
(b) all signals that enter cross-interaction matrix of time division must have identical multi-frame position, could guarantee that like this signal that different directions enters can correctly intersect entirely.
Usually, before one group of signal enters cross-interaction matrix of time division, the following location of unloading with multi-frame that carry out the AU pointer earlier, the frame head of back, location output signal is consistent with the input header signal of cross-interaction matrix of time division.This mode is more suitable under the situation that input signal is imported from light mouth direction, also is the mode that generally adopts for a long time.But, but there is the difference on using for signal from PDH branch road direction input cross matrix.
Because down the signal of PDH branch road unloaded location with multi-frame through one-level AU pointer following before entering cross matrix, and become the signal of pointer locking.Synthetic in order to carry out branch road, the signal of last branch road should have identical AU pointer state with the signal of following branch road, that is: the signal of going up branch road also is the signal of AU pointer locking, has just delayed several clock cycle on phase place.Processing for this upward tributary signal enters cross-interaction matrix of time division has two kinds of traditional methods for designing.
First method: the signal of going up branch road carried out the AU pointer again before entering cross matrix following location of unloading with multi-frame.This method signal can occur through unloading first-in first-out (First-In First-Out under the two-stage AU pointer in the application of reality, abbreviation FIF0) situation, cause at present some is used, the aborted clock can appear and after, the situation that this FIF0 dysfunction can't be recovered.
Second method: will descend branch road after the time of 4 frames of delaying time again on the phase place, to send into cross matrix again and intersect from the signal of cross matrix output.The foundation of this method is: in the synchronous digital hierarchy frame structure of (Synchronous Digital Hierarchy is called for short SDH), four frame signals are formed a complete multi-frame; If so enter the signal of time slot cross matrix four frames of on phase place, just in time being separated by, just be in identical multi-frame position, can carry out normal time slot and intersect entirely.Because the output signal and the time-delay between the input signal of time slot cross chips itself have 275 19M clock cycle, if the signal exported from cross matrix of branch road 9445 (2430X4-275) individual 19M clock cycle just be equivalent to the delay time length of 4 frames of on phase place, delaying time again down.But it is too big to carry out so long time-delay spent logic in programmable logic array (FPGA) fast, with regard to the cost performance of present fpga chip and improper.
Summary of the invention:
Main purpose of the present invention provides a kind of method that multi-frame and the pointer of input signal located in the time slot cross matrix is used, make the multi-frame of input signal in the time slot cross matrix consistent by corresponding data of modification or information in data flow, avoid occurring in actual applications the situation that two-stage specific function FIF0 series connection is used with the AU pointer.
Another object of the present invention provide a kind of in the time slot cross matrix is used the method for multi-frame and the pointer location of input signal, only use less logic and just can finish above-mentioned function, the reduction logic expends.
The object of the present invention is achieved like this:
1, at first will be from the be separated by length of a frame of time-delay of the dateout of cross matrix and input data; Promptly be equivalent to enter cross matrix signal lag sent into the inlet of cross matrix after one frame again, make the position consistency of this signal AU pointer on phase place, and a frame after the position mistake of multi-frame.
2,, calculate the position of the position of H4 byte of decision multi-frame structure and TU pointer V1, V2, V3, V4 according to the definition of frame structure of input frame head, work clock and SDH.
3, according to following rule H4 in the data flow and V1, V2 numerical value are changed again, put forward former frame.Wherein, described modification comprises: to the change of multi-frame, and the modification of the modification of TU pointer position and TU pointer value;
When multi-frame is made amendment:
With H4 in the former data flow is that 00 position writes 01, is that 01 position writes 10 with H4, is that 10 position writes 11 with H4, is that 11 position writes 00 with H4.
When the TU pointer position is made amendment:
Former frame is put forward in the position of TU pointer.The position that is about to former V1 changes V2 into, changes the position of former V2 into V3, changes the position of former V3 into V4, changes the position of former V4 into V1.Because data net load itself is position change not, and the numerical value of V1, V2 is being indicated the position of data net load.So the position change of V1, V2 means the numerical value of TU pointer and also changes thereupon.
When the TU pointer value is revised:
If the configuration of TU11 is 104 because the length of a TU11 is the length of 26, one TU11 multi-frames.On handling, the numerical value of V1, V2 can be read, pointer value is added write new position after 26 again, if write again after amended pointer value more than or equal to 104, then subtracts 104 with pointer value;
If the configuration of TU12 is 140 because the length of a TU12 is the length of 35, one TU12 multi-frames.On handling, the numerical value of V1, V2 can be read, pointer value is added write new position after 35 again, if write again after amended pointer value more than or equal to 140, then subtracts 140 with pointer value.
Because last tributary signal is the pointer locking signal, does not have the pointer adjustment, V3, V4 do not do consideration.
The present invention has general significance in the design of the cross-interaction matrix of time division of SDH is used; Make the multi-frame of input signal in the time slot cross matrix consistent by corresponding data of modification or information in data flow, avoided occurring in actual applications the situation that two-stage specific function FIFO series connection is used with the AU pointer; Successfully solved when the signal of cross-interaction matrix of time division output re-enters same cross matrix the problem that multi-frame and AU pointer are reorientated.In addition, the present invention can only use less logic just can finish above-mentioned function, reduces logic and expends.
Description of drawings:
Fig. 1 is a flow chart of the present invention.
Fig. 2 is the SDH multi-frame structure of not time-delay and the sequential schematic diagram of the SDH multi-frame structure of time-delay one frame.
Fig. 3 is for adopting the time slot cross matrix functional module schematic diagram of multi-frame and TU pointer modified.
Embodiment:
The present invention is described in further detail below in conjunction with accompanying drawing and specific embodiment.
As shown in Figure 1, method of the present invention comprises following step at least:
Step 1: with the dateout of cross matrix with respect to the delay time length of a frame of input data;
Step 2: the position of calculating the position of decision multi-frame structure H4 byte and TU pointer V1, V2, V3, V4 according to the frame structure of input frame head, work clock and SDH;
Step 3: the numerical value of H4 and V1, V2 in the modification data flow, promptly put forward former frame, comprising: revise multi-frame, revise TU pointer position and numerical value.
As shown in Figure 2, delay time signal multi-frame behind the frame and TU pointer all with time-delay not before the signal mistake after a frame.Therefore, in order to have identical multi-frame position, just the multi-frame value of H4 must be revised as with time-delay is before not identical with time-delay signal before.Promptly must be that 00 position is rewritten as 01 with the H4 value, and and the like.
Because the value of H4 is determining the position of TU pointer V1, V2, V3, V4, that is: to appear at H4 be that the position change of H4 makes the position of V1, V2, V3, V4 change thereupon in 01 the frame to V1.The position of former V1 changes V2 into, and and the like.
Because the net load of VC3 and VC4 has been delayed a frame, payload position is constant, and the position change of V1, V2 just means the change of TU pointer value.
Referring to Fig. 3, from the unsteady signal of pointer of light mouth direction input,, carry out then unloading under the AU pointer and the multiframe alignment processing at first through unloading and multiframe alignment under the AU pointer, last input time slot cross matrix carries out time slot and intersects.From the signal of cross matrix output, a part outputs to optical path direction, and another part outputs to down the branch road direction.
Signal from last branch road direction input, at first entering branch road synthesis module and following tributary signal carries out branch road and synthesizes, enter the delay time processing of a frame of time delay module then, and then carry out multi-frame of the present invention and pointer and handle, after carrying out the relocation process of multi-frame and pointer, become other input signal pointers and the consistent signal of multi-frame with the time slot cross matrix, enter the time slot cross matrix again and intersect.
In sum, adopt the method for this multi-frame and the reorientation of TU pointer, can be correct finish will be from the requirement of the correct again input cross matrix of the signal of time slot cross matrix output.
It should be noted last that: above embodiment is the unrestricted technical scheme of the present invention in order to explanation only, although the present invention is had been described in detail with reference to the foregoing description, those of ordinary skill in the art is to be understood that: still can make amendment or be equal to replacement the present invention, and not breaking away from any modification or partial replacement of the spirit and scope of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (4)
1, a kind of method that goes up tributary signal multi-frame and pointer location, it is characterized in that: this method comprises following step at least:
Step 1: with the dateout of cross matrix with respect to the delay time length of a frame of input data;
Step 2: the position of calculating the position of decision multi-frame structure H4 byte and TU pointer V1, V2, V3, V4 according to the frame structure of input frame head, work clock and SDH;
Step 3: the numerical value of H4 and V1, V2 in the modification data flow, promptly put forward former frame, comprising: revise multi-frame, revise TU pointer position and numerical value.
2, the method that goes up tributary signal multi-frame and pointer location according to claim 1, it is characterized in that: the method for change multi-frame is as follows:
Step 31: with H4 in the former data flow is that 00 position changes 01 into, is that 01 position changes 10 into H4, is that 10 position changes 11 into H4, is that 11 position changes 00 into H4.
3, the method that goes up tributary signal multi-frame and pointer location according to claim 1, it is characterized in that: the method for change TU pointer position is as follows:
Step 32: change the position of former V1 into V2, change the position of former V2 into V3, change the position of former V3 into V4, change the position of former V4 into V1.
4, the method that goes up tributary signal multi-frame and pointer location according to claim 1, it is characterized in that: the method for change TU pointer value is as follows:
Step 33: the numerical value of V1, V2 is read, write new position again after pointer value being added the length value of this multi-frame configuration defined;
Step 34: when this TU pointer is TU11 when configuration, if amended pointer value writes after, then pointer value being deducted the length value 104 of this multi-frame more than or equal to the length value of whole multi-frame again; When this TU pointer is TU12 when configuration, if amended pointer value writes after, then pointer value being deducted the length value 140 of this multi-frame more than or equal to the length value of whole multi-frame again.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB021119856A CN1301599C (en) | 2002-06-04 | 2002-06-04 | Method for positioning up branch signal multi-frame and pointer |
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| CNB021119856A CN1301599C (en) | 2002-06-04 | 2002-06-04 | Method for positioning up branch signal multi-frame and pointer |
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| CN1464645A true CN1464645A (en) | 2003-12-31 |
| CN1301599C CN1301599C (en) | 2007-02-21 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1725677B (en) * | 2004-07-20 | 2010-07-14 | 中兴通讯股份有限公司 | Method of rearrangement of disordered virtual stage joint group |
| CN1905426B (en) * | 2005-07-28 | 2010-07-14 | 中兴通讯股份有限公司 | Method of light plate lower branch time slot time division optimizing configuration of SDH system |
| CN1728617B (en) * | 2004-07-29 | 2010-08-18 | 中兴通讯股份有限公司 | Method for increasing utilization ratio of cross-interaction matrix of time division |
| CN102014314A (en) * | 2010-03-05 | 2011-04-13 | 柳州市达迪通信设备有限公司 | A system suitable for AU/TU pointer generation control |
| CN1905425B (en) * | 2005-07-28 | 2011-11-30 | 中兴通讯股份有限公司 | Method of light plate-to-light plate time slot time division optimizing configaration of SDH system |
| CN102291195A (en) * | 2011-03-30 | 2011-12-21 | 中兴通讯股份有限公司 | Pointer processing method and circuit for administration unit and tributary unit |
| CN101179351B (en) * | 2006-11-07 | 2012-05-09 | 中兴通讯股份有限公司 | Dynamic allocation method for space/time division cross time slot resource of synchronous digital hierarchy equipment |
| CN101670297B (en) * | 2008-09-11 | 2012-08-29 | 中国石油化工股份有限公司 | Synthetic method of titanium silicalite material containing noble metal |
| CN105703869A (en) * | 2014-11-24 | 2016-06-22 | 中兴通讯股份有限公司 | Frame positioning method and device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103787931B (en) * | 2012-10-29 | 2016-12-21 | 中国石油化工股份有限公司 | A kind of method producing dimethyl sulfoxide |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1265424B1 (en) * | 1993-12-22 | 1996-11-22 | Alcatel Italia | METHOD AND CIRUITAL ARRANGEMENT FOR IMPLEMENTING THE FUNCTION OF HPA IN THE SDH EQUIPMENT |
| JP3425046B2 (en) * | 1996-11-29 | 2003-07-07 | 富士通株式会社 | Receive pointer processing device |
| CN1093727C (en) * | 1998-09-22 | 2002-10-30 | 华为技术有限公司 | synchronous digital sequence space division cross connection equipment |
| CN1149794C (en) * | 1999-07-27 | 2004-05-12 | 信息产业部武汉邮电科学研究院 | Interfacing apparatus and method for adapting ethernet directly to physical channel |
-
2002
- 2002-06-04 CN CNB021119856A patent/CN1301599C/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1725677B (en) * | 2004-07-20 | 2010-07-14 | 中兴通讯股份有限公司 | Method of rearrangement of disordered virtual stage joint group |
| CN1728617B (en) * | 2004-07-29 | 2010-08-18 | 中兴通讯股份有限公司 | Method for increasing utilization ratio of cross-interaction matrix of time division |
| CN1905426B (en) * | 2005-07-28 | 2010-07-14 | 中兴通讯股份有限公司 | Method of light plate lower branch time slot time division optimizing configuration of SDH system |
| CN1905425B (en) * | 2005-07-28 | 2011-11-30 | 中兴通讯股份有限公司 | Method of light plate-to-light plate time slot time division optimizing configaration of SDH system |
| CN101179351B (en) * | 2006-11-07 | 2012-05-09 | 中兴通讯股份有限公司 | Dynamic allocation method for space/time division cross time slot resource of synchronous digital hierarchy equipment |
| CN101670297B (en) * | 2008-09-11 | 2012-08-29 | 中国石油化工股份有限公司 | Synthetic method of titanium silicalite material containing noble metal |
| CN102014314A (en) * | 2010-03-05 | 2011-04-13 | 柳州市达迪通信设备有限公司 | A system suitable for AU/TU pointer generation control |
| CN102014314B (en) * | 2010-03-05 | 2013-06-19 | 柳州市达迪通信设备有限公司 | System suitable for AU/TU pointer generation control in SDH |
| CN102291195A (en) * | 2011-03-30 | 2011-12-21 | 中兴通讯股份有限公司 | Pointer processing method and circuit for administration unit and tributary unit |
| CN105703869A (en) * | 2014-11-24 | 2016-06-22 | 中兴通讯股份有限公司 | Frame positioning method and device |
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| Publication number | Publication date |
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| CN1301599C (en) | 2007-02-21 |
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Effective date of registration: 20180705 Address after: California, USA Patentee after: Global innovation polymerization limited liability company Address before: 518057 Department of law, Zhongxing building, South Science and technology road, Nanshan District hi tech Industrial Park, Shenzhen Patentee before: ZTE Corp. |
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Granted publication date: 20070221 |