CN101355681B - Backup method for wideband private wire conference television system channel and method for channel allocation - Google Patents
Backup method for wideband private wire conference television system channel and method for channel allocation Download PDFInfo
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- CN101355681B CN101355681B CN2007101304894A CN200710130489A CN101355681B CN 101355681 B CN101355681 B CN 101355681B CN 2007101304894 A CN2007101304894 A CN 2007101304894A CN 200710130489 A CN200710130489 A CN 200710130489A CN 101355681 B CN101355681 B CN 101355681B
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Abstract
The invention discloses a method for backing up signal channels of a wideband private line meeting television system and a method for allocating signal channels. The invention comprises the following steps that: the minimum value(S) of the speed and the allocation speed of presently available signal channels is worked out, if the S value is equal to the S' value of the present communication speed, the number(k) of presently used available signal channels are counted, and the k is an integer; if the k is less than the S, whether the main signal channel is cut is detected, if yes, all signal channels are re-allocated. Due to the application of the invention, the consistence of the communication speed and the signal channel allocation between two points is realized, the continuous communication of signaling and voice is ensured, the image can be recovered as soon as possible, and the whole process is fast and accurate, thereby greatly improving the stability of the wideband private line meeting television system.
Description
Technical field
The present invention relates to TV conference system, more specifically relate to a kind of wideband private wire conference television system channel backup method and method for channel allocation.
Background technology
In wideband private wire conference television system, the line between MCU (multipoint control unit) and the terminal is seen Fig. 1, comprises between MCU and the MCU, between MCU and the terminal, between terminal and the terminal.Needs between any two are many to the E1 private line access, are generally 1-4 carries 2M-8M to the E1 special line special line broadband video conferencing communication.There is x terminal in the supposing the system, y cascade port, with the networking of 8M bandwidth, then whole system exists 4* (x+y) to the E1 special line.Any a pair of existing problems all can cause system works undesired; If system configuration the channel backup function, generally speaking, image abnormity can appear in terminal that breaks down or MCU; Otherwise if do not have configurating channel backup and the fast function of automatic lifting, might cause then that terminal goes offline, the thorough fault of voice and image.
The technical scheme of a kind of automatically regulating speed of whole network of wideband private wire conference television system of current needs solves that terminal goes offline, the problem of the thorough fault of voice and image.
Summary of the invention
Technical problem to be solved by this invention provides a kind of wideband private wire conference television system channel backup method and method for channel allocation, at point-to-point communication, communication speed and channel configuration is consistent between realizing at 2, the communication of guaranteeing signaling and voice is not interrupted, image can recover as early as possible, whole process is quick, accurate, thereby improves the stability of wideband private wire conference television system greatly.
In order to address the above problem, the invention provides a kind of wideband private wire conference television system channel backup method, may further comprise the steps,
A, calculate the minimum value S of current available channel speed and configured rate, if the S value equates that with current communication speed S ' value then add up the current number of available channels k that is used, described k is an integer, if k less than described S, execution in step b then;
Whether b, detection main channel disconnect, if then all channels all reconfigure.
Further, said method also can comprise, among the described step a,
If described k is not less than S, represent that then the current line status that is just using in communication does not change, the channel backup configuration finishes.
Further, said method also can comprise, among the described step b, if main channel disconnects, then described all channels all reconfigure be logical channel number since 0 configuration, finish up to the logic channel configuration of S-1.
Further, said method also can comprise, among the described step b, if main channel does not disconnect, then logical channel number is since 1 configuration, finishes up to the logic channel configuration of S-1.
The present invention also provides a kind of wideband private wire conference television system channel distribution method, may further comprise the steps,
The minimum value S of step 110, the current available channel speed of calculating and configured rate makes comparisons with current communication speed S ': T=S-S '; If T=0, then execution in step 120;
Do step 130, detection main channel disconnect? if then all channels all reconfigure;
Further, said method also can comprise, in the described step 110, if following steps are then carried out in described T＞0,
Step 111, initialization i=0, i are integer;
Step 112, obtain the current available channel that is not used in i road;
Step 113, transmission logical channel number TxChn (i)=S '+i;
Step 114, put channel status for using;
Step 115, i are that step-length increases progressively with 1, if i＜T, then execution in step 112; Otherwise the raising speed configuration finishes, and carries out described step 140.
Further, said method also can comprise, in the described step 110, if following steps are then carried out in described T＜0,
Do you step 117, judge that main channel disconnects? if then all channels all reconfigure, carry out described step 140; Otherwise execution in step 118;
Step 118, all reconfigure, carry out described step 140 from the logic channel of 1～S-1.
Further, said method also can comprise, in the described step 120,
If described k is not less than S, represent that then the current line status that is just using in communication does not change, the channel backup configuration finishes.
Further, said method also can comprise, in the described step 130, if main channel does not disconnect, then logical channel number is since 1 configuration, finishes up to the logic channel configuration of S-1.
Further, said method also can comprise, in the described step 130, if main channel disconnects, then described all channels all reconfigure be logical channel number since 0 configuration, finish up to the logic channel configuration of S-1.
Compared with prior art, use the present invention, realize at 2 between communication speed and channel configuration consistent, the communication of guaranteeing signaling and voice is not interrupted, image can recover as early as possible, and whole process is quick, accurate, thereby improves the stability of wideband private wire conference television system greatly.
Description of drawings
Fig. 1 is MCU, a terminal channel backup line graph each other;
Fig. 2 is the flow chart of wideband private wire conference television system channel backup method in the specific embodiment of the invention;
Fig. 3 is a main channel backup device channel allocation flow chart in the specific embodiment of the invention;
Fig. 4 is from channel backup device channel allocation flow chart in the specific embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the invention is described further.
At first, for this patent method is described better, define several basic conceptions earlier.
Channel speed: between terminal and the MCU or the n*E1 between MCU and the MCU (n=1,2,3,4) transmission rate, the channel speed that terminal detects is consistent with the channel speed that MCU detects; Carry out channel cross-over configuration and speed affirmation by the channel backup module between two entities.
Typical networking between MCU and the MCU, between MCU and the terminal, is generally all linked to each other by 4 pairs of lines between terminal and the terminal as shown in Figure 1, and every pair of E1 wire rate is 2M, and maximum can realize the 8M communication.This moment, the whole network can only guarantee that by automatic lifting speed communication is normal.
Channel backup: many E1 circuit is formed the x+y backup, when being no more than under the situation of y to line fault, can guarantee that communication speed is that x is constant, the E1 circuit that only is to use switches to a kind of channel usage policy that x gets on to current good circuit flexibly.For example, when only needing the 4M communication, can be configured to the 2+2 backup and use; When only needing to use the 6M communication, can be configured to the 3+1 backup and use, can guarantee that communication is normal by channel backup and automatic lifting speed.
Automatic lifting speed: when the initial communication speed s of system configuration was consistent with line speed x, any a pair of line fault all needed communication speed reduction of speed immediately.
According to many frame structures, can find the E1 channel: because the particularity of wideband private wire conference television, during reduction of speed: if initial channel breaks down, must guarantee to begin to recover, number the principle that big channel begins to abandon from numbering little channel; Otherwise, if initial channel does not break down, will keep the state of initial channel, guarantee that signaling and voice are uninterrupted continuously, only dispose the principle of additional channel.
During raising speed: need keep the state of initial channel, guarantee that signaling and voice are uninterrupted continuously, only need to arrive from childhood big the recovery and the configuration additional channel, and only need to dispose additional channel to be increased.
In order to ensure channel backup and automatic lifting speed quick and precisely, 2 the division of labor must be clear and definite, the present invention has designed the flow process of active and standby configuration: when master side detects circuit and changes, initiatively start channel backup and automatic lifting speed flow process, determine the channel number of every pair of circuit; Cross the information that E1 special line TS16 passes over from the side according to main square tube and decide channel configuration.
Fig. 2 has described the flow process of wideband private wire conference television system channel backup method, may further comprise the steps,
Step 10, calculate the minimum value S of current available channel speed and configured rate, if the S value equate with current communication speed S ' value, then carry out next step;
Step 20, the current number of available channels k that is used of statistics, k is an integer, if k is not less than S, then execution in step 30; If k is less than S, then execution in step 40;
Step 30, to keep configuration constant, finishes;
If k is not less than S, illustrate that the current line status that is just using in communication does not change, without any need for configuration, the channel backup configuration finishes;
Do step 40, detection main channel disconnect? if then execution in step 50; Otherwise, execution in step 60;
If k, illustrates the current line status that is just using in communication less than S change has taken place, needs the standby circuit of configuration.
Step 50, all channels all reconfigure, and finish;
Logical channel number finishes up to the configuration of the logic channel of S-1 since 0 configuration, and the channel backup configuration finishes.
Step 60, logical channel number be since 1 configuration, finishes up to the logic channel configuration of S-1, finishes;
Because main channel carried significant datas such as signaling and voice, so main channel (logical channel number is 0) remains unchanged, all reconfigure from the logic channel of 1～S-1 and get final product, channel backup is disposed and is finished.
Fig. 3 has described main channel backup device channel allocation flow process, may further comprise the steps,
The minimum value S of step 110, the current available channel speed of calculating and configured rate compares with current communication speed S ': T=S-S ';
Channel configuration sends logical channel number TxChn (i)=S '+i.
I is that step-length increases progressively with 1, if i＜T, then execution in step 131, continues next path channels configuration.
Do you step 140, judge that main channel disconnects? if then execution in step 142; Otherwise execution in step 145;
Logical channel number finishes up to the configuration of the logic channel of S-1 since 0 configuration.
Because main channel has been carried significant datas such as signaling and voice, so main channel (logical channel number is 0) remains unchanged.
If k is not less than S, illustrate that the current line status that is just using in communication does not change, without any need for configuration, the channel backup configuration finishes;
Do step 170, detection main channel disconnect? if disconnect, then execution in step 175; Otherwise, execution in step 180;
If k, illustrates the current line status that is just using in communication less than S change has taken place, needs the standby circuit of configuration.
Logical channel number finishes up to the configuration of the logic channel of S-1 since 0 configuration.
Because main channel carried significant datas such as signaling and voice, so main channel (logical channel number is 0) remains unchanged, all reconfigure from the logic channel of 1～S-1 and get final product, channel backup is disposed and is finished execution in step 190;
The minimum value S of current available channel speed and configured rate is composed to current communication speed S ', for next line status variation configuration is prepared.
Fig. 4 has described from channel backup device channel allocation flow process, may further comprise the steps,
The receive channel RxChn (i) of the available channel that step 220, inspection i road have disposed;
Switch and configuration according to the indication of main channel backup device from the channel of channel backup device.
I is that step-length increases progressively with 1, if i＜S then continues next road and handles.
The flow process that main channel backup device is received and sent messages and handled may further comprise the steps,
Step 300, all E1 port of private line of initialization work in main channel backup device pattern; Obtain the total speed S of circuit; Variable i=0 of initialization;
Step 310, detect all E1 special line line statuss, obtain i route line state;
Step 320, judge whether i route line state has fault, if then execution in step 330; Otherwise execution in step 340;
Step 330, line status is changed to fault case (0x55), execution in step 390;
The circuit physical state is changed to bad (0x55), and it is invalid that the circuit receiving and transmitting signal is changed to, and line status is changed to fault case (0x55), can not use.
Step 340, calculating main channel backup device i road transmission value MTx (i);
If configured rate is S ', then obtaining transmission rate is TxS=min (S, S ').
MTx (i)=0x80+ (TxS＜＜4)+MTxChn (i), 0x80 is the loopback detection sign.
MTxChn (i) is that the i road sends logical channel number.
Value MRx (i) and decomposition that step 350, reception are come from the channel backup device;
Step 360, if MRx (i)＞0x80, then execution in step 370, otherwise, execution in step 380;
Step 370, the circuit user mode is changed to loopback attitude (0xbb); Execution in step 390;
The circuit user mode is changed to loopback attitude (0xbb), can not uses.
Step 380, the circuit user mode is changed to uses attitude (0xaa); Execution in step 390;
Step 390, i are that step-length increases progressively with 1, if i＜TxS, then execution in step 310, otherwise, finish.
Continue to analyze next road, finish up to all line informations transmissions.
Flow process from the channel backup device is received and sent messages and handled may further comprise the steps,
Step 400, all E1 port of private line of initialization work in from channel backup device pattern; Obtain the total speed S of circuit; Variable i=0 of initialization;
Step 410, detect all E1 special line line statuss, obtain i route line state;
Step 420, judge whether i route line state has fault, if then execution in step 430; Otherwise execution in step 440;
Step 430, line status is changed to fault case (0x55), execution in step 480;
The circuit physical state is changed to bad (0x55), and it is invalid that the circuit receiving and transmitting signal is changed to, and line status is changed to fault case (0x55), can not use.
Value SRx (i) and decomposition that step 440, reception main channel backup device are come obtain receive logic channel number SRxChn (i), receiving velocity SRxS equivalence;
Step 450, will to send the logical channel number assignment be the receive logic channel number;
According to the arrangement action of main channel backup device, will send the logical channel number assignment is the receive logic channel number, i.e. STxChn (i)=SRxChn (i).
Step 460, calculating STS16 (i) transmission value send to main channel backup device;
STx(i)＝(TxS＜＜4)+STxChn(i)。
Step 470, the circuit user mode is changed to uses attitude (0xaa), execution in step 480;
Step 480, i are that step-length increases progressively with 1, if i＜TxS, then execution in step 410, otherwise, finish.
Continue to analyze next road, finish up to all line informations transmissions.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with the people of this technology in the disclosed technical scope of the present invention; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (6)
1. a wideband private wire conference television system channel backup method may further comprise the steps,
A, calculate the minimum value S of current available channel speed and configured rate, if the S value equates that with current communication speed S ' value then add up the current number of available channels k that is used, described k is an integer, if k less than described S, execution in step b then;
Whether b, detect main channel and disconnect, if then all channels all reconfigure, promptly logical channel number is since 0 configuration, finish up to the logic channel configuration of S-1; If not, then logical channel number finishes up to the configuration of the logic channel of S-1 since 1 configuration.
2. the method for claim 1 is characterized in that, among the described step a,
If described k is not less than S, represent that then the current line status that is just using in communication does not change, the channel backup configuration finishes.
3. a wideband private wire conference television system channel distribution method may further comprise the steps,
The minimum value S of step 110, the current available channel speed of calculating and configured rate makes comparisons with current communication speed S ': T=S-S '; If T=0, then execution in step 120;
Step 120, the current number of available channels k that is used of statistics, k is an integer; If k is less than S, then execution in step 130;
Do step 130, detection main channel disconnect? if then all channels all reconfigure;
Step 140, the minimum value S of current available channel speed and configured rate is composed to current communication speed S ';
In the described step 110, if following steps are then carried out in described T＞0,
Step 111, initialization i=0, i are integer;
Step 112, obtain the current available channel that is not used in i road;
Step 113, transmission logical channel number TxChn (i)=S '+i;
Step 114, put channel status for using;
Step 115, i are that step-length increases progressively with 1, if i＜T, then execution in step 112; Otherwise the raising speed configuration finishes, and carries out described step 140;
In the described step 110, if following steps are then carried out in described T＜0,
Do you step 117, judge that main channel disconnects? if then all channels all reconfigure, carry out described step 140; Otherwise execution in step 118;
Step 118, all reconfigure, carry out described step 140 from the logic channel of 1～S-1.
4. method as claimed in claim 3 is characterized in that, in the described step 120,
If described k is not less than S, represent that then the current line status that is just using in communication does not change, the channel backup configuration finishes.
5. method as claimed in claim 4 is characterized in that, in the described step 130, if main channel does not disconnect, then logical channel number is since 1 configuration, finishes up to the logic channel configuration of S-1.
6. method as claimed in claim 5 is characterized in that, in the described step 130, if main channel disconnects, then described all channels all reconfigure be logical channel number since 0 configuration, finish up to the logic channel configuration of S-1.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1581969A (en) * | 2003-08-13 | 2005-02-16 | 华为技术有限公司 | Rate adapting method |
| CN1722699A (en) * | 2004-07-14 | 2006-01-18 | 港湾网络有限公司 | A method of Ethernet transmission in a plurality of E1 channels |
| CN1750453A (en) * | 2004-09-14 | 2006-03-22 | 中兴通讯股份有限公司 | Method and system for realizing net clock non-synchronous multiple E1 service transmission |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1581969A (en) * | 2003-08-13 | 2005-02-16 | 华为技术有限公司 | Rate adapting method |
| CN1722699A (en) * | 2004-07-14 | 2006-01-18 | 港湾网络有限公司 | A method of Ethernet transmission in a plurality of E1 channels |
| CN1750453A (en) * | 2004-09-14 | 2006-03-22 | 中兴通讯股份有限公司 | Method and system for realizing net clock non-synchronous multiple E1 service transmission |
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