CN101159525A - Veneer master-slave rearranging method and system and a veneer - Google Patents
Veneer master-slave rearranging method and system and a veneer Download PDFInfo
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- CN101159525A CN101159525A CNA2007101882273A CN200710188227A CN101159525A CN 101159525 A CN101159525 A CN 101159525A CN A2007101882273 A CNA2007101882273 A CN A2007101882273A CN 200710188227 A CN200710188227 A CN 200710188227A CN 101159525 A CN101159525 A CN 101159525A
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Abstract
The invention discloses a method for single board main/standby switch, which comprises: a master control board sends a switch time information determined thereby to a main single board and a standby single board; the main single board and the standby single board utilize the received designated global frame timing signal as reference source to judge whether the time information contained in the designated global frame timing signal is the same as the switch information, if it is, performing the switch operation. The invention also discloses a system for single board main/standby switch and a single board. The method can ensure the single board main/standby switch synchronous and reduce the service loss during the single board main/standby switch process, even no loss.
Description
Technical field
The present invention relates to the communication technology, particularly a kind of method of single-board host-slave switching, system and a kind of veneer.
Background technology
In the communication technology,, general all the critical component of system is carried out the redundancy backup design for the reliability of system, make it can support active and standby part of work, guarantee mainly when breaking down, can smoothly be switched to spare unit, so that reduce of the influence of the main fault that occurs with parts system with parts.
Be in main veneer at work and be called the main veneer of using with state; The veneer that is in stand-by state is called standby board.Main with the backuping each other of veneer and standby board, can be implemented in and lead when breaking down with veneer, switch to standby board.Main this mutual switching with veneer and standby board is called masterslave switchover.
At present, existing multiple main is as 1+1 backup, N+1 backup.In fact, 1+1 backup is a special case of N+1 backup.Referring to Fig. 1, Fig. 1 carries out the schematic flow sheet of switching for single board main/standby 1+1 backup in the prior art, comprising:
Step 101: the master is in normal phase with veneer, and main with veneer normal process business, standby board is in stand-by state.
In this step, if the master is the working traffic plate with veneer, then in normal phase, the working traffic plate is used for finishing the processing of concrete business, and is professional such as transmitting, processing protocol etc.If main is main control board with veneer, then in normal phase, main control board is used for carrying out the processing of procotol message, the centralized dispatching of system resource and the management of system user etc.If main is the main coffret plate of using with veneer, then in normal phase, the master is used for transmitting data and control data with the coffret plate, so that for end-to-end connection provides reliable transmission service and flow control is provided, error control, service quality management services such as (QoS:Quality of Service).
Step 102: the master is broken down with veneer, master control borad arbitrates according to the main fault that occurs with veneer whether needs are switched, if, then sending break down main that be notified to that need switch with veneer and the standby board that is in stand-by state, execution in step 103 then; Otherwise, carry out fault recovery, make the master of breaking down return to normal condition with veneer.
In this step, the method whether the master control borad arbitration switches processing is: arbitrate this fault according to the main fault that occurs with veneer and whether satisfy the trigger condition of switching that sets in advance, if, execution in step 103, otherwise, the master of breaking down is carried out fault recovery with veneer, make this master return to normal state with veneer.
Step 103: break down main receive the notice that the needs of master control borad transmission switch with veneer and standby board after, switch processing.
In this step, break down main with veneer and standby board receive needs generation that master control borad sends switch notice after, that carries out switches processing, is specially:
The master of breaking down reduces to stand-by state with veneer, and former standby board is upgraded to the main state of using.
Step 104: switch finish dealing with after, what break down main carries out data smoothing with veneer and former standby board, and after finishing data smoothing, former standby board is taken over the former master of breaking down and carried out the processing of business with veneer.
In this step, it is main identical with veneer to need to guarantee that the master follows with the backboard of veneer, so that the master of breaking down carries out data smoothing with former standby board with veneer as well as possiblely; And guarantee data smoothing as much as possible to former standby board.
Therefore the process of above-mentioned single-board host-slave switching can be implemented in mainly when breaking down with veneer, and fault master reduces to stand-by state with veneer; Former standby board is upgraded to the main state of using, and after the master of breaking down carried out data smoothing with veneer and former standby board, former standby board was taken over the master of breaking down and carried out professional processing with veneer.
But, the flow process of single-board host-slave switching as can be seen from above-mentioned prior art, prior art is after single-board host-slave switching, and the master of breaking down just begins to carry out data smoothing with standby board with veneer, and then the master that the adapter of former standby board is broken down carries out professional processing with veneer.And during data smoothing, former standby board and the main normal process that can not carry out business with veneer that breaks down.Like this, the business that receives during will obliterated data level and smooth.
In order to reduce professional losing during the data smoothing, prior art has adopted the flow process of another kind of single-board host-slave switching again.Referring to Fig. 2, Fig. 2 carries out the schematic flow sheet of switching for another single board main/standby 1+1 backup of prior art.As shown in Figure 2, it comprises:
Step 202: the master is broken down with veneer, master control borad arbitrates according to the main fault that occurs with veneer whether needs are switched, if, then sending break down main that be notified to that need switch with veneer and the standby board that is in stand-by state, execution in step 203 then; Otherwise, carry out fault recovery, make the master of breaking down return to normal condition with veneer.This step 202 is identical with step 102 shown in Figure 1.
Step 203: break down main receive the notice that the needs of master control borad transmission switch with veneer and standby board after, carry out data smoothing, and after finishing data smoothing, be sent completely the master control borad that is notified to of data smoothing.
Step 204: master control borad sends in the mode of serial and to switch order to the main with veneer and standby board of fault occurring after receiving the above-mentioned notice of finishing data smoothing, and what break down mainly carries out the masterslave switchover processing with veneer and standby board.
In this step, master control borad sends in the mode of serial and switches order to the main with veneer and standby board of fault occurring, is specially:
Master control borad transmission is earlier switched order and is used veneer to the main of fault occurring, and this master after receiving order, reduces to stand-by state with veneer, and returns the master control borad that is notified to of successfully reducing to stand-by state.After master control borad is received this notice of successfully reducing to stand-by state, send and switch order to former standby board, former standby board is switched, and is upgraded to the main state of using, and takes over the former master of breaking down and carries out professional processing with veneer.As can be seen, reduce to stand-by state the master of breaking down with veneer, and former standby board is when switching, what break down mainly all is in stand-by state with veneer and former standby board, can not carry out the processing of business.
Therefore the process of above-mentioned masterslave switchover is after the master of breaking down finishes data smoothing with veneer and standby board, carries out the processing of masterslave switchover.But, master control borad is to notify break down main to carry out masterslave switchover with veneer and standby board in the mode of serial, make main not the reaching of breaking down switch synchronously with veneer and the standby board that is in stand-by state, like this, reduce to stand-by state main with veneer, but during former standby board is switched, will lose the business of new reception.
Summary of the invention
The embodiment of the invention provides a kind of method and system and a kind of veneer of single-board host-slave switching, so that under main situation about breaking down with veneer, reduces professional losing in the single-board host-slave switching process.
Embodiment of the present invention is achieved through the following technical solutions:
A kind of method of single-board host-slave switching, this method comprises:
Master control borad sends the switching time information of its decision to main veneer and the standby board used;
Main is reference source with the appointment overall situation frame timing signal that receives respectively with veneer and standby board, judges whether the temporal information of carrying in the overall frame timing signal of appointment is identical with switching time information, if switch processing.
A kind of system of single-board host-slave switching, this system comprises:
Master control borad is used to send the switching time information of its decision to main veneer and the standby board used;
Main with veneer and standby board, the appointment overall situation frame timing signal that is respectively applied for to receive is a reference source, judges whether the temporal information of carrying in the overall frame timing signal of appointment is identical with switching time information, if switch processing.
A kind of veneer, this veneer comprises: Transmit-Receive Unit and switch processing unit, wherein
Transmit-Receive Unit is used to receive the switching time information of its decision that the external piloting control plate sends and specifies overall frame timing signal, and the overall frame timing signal of the appointment that will receive sends to and switches processing unit;
Switch processing unit, the appointment overall situation frame timing signal that is used for to receive is a reference source, judges whether the temporal information of carrying in the overall frame timing signal of appointment is identical with switching time information, if switch processing.
As seen from the above technical solutions, the embodiment of the invention sends the switching time information of its decision to main veneer and the standby board used by master control borad; Main is reference source with veneer and standby board with the appointment overall situation frame timing signal that receives, judge whether the temporal information of carrying in the overall frame timing signal of appointment is identical with switching time information, if, then switch processing, thereby can guarantee that the master reaches synchronous with switching of veneer and standby board, reduce main professional losing in reversed process, even do not lose with veneer and standby board.
Description of drawings
Fig. 1 carries out the schematic flow sheet of switching for single board main/standby 1+1 backup in the prior art;
Fig. 2 carries out the schematic flow sheet of switching for another single board main/standby 1+1 backup in the prior art;
Fig. 3 carries out the preferred embodiment of main and standby rearranging method for embodiment of the invention single board main/standby 1+1 backup when the master produces fault with veneer process chart;
Fig. 4 is the system diagram of embodiment of the invention single-board host-slave switching;
Fig. 5 forms structure chart for embodiment of the invention veneer.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
Unlike the prior art be that the embodiment of the invention is: the switching time information that master control borad sends its decision to main with veneer and standby board; Main is reference source with veneer and standby board with the appointment overall situation frame timing signal that receives, and judges whether the temporal information of carrying in the overall frame timing signal of appointment is identical with switching time information, if then switch processing.
Overall situation frame timing signal can provide the frame number and the absolute time information of system synchronization as the reference synchronization source of system, is applicable to the base station of all wireless standards.The embodiment of the invention is that the overall frame timing signal with appointment is a reference source, judges whether the temporal information of carrying in the overall frame timing signal of appointment is identical with switching time information, if, then arrive and switch constantly, switch processing.
Wherein, overall frame timing signal is produced in real time by master control borad, specifically, is to be produced by the master clock plate in the master control borad.The overall frame timing signal of appointment is the one or more of the real-time overall frame timing signal that produces of master control borad.But, only have one to specify the temporal information of carrying in the overall frame timing signal identical with the switching time information of master control borad decision.
In addition, when the master is in normal phase with veneer, send business to main different modes with veneer and standby board according to business board, the embodiment of the invention has been done different analyses.Generally, business board sends professional to main veneer and the standby board used at least by following three kinds of modes:
First kind of mode: business board adopts the multicast mode to send business.In this way, main can both receive business, but have only mainly that and the business after will handling sends to the port in line side, so that be connected in external network or the external equipment with the manage business business of plate transmission of veneer with veneer and standby board; And standby board receives only the business that business board sends, and does not handle and send the business that business board sends.
The second way: business board adopts the mode with veneer logic communication address to send business.In this way, business board only sends the professional pairing veneer in veneer logic communication address to its record.In the application, generally all main logic communication address with veneer is recorded in the business board.
The third mode: if the master is two veneers with different communication address with veneer and standby board, and it is professional that business board does not adopt above-mentioned dual mode to send, then when proper communication, business board only adopts current main mailing address with veneer to send business and uses veneer to main, and standby board under normal circumstances can not get the business that business board sends.
The embodiment of the invention sends business according to above-mentioned business board and has done different analyses to main with veneer and standby board under different modes.Following embodiment will be illustrated respectively at above-mentioned three kinds of modes.
Referring to Fig. 3, Fig. 3 carries out the preferred embodiment of main and standby rearranging method for embodiment of the invention single board main/standby 1+1 backup when the master produces fault with veneer process chart.This flow process may further comprise the steps:
The method of the single-board host-slave switching that present embodiment provides is applicable to data backup modes different in the existing communication technology, as Hot Spare, and warm spare or cold standby.Present embodiment is the method that realizes single-board host-slave switching at the mode of warm spare.
In this step, the main trace routine that breaks down with veneer can be arranged on break down main with in the veneer or be arranged in the standby board that is in stand-by state, also can be independent of the master of breaking down and neutralize with veneer and be in the standby board of stand-by state.
In the present embodiment if main be main control board with veneer, then be whether main control board is arbitrated it according to the fault of its appearance and switched with slave control board.Generally, do not carry out correct arbitration so long as the fault that main control board occurs does not influence it, present embodiment just can be realized.
Present embodiment master control borad arbitration whether need to switch during, continue to manage business with veneer by former master.
Present embodiment for guarantee main with veneer and standby board when switching; time is short as far as possible; so that reduce influence to business; generally; the master backs up with employing E1Y type mode between veneer and the standby board, and main with the support of Optical synchronization digital transmission system (SDH) port between veneer and standby board multiplex section protection (MSP) function.
In this step, master control borad sends the notice that need switch, mainly is to notify break down main ready with veneer and the standby board that is in stand-by state, carries out following step 303.
In the present embodiment, if it is professional to the main first kind of mode or the second way with veneer and standby board to adopt above-mentioned business board to send, then the concrete implementation and operation carried out of master control borad is identical with the operation in the step 302.
If the above-mentioned business board of employing sends professional to main the third mode with veneer and standby board, then in step 302, master control borad also sends the business board that is notified to that need switch.
This step sends between the notice day that needs to switch at master control borad, continues to be managed business with veneer by the master of breaking down.
Data smoothing in this step is specially: the main configuration data and the status data with veneer that will break down smooths to the standby board that is in stand-by state.By this step, can make main configuration data and status data be close to the harmless standby board that smooths to veneer.And this step continues to be managed business with veneer by the master of breaking down during data smoothing.
In this step, the switching time of master control borad decision depends primarily on the time delay of communicating by letter with between veneer and standby board current system time information and the veneer.Like this, can guarantee the accuracy of switching time; Also can shorten the master and in following step, wait for the time of switching with veneer and standby board.
This step master control borad decision switching time and send its decision switching time during, continue to manage business with veneer by the master of breaking down.
In the present embodiment, if it is professional to the main first kind of mode or the second way with veneer and standby board to adopt above-mentioned business board to send, then the concrete implementation and operation carried out of master control borad is identical with the operation of step 304.
If it is professional to main the third mode with veneer and standby board to adopt above-mentioned business board to send, then in step 304, master control borad also sends the switching time of its decision to business board.
In the present embodiment, main to be arranged on the overall frame timing signal that the common multiple of each definition receives constantly with veneer and standby board be the overall frame timing signal of appointment.Wherein, the common multiple of definition is the frame length of frame system to be transmitted and the indicated moment of common multiple that the interchangeable frame frame length is determined constantly.Such as, the wireless frame length of choosing the interchangeable frame frame length and be a WCDMA is 10ms, then in the present embodiment, if frame waiting for transmission is made as base station (Node B), and the frame length of Node B is 10ms, then calculate the frame length of Node B and the common multiple of interchangeable frame frame length 10ms, obtaining this common multiple is 10ms.Promptly the overall frame timing signal that receives at every 10ms main and standby boards is the overall frame timing signal of appointment.Certainly, in the present embodiment, if frame waiting for transmission is made as GSM, and the frame length of GSM is 60/13ms, then calculates the frame length of GSM and the common multiple of interchangeable frame frame length 10ms, and can obtain this common multiple is 60ms.Therefore, for GSM, be the overall frame timing signal of once appointment every 60ms.
Switching time in the present embodiment can be for specifying the FN of overall frame timing signal; Also can be for specifying the absolute time information in the overall frame timing signal.Wherein, specify FN in the overall frame timing signal to increase progressively the FN of integer C1 frame to be transmitted every the moment of above-mentioned common multiple indication.C1 is the ratio of this common multiple and frame system frame length to be transmitted.
If the switching time of master control borad decision is FN, whether the FN in the main overall frame timing signal that receives constantly according to common multiple with veneer and the standby board that is in stand-by state that then breaks down judges current for switching the moment.Such as, if master control borad sends to the masterslave switchover time be: FN=3, the master of then breaking down judges with veneer and the standby board that is in stand-by state whether the frame number that carries in the appointment overall situation frame timing signal of current reception equals 3, is then to switch processing; Otherwise, continue to wait for, till arrival is switched constantly.
If the masterslave switchover time of master control borad decision for specifying the absolute time information in the overall frame timing signal, then break down main with veneer and the standby board that is in stand-by state according to specifying absolute time information in the overall frame timing signal to judge that current whether arrival switch the moment.Can certainly arbitrate according to current system time information.Because generally, current system time information also is according to specifying the absolute time information in the overall frame timing signal to calibrate.Such as, suppose that break down main upgrades a time with veneer and the standby board that is in stand-by state according to the every 10ms of its system time information, if the switching time that master control borad sends is the time of upgrading for the third time, i.e. the 3rd 10ms, then main and standby boards judges whether the absolute time information that carries in the overall frame timing signal of current reception appointment is the 3rd 10ms, be that then current time is switched processing for switching constantly; Otherwise, continue to wait for, till arrival is switched constantly.
In the present embodiment, the interchangeable frame frame length is that the wireless frame length of a WCDMA is 10ms, and overall frame timing signal is BFN, and like this, the overall frame timing signal of appointment is the BFN of appointment accordingly.
In the present embodiment, if it is professional to the main first kind of mode or the second way with veneer and standby board to adopt above-mentioned business board to send, then break down main to judge whether to arrive the concrete implementation and operation of switching the moment with veneer and the standby board that is in stand-by state identical with the operation in the step 305.
In the present embodiment, if it is professional to main the third mode with veneer and standby board to adopt above-mentioned business board to send, then in step 305, comprise that also business board is a reference source with the appointment overall situation frame timing signal that receives, judge whether the temporal information of carrying in the overall frame timing signal of appointment is identical with switching time, if, execution in step 306; Otherwise the master of breaking down continues to manage business with veneer, till arrival is switched constantly.
Step 306 is carried out masterslave switchover, and the master of breaking down stops professional processing and transmission with veneer, enters stand-by state; Former standby board is upgraded to the master and uses state, takes over former master and handles and send professional with veneer.
Present embodiment, if it is professional to the main first kind of mode or the second way with veneer and standby board to adopt above-mentioned business board to send, what then break down is main with veneer and to be in the concrete implementation and operation of standby board execution of stand-by state identical with the operation in the step 306.
In the present embodiment, if it is professional to main the third mode with veneer and standby board to adopt above-mentioned business board to send, then in step 306, also comprise the main mailing address that the mailing address replacement of former standby board is broken down in the business board execution, so that carry out the processing of follow-up business with veneer.Hence one can see that, and when carrying out the masterslave switchover processing, business board upgrades the original professional mailing address that sends, i.e. the main mailing address with veneer that breaks down with the mailing address replacement of former standby board.
Master in the present embodiment is that the master uses the coffret plate with veneer, perhaps is the working traffic plate, perhaps is main control board; Standby board is standby coffret plate, perhaps is standby business board, perhaps is slave control board.
Main in present embodiment is when leading that to use coffret plate, standby board be standby coffret plate with veneer, and it is identical with step in the present embodiment that it carries out the flow process of main and standby rearranging method, repeats no more here.
When main in the present embodiment is the working traffic plate with veneer, when standby board was standby business board, present embodiment was applicable to that also business board N+M backs up.1+1 backup is a special case of N+M backup.Wherein, N is the number of working traffic plate, and M is standby business board.Generally, N, M is a natural number, N is not less than M.When breaking down such as a certain in N piece working traffic plate, if after master control borad is arbitrated, definite switching, then master control borad sends the standby business board that is notified to working traffic plate that breaks down and the operate as normal of selecting thereof in the standby business board of M piece that need switch.The working traffic plate that breaks down and the standby business board of above-mentioned selection receive that master control borad sends switch notice after, carry out data smoothing, and after finishing data smoothing, be sent completely the master control borad that is notified to of data smoothing.After master control borad receives this notice of finishing data smoothing, the switching time of decision masterslave switchover, and masterslave switchover time of its decision sent to the working traffic plate that breaks down and the standby business board of above-mentioned selection.The working traffic plate that breaks down and the standby business board of above-mentioned selection are reference source with the appointment overall situation frame timing signal that receives, judge whether the temporal information of carrying in the overall frame timing signal of appointment is identical with switching time, if, current for switching constantly, fault working traffic plate will enter stand-by state, and the standby business board of selecting will be upgraded to the main state of using, and substitutes the working traffic plate that breaks down and carries out professional processing.
Master in present embodiment is a main control board with veneer, and when standby board was slave control board, then if the master is broken down with veneer, just main control board broke down.Like this, in step 301, main control board breaks down, and this main control board arbitrates according to the fault of its appearance whether needs are switched.Equally, in step 302, also be to send himself and the slave control board of being notified to that to switch by main control board.Because, generally, comprise some unit in the main control board, can interactive information between them.The step 303 of other steps and present embodiment, step 304, step 305 and step 306 are similar, only need correspondingly to change the master in the step into main control board with veneer and master control borad, and standby board changes slave control board into.
Certainly, in the present embodiment, when main be main with veneer with the coffret plate or when being the working traffic plate, if the main fault that occurs with veneer is very serious, such as, have influence on the normal operation of single board system, then master control borad is main with veneer be in the standby board of stand-by state to what fault occurs for the information that guarantees the normal operation of single board system, can send to switch immediately.Main with veneer and standby board after receiving this switch messages, switch immediately, not execution in step 303 and later step thereof.When the master is main control board with veneer, if main with the serious fault of veneer appearance, such as, have influence on the fault that this master control borad is normally arbitrated its appearance, then the master in the present embodiment also can switch immediately with veneer and standby board, not execution in step 302 and later step thereof.
System to the embodiment of the invention is described in detail below.Fig. 4 is the system diagram of embodiment of the invention single-board host-slave switching, and is shown in Figure 4, and this exchanging system mainly comprises: master control borad 401, and main with veneer 402 and standby board 403.
Master control borad 401 is used to send the switching time of its decision to main veneer 402 and the standby board 403 used.
Main with veneer 402 and standby board 403, be used for the overall frame timing signal that the common multiple in each definition receives constantly and be set to specify overall frame timing signal.
Main with veneer 402 and standby board 403, the appointment overall situation frame timing signal that can also be used for to receive is a reference source, judges whether the temporal information of carrying in the overall frame timing signal of appointment is identical with switching time, if, then arrive and switch constantly, switch processing.
In the present embodiment, main can be that the master uses coffret plate and standby coffret plate with veneer 402 and standby board 403; Perhaps be working traffic plate and standby business board; Perhaps be main control board and slave control board.When the master was main control board and slave control board with veneer 402 and standby board 403, then master control borad 401 was exactly main with veneer 402.The main operation of carrying out master control borad 401 with veneer 402.
Fig. 5 is the composition structure chart of a kind of veneer of the embodiment of the invention, and as shown in Figure 5, this veneer comprises Transmit-Receive Unit 501 and switch processing unit 502, wherein
Transmit-Receive Unit 501 is used to receive the appointment overall situation frame timing signal that the external piloting control plate sends and the switching time information of its decision, and the appointment overall situation frame timed sending of its reception is given switch processing unit 502.
Switch processing unit 502, the overall frame timing signal that is used for Transmit-Receive Unit 501 is received constantly at the common multiple of each definition is as specifying overall frame timing signal.
Switch processing unit 502, the appointment overall situation frame timing signal that can also be used for to receive Transmit-Receive Unit 501 transmissions is a reference source, judges whether the temporal information of carrying in the overall frame timing signal of appointment is identical with switching time information, if, arrival is switched constantly, switches processing.
Therefore, the method for the single-board host-slave switching of present embodiment, system and veneer, the switching time information that sends its decision by master control borad is to main veneer and the standby board used; Main is reference source with veneer and standby board with the appointment overall situation frame timing signal that receives, and judges whether the temporal information of carrying in the overall frame timing signal of appointment is identical with switching time, if then switch processing.Can provide and switch accurately constantly, guarantee that single-board host-slave switching reaches synchronously, reduce professional losing in the masterslave switchover process.
Institute is understood that; the above is a better embodiment of the present invention only, and is not intended to limit the scope of the invention, and is within the spirit and principles in the present invention all; any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the method for a single-board host-slave switching is characterized in that, this method comprises:
Master control borad sends the switching time information of its decision to main veneer and the standby board used;
Main is reference source with the appointment overall situation frame timing signal that receives respectively with veneer and standby board, judges whether the temporal information of carrying in the overall frame timing signal of appointment is identical with switching time information, if then switch processing.
2. the method for claim 1 is characterized in that, the overall frame timing signal of described appointment is the overall frame timing signal that the common multiple of each definition receives constantly.
3. method as claimed in claim 2 is characterized in that, the common multiple of described definition is constantly: the moment of the least common multiple indication of the frame length of the frame length of frame system to be transmitted and interchangeable frame system.
4. method as claimed in claim 3 is characterized in that, the switching time information of described master control borad decision is absolute time information;
Whether described judgement specifies the temporal information of carrying in the overall frame timing signal identical with described switching time information, comprising: judge whether the absolute time information that carries in the overall frame timing signal of appointment is identical with described switching time information.
5. method as claimed in claim 3 is characterized in that, the switching time information of described master control borad decision is frame number FN;
Whether described judgement specifies the temporal information of carrying in the overall frame timing signal identical with described switching time information, comprising: judge whether the frame number that carries in the overall frame timing signal of appointment is identical with described switching time information.
6. method as claimed in claim 5 is characterized in that, the frame number FN in the overall frame timing signal of described appointment increases progressively the frame number FN of an integer frame to be transmitted every the common multiple time.
7. the system of a single-board host-slave switching is characterized in that, this system comprises:
Master control borad is used to send the switching time information of its decision to main veneer and the standby board used;
Main with veneer and standby board, the appointment overall situation frame timing signal that is respectively applied for to receive is a reference source, judges whether the temporal information of carrying in the overall frame timing signal of appointment is identical with switching time information, if switch processing.
8. system as claimed in claim 7 is characterized in that, describedly main be used for the overall frame timing signal that the common multiple in each definition receives constantly with veneer and standby board and be set to specify overall frame timing signal.
9. a veneer is characterized in that, this veneer comprises: Transmit-Receive Unit and switch processing unit, wherein,
Transmit-Receive Unit is used to receive the switching time information of specifying overall frame timing signal and external piloting control plate to send, and the appointment that will receive overall situation frame timing signal sends to and switches processing unit;
Switch processing unit, the appointment overall situation frame timing signal that is used for to receive is a reference source, judges whether the temporal information of carrying in the overall frame timing signal of appointment is identical with switching time information, if switch processing.
10. veneer as claimed in claim 9 is characterized in that, the described processing unit of switching, and the overall frame timing signal that is used for described Transmit-Receive Unit is received constantly at the common multiple of each definition is as specifying overall frame timing signal.
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| WO2013044643A1 (en) * | 2011-09-30 | 2013-04-04 | 中兴通讯股份有限公司 | Packet service bus switching method, system and data exchange communication device |
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| CN1092864C (en) * | 1998-08-25 | 2002-10-16 | 华为技术有限公司 | Master backup reverse device |
| JP2000295236A (en) * | 1999-04-05 | 2000-10-20 | Hitachi Telecom Technol Ltd | Atm transmitter |
| CN1184744C (en) * | 2001-08-21 | 2005-01-12 | 华为技术有限公司 | Master-spare converting control circuit and method for realizing it |
| CN1251419C (en) * | 2002-05-30 | 2006-04-12 | 华为技术有限公司 | Method for realization of fast rearranging main spared device in communication devices |
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| WO2013044643A1 (en) * | 2011-09-30 | 2013-04-04 | 中兴通讯股份有限公司 | Packet service bus switching method, system and data exchange communication device |
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