CN102611493A

CN102611493A - Fault processing and recovering method and system of BBU (Base Band Unit), RRU (Remote Radio Unit) and annular network

Info

Publication number: CN102611493A
Application number: CN2011100245147A
Authority: CN
Inventors: 张仕亮
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2011-01-21
Filing date: 2011-01-21
Publication date: 2012-07-25
Anticipated expiration: 2031-01-21
Also published as: CN102611493B; WO2012097628A1

Abstract

The invention discloses a fault processing and recovering method and system of a BBU (Base Band Unit), an RRU (Remote Radio Unit) and an annular network, which can guarantee the continuity of businesses. The fault processing method comprises the following steps that: a certain optical fiber in the annular network breaks down to trigger a light opening LOP (Loss Of Pointer) alarm, and the RRU of the backward stage of the broken optical fiber is processed by clock switching; the BBU obtains the light opening LOP alarm from a first light opening; and a first physical control word is sent to the RRU processed by the clock switching in the annular network through a second light opening, so as to indicate the reconnection of the RRU processed by the clock switching and the second light opening of the BBU. The fault recovering method comprises the following steps that: after the BBU knows that the optical fiber fault is recovered, the first physical control word is sent from the second light opening to indicate that the reconnected RRU is processed by the clock switching when the optical fiber breaks down; and the BBU sends out a second physical control word from the first light opening so as to indicate the reconnection of the RRU processed by the clock switching and the first light opening of the BBU from a current clock locking light opening.

Description

The troubleshooting of BBU, RRU, annular networking, restoration methods and system

Technical field

The present invention relates to communication field, relates in particular to a kind of BBU (baseband processing unit), RRU (remote radio unit (RRU)), and the troubleshooting under the annular networking mode, restoration methods and system.

Background technology

TD-SCDMA (TD SDMA) network uses the distributed base station framework in a large number; BBU (Building Base band Unite; Baseband processing unit) concentrates placement; The networking mode that RRU (Radio RemoteUnit, remote radio unit (RRU)) zooms out in the strange land adopts optical fiber to connect between BBU and the RRU.A BBU can support a plurality of RRU.The networking mode of RRU has: chain, star-like, these networking modes have only a pair of optical fiber to connect with BBU, do not possess fiber protection function.What the distance between BBU and the RRU had reaches tens kilometers, causes RRU can't normally provide professional usually because optical fiber receives extraneous destruction.For this reason, proposed the novel networking mode of a kind of RRU: annular networking, promptly BBU is connected with RRU respectively through two light mouths.

But under the annular networking mode, when fiber failure, how to guarantee that professional continuity is the problem that exists at present.

Summary of the invention

The technical problem that the present invention will solve provides troubleshooting, restoration methods and the system of a kind of BBU, RRU, annular networking, guarantees professional continuity.

For solving the problems of the technologies described above, the invention provides the fault handling method under a kind of annular networking mode, comprising:

Certain optical fiber breaks down and touches the light outlets luminous power and lacks (LOP) alarm in the looped network, and the remote radio unit (RRU) (RRU) of level carries out the clock switching behind the fault optical fiber; Baseband processing unit (BBU) is known light mouth LOP alarm through the first light mouth, and the RRU that in looped network, has carried out the clock switching through the second light mouth sends the first physics control word, to indicate the said RRU of clock switching and the salty new link setup of second light of BBU of having carried out.

Preferably, the said optical fiber that breaks down is downlink optical fiber; The RRU of level carries out the step that clock switches and comprises behind the said fault optical fiber:

Current first line of a couplet light mouth connects the RRU of said downlink optical fiber after detecting said light mouth LOP alarm; Clock is switched to current second line of a couplet light mouth; And, then close the transmission optical fiber of its current second line of a couplet light mouth if the RRU that said current first line of a couplet light mouth connects said downlink optical fiber is non-final stage RRU in the looped network;

All RRU of subordinate that said current first line of a couplet light mouth connects the RRU of said downlink optical fiber carry out following operation step by step according to the order from prime to back level: detect owing to after the LOP alarm that optical fiber closure triggers, clock is switched to second line of a couplet light mouth; Judge that this RRU is non-final stage RRU, then closes the transmission optical fiber of its current second line of a couplet light mouth.

Preferably, the said optical fiber that breaks down is downlink optical fiber, and BBU knows that through the first light mouth step of light mouth LOP alarm comprises:

Current first line of a couplet light mouth connects the RRU of said downlink optical fiber after detecting said light mouth LOP alarm; Close the transmission optical fiber of its current first line of a couplet light mouth; The higher level RRU of said RRU detects owing to after the LOP alarm that optical fiber closure triggers, this LOP alarm is reported to the BBU first light mouth step by step; Perhaps

When the RRU that current first line of a couplet light mouth connects said downlink optical fiber is chopped-off head RRU, its after detecting said light mouth LOP alarm, directly with this LOP alarm report to the BBU first light mouth.

Preferably, said BBU has carried out the RRU that clock switches through the second light mouth and has sent the first physics control word in looped network, comprises with the step of the salty new link setup of second light of indicating said RRU and BBU:

Said BBU sends the first physics control word through the second light mouth has carried out the clock switching in looped network RRU;

The said RRU that has carried out the clock switching receives the said first physics control word from the light mouth that present clock locks; After the said first physics control word of judgement is to belong to the physics control word of this RRU processing; If judge it pent transmission optical fiber is arranged; Then open pent transmission optical fiber, and from the light mouth of present clock locking and the salty new link setup of second light of said BBU.

Preferably, the said optical fiber that breaks down is uplink optical fibers, and said BBU knows that through the first light mouth step of light mouth LOP alarm comprises:

Current second line of a couplet light mouth connects the RRU of said uplink optical fibers after detecting said light mouth LOP alarm, and this LOP alarm is reported to the BBU first light mouth step by step.

Preferably, the said optical fiber that breaks down is uplink optical fibers, and the RRU of level carries out the step that clock switches and comprises behind the said fault optical fiber:

After said BBU is known light mouth LOP alarm from the first light mouth; Send the second physics control word from the first light mouth; The RRU of level judges that the said second physics control word is not belong to the physics control word that this RRU handles, and carries out clock and switches behind the fault optical fiber after receiving the said second physics control word.

Said BBU sends the first physics control word through second RRU of light mouth in looped network;

Behind the said fault optical fiber the carrying out of level after clock switches RRU and receives the first physics control word, judge that the said first physics control word is to belong to the physics control word that this RRU handles, from the light mouth of present clock locking and the salty new link setup of second light of said BBU.

Preferably; Said BBU is after knowing that fiber failure recovers; According to the arrangement tertium quid before fiber failure reason control word, and issue, after the RRU that when said fiber failure, has carried out link re-establishment is receiving tertium quid reason control word from the second light mouth; Judge that said tertium quid reason control word is not belong to the physics control word that this RRU handles, carry out clock and switch;

Said BBU issues the 4th physics control word from the first light mouth, to indicate the said salty new link setup of first light that has carried out the RRU of clock switching from present clock locking light mouth and said BBU.

For solving the problems of the technologies described above; The present invention also provides the fault recovery method under a kind of annular networking mode; During certain fiber failure, the back level remote radio unit (RRU) (RRU) of fault optical fiber has carried out link re-establishment with the second light mouth of baseband processing unit (BBU) in the looped network, and said method comprises:

Said BBU issues the first physics control word from the second light mouth after knowing that said fiber failure recovers, the RRU that has carried out link re-establishment when the said fiber failure with indication carries out clock and switches;

Said BBU issues the second physics control word from the first light mouth, to indicate the said salty new link setup of first light that has carried out the RRU of clock switching from present clock locking light mouth and said BBU.

Preferably, said BBU issues the first physics control word from the second light mouth, and the RRU that has carried out link re-establishment when the said fiber failure with indication carries out the step that clock switches and comprises:

The be configured to said second light mouth of said BBU before according to said fiber failure disposes the first physics control word, sends the said first physics control word from the said second light mouth;

After the RRU that when said fiber failure, has carried out link re-establishment is receiving the first physics control word, judge that the said first physics control word for not belonging to the physics control word that this RRU handles, carries out clock and switch.

Preferably, said BBU issues the second physics control word from the first light mouth, comprises from the step that present clock locks the salty new link setup of first light of light mouth and said BBU to indicate the said RRU that has carried out the clock switching:

Said BBU is configured to the said first smooth outlet structure second physics control word before according to said fiber failure, and sends the said second physics control word from the said first light mouth;

When said fiber failure, carried out link re-establishment; And carried out RRU that clock switches after receive the said second physics control word according to the said first physics control word; Judge that the said second physics control word is to belong to the physics control word that this RRU handles, and then locks the salty new link setup of first light of light mouth and said BBU from present clock.

For solving the problems of the technologies described above, the present invention also provides the fault processing system under a kind of annular networking mode, comprising: be positioned at first device of remote radio unit (RRU) (RRU) and be positioned at second of baseband processing unit (BBU) and install, wherein:

Said first installs, and is used for when looped network optical fiber breaks down and touch light outlets luminous power disappearance (LOP) alarm, and control RRU carries out clock and switches, and is used for after the first physics control word that receives said BBU transmission, with said BBU link re-establishment;

Said second device is used for knowing light mouth LOP alarm through the first light mouth, and is used for sending the first physics control word through the second light mouth to the RRU that looped network has carried out the clock switching, indicates the salty new link setup of second light of said RRU and BBU.

Preferably, said first device comprises first module, Unit second and Unit the 3rd, wherein:

Said first module is used for when the downlink optical fiber that the current first line of a couplet light of current RRU mouth connects breaks down, and is perhaps detecting owing to after the LOP alarm that optical fiber closure triggers, clock is switched to second line of a couplet light mouth, and close transmission optical fiber;

Said Unit second is used for detecting owing to after the LOP alarm that optical fiber closure triggers, this LOP alarm is reported to the BBU first light mouth step by step;

Said Unit the 3rd is used for confirming that current RRU has carried out the clock switching, and is receiving said BBU after the first physics control word that belongs to this RRU processing of second light mouth transmission, with the salty new link setup of second light of BBU.

Preferably, said first module comprises modules A and module B, wherein:

Said modules A; Be used for when the downlink optical fiber that the current first line of a couplet light of current RRU mouth connects breaks down; Judge that current RRU is final stage RRU; Then said modules A is closed the transmission optical fiber of said current RRU first line of a couplet light mouth, judges that current RRU is non-final stage RRU, and then said modules A is closed the transmission optical fiber of the current second line of a couplet light of said current RRU mouth;

Said module B; Be used for detecting because after the LOP alarm that optical fiber closure triggers, the clock of current RRU switched to current second line of a couplet light mouth, and judge whether current RRU is final stage RRU; If; Then said module B closes the transmission optical fiber of the current first line of a couplet light of said current RRU mouth, if not, then said module B closes the transmission optical fiber of the current first line of a couplet light of said current RRU mouth and the transmission optical fiber of current second line of a couplet light mouth.

Preferably, said first device also comprises Unit the 4th, and it is used for current RRU receives the physics control word that does not belong to this RRU processing from current first line of a couplet light mouth after, controls current RRU and carries out the clock switching; After carrying out the clock switching, after current RRU receives the physics control word that belongs to this RRU processing from present clock locking light mouth, control the light salty new link setup of current RRU from this physics control word of transmission of present clock locking light mouth and BBU.

Preferably, said second device comprises: unit I and unit II, wherein:

Said unit I; Be used for after the light mouth LOP alarm that receives the downlink optical fiber fault triggering from the first light mouth; RRU number according to the second light mouth control of confirming is again constructed the first physics control word; And from the transmission of the second light mouth, RRU and the salty new link setup of said second light that clock switches have been carried out in indication;

Said unit II; Be used for after the light mouth LOP alarm that receives the uplink optical fibers fault triggering from the first light mouth; RRU number according to the first light mouth control of confirming is again constructed the second physics control word, and sends from the said first light mouth, makes the RRU of non-first light mouth control carry out the clock switching; And be used for constructing the first physics control word according to the RRU number of the second light mouth control of confirming again, and send from the said second light mouth, make said carried out RRU and the salty new link setup of said second light that clock switches.

Preferably; Said second device comprises: unit III; It is used for: after know that fiber failure recovers; According to the RRU number structure tertium quid reason control word of the second light mouth control of disposing before the fiber failure, and from said second light mouth transmission, the RRU that the non-second light mouth is controlled carries out clock and switches; And be used for constructing the 4th physics control word according to the RRU number of the first light mouth control of disposing before the fiber failure, and send from the said first light mouth, make said carried out RRU and the salty new link setup of said first light that clock switches.

For solving the problems of the technologies described above, the present invention also provides the remote radio unit (RRU) in a kind of annular networking mode (RRU), comprises first module, Unit second and Unit the 3rd, wherein:

Preferably, said first module comprises modules A and module B, wherein:

Preferably, said RRU also comprises Unit the 4th, and it is used for current RRU receives the physics control word that does not belong to this RRU processing from current first line of a couplet light mouth after, controls current RRU and carries out the clock switching; After carrying out the clock switching, after current RRU receives the physics control word that belongs to this RRU processing from present clock locking light mouth, control current RRU and send the salty new link setup of light of physics control word from present clock locking light mouth and BBU.

For solving the problems of the technologies described above, the present invention also provides the baseband processing unit in a kind of annular networking mode (BBU), comprising: first module, Unit second, wherein:

Said first module; Be used for after the light mouth LOP alarm that receives the downlink optical fiber fault triggering from the first light mouth; RRU number according to the second light mouth control of confirming is again constructed the first physics control word; And from the transmission of the second light mouth, RRU and the salty new link setup of said second light that clock switches have been carried out in indication;

Said Unit second; Be used for after the light mouth LOP alarm that receives the uplink optical fibers fault triggering from the first light mouth; RRU number according to the first light mouth control of confirming is again constructed the second physics control word, and sends from the said first light mouth, makes the RRU of non-first light mouth control carry out the clock switching; And be used for RRU number structure tertium quid reason control word according to the second light mouth control of confirming again, and send from the said second light mouth, make said carried out RRU and the salty new link setup of said second light that clock switches.

Preferably; Said BBU also comprises: Unit the 3rd, and it is used for: after know that fiber failure recovers, according to the RRU number structure tertium quid reason control word of the second light mouth control of disposing before the fiber failure; And, make the RRU of non-second light mouth control carry out the clock switching from said second light mouth transmission; And be used for constructing the 4th physics control word according to the RRU number of the first light mouth control of disposing before the fiber failure, and send from the said first light mouth, make said carried out RRU and the salty new link setup of said first light that clock switches.

In the embodiment of the invention, BBU and RRU be according to light mouth alarm, and initiate light mouth heat and switch through transmitting the alarm of light mouth, realizes RRU under BBU and the RRU ring network mode from other second line of a couplet light mouth link setup, and switch step by step with the mode of fault delivery.After fault disappears, can return to initial connection status rapidly.Through the inventive method, when because certain bar fiber failure causes link to be had no progeny, can switch as soon as possible and link re-establishment, guarantee professional continuity, gain time for on-site maintenance personnel field repair fault simultaneously.

Description of drawings

Fig. 1 is the structural representation of the related looped network of the embodiment of the invention;

Fig. 2 is the embodiment of the invention 1 flow chart;

Fig. 3 is the downlink optical fiber fault sketch map of embodiment of the invention 1RRU first line of a couplet light mouth;

Fig. 4 is the embodiment of the invention 2 flow charts;

Fig. 5 is the uplink optical fibers fault sketch map of embodiment of the invention 2RRU first line of a couplet light mouth;

Fig. 6 is the embodiment of the invention 3 flow charts;

Fig. 7 is the normal sketch map of up-downgoing optical fiber of embodiment of the invention 3RRU first line of a couplet light mouth.

Embodiment

Because the limitation of prior art can cause service disconnection when certain fiber failure.The present invention proposes a kind of RRU reverse method for this reason, to carry out link switchover, guarantees professional continuity.

The present invention adopts following technical scheme:

Be positioned at the sending direction of RRU light mouth and the difference of receive direction to the fault point, adopt different changing methods.

● the said optical fiber that breaks down is downlink optical fiber:

Then the RRU of level carries out the step that clock switches and comprises behind the fault optical fiber:

That is to say,, make back level RRU carry out clock and switch through closing the transmission optical fiber of second line of a couplet light mouth step by step.

Above-mentioned BBU knows that through the first light mouth step of light mouth LOP alarm comprises:

Preferably, for Unified Treatment, non-final stage RRU also can close the transmission optical fiber of current second line of a couplet light mouth.

That is to say that the purpose of closing the transmission optical fiber of first line of a couplet light mouth is to make BBU to know this fiber failure.

Above-mentioned BBU has carried out the RRU that clock switches through the second light mouth and has sent the first physics control word in looped network, comprise with the step of the salty new link setup of second light of indicating said RRU and BBU:

BBU sends the first physics control word through the second light mouth has carried out the clock switching in looped network RRU;

Behind the salty new link setup of said BBU second light, RRU present clock locking light mouth is new first line of a couplet light mouth.The physics control word that belongs to this RRU processing for example can be that this RRU is treated to legal physics control word; The physics control word that does not belong to this RRU processing for example can be that this RRU is treated to illegal physics control word.

● the said optical fiber that breaks down is uplink optical fibers:

The RRU of level carries out the step that clock switches and comprises behind the said fault optical fiber:

After troubleshooting finished, the back level RRU of fault optical fiber and the second light mouth of BBU had carried out after the link re-establishment, and the method for fault recovery comprises:

Step 1, BBU issue the first physics control word from the second light mouth after knowing that said fiber failure recovers, the RRU that has carried out link re-establishment when the said fiber failure with indication carries out clock and switches;

Particularly, the be configured to said second light mouth of BBU before according to said fiber failure disposes the first physics control word, sends the first physics control word from the second light mouth;

After the RRU that when fiber failure, has carried out link re-establishment is receiving the first physics control word, judge that the first physics control word for not belonging to the physics control word that this RRU handles, carries out clock and switch.

Step 2, BBU issue the second physics control word from the first light mouth, to indicate the said salty new link setup of first light that has carried out the RRU of clock switching from present clock locking light mouth and said BBU.

Particularly, BBU is configured to the said first smooth outlet structure second physics control word before according to said fiber failure, and sends the second physics control word from the first light mouth;

When fiber failure, carried out link re-establishment; And carried out RRU that clock switches after receive the second physics control word according to the first physics control word; Judge that the second physics control word is to belong to the physics control word that this RRU handles, and then locks the salty new link setup of first light of light mouth and said BBU from present clock.

Hereinafter will combine accompanying drawing that embodiments of the invention are elaborated.Need to prove that under the situation of not conflicting, embodiment among the application and the characteristic among the embodiment be combination in any each other.

At first introduce the related looped network framework of the embodiment of the invention below.As shown in Figure 1; Comprise BBU and some RRU in the looped network, wherein some RRU are linked in sequence step by step and form a RRU chain, and an end RRU of this RRU chain links to each other with the Yi Guangkou (key light mouth) of BBU; Other end RRU links to each other with another light mouth (being equipped with the light mouth) of BBU, and this BBU and RRU connect into a circulus.The RRU that links to each other with the key light mouth of BBU can be described as chopped-off head RRU, and the RRU that links to each other with the light mouth fully of BBU can be described as final stage RRU.Key light mouth direction is the prime direction, and being equipped with light mouth direction is back level direction.

The light mouth of RRU and BBU link setup is the first line of a couplet light mouth of RRU, and another last non-link setup light mouth of RRU is a second line of a couplet light mouth.Usually RRU obtains clock from first line of a couplet light mouth.

Embodiment 1

Present embodiment is described the fault handling method of the downlink optical fiber of RRU first line of a couplet light mouth, and is as shown in Figure 2, comprising:

Step 1, the downlink optical fiber of certain RRU first line of a couplet light mouth breaks down, and this RRU detects the LOP alarm;

Step 2, this RRU that detects LOP alarm changes from second line of a couplet light mouth and obtains clock, and the data that stop current first line of a couplet light mouth send, and perhaps stops the data transmission of current first line of a couplet light mouth and second line of a couplet light mouth;

Particularly, when this RRU that detects the LOP alarm was final stage RRU, it only closed the transmission optical fiber of current first line of a couplet light mouth; When this RRU that detects LOP alarm was non-final stage RRU, its data of closing current first line of a couplet light mouth and second line of a couplet light mouth were sent, and promptly close two transmission optical fiber.Usually, only need close the sending direction of black out mouth, receive direction need not closed.

This RRU closes the purpose of sending optical fiber and is: for the higher level RRU of this RRU, close send optical fiber after, higher level RRU can detect the LOP alarm, higher level RRU can report step by step, finally makes BBU know the LOP alarm; For the RRU of subordinate of this RRU, close optical fiber after, make the RRU of subordinate that clock is switched to another light mouth, promptly change from another light mouth and obtain clock, so that from the other direction link setup.

What is called changes to be obtained clock from another light mouth and is meant, changes the light mouth and the locking of obtaining clock, for example obtains clock from light mouth 1 originally, after the switching, then locks from light mouth 0 and obtains clock.

Step 3, this higher level RRU of RRU that detects the LOP alarm reports the LOP alarm to higher level RRU, up to reporting to BBU step by step after detecting the LOP alarm in the looped network;

These all RRU of subordinate that detect the RRU of LOP alarm carry out following steps step by step in the step 4, looped network:

A, the downlink optical fiber that detects its first line of a couplet light mouth are closed the LOP alarm that causes, and change from another light mouth and obtain clock;

B, judge whether this RRU is final stage RRU, if, then close the transmission optical fiber of first line of a couplet light mouth, if not, then close the transmission optical fiber of upper and lower light mouth.

Because the hardware of RRU does not have the clock hold facility, so need RRU after detecting light mouth LOP alarm, to switch clock rapidly to another one light mouth.

Above-mentioned steps three does not have fixedly sequencing with step 4.

Step 5, BBU carries out the internal resource information switching after knowing light mouth LOP alarm, sends the physics control word from another light mouth RRU to looped network that does not receive the LOP alarm, and indication RRU carries out link re-establishment;

The physics control word that BBU never receives the light mouth transmission of LOP alarm comprises: the identification information of the first RRU that is connected with current light mouth; The RRU range information of current light mouth control, from the key light mouth to the transmission direction information that is equipped with the light mouth; Particularly, available following formula is represented:

First RRU sign (Start RRU ID)=current light mouth of the BBU light slogan * 16+1 that is connected with current light mouth;

Link indication (Link Ind) is a transmission direction information, can represent to fail to being equipped with the light oral instructions from the key light mouth for adding 1 like Link Ind, and Link Ind can represent to fail to the key light oral instructions from being equipped with the light mouth for subtracting 1;

If the current light mouth of BBU is the key light mouth, RRU scope (RRU the IDRANGE)=Start RRU ID+MainRruNum-1 of then current light mouth control, wherein MainRruNum is the RRU number of key light mouth control; If the current light mouth of BBU is to be equipped with the light mouth, RRU scope (RRU ID the RANGE)=Start RRU ID+1-SlaveRruNum of then current light mouth control, wherein SlaveRruNum is for being equipped with the RRU number that the light mouth is controlled.

All RRU on the RRU of the current light mouth control of BBU comprises from the current light mouth of BBU to this section link of fault optical fiber, particularly, the RRU of key light mouth control comprises all RRU of fault optical fiber prime; The RRU that is equipped with the control of light mouth comprises all RRU of level behind the fault optical fiber.

According to the regulation in the standard, the RRU sign is made up of 8 bits, and wherein high 4 is BBU light slogan, and low four is the progression of RRU.Usually, RRU has 15 grades at most, and the progression of the first RRU that is connected with the key light mouth (being chopped-off head RRU) is 1, is 15 with the progression that is equipped with the first RRU (being final stage RRU) that the light mouth is connected.Be that unit calculates with the decimal system in the above-mentioned formula.

Step 6, the RRU that has carried out the clock switching in the looped network can receive the physics control word that BBU sends, and judges whether the physics control word belongs to this RRU and handle (whether legal), if, execution in step seven, if not, then flow process finishes;

If judging according to the physics control word that receives, RRU meets the following conditions; Think that then this physics control word belongs to this RRU and handles (for example can think that this physics control word is legal): current RRU belongs to the RRU scope of key light mouth control, and the transmission direction information representation is defeated to being equipped with the light oral instructions from the key light mouth; Perhaps, current RRU belongs to the RRU scope of light mouth control fully, and the transmission direction information representation is defeated to the key light oral instructions from being equipped with the light mouth.

For example: Link Ind is for adding 1, and current RRU sign (RRU ID)≤key light mouth RRU IDRANGE; Perhaps, Link Ind is for subtracting 1, and current RRU ID>=be equipped with light mouth RRU ID RANGE.

If RRU judges that the physics control word that receives belongs to this RRU and handles, confirm that then this light mouth that receives the physics control word is a first line of a couplet light mouth, RRU will be through this first line of a couplet light mouth and BBU link re-establishment.

Step 7, carried out clock in the looped network and switched and receive the RRU that belongs to the physics control word that this RRU handles and carry out following process of reconstruction:

M, judge whether to close transmission optical fiber, if, then open the transmission optical fiber of closing, execution in step N, if not, direct execution in step N then;

N, send the salty new link setup of light of physics control word through current light mouth that obtains clock and BBU.

Each RRU that detects legal physics control word all carries out above-mentioned flow process, accomplishes up to those RRU link re-establishments.After the link re-establishment, the current and light mouth BBU link setup is the new first line of a couplet light mouth of this RRU, and another light mouth is new second line of a couplet light mouth.

The higher level RRU of the RRU of the first LOP of detecting alarm does not carry out link re-establishment, because the link between those RRU and the BBU is intact.

Can find out to have only the clock of completion to switch and link switchover from above-mentioned steps, RRU switches just to calculate and accomplishes." switching " described herein is identical with the implication of " switching ".

Applying examples

This example is the downlink optical fiber Fault Processing method of example explanation RRU first line of a couplet light mouth with looped network shown in Figure 3, and Initial R RU1, RRU2, RRU3 be from BBU light mouth 0 link setup, and when downlink optical fiber 3 faults of RRU2 first line of a couplet light mouth 0, processing method comprises:

Step 110, RRU2 detects the LOP alarm;

Behind the fiber failure, luminous power can be reduced to the degree that can not transmit information, and at this moment RRU2 will write down alarm, for example can be accomplished by the FPGA among the RRU2 (Field-Programmable Gate Array, field programmable gate array).

Step 120, RRU2 changes by second line of a couplet light mouth 1 and obtains clock, closes simultaneously and sends optical fiber 4 and send optical fiber 5;

Step 130, because RRU2 sends closing of optical fiber 4, RRU1 detects the LOP alarm of second line of a couplet light mouth light mouth 1, and with this LOP alarm notification BBU;

Because RRU1 first line of a couplet light mouth is normal, it need not to carry out clock and switches.

Step 140, because RRU2 sends closing of optical fiber 5, RRU3 detects the LOP alarm of first line of a couplet light mouth 0, RRU3 switches to light mouth 1 with clock from original light mouth 0, promptly changes by light mouth 1 and obtains clock;

Because RRU3 is afterbody, so after it detects the LOP alarm, it is fine 7 to have nothing to do with black out, only closes optical fiber 6, the transmission optical fiber of promptly current first line of a couplet light mouth.

This step does not have fixedly precedence relationship with step 130;

Step 150, BBU begins the internal resource information switching, and issues the physics control word through BBU light mouth 1, and this physics control word is used to indicate RRU to carry out link switchover, promptly from other direction and BBU link re-establishment;

Step 160 after RRU3 receives the physics control word, after judging that this physics control word is legal, through light mouth 1 and BBU link setup, and is opened the transmission optical fiber 6 of before having closed;

Step 170; RRU2 receives the physics control word that BBU sends through receiving optical fiber 6, detects the legitimacy of this physics control word, if legal; Then open the transmission optical fiber 4 and transmission optical fiber 5 of closing; Through light mouth 1 again with the BBU link setup, if illegal, continue to detect wait for till legal or process ends;

In the present embodiment, RRU2 and RRU3 accomplish the link re-establishment with BBU light mouth 1, and RRU1 is unaffected.

Embodiment 2

Present embodiment is described the fault handling method of the uplink optical fibers of RRU first line of a couplet light mouth, and is as shown in Figure 4, comprising:

Step 1: the uplink optical fibers of the first line of a couplet light mouth of certain RRU breaks down, and the higher level RRU of this RRU detects the LOP alarm, and gives BBU with this LOP alarm report;

RRU and BBU can only detect the alarm of receive direction.

The downlink optical fiber of the first line of a couplet light mouth of this RRU is normal, and its clock still can be locked in first line of a couplet light mouth.

Step 2, after BBU receives alarm, from the light mouth (like light mouth 0) that receives LOP alarm backward a level RRU send the first physics control word;

Since after BBU receives alarm, the RRU (all RRU of level behind the fault optical fiber) that will recomputate the RRU (all RRU of fault optical fiber prime) of key light mouth control and be equipped with the control of light mouth.Therefore; All RRU of fault optical fiber prime will judge that the first physics control word that its BBU key light mouth that receives sends is legal physics control word, and all RRU of level will judge that the first physics control word that its BBU key light mouth that receives sends is illegal physics control word behind the fault optical fiber.The purpose of sending this first physics control word is, makes behind the fault optical fiber RRU of level carry out clock and switches.

The content of the first physics control word and a last embodiment are similar in the present embodiment, comprising:

If light mouth 0 is the key light mouth; Then the physics control word of its transmission comprises: the identification information of the first RRU that is connected with the key light mouth; The RRU range information of key light mouth control, from the key light mouth to the transmission direction information that is equipped with the light mouth; Particularly, available following formula is represented: first RRU sign (Start RRU the ID)=BBU key light mouth light slogan * 16+1 that is connected with the key light mouth; RRU scope (RRUID the RANGE)=Start RRU ID+MainRruNum-1 of key light mouth control; Link indication (Link Ind) is that transmission direction information is for adding 1;

If light mouth 0 is to be equipped with the light mouth; Then the physics control word of its transmission comprises: with the identification information that is equipped with the first RRU that the light mouth is connected; Be equipped with the RRU range information of light mouth control, from being equipped with the transmission direction information of light mouth to the key light mouth; Particularly, available following formula is represented: be equipped with first RRU that the light mouth is connected and identify (Start RRU ID)=BBU and be equipped with the total progression of RRU in the light mouth light slogan * 16+ looped network (for example 15); RRU scope (RRU ID the RANGE)=Start RRU ID+1-SlaveRruNum that is equipped with the control of light mouth; Link indication (Link Ind) is that transmission direction information is for subtracting 1.

Step 3 after the back level RRU of fault optical fiber receives illegal physics control word, is carried out clock and is switched, and clock is switched to another light mouth from current light mouth;

Step 4, BBU carries out the internal resource information switching, sends the second physics control word from another light mouth (like light mouth 1) that does not receive the LOP alarm, and indication RRU carries out link re-establishment;

The form of the second physics control word is with the first physics control word.

Have only the RRU of level behind the fault optical fiber can judge that just the second physics control word that its BBU that receives sends from light mouth 1 is to belong to the physics control word that this RRU handles.

The order of above step 3 and step 4 does not limit, can first execution in step four, and execution in step three again.

Step 5 receives the RRU of the second legal physics control word, from the light mouth and the BBU link setup of current locked clock.

Link setup is from fault optical fiber back level RRU farthest at first.

Applying examples

This example is the uplink optical fibers Fault Processing method of example explanation RRU first line of a couplet light mouth with looped network shown in Figure 5, and Initial R RU1, RRU2, RRU3 be from BBU light mouth 0 link setup, and when uplink optical fibers 4 faults of RRU2 first line of a couplet light mouth 0, processing method comprises:

Step 210, the uplink optical fibers 4 that prime RRU1 detects RRU1 second line of a couplet light mouth 1 has the LOP alarm, reports BBU through optical fiber 2;

Step 220 after BBU receives alarm, issue the first physics control word to RRU1, RRU2 and RRU3 through optical fiber 1, optical fiber 3, optical fiber 5 under 0 connection of light mouth, and this BBU issues the second physics control word through light mouth 1;

Step 230 after RRU3 receives the first physics control word from light mouth 0, after judging that this physics control word is illegal, is carried out clock and is switched, and changes from light mouth 1 and obtains clock; After light mouth 1 is received the second physics control word, after judging that this second physics control word is legal, the beginning link switchover, promptly the light mouth 1 at light mouth 1 and BBU passes through optical fiber 7 and optical fiber 8 link re-establishments;

Step 240 after RRU2 receives the first physics control word from light mouth 0, after judging that this physics control word is illegal, is carried out clock and is switched, and changes from light mouth 1 and obtains clock; After light mouth 1 was received the second legal physics control word, the light mouth 1 of RRU2 was through optical fiber 5 and light mouth 1 link setup of optical fiber 6 with BBU.

Embodiment 3

Present embodiment is described fiber failure and recovered processing method, and is as shown in Figure 6, comprising:

After fiber failure recovered, the RRU that takes place or switch when BBU issues the physics control word to fault from two light mouths respectively instructed those RRU to restPose.Comprise:

Step 1: BBU is known the uplink optical fibers LOP alarm clearing of certain RRU first line of a couplet light mouth;

Possibly be that BBU oneself detects, or higher level RRU detects the uplink optical fibers LOP alarm clearing of the RRU of its subordinate first line of a couplet light mouth, the LOP alarm clearing is reported BBU.

BBU knows that the light mouth of alarm clearing is relevant with the transmission direction of fault optical fiber, if the fault recovery of the optical fiber 3 among the embodiment 1, then the light mouth 1 by BBU detects; If the fault recovery of the optical fiber 4 among the embodiment 2, then the light mouth 0 by BBU detects.

After step 2: BBU receives the notice of alarm clearing, issue the first physics control word from former link setup light mouth, on another light mouth, issue terrium quid reason control word according to the configuration before the fiber failure;

The physics control word that BBU issues at this moment is that the number of the RRU that controlled according to the light mouth of this physics control word of current transmission is constructed, can be referring to the physics control word format among the embodiment 1.

Step 3: the RRU that receives the second physics control word carries out clock switch, obtains clock from another light mouth;

Step 4: the RRU that has carried out clock switch receives the first physics control word from the current light mouth that obtains clock, from this light mouth and BBU link re-establishment.

That switch at first is higher level RRU; That switch at last is final stage RRU.

Applying examples

This example is the processing method of example explanation RRU light mouth fault recovery with looped network shown in Figure 7; Initial R RU1, RRU2, RRU3 are from BBU light mouth 0 link setup; Behind the reception optical fiber 3 or transmission optical fiber 4 faults of RRU2 light mouth 0; RRU2 and RRU3 are through the light mouth 1 and BBU link re-establishment of BBU, and after optical fiber 3 or optical fiber 4 fault recoveries, processing method comprises:

Step 310, BBU is known optical fiber 3 or optical fiber 4 alarm clearing;

During optical fiber 3 fault recoveries, alarm clearing is reported BBU by RRU2; During optical fiber 4 fault recoveries, alarm clearing is reported BBU by RRU1.

Step 320, BBU issues physics control word 1 to RRU3 and RRU2 through light mouth 1;

Step 330 after RRU3 receives physics control word 1, judges that this physics control word is illegal, then carries out clock and switches, and changes from light mouth 0 and obtains clock;

Step 340 after RRU2 receives physics control word 1, judges that this physics control word is illegal, then carries out clock and switches, and changes from light mouth 0 and obtains clock;

Step 350, BBU issues physics control word 2 through light mouth 0;

Step 360, RRU2 receives this physics control word 2 at first, after judging that this physics control word is legal, begins to carry out link switchover, at the light mouth 0 of light mouth 0 and BBU through optical fiber 3 and optical fiber 4 link re-establishments;

Step 370, RRU3 receives this physics control word 2, after judging that this physics control word is legal, from light mouth 0 link setup of light mouth 0 through optical fiber 5 and optical fiber 6 and BBU.

In this example, RRU1 is unaffected.

Embodiment 4

Present embodiment is described the RRU that is used to carry out troubleshooting in the annular networking mode, and it comprises first module, Unit second and Unit the 3rd, wherein:

Preferably, said first module comprises modules A and module B, wherein:

Embodiment 5

Present embodiment is described the BBU that is used to carry out troubleshooting in the annular networking mode, comprising: it comprises first module and Unit second, wherein:

Embodiment 6

RRU and BBU among embodiment 4 and the embodiment 5 can form a fault processing system under the annular networking mode jointly, comprising: be positioned at first device of RRU and be positioned at second of BBU and install, wherein:

Said first device is used for when looped network optical fiber breaks down and touch light outlets LOP alarm, and control RRU carries out clock and switches, and is used for after the first physics control word that receives said BBU transmission, with said BBU link re-establishment;

Unit and module that unit that comprises in first device and module comprise referring to RRU among the embodiment 4; The unit that comprises in second device repeats no more referring to the unit that BBU among the embodiment 5 comprises here.

One of ordinary skill in the art will appreciate that all or part of step in the said method can instruct related hardware to accomplish through program, said program can be stored in the computer-readable recording medium, like read-only memory, disk or CD etc.Alternatively, all or part of step of the foregoing description also can use one or more integrated circuits to realize.Correspondingly, each the module/unit in the foregoing description can adopt the form of hardware to realize, also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.

Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.

Claims

1. the fault handling method under the annular networking mode comprises:

2. the method for claim 1 is characterized in that:

The said optical fiber that breaks down is downlink optical fiber;

3. the method for claim 1 is characterized in that:

The said optical fiber that breaks down is downlink optical fiber, and BBU knows that through the first light mouth step of light mouth LOP alarm comprises:

4. like claim 2 or 3 described methods, it is characterized in that:

Said BBU has carried out the RRU that clock switches through the second light mouth and has sent the first physics control word in looped network, comprise with the step of the salty new link setup of second light of indicating said RRU and BBU:

5. the method for claim 1 is characterized in that:

The said optical fiber that breaks down is uplink optical fibers, and said BBU knows that through the first light mouth step of light mouth LOP alarm comprises:

6. method as claimed in claim 5 is characterized in that:

The said optical fiber that breaks down is uplink optical fibers, and the RRU of level carries out the step that clock switches and comprises behind the said fault optical fiber:

7. like claim 5 or 6 described methods, it is characterized in that:

8. like the described method of arbitrary claim among claim 1-3, the 5-6, it is characterized in that:

Said BBU is after knowing that fiber failure recovers; According to the reason of the arrangement tertium quid before fiber failure control word; And issue from the second light mouth; After the RRU that when said fiber failure, has carried out link re-establishment is receiving tertium quid reason control word, judge that said tertium quid reason control word for not belonging to the physics control word that this RRU handles, carries out clock and switch;

9. the fault recovery method under the annular networking mode, during certain fiber failure, the back level remote radio unit (RRU) (RRU) of fault optical fiber has carried out link re-establishment with the second light mouth of baseband processing unit (BBU) in the looped network, and said method comprises:

10. method as claimed in claim 9 is characterized in that:

Said BBU issues the first physics control word from the second light mouth, and the RRU that has carried out link re-establishment when the said fiber failure with indication carries out the step that clock switches and comprises:

11. method as claimed in claim 9 is characterized in that:

Said BBU issues the second physics control word from the first light mouth, comprises from the step that present clock locks the salty new link setup of first light of light mouth and said BBU to indicate the said RRU that has carried out the clock switching.

12. the fault processing system under the annular networking mode comprises: be positioned at first device of remote radio unit (RRU) (RRU) and be positioned at second device of baseband processing unit (BBU), wherein:

13. system as claimed in claim 12 is characterized in that, said first device comprises first module, Unit second and Unit the 3rd, wherein:

14. system as claimed in claim 13 is characterized in that, said first module comprises modules A and module B, wherein:

15. system as claimed in claim 13 is characterized in that,

Said first device also comprises Unit the 4th, and it is used for current RRU receives the physics control word that does not belong to this RRU processing from current first line of a couplet light mouth after, controls current RRU and carries out the clock switching; After carrying out the clock switching, after current RRU receives the physics control word that belongs to this RRU processing from present clock locking light mouth, control the light salty new link setup of current RRU from this physics control word of transmission of present clock locking light mouth and BBU.

16., it is characterized in that said second device comprises like the described system of arbitrary claim among the claim 12-15: unit I and unit II, wherein:

17. system as claimed in claim 16; It is characterized in that; Said second device comprises: unit III, and it is used for: after know that fiber failure recovers, according to the RRU number structure tertium quid reason control word of the second light mouth control of disposing before the fiber failure; And, make the RRU of non-second light mouth control carry out the clock switching from said second light mouth transmission; And be used for constructing the 4th physics control word according to the RRU number of the first light mouth control of disposing before the fiber failure, and send from the said first light mouth, make said carried out RRU and the salty new link setup of said first light that clock switches.

18. the remote radio unit (RRU) (RRU) in the annular networking mode comprises first module, Unit second and Unit the 3rd, wherein:

19. RRU as claimed in claim 18 is characterized in that: said first module comprises modules A and module B, wherein:

20. RRU as claimed in claim 18 is characterized in that:

Said RRU also comprises Unit the 4th, and it is used for current RRU receives the physics control word that does not belong to this RRU processing from current first line of a couplet light mouth after, controls current RRU and carries out the clock switching; After carrying out the clock switching, after current RRU receives the physics control word that belongs to this RRU processing from present clock locking light mouth, control current RRU and send the salty new link setup of light of physics control word from present clock locking light mouth and BBU.

21. the baseband processing unit (BBU) in the annular networking mode comprising: first module, Unit second, wherein:

22. BBU as claimed in claim 21; It is characterized in that; Said BBU also comprises: Unit the 3rd, and it is used for: after know that fiber failure recovers, according to the RRU number structure tertium quid reason control word of the second light mouth control of disposing before the fiber failure; And, make the RRU of non-second light mouth control carry out the clock switching from said second light mouth transmission; And be used for constructing the 4th physics control word according to the RRU number of the first light mouth control of disposing before the fiber failure, and send from the said first light mouth, make said carried out RRU and the salty new link setup of said first light that clock switches.