CN102811088B - Looped network reverse method under remote radio pattern and system - Google Patents
Looped network reverse method under remote radio pattern and system Download PDFInfo
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- CN102811088B CN102811088B CN201110145244.5A CN201110145244A CN102811088B CN 102811088 B CN102811088 B CN 102811088B CN 201110145244 A CN201110145244 A CN 201110145244A CN 102811088 B CN102811088 B CN 102811088B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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Abstract
The invention discloses the looped network reverse method under a kind of remote radio pattern and system, wherein, the method includes: the link of looped network is carried out breaking point detection by Base Band Unit (BBU), obtain the testing result information of link, determine link generation chain rupture, wherein, testing result information includes: the positional information of the breakpoint of chain rupture occurs；BBU is according to testing result information, and the master slave mode obtaining each Remote Radio Unit (RRU) on link controls information, and the master slave mode control information of each RRU is handed down to each RRU；Whether each RRU judges that its master slave mode controls information respectively legal, if legal, then RRU carries out clock switch.By the present invention, when annular networking generation link breakpoint, the RRU in breakpoint downstream can switch clock in time, so that the business of annular networking is recovered rapidly, improves the service reliability of annular networking.
Description
Technical field
The present invention relates to the communications field, in particular to the looped network reverse method under a kind of remote radio pattern and system.
Background technology
In the face of the mobile data services demand that currently grows with each passing day, mobile communications operators are just urgent attempts disposing a big capacity, wide cover, the communication network of high reliability, to promote the market competitiveness of self.Simultaneously, along with 2G, 3G even the fusion evolution of 4G technology, multimode BBU (BasebandUnit, Base Band Unit)+RRU (RadioRemoteUnit, Remote Radio Unit) distributed base station solution necessarily becomes a kind of main trend in networking solution, and this building net plan can provide more flexibly for operator, more efficient mobile communication network.
If meeting Large Copacity, the wide networking demand covered, multimode BBU+RRU distributed base station solution needs to improve the carrier processing ability (spread bandwidth) of unit RRU, also need to increase the RRU cascade progression zoomed out simultaneously, but meanwhile, also can introduce the integrity problem of the network operation.Such as, under the networking scene of the unidirectional cascade of multiple RRU, itself break down once the middle optical fiber of certain grade of RRU, optical module or RRU module, then the RRU communication in the business downstream of this grade of RRU is also subjected to impact, cause volume of business to decline, even produce the problems such as downstream links is irrecoverable.As can be seen here, the networking of the unidirectional cascade of multiple RRU easily causes the problem of downstream RRU service disconnection when certain grade of middle physical connection occurs and interrupts, and the operational reliability of network is relatively low.
For the problems referred to above in correlation technique, effective solution is not yet proposed at present.
Summary of the invention
Present invention is primarily targeted at the looped network reverse method under a kind of remote radio pattern of offer and system, at least to solve one of the problems referred to above.
According to an aspect of the present invention, provide the looped network reverse method under a kind of remote radio pattern, including: the link of looped network is carried out breaking point detection by Base Band Unit (BBU), obtain the testing result information of link, determine link generation chain rupture, wherein, testing result information includes: the positional information of the breakpoint of chain rupture occurs；BBU is according to testing result information, and the master slave mode obtaining each Remote Radio Unit (RRU) on link controls information, and the master slave mode control information of each RRU is handed down to each RRU；Whether each RRU judges that its master slave mode controls information respectively legal, if legal, then RRU carries out clock switch.
Link is carried out breaking point detection by above-mentioned BBU, obtain the testing result information of link, including: BBU issues serial loop cycle tests along principal direction and standby direction to each RRU respectively parallel by two light mouths of composition looped network thereon, wherein, serial loop cycle tests principal direction and standby direction issued differs；Each RRU receives the serial loop cycle tests issued along principal direction and standby direction respectively, and using the serial loop cycle tests that receives as feedback sequence, along the path receiving serial loop cycle tests, feedback sequence is returned to BBU；Each RRU feedback sequence returned along principal direction and standby direction respectively is verified by BBU, obtains each RRU testing result information along principal direction and standby direction.
Above-mentioned BBU is according to testing result information, the master slave mode control information obtaining each radio frequency remote unit RRU on link includes: for each RRU, BBU is according to this RRU testing result information along principal direction and standby direction, obtain this RRU and control information and the master slave mode control information in standby direction at the master slave mode of principal direction, wherein, control information at the master slave mode of principal direction and control information mutual exclusion with the master slave mode in standby direction.
The master slave mode control information of each RRU is handed down to each RRU and includes by above-mentioned BBU: for each RRU, BBU issues this RRU along principal direction to RRU by one of two light mouths thereon and controls information at the master slave mode of principal direction, issues this RRU master slave mode in standby direction for direction to RRU by another light opening's edge in two light mouths thereon and controls information.
Whether each RRU judges that its master slave mode controls information respectively legal, if legal, then RRU carries out clock switch, including: each RRU, RRU are judged at the light mouth of principal direction and whether existence alerts at the light mouth for direction for it；If it is determined that being all absent from state alarm, and RRU is identical with the master slave mode control information along standby direction along the master slave mode control information of principal direction, it is determined that it is illegal that the master slave mode of RRU controls information, and RRU does not carry out clock switching；If it is determined that be all absent from state alarm, and RRU controls information differ along the master slave mode control information of principal direction and the master slave mode in standby direction, edge, determine that the master slave mode control information of RRU is legal, the master slave mode that its clock source is switched to along principal direction by RRU controls information and controls the light mouth recovered clock in direction, information place along the master slave mode control information for direction for the master slave mode of predetermined value, wherein, predetermined value instruction holotype；If it is determined that the light mouth existence alarm on one of them direction, light mouth on another direction is absent from state alarm and this RRU master slave mode control information in the direction is predetermined value, then its clock source is switched to the light mouth recovery time on the direction being absent from state alarm by RRU, if RRU is not predetermined value along the master slave mode control information in the direction being absent from state alarm, then its clock source is switched to local clock by RRU；If all existence alarms, then its clock source is switched to local clock by RRU.
After above-mentioned RRU carries out clock switch, the method also includes: according to the direction of clock switch, the bottom data stream of switching RRU.
After RRU carries out clock switch, the method also includes: the link of looped network is carried out breaking point detection by BBU, knows that breakpoint recovers link and connects；BBU adjusts the master slave mode of each RRU and controls information, and the master slave mode control information of each RRU after adjustment is handed down to each RRU respectively corresponding；Each RRU judges that whether the master slave mode control information after its adjustment is legal, and determines whether to carry out clock switch according to judged result.
According to a further aspect in the invention, provide the looped network exchanging system under a kind of remote radio pattern, including: Base Band Unit (BBU) and Remote Radio Unit (RRU), wherein, BBU includes: detection module, for the link of looped network is carried out breaking point detection, obtains the testing result information of link, wherein, testing result information includes: the positional information of the breakpoint of chain rupture occurs；According to testing result information, first judge module, for judging whether link chain rupture occurs；Acquisition module, for when judging link generation chain rupture, according to testing result information, the master slave mode obtaining each radio frequency remote unit RRU on link controls information；Sending module, is handed down to each RRU corresponding respectively for the master slave mode of each RRU controls information；RRU includes: the second judge module, whether legal is used for judging that its main master slave mode controls information；Switch module, for when the master slave mode control information of RRU is legal, carrying out clock switch.
Above-mentioned sending module is additionally operable to two light mouths by the composition looped network on BBU and issues serial loop cycle tests along principal direction and standby direction parallel to each RRU respectively, and wherein, principal direction and the serial loop cycle tests issued on standby direction differ；Detection module, for verifying according to each RRU feedback sequence returned along principal direction and standby direction respectively, obtains each RRU testing result information along principal direction and standby direction.
Above-mentioned module of switching is additionally operable to the bottom data stream of switching RRU.
By the present invention, adopt annular networking switching technique, solve the problem causing RRU service disconnection in prior art owing to sending link breakpoint in annular networking, and then improve the reliability of the network operation.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, and the schematic description and description of the present invention is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of the looped network reverse method under remote radio pattern according to embodiments of the present invention；
Fig. 2 is that Loop-test sequence according to embodiments of the present invention sends and returns slotting schematic diagram of mechanism；
Fig. 3 is the control rule schematic diagram controlling information of RRU-MS according to embodiments of the present invention；
Fig. 4 is RRU clock competition switching control schematic diagram according to embodiments of the present invention；
Fig. 5 is that looped network according to embodiments of the present invention switches overall flow schematic diagram；
Fig. 6 is that looped network according to embodiments of the present invention switches the overall demonstration graph of example；
Fig. 7 A is the properly functioning schematic diagram that looped network according to embodiments of the present invention switches example；
Fig. 7 B is control schematic diagram when switching example normal of the looped network according to embodiments of the present invention；
Fig. 8 A is the A point chain rupture schematic diagram that looped network according to embodiments of the present invention switches example；
Fig. 8 B be looped network according to embodiments of the present invention switch example A point chain rupture time control schematic diagram；
Fig. 9 A is that looped network according to embodiments of the present invention is switched the A point subordinate RRU of example and switched schematic diagram；
Fig. 9 B is the control schematic diagram that looped network according to embodiments of the present invention switches when the A point subordinate RRU of example switches；
Figure 10 A is the B point chain rupture schematic diagram that looped network according to embodiments of the present invention switches example；
Figure 10 B be looped network according to embodiments of the present invention switch example B point chain rupture time control schematic diagram；
Figure 11 A is that looped network according to embodiments of the present invention is switched the B point subordinate RRU of example and switched schematic diagram；
Figure 11 B is the control schematic diagram that looped network according to embodiments of the present invention switches when the B point subordinate RRU of example switches；
Figure 12 A is the B point broken chain restoring schematic diagram that looped network according to embodiments of the present invention switches example；
Figure 12 B be looped network according to embodiments of the present invention switch example B point broken chain restoring time control schematic diagram；
Figure 12 C is the A point broken chain restoring schematic diagram that looped network according to embodiments of the present invention switches example；
Figure 12 D be looped network according to embodiments of the present invention switch example A point broken chain restoring time control schematic diagram；
Figure 13 A is the B recovery adjustment schematic diagram that looped network according to embodiments of the present invention switches example；
Figure 13 B be looped network according to embodiments of the present invention switch example B recover adjust time control schematic diagram；
Figure 13 C is the A recovery adjustment schematic diagram that looped network according to embodiments of the present invention switches example；
Figure 13 D be looped network according to embodiments of the present invention switch example A recover adjust time control schematic diagram；
Figure 14 A is the A point broken chain restoring schematic diagram that looped network according to embodiments of the present invention switches example；
Figure 14 B be looped network according to embodiments of the present invention switch example A point broken chain restoring time control schematic diagram；
Figure 14 C is the B point broken chain restoring schematic diagram that looped network according to embodiments of the present invention switches example；
Figure 14 D be looped network according to embodiments of the present invention switch example B point broken chain restoring time control schematic diagram；
Figure 15 A is the link breakpoint recovery schematic diagram that looped network according to embodiments of the present invention switches example；
Figure 15 B be looped network according to embodiments of the present invention switch example link breakpoint recover time control schematic diagram；
Figure 15 C be looped network according to embodiments of the present invention switch example link breakpoint recover switch schematic diagram；
Figure 15 D is that looped network according to embodiments of the present invention is switched the link breakpoint of example and recovered control schematic diagram when switching；
Figure 16 is the structural representation of the looped network exchanging system under remote radio pattern according to embodiments of the present invention.
Detailed description of the invention
Below with reference to accompanying drawing and describe the present invention in detail in conjunction with the embodiments.It should be noted that when not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.
The flow chart of the looped network reverse method under Fig. 1 remote radio pattern according to embodiments of the present invention, the method mainly includes the following steps that (step S102-step S106):
Step S102, the link of looped network is carried out breaking point detection by Base Band Unit (BBU), obtains the testing result information of link, it is determined that link generation chain rupture, and wherein, testing result information includes: the positional information of the breakpoint of chain rupture occurs；
In a preferred implementation of the embodiment of the present invention, annular link breaking point detection may include that returning of serial loop cycle tests (Loop-test) is inserted and RRU is returned serial loop cycle tests (Loop-test) after inserting and verifies by BBU, and judged the accurate location of annular link breakpoint with this by the transmission of serial loop cycle tests (Loop-test), RRU.Such as, in embodiments of the present invention, BBU can issue serial loop cycle tests (Loop-test) along principal direction and standby direction to each RRU respectively parallel by two light mouths of composition looped network thereon, wherein, serial loop cycle tests principal direction and standby direction issued differs；Each RRU receives the serial loop cycle tests issued along principal direction and standby direction respectively, and using the serial loop cycle tests that receives as feedback sequence, along the path receiving serial loop cycle tests, feedback sequence is returned to BBU.After BBU receives each RRU feedback sequence returned, each RRU feedback sequence returned along principal direction and standby direction respectively is verified, obtains each RRU testing result information along principal direction and standby direction.
Such as, Fig. 2 is that Loop-test sequence according to embodiments of the present invention sends and returns slotting schematic diagram of mechanism, as shown in Figure 2, in a preferred implementation of the embodiment of the present invention, each RRU all has a RRU label (RRU-Index), and wherein, in principal direction, RRU-Index is from 0, it is incremented by 1 successively, till being incremented to N；And for RRU-Index on direction from N, successively decrease 1 successively, till being decremented to 0 (N deducts 1 equal to hung RRU quantity summation in annular link), in this way it can be ensured that the RRU label (RRU-Index) of same RRU is unique in cyclization both direction.Wherein, in actual applications, Loop-test serial sequence generally comprises: the information such as sequence head, veneer groove, optical interface number, the RRU number that RRU label indicates will be generally greater than or equal to the RRU number of actual connection.
In a preferred implementation of the embodiment of the present invention, the link of looped network is carried out breaking point detection and may comprise steps of by BBU:
Step 1, it is (corresponding with RRU-Index that each light mouth under BBU issues Loop-test serial sequence by the control field pipelined-flash of Lower level logical link, one RRU of one bits match), namely realize the corresponding Loop-test serial sequence of a RRU；
Wherein, BBU must be unique by the Loop-test serial sequence that each light mouth under it issues, otherwise, it is easy to the problem that wrong plug disorderly causes finding breakpoint occurs back.
Step 2, RRU completes corresponding Loop-test serial sequence in both direction by Lower level logical according to its RRU-Index and returns slotting, and the Loop-test serial sequence returned after inserting is returned to BBU；
Step 3, the carrying out returning slotting Loop-test serial sequence of each light mouth RRU under it is verified by BBU by Lower level logical unification.
Step S104, BBU are according to testing result information, and the master slave mode obtaining each Remote Radio Unit (RRU) on link controls information, and the master slave mode control information of each RRU is handed down to each RRU；
In embodiments of the present invention, for each RRU, BBU can according to this RRU testing result information along principal direction and standby direction, obtain this RRU and control information and the master slave mode control information in standby direction at the master slave mode of principal direction, wherein, control information at the master slave mode of principal direction and control information mutual exclusion with the master slave mode in standby direction.
Wherein, RRU-MS controls information is calculated according to the control rule pre-set, for instance, the RRU-MS shown in Fig. 3 can be adopted to control the control rule of information, in figure 3, (1), indicating that breakpoint occurs for Loop-test:1,0 represents that link is normal；(2), controlling information for RRU-MS: same RRU, the RRU-MS that two cyclization light mouths thereon issue controls information mutual exclusion；Wherein it is possible to indicate RRU-MS to control information with 1 bit, for instance, represent holotype with " 1 ", represent from pattern with " 0 "；(3), when two corresponding for same RRU Loop-test detection all exceptions, the RRU-MS of port 0 controls the value of information and is set to 0；(4), when two corresponding for same RRU Loop-test detect normal, then the value keeping the RRU-MS control information of port 0 is constant.
In actual applications, in order to avoid RRU-MS sequence (sequence of each RRU-MS bit composition) exceptions such as acnode occurs (such as, in actual applications, front and back stages swings to light mouth 0, middle one-level then swings to light mouth 1), BBU can also preferentially judge when calculating RRU-MS and controlling information whether effective RRU-MS sequence at most only exists a trip point and there is (0 to 1 or 1 to 0), such that it is able to RRU-MS sequence to be played the effect (this sequence can be considered as there is stabilization function) of protection, on this basis, RRU-MS can be strengthened and control the stability of information.Meanwhile, in order to facilitate follow-up RRU to realize the control to clock switch, BBU can be handed down to each RRU by the link control field of two light mouths thereon.
nullSuch as，In an embodiment of the embodiment of the present invention，BBU can pass through Lower level logical and realize being uniformly controlled of the control of the master slave mode to RRU information (RRU-MS controls information)，Calculate this RRU according to RRU along the testing result information (namely RRU returns the check results of the Loop-test serial sequence after inserting by two light mouths thereon) in principal direction and standby direction including: BBU and control information and in the RRU-MS control information for direction at the RRU-MS of principal direction、BBU controls information by two light mouths thereon to the same RRU RRU-MS each issuing 1 bit，Wherein，Index (RRU-Index) the position one_to_one corresponding of the RRU that the position of every 1 bit in RRU-MS control information is corresponding respectively.
Wherein, the RRU-MS of 1 bit controls information and can indicate holotype or from pattern by predetermined value, for instance, " 1 " represents holotype, and " 0 " represents from pattern, and vice versa.
For each RRU, BBU can issue this RRU along principal direction to RRU by one of two light mouths thereon and control information at the master slave mode of principal direction, issues this RRU master slave mode in standby direction for direction to RRU by another light opening's edge in two light mouths thereon and controls information.
Whether step S106, each RRU judge that its master slave mode controls information respectively legal, if legal, then RRU carries out clock switch.
In actual applications, it is possible to arrange on RRU and switch validity judgement function, make RRU realize corresponding switching operation according to judged result, and ensure that in reversed process, business transmission is not interrupted, and volume of business is without decline.Such as, in embodiments of the present invention, each RRU is after the master slave mode control information received on principal direction and standby direction, it is possible to whether legal determining whether that master slave mode controls information, if legal, then RRU carries out clock switch.Wherein, each RRU, when judging that whether master slave mode control information is legal, includes but not limited in the following manner:
RRU judges that at the light mouth of principal direction and whether existence alerts at the light mouth for direction for it, controls information according to the master slave mode in judged result and principal direction and standby direction, it is determined whether carry out clock switch, and how to switch.Wherein:
(1) if it is determined that being all absent from state alarm, and RRU is identical with the master slave mode control information along standby direction along the master slave mode control information of principal direction, it is determined that it is illegal that the master slave mode of RRU controls information, and RRU does not carry out clock switching；
(2) if it is determined that be all absent from state alarm, and RRU controls information differ along the master slave mode control information of principal direction and the master slave mode in standby direction, edge, determining that the master slave mode of RRU controls information legal, its clock source is switched to the master slave mode along principal direction and controls to control for the master slave mode of predetermined value (this predetermined value instruction holotype) along information and the master slave mode control information along standby direction the light mouth recovered clock in direction, information place by RRU；
(3) if it is determined that the light mouth existence on one of them direction alerts, light mouth on another direction is absent from state alarm and this RRU master slave mode control information in the direction is predetermined value (this predetermined value instruction holotype), then its clock source is switched to the light mouth recovery time on the direction being absent from state alarm by RRU, if RRU is not predetermined value along the master slave mode control information in the direction being absent from state alarm, then its clock source is switched to local clock by RRU；
(4) if all existence alarms, then its clock source is switched to local clock by RRU.
Such as, as shown in Figure 4, in an embodiment of the embodiment of the present invention, RRU has clock competition switch function, this clock competition switch function specifically includes: 1, it is possible to the RRU-MS control information (namely BBU is sent to the RRU-MS control information of RRU) and the optical interface link state (LOS/LOF state) that receive according to RRU two light mouths thereon carry out clock switch validity judgement；2, complete corresponding clock switching/protection according to validity judgement result, specifically include following four processing mode:
(1) if a light mouth exists LOS/LOF alarm, and another one light mouth be absent from LOS/LOF alarm and its correspondence RRU-MS control information value be 1 (i.e. above-mentioned predetermined value, the value of instruction holotype, wherein, the master slave mode of principal direction controls the value of information in an initial condition is 1), then the clock source of hardware clock phaselocked loop is switched to the light mouth without LOS/LOF alarm recovered clock, otherwise, the clock source of hardware clock phaselocked loop is switched to local clock (freely shaking)；
(2) if two light mouths all exist LOS/LOF alarm, then the clock source of hardware clock phaselocked loop is switched to local clock (namely freely shaking)；
(3) if two light mouths all alert without LOS/LOF, and the RRU-MS of principal direction controls information and differs with the RRU-MS control information in standby direction, then RRU-MS is selected to control the light mouth recovered clock that value is 1 timing reference input as hardware clock phaselocked loop of information；
(4) if two light mouths all alert without LOS/LOF, and the RRU-MS of principal direction controls information and identical (being above-mentioned illegal state) in standby direction, then the clock source of hardware clock phaselocked loop remains unchanged (namely RRU does not carry out clock switch).
In actual applications, RRU is after carrying out clock switch, it is also possible to according to the direction of clock switch, the bottom data stream of switching RRU.
In a preferred implementation of the embodiment of the present invention, after carrying out clock switch, BBU can also continue to the link to looped network and carries out breaking point detection, to know that breakpoint recovers link and connects；If it find that link breakpoint recovers to connect, BBU then adjusts the master slave mode of each RRU and controls information (RRU-MS controls information), and the RRU-MS control information of each RRU after adjustment is handed down to each RRU respectively corresponding；After each RRU receives RRU-MS control information, whether legal first determine whether that the master slave mode after its adjustment controls information, and determine whether to carry out clock switch according to judged result.
In whole looped network switching control process; except annular link breaking point detection, the control that RRU-MS controls information and the competition of RRU clock are switched; the switching of RRU bottom data stream and protection, RRU bottom can also be included and reconfigure the delay compensation parameter of each carrier link, but the switching of RRU bottom data stream, protection can be different because taking different communications regime from reconfiguring of the delay compensation parameter to each carrier link.Needing exist for illustrating, if before switching (when namely looped network is properly functioning), the delay volume being previously-completed on the link of looped network both direction is measured and calculating, it is also possible to the business of further speeding up switches the speed of (clock switch).
Fig. 5 is the schematic flow sheet switched according to the looped network in the preferred embodiment of the present invention, as it is shown in figure 5, use the concrete steps of the looped network reverse method under the remote radio pattern of embodiment of the present invention offer to include:
Step S502, annular networking is set up, and service operation is normal；
Step S504, BBU carry out annular link breaking point detection；
The RRU-MS that step S506, BBU calculate each RRU according to the result of link breaking point detection controls information and is issued；
Step S508, RRU carry out clock switch validity judgement；
Step S510, it is judged that when legal, RRU carries out clock switch；
Step S512, RRU carry out bottom data stream switching；
Wherein, the execution of step S512 be in order to follow-up recover to connect when link breakpoint time, it is simple to better control RRU-MS is controlled the adjustment of information, it is possible to play superior technique effect.
The looped network that Fig. 6 to Figure 15 illustrates in a preferred implementation of the embodiment of the present invention switches example, in the preferred embodiment, can can support that the maximum RRU quantity connected is 8 by this looped network, namely this looped network is maximum can support that 8 grades of looped networks are switched, wherein, Loop-test serial sequence represents respectively that with 1/0 generation breakpoint/link is normal, and the value that RRU-MS controls information represents business principal direction/standby direction respectively with 1/0, arrow represents service operation direction, and concrete reversed process is as follows:
Step 1: as shown in Figure 7 A, the unidirectional cascade of business, normal operation, as shown in Figure 7 B, when breaking point detection, principal direction and on standby direction the testing result of each RRU all normal, in principal direction, the master slave mode of each RRU controls the value of information is predetermined value 1, on standby direction, the master slave mode of each RRU controls value and the mutual exclusion in principal direction of information, is 0；
Step 2: as shown in Figure 8 A, A point chain rupture, accordingly, as shown in Figure 8 B, Loop-test testing result changes, and in principal direction, the breaking point detection result of RRU4 and RRU5 changes, and on standby direction, the breaking point detection result of RRU0 to RRU3 changes；
Step 3: as shown in Figure 9 A, A point subordinate RRU switching control, as shown in Figure 9 B, BBU principal direction controls information to RRU4 and the RRU5 master slave mode sent change, be updated to 0, accordingly, standby direction controls information to RRU4 and the RRU5 master slave mode sent change, be updated to 1；
Step 4: as shown in Figure 10 A, B point chain rupture, as shown in Figure 10 B, Loop-test testing result changes, and in principal direction, the breaking point detection result of RRU2 and RRU3 changes, and indicates chain rupture, and on standby direction, the breaking point detection result of each RRU is identical with Fig. 9 B；
Step 5: as shown in Figure 11 A, B point subordinate RRU switching control, as shown in Figure 11 B, BBU principal direction controls information to RRU2 and the RRU3 master slave mode sent change, be updated to 0, accordingly, standby direction controls information to RRU2 and the RRU3 master slave mode sent change, be updated to 1；
Step 6: as illustrated in fig. 12, B point breakpoint recovers, and as shown in Figure 12 B, Loop-test testing result changes, and in principal direction, the breaking point detection result of RRU2 and RRU3 changes, and instruction B point recovers；Or, as indicated in fig. 12 c, A point breakpoint recovers, and as indicated in fig. 12d, Loop-test testing result changes, and on standby direction, the breaking point detection result of RRU2 to RRU5 changes, and instruction A point recovers；
Step 7: as shown in FIG. 13A, B point breakpoint recovers, RRU-MS adjusts control, as shown in Figure 13 B, BBU principal direction controls information to RRU2 and the RRU3 master slave mode sent change, be updated to 1, accordingly, standby direction controls information to RRU2 and the RRU3 master slave mode sent change, be updated to 0；Or, as shown in fig. 13 c, A point recovers, and RRU-MS adjusts control, controls information as illustrated in figure 13d to each RRU master slave mode sent in BBU principal direction and on standby direction；
Step 8: as shown in Figure 14 A, A point breakpoint recovers, and as shown in Figure 14B, Loop-test testing result changes, and in principal direction, the breaking point detection result of RRU4 and RRU5 changes, and instruction A point recovers；Or, as shown in Figure 14 C, B point breakpoint recovers, and as shown in fig. 14d, Loop-test testing result changes, and in principal direction, the breaking point detection result of RRU2 and RRU3 changes, and instruction B point recovers；
Step 9: as shown in fig. 15, A point breakpoint recovers, and RRU-MS adjusts and controls as shown in fig. 15b；Or, as shown in figure 15 c, B point breakpoint recovers, and RRU-MS adjusts and controls as shown in fig. 15b.
Adopt the looped network reverse method under the remote radio pattern that above-described embodiment provides, it is possible to unified the whole breaking point detection of Detection & Controling, RUS-MS Schema control and RRU clock competition protection switching process by Lower level logical, make to switch in hgher efficiency.
Figure 16 is the structural representation of the looped network exchanging system under remote radio pattern according to embodiments of the present invention, and this system is for implementing the looped network reverse method under the remote radio pattern that above-described embodiment provides.This system includes: Base Band Unit (BBU) and Remote Radio Unit (RRU), and wherein, BBU includes: detection module the 10, first judge module 20, acquisition module 30 and sending module 40；RRU includes: the second judge module 50 and switch module 60.
Wherein, detection module 10, for the link of looped network is carried out breaking point detection, obtain the testing result information of link, wherein, testing result information includes: the positional information of the breakpoint of chain rupture occurs；First judge module 20, is connected to detection module 10, for judging whether link chain rupture occurs according to testing result information；Acquisition module 30, is connected to the first judge module 20, and for when judging link generation chain rupture, according to testing result information, the master slave mode obtaining each radio frequency remote unit RRU on link controls information；Sending module 40, is connected to acquisition module 30, is handed down to each RRU corresponding respectively for the master slave mode of each RRU controls information.
Wherein, the second judge module 50, whether legal it is used for judging that its master slave mode controls information；Switch module 60, for when the master slave mode control information of RRU is legal, carrying out clock switch.
In embodiments of the present invention, sending module 40 can be also used for two light mouths by the composition looped network on BBU and issues serial loop cycle tests along principal direction and standby direction parallel to each RRU respectively, wherein, serial loop cycle tests principal direction and standby direction issued differs；Detection module 10 can be also used for verifying according to each RRU feedback sequence returned along principal direction and standby direction respectively, obtains each RRU testing result information along principal direction and standby direction.
In embodiments of the present invention, switch module 60 and can be also used for the bottom data stream of switching RRU.
Adopt the looped network changeover apparatus under the remote radio pattern that above-described embodiment provides, it is possible to unified the whole breaking point detection of Detection & Controling, RUS-MS Schema control and RRU clock competition protection switching process by Lower level logical, make to switch in hgher efficiency.
In from the description above; can be seen that; present invention achieves following technique effect: when annular networking generation link breakpoint; the RRU in breakpoint downstream can switch clock in time; so that the business of annular networking is recovered rapidly; improve the service reliability of annular networking; simultaneously; the whole breaking point detection of Detection & Controling, RUS-MS Schema control and RRU clock competition protection switching process can be unified by Lower level logical; make to switch in hgher efficiency; thus ensureing that business is not interrupted, volume of business does not decline, provide complete protection scheme for the link breakpoint of looped network simultaneously.
Obviously, those skilled in the art should be understood that, each module of the above-mentioned present invention or each step can realize with general calculation element, they can concentrate on single calculation element, or it is distributed on the network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, can be stored in storage device is performed by calculation element, and in some cases, shown or described step can be performed with the order being different from herein, or they are fabricated to respectively each integrated circuit modules, or the multiple modules in them or step are fabricated to single integrated circuit module realize.So, the present invention is not restricted to the combination of any specific hardware and software.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (10)
1. the looped network reverse method under a remote radio pattern, it is characterised in that including:
The link of looped network is carried out breaking point detection by Base Band Unit BBU, obtains the testing result information of described link, it is determined that described link generation chain rupture, and wherein, described testing result information includes: the positional information of the breakpoint of chain rupture occurs；
Described BBU is according to described testing result information, and the master slave mode obtaining each radio frequency remote unit RRU on described link controls information, and the described master slave mode control information of each described RRU is handed down to each described RRU；
Whether each described RRU judges that its master slave mode controls information respectively legal, if legal, then described RRU carries out clock switch.
2. method according to claim 1, it is characterised in that link is carried out breaking point detection by described BBU, obtains the testing result information of described link, including:
Described BBU issues serial loop cycle tests along principal direction and standby direction to RRU each described respectively parallel by two light mouths of the described looped network of composition thereon, and wherein, described principal direction and the described serial loop cycle tests issued on described standby direction differ；
Each described RRU receives the described serial loop cycle tests issued along described principal direction and described standby direction respectively, and using the described serial loop cycle tests that receives as feedback sequence, described feedback sequence is returned to described BBU along the path receiving described serial loop cycle tests；
The described feedback sequence returned along described principal direction and described standby direction respectively of RRU each described is verified by described BBU, obtains each described RRU described testing result information along described principal direction and described standby direction.
3. method according to claim 2, it is characterised in that described BBU is according to described testing result information, and the master slave mode control information obtaining each the described radio frequency remote unit RRU on described link includes:
For each described RRU, described BBU is according to this RRU described testing result information along described principal direction and described standby direction, obtain this RRU and control information and the master slave mode control information in described standby direction at the master slave mode of described principal direction, wherein, control information at the master slave mode of described principal direction and control information mutual exclusion with the master slave mode in described standby direction.
4. method according to claim 3, it is characterised in that the described master slave mode control information of each described RRU is handed down to each described RRU and includes by described BBU:
For each described RRU, described BBU issues this RRU along described principal direction to described RRU by one of two described light mouths thereon and controls information at the master slave mode of described principal direction, issues this RRU master slave mode in described standby direction by direction standby described in another light opening's edge in two described light mouths thereon to described RRU and controls information.
5. method according to claim 4, it is characterised in that whether each described RRU judges that its master slave mode controls information respectively legal, if legal, then described RRU carries out clock switch, including:
Each described RRU, described RRU are judged at the light mouth of described principal direction and whether existence alerts at the described light mouth for direction for it；
If it is determined that being all absent from state alarm, and described RRU to control information along the master slave mode of described principal direction identical with the master slave mode control information along described standby direction, then determining that the master slave mode control information of described RRU is illegal, described RRU does not carry out clock switching；
If it is determined that be all absent from state alarm, and described RRU controls information along the master slave mode of described principal direction and controls information with the master slave mode along described standby direction and differ, determine that the master slave mode control information of described RRU is legal, the master slave mode that its clock source is switched to along described principal direction by described RRU controls information and the light mouth recovered clock in the master slave mode control direction, information place being predetermined value along the described master slave mode control information for direction, wherein, described predetermined value instruction holotype；
If it is determined that the light mouth existence alarm on one of them direction, light mouth on another direction is absent from state alarm and this RRU master slave mode control information in the direction is described predetermined value, then its clock source is switched to the light mouth recovery time on the described direction being absent from state alarm by described RRU, if described RRU is not described predetermined value along the master slave mode control information in the described direction being absent from state alarm, then its clock source is switched to local clock by described RRU；
If all existence alarms, then its clock source is switched to local clock by described RRU.
6. method according to any one of claim 1 to 5, it is characterised in that after described RRU carries out clock switch, described method also includes: according to the direction of described clock switch, switch the bottom data stream of described RRU.
7. method according to any one of claim 1 to 5, it is characterised in that after described RRU carries out clock switch, described method also includes:
The link of described looped network is carried out breaking point detection by described BBU, knows that described breakpoint recovers link and connects；
Described BBU adjusts the master slave mode of each described RRU and controls information, and the master slave mode control information of each the described RRU after adjustment is handed down to each described RRU respectively corresponding；
Each described RRU judges that whether the master slave mode control information after its adjustment is legal, and determines whether to carry out clock switch according to judged result.
8. the looped network exchanging system under a remote radio pattern, it is characterised in that including: Base Band Unit BBU and radio frequency remote unit RRU, wherein,
Described BBU includes:
Detection module, for the link of looped network is carried out breaking point detection, obtains the testing result information of described link, and wherein, described testing result information includes: the positional information of the breakpoint of chain rupture occurs；
According to described testing result information, first judge module, for judging whether described link chain rupture occurs；
Acquisition module, for when judging described link generation chain rupture, according to described testing result information, the master slave mode obtaining each the described radio frequency remote unit RRU on described link controls information；
Sending module, is handed down to each described RRU corresponding respectively for the described master slave mode of each described RRU controls information；
Described RRU includes:
Whether legal second judge module, be used for judging that its main master slave mode controls information；
Switch module, for when the master slave mode control information of described RRU is legal, carrying out clock switch.
9. system according to claim 8, it is characterised in that
Described sending module is additionally operable to issue serial loop cycle tests along principal direction and standby direction parallel to RRU each described respectively by two the light mouths forming described looped network on described BBU, wherein, the described serial loop cycle tests described principal direction and described standby direction issued differs；
Described detection module, for verifying according to the feedback sequence returned along described principal direction and described standby direction respectively of RRU each described, obtains each described RRU described testing result information along described principal direction and described standby direction.
10. system according to claim 8, it is characterised in that described in switch module and be additionally operable to switch the bottom data stream of described RRU.
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| CN201110145244.5A CN102811088B (en) | 2011-05-31 | 2011-05-31 | Looped network reverse method under remote radio pattern and system |
| PCT/CN2011/080881 WO2012163009A1 (en) | 2011-05-31 | 2011-10-18 | Ring network switching method and system in radio remote mode |
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| CN201110145244.5A CN102811088B (en) | 2011-05-31 | 2011-05-31 | Looped network reverse method under remote radio pattern and system |
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| CN101753244A (en) * | 2008-12-05 | 2010-06-23 | 大唐移动通信设备有限公司 | Method and system for transporting service in RRU loop network |
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| CN102811088A (en) | 2012-12-05 |
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