CN102546344A - Link switching method and device - Google Patents
Link switching method and device Download PDFInfo
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- CN102546344A CN102546344A CN2011101393254A CN201110139325A CN102546344A CN 102546344 A CN102546344 A CN 102546344A CN 2011101393254 A CN2011101393254 A CN 2011101393254A CN 201110139325 A CN201110139325 A CN 201110139325A CN 102546344 A CN102546344 A CN 102546344A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/42—Loop networks
- H04L12/437—Ring fault isolation or reconfiguration
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Abstract
The invention provides a link switching method and device. The method comprises the following steps that: when an RRU (radio remote unit) looped network link is normal, an RRU in the RRU looped network receives time delay compensation values of transmission links from two directions of a BBU (base-band unit); when the RRU looped network link is broken to perform the switching, the RRU switches the time delay compensation value of one direction used before switching to the time delay compensation value of other direction used after switching. The method and device provided by the invention can be used for solving the problem that the service cannot be in continuous operation when the link switching is performed in the prior art, and guaranteeing the continuous operation of the service.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of link switching method and device.
Background technology
The stable network quality is the basic demand to communication; C-RAN (green wireless access network; Clean Radio Access Network) framework is just ensureing that network quality is that starting point is introduced, and the RRU looped network protection technology key technology in the C-RAN framework just.RRU (remote radio unit (RRU); Remote Radio Frequency Unit) under the looped network, the Cheng Huanguang mouth of RRU adopts two folk prescriptions of receiving to handling and single-shot mechanism BBU (Base Band Unit; Base Band Unit) Cheng Huanguang mouth adopts two two mechanism of receiving of sending out; Thereby guarantee that under the situation of looped network chain rupture switch through the active and standby light mouth of BBU and RRU, business datum can be received and dispatched as usual.Simultaneously, because there is the transmission link of both direction in the RRU looped network, during the looped network chain rupture, need to upgrade the delay compensation value of corresponding RRU.
In the prior art; If the link generation chain rupture of RRU looped network, then RRU remeasures optical-fiber time-delay and is reported to BBU after the light mouth switches, then; BBU recomputates the delay compensation value again and is issued to RRU; RRU uses the delay compensation value to switch setting, need expend the long period like this, thereby can't guarantee that business runs without interruption.
Summary of the invention
Main purpose of the present invention is to provide a kind of link switching method and device, when link switchover occurring, can't guarantee the problem that business runs without interruption to solve at least in the prior art.
According to an aspect of the present invention, a kind of link switching method is provided, has comprised: at the RRU loop network link just often, the RRU in the RRU looped network receives the delay compensation value from the transmission link of the both direction of BBU; When switching in the chain rupture of RRU loop network link, the delay compensation value of a direction of using before RRU will switch switches to the delay compensation value of switching another direction of using the back.
The step that RRU in the RRU looped network receives from the delay compensation value of the transmission link of the both direction of BBU comprises: at the RRU loop network link just often, and the device time delay of the RRU that BBU reception RRU reports; BBU is according to the delay compensation value of the transmission link of the device time delay of RRU and detected optical fiber link time-delay calculation both direction; BBU sends to RRU with the delay compensation value of the transmission link of both direction.
The step of the device time delay of the RRU that BBU reception RRU reports comprises: RRU reports BBU with the device time delay when powering on.
The step that RRU in the RRU looped network receives from the delay compensation value of the transmission link of the both direction of BBU comprises: if the delay compensation value changes, the delay compensation value after BBU will change sends to RRU.
RRU detects the RRU looped network and the link chain rupture whether occurs through being solidificated in trace routine in the hardware.
When RRU detected the RRU looped network and the link chain rupture whether occurs through being solidificated in trace routine in the hardware, link switching method also comprised: BBU detects the RRU looped network and the link chain rupture whether occurs through being solidificated in trace routine in the hardware; The link chain rupture appears in looped network if BBU detects RRU, and then BBU carries out the switching of light mouth of self.
The delay compensation value comprises the delay compensation value of the mouth of not sharing the same light; The step that the delay compensation value of a direction of using before wherein, RRU will switch switches to the delay compensation value of switching another direction of using the back comprises: RRU confirms employed light mouth behind the link switchover; RRU makes a delay compensation value of using up the mouth correspondence switch the time delay setting; RRU carries out link switchover according to switching the time delay setting.
According to a further aspect in the invention, a kind of link switchover device is provided, has been positioned on the RRU, this link switchover device comprises: transmission unit is used for just often receiving the delay compensation value from the transmission link of the both direction of BBU at the RRU loop network link; Switch unit, the delay compensation value of a direction of using before being used for will switching when switching in the chain rupture of RRU loop network link switches to the delay compensation value of switching another direction of using the back.
The link switchover device also comprises: detecting unit, the trace routine that is used for the hardware through being solidificated in RRU detects the RRU looped network and the link chain rupture whether occurs.
Transmission unit comprises: sending module is used for when powering on, the device time delay being reported BBU; Receiver module is used for just often receiving the delay compensation value from the transmission link of the both direction of BBU at the RRU loop network link, and wherein, the delay compensation value is obtained according to device time delay and the detected optical fiber link time-delay calculation of RRU by BBU.
The present invention has following beneficial effect:
(1) sends to RRU through the delay compensation value that before the link chain rupture, will be used for link switchover; Thereby when link switchover takes place, do not need spended time that the delay compensation value is recomputated and transmit; But directly can use the delay compensation value to switch; Guarantee professional running without interruption like this, solved the existing problem that can't guarantee that business runs without interruption in the prior art;
(2) the present invention has significantly reduced chain rupture and the time of repairing network found through the mode that RRU detects automatically and switchover mode replaces manual detection and switches;
(3) the present invention detects the mode that replaces application software regularly to detect by the firmware of RRU and BBU self, has avoided the message flow between same veneer and different veneer mutual, has shortened the mutual time;
(4) the present invention adopts BBU and RRU to detect jointly but not the mode of BBU or the single detection of RRU, has improved the sensitivity of network, the quick switching when realizing chain rupture.
Under the scene of RRU looped network chain rupture, the present invention adopts BBU and RRU firmware from the mode that detects, switches certainly, firmware is all transferred in the chain rupture work of switching accomplished; Under the situation that does not almost have to increase in the firmware workload; Greatly reduce the realization difficulty and the complexity of software, when guaranteeing quality of service, shortened the construction cycle; Reduce development cost, reached the purpose that seamlessly transits.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is a kind of preferred flow charts according to the link switching method of the embodiment of the invention;
Fig. 2 is the sketch map according to the link switchover scheme of the embodiment of the invention;
Fig. 3 is the optical-fiber time-delay sketch map according to the embodiment of the invention;
Fig. 4 is the optical-fiber time-delay detection and Stored Procedure figure according to the embodiment of the invention;
Fig. 5 is the RRU looped network state diagram according to the embodiment of the invention;
Fig. 6 switches sketch map according to the RRU looped network chain rupture of the embodiment of the invention;
Fig. 7 is a kind of preferred structure figure according to the link switchover device of the embodiment of the invention.
Embodiment
Fig. 1 is a kind of preferred flow charts according to the link switching method of the embodiment of the invention, and it comprises the steps:
S102, at the RRU loop network link just often, the RRU in the RRU looped network receives the delay compensation value from the transmission link of the both direction of BBU;
S104, when switching in the chain rupture of RRU loop network link, the delay compensation value of a direction of using before RRU will switch switches to the delay compensation value of switching another direction of using the back.
In this preferred embodiment; Delay compensation value through before the link chain rupture, being used for link switchover sends to RRU; Thereby when link switchover takes place, do not need spended time that the delay compensation value is recomputated and transmit; But directly can use the delay compensation value to switch, and guaranteed professional running without interruption like this, solved the existing problem that can't guarantee that business runs without interruption in the prior art.
The invention provides a kind of transmission method of preferred delay compensation value; Particularly; The step that RRU in the RRU looped network receives from the delay compensation value of the transmission link of the both direction of BBU comprises: at the RRU loop network link just often, and the device time delay of the RRU that BBU reception RRU reports; BBU is according to the delay compensation value of the transmission link of the device time delay of RRU and detected optical fiber link time-delay calculation both direction; BBU sends to RRU with the delay compensation value of the transmission link of both direction.
The invention provides the step that a kind of preferred devices time delay reports, particularly, the step of the device time delay of the RRU that BBU reception RRU reports comprises: RRU reports BBU with the device time delay when powering on.
The step that RRU in the RRU looped network receives from the delay compensation value of the transmission link of the both direction of BBU comprises: if the delay compensation value changes, the delay compensation value after BBU will change sends to RRU.
The delay compensation value comprises the delay compensation value of the mouth of not sharing the same light; The step that the delay compensation value of a direction of using before wherein, RRU will switch switches to the delay compensation value of switching another direction of using the back comprises: RRU confirms employed light mouth behind the link switchover; RRU makes a delay compensation value of using up the mouth correspondence switch the time delay setting; RRU carries out link switchover according to switching the time delay setting.
To link switching method shown in Figure 1, the present invention further provides a kind of concrete preferred version, and is as shown in Figure 2.Link switching method is switched three modules by optical-fiber time-delay detection and storage, time delay setting and chain rupture and is formed; Specifically comprise: detect the optical-fiber time-delay value of measuring the corresponding RRU of positive and negative two links with memory module by optical-fiber time-delay; By time delay module is set and carries out the time delay setting, switch the switching that module is carried out the detection of chain rupture and controlled active and standby light mouth and time delay by chain rupture.Link switching method as shown in Figure 2 specifically comprises the steps:
(1) after BBU and each RRU of looped network normally power on, report the device time delay by RRU to BBU, BBU is through loopback detection measuring optical fiber time delay and combine the optical-fiber time-delay value of positive and negative two links of device time-delay calculation.Certainly, when powering on, report the device time delay, this is a kind of example of the present invention, and RRU of the present invention can also be in the normal device time delay that constantly reports of other links.
Then, optical-fiber time-delay detects with memory module the optical-fiber time-delay value that calculates is stored among the DBS (Database Systems, DataBase System).
(2) after the optical-fiber time-delay value of RRU stores among the DBS, optical-fiber time-delay detects with memory module and will calculate the optical-fiber time-delay offset of this RRU both direction and be handed down to this RRU.Time delay is provided with the activestandby state of module according to the present light mouth of this RRU, selects the delay compensation value of certain direction to be provided with, and delay compensation comes into force.
(3) the Link State detection that module is responsible for BBU and RRU is switched in chain rupture, when detecting the loop network link disconnection, switches the active and standby light mouth of BBU and RRU, and switches the delay compensation value of RRU respective direction.Here, the delay compensation value comprises the delay compensation value of not sharing the same light mouthful, and wherein, the step that RRU uses the delay compensation value to carry out link switchover comprises: RRU confirms employed light mouth behind the link switchover; RRU makes a delay compensation value of using up the mouth correspondence switch the time delay setting; RRU carries out link switchover according to switching the time delay setting.
In an embodiment of the present invention, RRU can detect the RRU looped network and the link chain rupture whether occurs through being solidificated in trace routine in the hardware.In this preferred embodiment, by the firmware detection replacement application software detection of RRU self, and the detection mode of this firmware can adopt the detection frequency that is higher than application software to detect Link State; Thereby avoided the message flow between same veneer and different veneer mutual; Shorten the mutual time, under the situation that does not almost have to increase in the firmware workload, greatly reduced the realization difficulty and the complexity of software; When guaranteeing quality of service; Shorten the construction cycle, reduced development cost, reached the purpose that seamlessly transits.
Further, when RRU detected the RRU looped network and the link chain rupture whether occurs through being solidificated in trace routine in the hardware, link switching method also comprised: BBU detects the RRU looped network and the link chain rupture whether occurs through being solidificated in trace routine in the hardware; The link chain rupture appears in looped network if BBU detects RRU, and then BBU carries out the switching of light mouth of self.This preferred embodiment adopts BBU and RRU to detect jointly but not the mode of BBU or the single detection of RRU, has improved the sensitivity of network, the quick switching when realizing chain rupture.
Describe each processing procedure shown in Figure 2 in detail below in conjunction with accompanying drawing.
1) optical-fiber time-delay detects and storage
Optical-fiber time-delay is made up of the device time delay on the RRU and the time delay two parts on the optical fiber between RRU and BBU.As shown in Figure 3, forward device time delay is the time delay (like the time delay of A11 in RRU# 1, A12, A13, A14, A15) of each node of RRU to its key light mouth; Reverse device time delay is each node of RRU is equipped with the light mouth to it a time delay (like the time delay of the A21 among the RRU# 2, A22, A23, A24, A25); The optical fiber link time delay is the time delay (like the time delay of B1, B2, B3, B4) of BBU light mouth to the optical fiber link between RRU and each RRU; The forward link time delay is the time delay (like the time delay of P1 and Ant1) of each RRU antenna opening and BBU key light mouth; The reverse link time delay is equipped with the time delay (like the time delay of P2 and Ant2) of light mouth for each RRU antenna opening and BBU.
When the RRU of looped network chain rupture, if the light mouth remeasures optical-fiber time-delay and is reported to BBU after switching, recomputated offset again and be issued to the RRU setting and come into force, need expend the long period, the business that can't guarantee runs without interruption.Therefore, need, measure RRU the optical-fiber time-delay of positive and negative two transmission links when initially powering on.
Optical-fiber time-delay detect with memory module by RRU go up that the device time delay reports, BBU calculates optical-fiber time-delay, optical-fiber time-delay storage and optical-fiber time-delay compensation value calculation and issue four sub-module and constitute, as shown in Figure 4.
The last device time delay of RRU reports: RRU reports its device delay parameter to BBU after powering on and getting into idle condition.
BBU calculates the time delay on the optical fiber of certain RRU that veneer (such as the light-emitting window interface board) that optical-fiber time-delay: BBU is responsible for time delay detection measures according to loopback detection and combines the optical-fiber time-delay value of positive and negative two links of this RRU of its device time-delay calculation; When satisfying the condition that reports, report the master control veneer of BBU.
Optical-fiber time-delay storage: when master control veneer is received the optical-fiber time-delay that reports, the optical-fiber time-delay value is stored among the DBS.
The optical-fiber time-delay compensation value calculation: time delay after changing, optical-fiber time-delay compensation value calculation module will be calculated the optical-fiber time-delay offset of this RRU, and mail to this RRU.
2) time delay setting
Time delay is arranged under two scenes carries out: the time delay after time delay renewal after the RRU time delay changes and RRU chain rupture are switched is switched.
Time delay after the RRU time delay changes is upgraded: when RRU initially powered on or causes time delay to change owing to reasons such as optical fiber shakes, its time delay value can report BBU, and its delay compensation is also calculated in the BBU storage.Receive the new delay compensation value of the both direction that BBU calculates as RRU after, time delay is provided with module can be provided with this offset according to the activestandby state of present light mouth, and delay compensation is come into force.
Time delay after the RRU chain rupture is switched is switched: after RRU chain rupture and active and standby light mouth are switched, need reset its delay compensation with the offset on the other direction.Such as, if when certain RRU of looped network normally moves, its key light mouth is a light mouth 0, usefulness be forward delay compensation value, when No. 0 light mouth chain rupture of this RRU, its key light mouth switches to the light mouth No. 1, then need compensate with reverse time delay value.For guaranteeing the quick switching of time delay, the time delay setting when switching is accomplished by firmware.
3) chain rupture is switched
The Link State of RRU looped network can be divided into normal and chain rupture two states, sees normal looped network and chain rupture looped network among Fig. 5.The chain rupture looped network can be divided into two kinds of situation again: on/descending (preceding reverse) optical fiber chain rupture ( chain rupture point 1 and 2 among the figure) and the chain rupture of RRU device are the chain rupture (chain rupture point 3 among the figure) of RRU physical hardware reason initiation.
All can't satisfy the requirement of switching fast owing to adopt application software regularly to detect perhaps by the unilaterally unified control of BBU/RRU; Therefore; The present invention adopts BBU and RRU firmware from the mode that detects, switches certainly, the network self-adapting when realizing the chain rupture of RRU looped network with seamlessly transit.
The chain rupture of RRU looped network is switched as shown in Figure 6; In conjunction with Fig. 5: when between RRU#2 and the RRU#3 during chain rupture; RRU#2 detects its forward link through LOOPTEST and opens circuit, because RRU#2 is positioned at BBU key light mouth (P1 mouth) side of chain rupture point, therefore need not to switch (RRU#1 is similar); RRU#3 can detect its reverse link chain rupture through LOOPTEST; Because being positioned at the BBU of chain rupture point, RRU#3 is equipped with light mouth (P2 mouth) side; Therefore need switch, at this moment, initiate the light mouth by this RRU firmware and switch; The light mouth that is equipped with is originally switched and is that key light mouth, key light mouth originally switch to being equipped with light mouth (RRU#4 is similar).When BBU key light mouth detects the RRU looped network chain rupture is arranged through LOOPTEST, switches light mouth not; When BBU is equipped with the light mouth and detects the RRU looped network chain rupture is arranged through LOOPTEST, switch that to be equipped with the light mouth be the key light mouth.The link of switching after the completion is seen the chain rupture looped network part among Fig. 5.After the light mouth of RRU was switched completion, the former reverse delay compensation value that the utilization of RRU firmware issues was reset as new delay compensation value.After all RRU that need switch switched completion, loop network link got into stable state once more.Because whole process need not manual intervention, the firmware of all switching module by chain rupture is accomplished automatically, has reduced switching time to greatest extent, and user's impression is less than the interruption of business, thereby realizes network self-adapting and seamlessly transit.
Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail:
As shown in Figure 5, dispose the looped network that 4 RRU form, only go up the corresponding sector of configuration at certain RRU (RRU# 2 or RRU#3), configuration P1 is the key light mouth, P2 is for being equipped with the light mouth.
After each veneer of BBU, each RRU normally powered on, RRU reported its device time delay.BBU delays when receiving the device of RRU, calculates its optical-fiber time-delay and is stored in the database.Simultaneously, calculate the optical-fiber time-delay offset of this RRU and be handed down to this RRU.
When RRU receives the optical-fiber time-delay compensation that BBU sends, select the forwards/reverse delay compensation to be provided with according to RRU light mouth activestandby state.At this moment, can normally get through.
Under the situation of normal talking, make the scene of the optical fiber chain rupture between RRU# 2 and the RRU#3.The original light mouth that is equipped with of this moment RRU# 3, RRU# 2 is switched and is that key light mouth, key light mouth originally switch to being equipped with the light mouth, and adopts former reverse delay compensation value as new delay compensation value process setting, and BBU is equipped with the light mouth and switches to the key light mouth, and link-recovery is normal.In the whole process, conversation is normally carried out.
Fig. 7 is a kind of preferred structure figure according to the link switchover device of the embodiment of the invention; It is positioned on the RRU; This link switchover device comprises: transmission unit 702 is used for just often receiving the delay compensation value from the transmission link of the both direction of BBU at the RRU loop network link; Switch unit 704 is connected to transmission unit 702, and the delay compensation value of a direction of using before being used for will switching when switching in the chain rupture of RRU loop network link switches to the delay compensation value of switching another direction of using the back.
In this preferred embodiment; Delay compensation value through before the link chain rupture, being used for link switchover sends to RRU; Thereby when link switchover takes place, do not need spended time that the delay compensation value is recomputated and transmit; But directly can use the delay compensation value to switch, and guaranteed professional running without interruption like this, solved the existing problem that can't guarantee that business runs without interruption in the prior art.
Transmission unit 702 passes through the delay compensation value of following steps reception from the transmission link of the both direction of BBU: at the RRU loop network link just often, and the device time delay of the RRU that the transmission unit 702 of BBU reception RRU reports; BBU is according to the delay compensation value of the transmission link of the device time delay of RRU and detected optical fiber link time-delay calculation both direction; BBU sends to RRU with the delay compensation value of the transmission link of both direction.
Preferably, the transmission unit 702 of RRU reports BBU with the device time delay when powering on.
Preferably, if the delay compensation value changes, the delay compensation value after BBU will change sends to the transmission unit 702 of RRU.
The link switchover device also comprises: detecting unit 706, be connected to switch unit 704, and the trace routine that is used for the hardware through being solidificated in RRU detects the RRU looped network and the link chain rupture whether occurs.
When RRU detected the RRU looped network and the link chain rupture whether occurs through being solidificated in trace routine in the hardware, BBU detected the RRU looped network and the link chain rupture whether occurs through being solidificated in trace routine in the hardware; The link chain rupture appears in looped network if BBU detects RRU, and then BBU carries out the switching of light mouth of self.
Transmission unit 702 comprises: sending module 7021 is used for when powering on, the device time delay being reported BBU; Receiver module 7022 is used for just often receiving the delay compensation value from the transmission link of the both direction of BBU at the RRU loop network link, and wherein, the delay compensation value is obtained according to device time delay and the detected optical fiber link time-delay calculation of RRU by BBU.
Delay compensation value in this preferred embodiment comprises the delay compensation value of not sharing the same light mouthful, and like this, the switch unit 704 of RRU uses the delay compensation value to carry out link switchover: RRU through following steps to confirm employed light mouth behind the link switchover; RRU makes a delay compensation value of using up the mouth correspondence switch the time delay setting; RRU carries out link switchover according to switching the time delay setting.
Obviously, it is apparent to those skilled in the art that above-mentioned each module of the present invention or each step can realize with the general calculation device; They can concentrate on the single calculation element; Perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element; Thereby; Can they be stored in the storage device and carry out, and in some cases, can carry out step shown or that describe with the order that is different from here by calculation element; Perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a link switching method is characterized in that, comprising:
At the RRU loop network link just often, the reception of the RRU in the said RRU looped network is from the delay compensation value of the transmission link of the both direction of BBU;
When switching in the chain rupture of said RRU loop network link, the delay compensation value of a direction of using before said RRU will switch switches to the delay compensation value of switching another direction of using the back.
2. method according to claim 1 is characterized in that, the step that the RRU in the said RRU looped network receives from the delay compensation value of the transmission link of the both direction of BBU comprises:
At the RRU loop network link just often, said BBU receives the device time delay of the said RRU that said RRU reports;
Said BBU is according to the delay compensation value of the transmission link of the device time delay of said RRU and the said both direction of detected optical fiber link time-delay calculation;
Said BBU sends to said RRU with the delay compensation value of the transmission link of said both direction.
3. method according to claim 2 is characterized in that, the step that said BBU receives the device time delay of the said RRU that said RRU reports comprises:
Said RRU reports said BBU with said device time delay when powering on.
4. method according to claim 1 is characterized in that, the step that the RRU in the said RRU looped network receives from the delay compensation value of the transmission link of the both direction of BBU comprises:
If said delay compensation value changes, the delay compensation value after said BBU will change sends to said RRU.
5. method according to claim 1 is characterized in that, said RRU detects said RRU looped network and the link chain rupture whether occurs through being solidificated in trace routine in the hardware.
6. method according to claim 5 is characterized in that, when said RRU detects said RRU looped network and the link chain rupture whether occurs through being solidificated in trace routine in the hardware, also comprises:
Said BBU detects said RRU looped network and the link chain rupture whether occurs through being solidificated in trace routine in the hardware;
If said BBU detects said RRU looped network and the link chain rupture occurs, then said BBU carries out the switching of light mouth of self.
7. method according to claim 1; It is characterized in that; Said delay compensation value comprises the delay compensation value of the mouth of not sharing the same light, and wherein, the step that the delay compensation value of a direction of using before said RRU will switch switches to the delay compensation value of switching another direction of using the back comprises:
Said RRU confirms employed light mouth behind the link switchover;
Said RRU uses the corresponding delay compensation value of said light mouth to switch the time delay setting;
Said RRU carries out link switchover according to switching the time delay setting.
8. a link switchover device is positioned on the RRU, it is characterized in that, comprising:
Transmission unit is used for just often receiving the delay compensation value from the transmission link of the both direction of BBU at the RRU loop network link;
Switch unit, the delay compensation value of a direction of using before being used for will switching when switching in the chain rupture of said RRU loop network link switches to the delay compensation value of switching another direction of using the back.
9. device according to claim 8 is characterized in that, also comprises:
Detecting unit, the trace routine that is used for the hardware through being solidificated in said RRU detects said RRU looped network and the link chain rupture whether occurs.
10. device according to claim 8 is characterized in that transmission unit comprises:
Sending module is used for when powering on, said device time delay being reported said BBU;
Receiver module is used for just often receiving the delay compensation value from the transmission link of the both direction of BBU at the RRU loop network link, and wherein, said delay compensation value is obtained according to device time delay and the detected optical fiber link time-delay calculation of said RRU by said BBU.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110139325.4A CN102546344B (en) | 2011-05-26 | 2011-05-26 | link switching method and device |
| PCT/CN2012/075968 WO2012159570A1 (en) | 2011-05-26 | 2012-05-23 | Link switchover method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110139325.4A CN102546344B (en) | 2011-05-26 | 2011-05-26 | link switching method and device |
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| CN102546344A true CN102546344A (en) | 2012-07-04 |
| CN102546344B CN102546344B (en) | 2017-12-26 |
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| CN201110139325.4A Active CN102546344B (en) | 2011-05-26 | 2011-05-26 | link switching method and device |
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| WO2016101603A1 (en) * | 2014-12-26 | 2016-06-30 | 中兴通讯股份有限公司 | Time delay acquisition method, device, building baseband unit and communication system |
| CN106454907A (en) * | 2015-08-05 | 2017-02-22 | 普天信息技术有限公司 | Ring network system and fault detecting and recovering method |
| JPWO2021090444A1 (en) * | 2019-11-07 | 2021-05-14 | ||
| CN115189784A (en) * | 2022-06-30 | 2022-10-14 | 联想(北京)有限公司 | Time delay processing method and device, electronic equipment and storage medium |
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| WO2012159570A1 (en) | 2012-11-29 |
| CN102546344B (en) | 2017-12-26 |
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