CN103368639A - RRU optical fiber switching method and RRU optical fiber switching system - Google Patents
RRU optical fiber switching method and RRU optical fiber switching system Download PDFInfo
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- CN103368639A CN103368639A CN2012100891721A CN201210089172A CN103368639A CN 103368639 A CN103368639 A CN 103368639A CN 2012100891721 A CN2012100891721 A CN 2012100891721A CN 201210089172 A CN201210089172 A CN 201210089172A CN 103368639 A CN103368639 A CN 103368639A
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Abstract
The invention relates to a data signal transmission processes processing method in communication technologies, and particularly relates to an RRU optical fiber switching method and an RRU optical fiber switching system. The method comprises the steps of regularly checking the link state of each optical fiber connected with an RRU according to a preset time interval; switching optical fibers when that a certain optical fiber connected with the RRU is abnormal in link state is detected; switching information transmitted by the optical fiber which is abnormal in link state to another optical fiber; configuring time delay data of the two optical fibers before and after the switch in an exchanging manner. The RRU optical fiber switching method and the RRU optical fiber switching system are suitable for multi-path optical fiber transmission, waiting for BBU action is not needed when a certain optical fiber is damaged, and RRU can timely respond by switching, and therefore that Ethernet information transmission cannot be interrupted and data still can be transmitted and demodulated normally can be guaranteed.
Description
Technical field
The invention belongs to communication technical field, the processing method when relating to digital data transmission in the communication technology, particularly a kind of RRU (Radio Remote Unit Remote Radio Unit) optical fiber changing method, and a kind of RRU optical fiber switched system.
Background technology
Development along with Wireless Telecom Equipment, the data volume of distributed base station transmission is increasing in 3G and the 4G technology, the transmission of data quantity is increasing accordingly between BBU (the indoor baseband processing unit of Building Baseband Unit) and the RRU, connected mode between the two becomes multifiber by simple optical fiber gradually and jointly transmits base band data, and the configuration of optical-fiber time-delay and changing method also change accordingly thus.Traditional B BU is connected with RRU only needs one road optical fiber can transmit data, yet at present in LTE (Long TermEvolution) multichannel technology, because the increase of bandwidth, the data volume of transmission is uprushed, but also do not improve in the situation about improving in optical fiber speed, now the general multi-channel optical fibre that adopts comes the transmission of data, but wherein IQ base band data multi-channel optical fibre transmits simultaneously, and the transmission of Ethernet data (CM data) then only selects wherein one the tunnel.The problem that prior art faces has: in the situation that a certain road optical fiber damages, the transfer of data of this road optical fiber namely is interrupted, and causes thus data transfer delay or even loss of data.
Summary of the invention
The object of the invention is to overcome shortcomings and deficiencies of the prior art, a kind of RRU optical fiber changing method is provided, the method is in BBU and the RRU situation by the multi-channel optical fibre transmission, can realize RRU automatic inspection optical fiber link state, in time carry out optical fibre channel and switch, guarantee Ethernet data normal transmission and demodulation.
Another object of the present invention also is to provide the system that realizes said method.
Technical scheme of the present invention is as follows:
A kind of RRU optical fiber changing method comprises the steps:
The Link State of the every road optical fiber that is connected with RRU according to default time interval regular check;
Link State to occur unusual when detecting certain the road optical fiber that is connected with RRU, then carries out optical fiber and switch, and the information that the unusual Optical Fiber Transmission of Link State occurs is switched to another road Optical Fiber Transmission;
The delay data of two-way optical fiber before and after the exchange configuration is switched.
Preferably, described changing method also comprises step:
From BBU or upper level RRU, receive in real time the delay data by each the road optical fiber that is connected with described RRU of BBU configuration;
The delay data of the last configuration of every road optical fiber that record is connected with it;
When carrying out the optical fiber switching, select the delay data of the last time of fiber optic recording, the delay data of front and back two-way optical fiber is switched in the exchange configuration.
Preferably, described information is Ethernet data.
Preferably, described delay data comprises the delay data of up direction and the delay data of down direction.
Preferably, the step of described detection fiber Link State comprises:
Default light mouth is synchronous, signal synchronous or the arbitration mechanism of frame synchronization;
Whether the CPRI link that checks optical fiber light, unglazed, frame losing or asynchronous occur losing;
If light, unglazed, frame losing or asynchronous appear losing in described optical fiber, and meet that described light mouth is synchronous, signal synchronously or the arbitration mechanism of frame synchronization, judge that then the Link State of this road optical fiber is unusual.
A kind of RRU optical fiber switched system comprises: optical fiber inspection module, optical fiber handover module, time delay configuration module;
Described optical fiber inspection module is for the Link State of the every road optical fiber that is connected with RRU according to default time interval regular check;
Described optical fiber handover module occurs unusually for detection of the Link State of the optical fiber that is connected with RRU, then carries out optical fiber and switches, and the information that the unusual Optical Fiber Transmission of Link State occurs is switched to another road Optical Fiber Transmission;
Described time delay configuration module is used for the delay data that front and back two-way optical fiber is switched in the exchange configuration.
Preferably, described switched system also comprises: time delay receiver module, time delay logging modle;
Described time delay receiver module is used for from BBU or upper level RRU, receives in real time the delay data by each the road optical fiber that is connected with RRU of BBU configuration;
Described time delay logging modle is used for the last delay data that disposes of every road optical fiber that record is connected with RRU;
When described optical fiber handover module is carried out the optical fiber switching, select the delay data of described optical fiber the last time of described time delay logging modle record, the delay data of front and back two-way optical fiber is switched in described time delay configuration module exchange configuration.
Preferably, described information is Ethernet data.
Preferably, described delay data comprises the delay data of up direction and the delay data of down direction.
Preferably, described optical fiber inspection module comprises:
Default light mouth is synchronous, signal synchronous or the default submodule of the arbitration mechanism of frame synchronization;
Whether the CPRI link that checks optical fiber light, unglazed, frame losing or nonsynchronous detection sub-module occur losing;
If light, unglazed, frame losing or asynchronous appear losing in described optical fiber, and meet that described light mouth is synchronous, signal synchronously or the arbitration mechanism of frame synchronization, then judge the unusual judgement submodule of Link State of described optical fiber.
In RRU optical fiber changing method of the present invention and the system, RRU has realized automatic inspection optical fiber link state, automatic switchover Optical Fiber Transmission path, RRU self can in time make and switch reaction in the situation that a certain road optical fiber damages, and guarantees that the Ethernet communication is not interrupted, and data still can normal transmission; The delay data of every road optical fiber that the RRU real time record is connected with it can dispose accurately delay data according to historical record when optical fiber switches, guarantee the normal demodulation of data.The applicable multi-channel optical fibre transmission of the present invention, the optical fiber damage problem that faces for 3G and the 4G communication technology of positive sustainable development is significant.The present invention has quick, easy, stable characteristics, is worthy of popularization.
Description of drawings
Fig. 1 is RRU optical fiber changing method of the present invention flow chart in one embodiment.
Fig. 2 is RRU optical fiber changing method of the present invention and system's equipment connection schematic diagram in one embodiment.
Fig. 3 is RRU optical fiber switched system of the present invention structured flowchart in one embodiment.
Fig. 4 is the in one embodiment structured flowchart of optical fiber inspection module of RRU optical fiber switched system of the present invention.
Embodiment
Below in conjunction with embodiment and accompanying drawing the present invention is described in further detail, but embodiments of the present invention are not limited to this.
As shown in Figure 1, be RRU optical fiber changing method of the present invention flow chart in one embodiment, RRU optical fiber changing method of the present invention comprises the steps:
The Link State of every road optical fiber that S001, the default time interval regular check of basis are connected with RRU;
S002, Link State to occur unusual when detecting certain the road optical fiber that is connected with RRU, then carries out optical fiber and switch, and the information that the unusual Optical Fiber Transmission of Link State occurs is switched to another road Optical Fiber Transmission;
The delay data of two-way optical fiber before and after S003, exchange configuration are switched.
As shown in Figure 2, be the equipment schematic diagram that RRU optical fiber changing method of the present invention is used in one embodiment, BBU has connected 16 RRU altogether among the figure, and the data of every RRU transmit with two-way optical fiber, every road optical fiber divides the uplink and downlink direction, and the time delay of each direction is not necessarily identical.
When start working in the base station, start BBU and RRU equipment, default proof cycle;
The Link State of every road optical fiber that the default time interval regular check of every RRU basis is connected with it; Link State to occur unusual when RRU detects certain the road optical fiber that is connected with it, then carries out optical fiber and switch, and selects another road Optical Fiber Transmission information; The delay data of two-way optical fiber before and after simultaneously RRU exchange configuration is switched.
Particularly, described information is Ethernet data; Described delay data comprises the delay data of up direction and the delay data of down direction.
The step of described detection fiber Link State comprises:
Default light mouth is synchronous, signal synchronous or the arbitration mechanism of frame synchronization;
Whether the CPRI link that checks optical fiber light, unglazed, frame losing or asynchronous occur losing;
If light, unglazed, frame losing or asynchronous appear losing in described optical fiber, and meet that described light mouth is synchronous, signal synchronously or the arbitration mechanism of frame synchronization, judge that then the Link State of this road optical fiber is unusual.
The inspection of optical fiber CPRI link, can be synchronous according to the default light mouth of actual conditions when starting RRU equipment, signal synchronously, the arbitration mechanism of frame synchronization, do not meet above-mentioned a certain arbitration mechanism as long as be set to detect here, can judge that the Link State of this road optical fiber is unusual.
For example, detect a certain road optical fiber that is connected with it as a certain RRU, such as the Link State of optical fiber 1 for losing light, unglazed, frame losing or asynchronous, RRU is according to the arbitration mechanism of having set, the Link State of judging this road optical fiber is unusual, RRU carries out at this moment optical fiber and switches, to switch to optical fiber 2 by the information of optical fiber 1 control channel transmission, delay data (comprising the delay data of up direction and the delay data of down direction) with optical fiber 1 is configured to optical fiber 2 simultaneously, and the delay data that optical fiber 2 is disposed exchanges to optical fiber 1.
In addition, every RRU receives the control data transmission path of BBU or upper level RRU configuration in real time, if RRU receives the data transfer instruction of BBU at a moment at certain, its control data transmission path is selected optical fiber 1, but it is unusual that RRU this moment detects optical fiber 1 Link State, RRU still carries out optical fiber and switches, and will control data and transfer to another road optical fiber, the delay data of two-way optical fiber before and after simultaneously exchange configuration is switched.
Changing method of the present invention is all applicable in the situation that multi-channel optical fibre connects.The Link State that detects optical fiber 1 such as RRU is unusual, then need and to switch to optical fiber 2 by the information of optical fiber 1 control channel transmission, and this moment RRU to detect the Link State of optical fiber 2 unusual, then need again carry out optical fiber switches, the switch sequence here can be sought successively according to optical fiber ID, also can set other switch sequence, only need find the optical fiber of another road normal condition to get final product, can guarantee that thus RRU in time makes the switching reaction, guarantees the Ethernet data normal transmission.
In a preferred embodiment, RRU optical fiber changing method of the present invention also comprises step:
From BBU or upper level RRU, receive in real time the delay data by each the road optical fiber that is connected with described RRU of BBU configuration;
The delay data of the last configuration of every road optical fiber that record is connected with it;
When carrying out the optical fiber switching, select the optical-fiber time-delay data of the last time of described fiber optic recording, the delay data of two-way optical fiber before and after the exchange configuration is switched.
For example when the switching of RRU executing data, when switching to optical fiber 2 from optical fiber 1, if BBU does not have in time to dispose the delay data of optical fiber 1, then select the delay data of the last time configuration of optical fiber 1 record, the delay data of exchange configuration optical fiber 1 and optical fiber 2; In like manner, if BBU does not have in time to dispose the delay data of optical fiber 2, then select the delay data of the last time configuration of optical fiber 2 records, the delay data of exchange configuration optical fiber 1 and optical fiber 2;
When RRU carries out the optical fiber switching, the situation that does not have in time to dispose the delay data of optical fiber if there is BBU, owing to recorded the delay data of every road optical fiber the last time, therefore RRU needn't wait for that the action of BBU can self realize the configuration of delay data, guarantees that optical fiber information still can normal transmission and demodulation in the situation that a certain optical-fibre channel disconnects.
Correspondingly, the present invention also provides the RRU optical fiber that can realize said method switched system, as shown in Figure 3, is the structured flowchart of this system.
This system comprises: optical fiber inspection module, optical fiber handover module, time delay configuration module;
Described optical fiber inspection module is for the Link State of the every road optical fiber that is connected with RRU according to default time interval regular check;
Described optical fiber handover module is used for occurring at the Link State that detects the optical fiber that is connected with RRU unusual, then carries out optical fiber and switches, and the information that the unusual Optical Fiber Transmission of Link State occurs is switched to another road Optical Fiber Transmission;
Described time delay configuration module is used for the delay data that front and back two-way optical fiber is switched in the exchange configuration.
As shown in Figure 2, when start working in the base station, start BBU and RRU equipment, default proof cycle;
The Link State of every road optical fiber that the default time interval regular check of optical fiber inspection module basis is connected with it; Link State to occur unusual when detecting certain the road optical fiber that is connected with RRU, and the optical fiber handover module is carried out optical fiber and switched, and selects another road Optical Fiber Transmission information; The delay data of two-way optical fiber before and after simultaneously optical fiber configuration module exchange configuration is switched.
Particularly, described information is Ethernet data; Described delay data comprises the delay data of up direction and the delay data of down direction;
As shown in Figure 4, described optical fiber inspection module comprises:
Default light mouth is synchronous, signal synchronous or the default submodule of the arbitration mechanism of frame synchronization;
Whether the CPRI link that checks optical fiber light, unglazed, frame losing or nonsynchronous detection sub-module occur losing;
If light, unglazed, frame losing or asynchronous appear losing in described optical fiber, and meet that described light mouth is synchronous, signal synchronously or the arbitration mechanism of frame synchronization, then judge the unusual judgement submodule of Link State of described optical fiber.
The inspection of optical fiber CPRI link, can be synchronous according to the default light mouth of actual conditions when starting RRU equipment, signal synchronously, the arbitration mechanism of frame synchronization, do not meet above-mentioned a certain condition as long as be set to detect here, can judge that the Link State of this road optical fiber is unusual.
For example, when fiber detection module detects a certain road optical fiber, such as the Link State of optical fiber 1 for losing light, unglazed, frame losing or asynchronous, RRU is according to the arbitration mechanism of having set, the Link State of judging this road optical fiber is unusual, and this moment, the optical fiber handover module was carried out the optical fiber switching, will switch to optical fiber 2 by the information of optical fiber 1 control channel transmission, the time delay configuration module is configured to optical fiber 2 with the delay data of optical fiber 1 simultaneously, and the delay data that optical fiber 2 is disposed exchanges to optical fiber 1.
In addition, every RRU receives the control data transmission path of BBU or upper level RRU configuration in real time, if RRU receives the data transfer instruction of BBU at a moment at certain, its control data transmission path is selected optical fiber 1, but this moment the optical fiber inspection module to detect optical fiber 1 Link State unusual, then the optical fiber handover module is still carried out the optical fiber switching, will control data and transfer to another road optical fiber, and the delay data of front and back two-way optical fiber is switched in simultaneously optical fiber configuration module exchange configuration.
Switched system of the present invention is all applicable in the situation that multi-channel optical fibre connects.The Link State that detects optical fiber 1 such as the optical fiber inspection module is unusual, then the optical fiber handover module needs and will switch to optical fiber 2 by the information of optical fiber 1 control channel transmission, and this moment the optical fiber inspection module to detect the Link State of optical fiber 2 unusual, then the optical fiber handover module need be carried out the optical fiber switching again, the switch sequence here can be sought successively according to optical fiber ID, also can set other switch sequence, only need find the optical fiber of another road normal condition to get final product, can guarantee that thus RRU in time makes the switching reaction, guarantees the Ethernet data normal transmission.
RRU optical fiber switched system of the present invention also comprises: time delay receiver module, time delay logging modle;
Described time delay receiver module is used for from BBU or upper level RRU, receives in real time the delay data by each the road optical fiber that is connected with described RRU of BBU configuration;
Described time delay logging modle is used for the last delay data that disposes of every road optical fiber that record is connected with it;
When the optical fiber handover module is carried out the optical fiber switching, select the delay data of described optical fiber the last time of described time delay logging modle record, the delay data of front and back two-way optical fiber is switched in described time delay configuration module exchange configuration.
For example when the switching of optical fiber handover module executing data, when switching to optical fiber 2 from optical fiber 1, if the time delay receiver module does not receive the delay data of the optical fiber 1 of BBU configuration, then the optical fiber handover module is selected the delay data of the optical fiber 1 the last configuration of time delay logging modle record, the delay data of exchange configuration optical fiber 1 and optical fiber 2; In like manner, if the time delay receiver module does not receive the delay data of the optical fiber 2 of BBU configuration, then the optical fiber handover module is selected the delay data of the last time configuration of optical fiber 2 records, the delay data of exchange configuration optical fiber 1 and optical fiber 2.
When the optical fiber handover module is carried out the optical fiber switching, the situation that does not have in time to dispose the delay data of optical fiber if there is BBU, because the fiber optic recording module has recorded the delay data of every road optical fiber the last time, therefore RRU needn't wait for that the action of BBU can self realize the configuration of delay data, guarantees that optical fiber information still can normal transmission and demodulation in the situation that a certain optical-fibre channel disconnects.
Above-described embodiment of the present invention does not consist of the restriction to protection range of the present invention.Any modification of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within the claim protection range of the present invention.
Claims (10)
1. a RRU optical fiber changing method is characterized in that, comprises the steps:
The Link State of the every road optical fiber that is connected with RRU according to default time interval regular check;
Link State to occur unusual when detecting certain the road optical fiber that is connected with RRU, then carries out optical fiber and switch, and the information that the unusual Optical Fiber Transmission of Link State occurs is switched to another road Optical Fiber Transmission;
The delay data of two-way optical fiber before and after the exchange configuration is switched.
2. RRU optical fiber changing method according to claim 1 is characterized in that, also comprises step:
From BBU or upper level RRU, receive in real time the delay data by each the road optical fiber that is connected with described RRU of BBU configuration;
The delay data of the last configuration of every road optical fiber that record is connected with it;
When carrying out the optical fiber switching, select the delay data of the last time of fiber optic recording, the delay data of front and back two-way optical fiber is switched in the exchange configuration.
3. RRU optical fiber changing method according to claim 1 is characterized in that, described information is Ethernet data.
4. RRU optical fiber changing method according to claim 1 and 2 is characterized in that, described delay data comprises the delay data of up direction and the delay data of down direction.
5. RRU optical fiber changing method according to claim 1 is characterized in that the step of described detection fiber Link State comprises:
Default light mouth is synchronous, signal synchronous or the arbitration mechanism of frame synchronization;
Whether the CPRI link that checks optical fiber light, unglazed, frame losing or asynchronous occur losing;
If light, unglazed, frame losing or asynchronous appear losing in described optical fiber, and meet that described light mouth is synchronous, signal synchronously or the arbitration mechanism of frame synchronization, judge that then the Link State of described optical fiber is unusual.
6. a RRU optical fiber switched system is characterized in that, comprising: optical fiber inspection module, optical fiber handover module, time delay configuration module;
Described optical fiber inspection module is for the Link State of the every road optical fiber that is connected with RRU according to default time interval regular check;
Described optical fiber handover module occurs unusually for detection of the Link State of the optical fiber that is connected with RRU, then carries out optical fiber and switches, and the information that the unusual Optical Fiber Transmission of Link State occurs is switched to another road Optical Fiber Transmission;
Described time delay configuration module is used for the delay data that front and back two-way optical fiber is switched in the exchange configuration.
7. RRU optical fiber switched system according to claim 6 is characterized in that, also comprises: time delay receiver module, time delay logging modle;
Described time delay receiver module is used for from BBU or upper level RRU, receives in real time the delay data by each the road optical fiber that is connected with RRU of BBU configuration;
Described time delay logging modle is used for the last delay data that disposes of every road optical fiber that record is connected with RRU;
When described optical fiber handover module is carried out the optical fiber switching, select the delay data of described optical fiber the last time of described time delay logging modle record, the delay data of front and back two-way optical fiber is switched in described time delay configuration module exchange configuration.
8. RRU optical fiber switched system according to claim 6 is characterized in that, described information is Ethernet data.
9. according to claim 6 or 7 described RRU optical fiber switched systems, it is characterized in that described delay data comprises the delay data of up direction and the delay data of down direction.
10. RRU optical fiber switched system according to claim 6 is characterized in that, described optical fiber inspection module comprises:
Default light mouth is synchronous, signal synchronous or the default submodule of the arbitration mechanism of frame synchronization;
Whether the CPRI link that checks optical fiber light, unglazed, frame losing or nonsynchronous detection sub-module occur losing;
If light, unglazed, frame losing or asynchronous appear losing in described optical fiber, and meet that described light mouth is synchronous, signal synchronously or the arbitration mechanism of frame synchronization, then judge the unusual judgement submodule of Link State of described optical fiber.
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| CN106209240A (en) * | 2016-07-08 | 2016-12-07 | 武汉虹信通信技术有限责任公司 | A kind of novel multimode fibre compartment system |
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Application publication date: 20131023 |